chore: release v0.27.17

Typing a cluster macro cost two things per character. The state lived on
SettingsModal, so every keystroke in one of those twenty-four boxes
re-rendered the WHOLE preferences dialog — every list, every form, every
panel. And the save wrote through to Go and into the database on each
one: a round trip per character.

The editor is now its own module-scoped component with its own state, so
a keystroke re-renders twelve rows. And writeUiPrefDebounced holds the
database write until the typing stops, while the local cache — which is
what everything reads back — is still written at once. Pending values are
flushed when the page goes away, so typing and immediately closing does
not lose the last word.

The behaviour is unchanged: still saved as you type, still no Save
button, because a text box whose contents only take effect on some other
button is how work gets lost.

Also folds the satellite changelog into one [NEW] entry. Satellites are
new in this version — nobody reading the notes has seen any of it — so a
running account of how it was built, tab then tracking then rotator then
where the settings moved to, is the wrong shape. One entry saying what it
does.

app.go

@@ -26,6 +26,7 @@ import (
 	"hamlog/internal/antgenius"
 	"hamlog/internal/applog"
 	"hamlog/internal/audio"
+	"hamlog/internal/autocall"
 	"hamlog/internal/award"
 	"hamlog/internal/awardref"
 	"hamlog/internal/backup"
@@ -54,6 +55,7 @@ import (
 	"hamlog/internal/powergenius"
 	"hamlog/internal/profile"
 	"hamlog/internal/pskr"
+	"hamlog/internal/pskrtgt"
 	"hamlog/internal/psu"
 	"hamlog/internal/qslcard"
 	"hamlog/internal/qso"
@@ -65,6 +67,7 @@ import (
 	"hamlog/internal/rotator/pst"
 	"hamlog/internal/rotator/spid"
 	"hamlog/internal/rotgenius"
+	"hamlog/internal/sat"
 	"hamlog/internal/scp"
 	"hamlog/internal/settings"
 	"hamlog/internal/solar"
@@ -100,6 +103,7 @@ const (
 	keyStationCallsign         = "station.callsign"
 	keyStationOperator         = "station.operator"
 	keyWatchlistContestPattern = "watchlist.contest_pattern" // auto-add contest calls containing this
+	keyWatchlistContestCalls   = "watchlist.contest_calls"   // …and these, named one by one
 	keyStationMyGrid           = "station.my_grid"
 	keyStationCountry          = "station.my_country"
 	keyStationSOTA             = "station.my_sota_ref"
@@ -154,6 +158,7 @@ const (
 	// the rule since is that nothing a backend does may be steered by another
 	// backend's setting.
 	keyCATYaesuLowLines    = "cat.yaesu.low_dtr_rts"   // deassert DTR/RTS on connect
+	keyCATYaesuRTTYUSB     = "cat.yaesu.rtty_usb"      // set RTTY on USB rather than the older LSB
 	keyCATKenwoodLowLines  = "cat.kenwood.low_dtr_rts" // deassert DTR/RTS on connect
 	keyCATKenwoodDataMode  = "cat.kenwood.data_mode"   // data modes → "usb" | "data" (MD6) | "keep"
 	keyCATIcomPort         = "cat.icom.port"           // Icom USB CI-V serial port (e.g. COM5)
@@ -195,6 +200,7 @@ const (
 	keyAudioQSOPlayGain = "audio.qso_play_gain" // QSO-recording playback level %
 	keyAudioPTTMethod   = "audio.ptt_method"    // "none" (VOX) | "rts" | "dtr"
 	keyAudioPTTPort     = "audio.ptt_port"      // COM port for serial PTT
+	keyAudioPTTData     = "audio.ptt_data"      // keyer audio arrives on the rig DATA/USB input
 	keyAudioFormat      = "audio.qso_format"    // "wav" | "mp3"
 	keyAudioFromGain    = "audio.from_gain"     // From Radio (RX) mix level, percent
 	keyAudioMicGain     = "audio.mic_gain"      // mic mix level, percent
@@ -507,6 +513,10 @@ type CATSettings struct {
 	// interfaces that read either line as PTT. Off by default: lowering them
 	// stops some USB-serial interfaces transmitting at all.
 	YaesuLowLines bool `json:"yaesu_low_lines"`
+	// YaesuRTTYUSB: ADIF says "RTTY" and Yaesu has both sidebands, so the rig
+	// cannot be driven from the logged mode alone. Off = RTTY-L, the older
+	// convention.
+	YaesuRTTYUSB    bool   `json:"yaesu_rtty_usb"`
 	KenwoodLowLines bool   `json:"kenwood_low_lines"`
 	IcomPort        string `json:"icom_port"`      // Icom USB CI-V serial port (e.g. COM5)
 	IcomBaud        int    `json:"icom_baud"`      // Icom CI-V baud (default 115200)
@@ -749,10 +759,51 @@ type App struct {
 	// is consulted once per message.
 	chaseBandsMu sync.RWMutex
 	chaseBands   map[string]bool
+	// The Chase new panel's OWN band filter, as the set switched off. Read per
+	// message like the list above, so an atomic rather than a settings lookup.
+	chaseNewBandsOff atomic.Value // map[string]bool
 	// pskr is the PSK Reporter MQTT feed, up only while the opening watch is on.
 	// It is the source that makes VHF detection work at all: the cluster and RBN
 	// carry a handful of 6 m spots where PSK Reporter carries hundreds.
 	pskr *pskr.Watcher
+	// pskTgt is the SECOND PSK Reporter connection: the per-station analysis behind
+	// the FT decodes panel. Separate from a.pskr because the two want opposite
+	// slices of the same feed — everything heard near here, against everything
+	// about one callsign anywhere. Built on first use, nil while the panel is
+	// closed.
+	pskTgtMu sync.Mutex
+	pskTgt   *pskrtgt.Watcher
+	// Auto-call: the engine, the period being collected, and the last transmit
+	// state the decoder reported. One mutex — every field here is touched by the
+	// UDP event loop and by the two-second sweeper, and never for long.
+	acMu sync.Mutex
+	ac   *autocall.Engine
+	// Keyed by RECEIVER. Two decoders have two independent slot clocks — an
+	// FT8 window and an FT4 one do not even share a period length — and one
+	// buffer for both cut every slot into fragments, each judged as a period of
+	// its own. The engine then counted a missed period several times a slot.
+	acPeriod map[string]string
+	acAt     map[string]time.Time
+	// acFed is when the last decode of the open period ARRIVED, wall clock. The
+	// period's own timestamp cannot answer "has it gone quiet" — it is the start
+	// of the slot, thirteen seconds before its decodes exist.
+	acFed       map[string]time.Time
+	acTR        map[string]int
+	acBuf       map[string][]acDecode
+	acTX        autocall.TXState
+	acReason    string
+	acLastJudge time.Time
+	// acTXPeriod is the last transmit period already counted — see autoCallNoteTX.
+	acTXPeriod string
+	// acJudged is the last period key each receiver has been judged on, and
+	// acDirty says decodes have arrived for it since. Together they let a period
+	// be judged AGAIN when a straggler turns up, with the whole period in hand.
+	acJudged map[string]string
+	acDirty  map[string]bool
+	// What the decodes panel is SHOWING, and whether it is publishing at all.
+	// The panel owns the filters; this is its answer, not a second copy of them.
+	acVisible   map[string]bool
+	acVisibleOn bool
 	// Self-spot throttle: when and on what frequency we last announced ourselves.
 	// Held in memory only — a restart legitimately re-announces the station.
 	selfSpotMu   sync.Mutex
@@ -768,9 +819,17 @@ type App struct {
 
 	// WSJT-X decode highlighting (message 13) — see app_wsjt_highlight.go.
 	wsjtHighlightOn atomic.Bool
+	// Greying out what is already worked is a sub-option of the same feature —
+	// read on the decode path, so an atomic rather than a settings lookup per
+	// decode.
+	wsjtHLWorkedOn atomic.Bool
 	wsjtHLMu       sync.Mutex
 	wsjtHLSent     map[string]string
 	watchPattern   atomic.Value // auto-contest pattern (string), loaded at startup
+	// The named contest callsigns, as a set, loaded with the pattern and read on
+	// the same hot path — one spot per station on the band, so no settings
+	// lookup and no split per spot.
+	watchCalls atomic.Value // map[string]struct{}
 	operating  *operating.Repo
 	udp        *udp.Manager
 	udpRepo    *udp.Repo
@@ -826,6 +885,23 @@ type App struct {
 
 	alertStore *alerts.Store // DX-cluster spot alert rules (global JSON)
 
+	// udpFocus arbitrates the entry field between several decoders running at
+	// once — see app_udp_focus.go.
+	udpFocus udpFocus
+
+	// Satellites. The elements (where the birds are) and the frequency plan
+	// (what to do with the radio) are held apart because they come from
+	// different places and change for different reasons — a feed every few
+	// days, an operator's correction when a transponder is switched.
+	satMu    sync.Mutex
+	satStore *sat.Store   // orbital elements, by satellite name
+	satBirds *sat.Birds   // uplink/downlink plan
+	satFetch *sat.Fetcher // element feeds + the on-disk cache
+	// satTrack is the live tracker: the goroutine that walks the radio through a
+	// pass. nil when nothing is being tracked.
+	satTrackMu sync.Mutex
+	satTrack   *satTracker
+
 	cwMu      sync.Mutex        // guards the CW decoder lifecycle
 	cwStop    chan struct{}     // stops the CW decoder capture loop; nil when off
 	cwDecoder *cwdecode.Decoder // live decoder (for retargeting the pitch)
@@ -929,6 +1005,7 @@ type App struct {
 	opLon  float64
 	opSet  bool
 	opCall string // active profile callsign, cached for outbound UDP emitters
+	opGrid string // active profile locator, cached the same way and for the same reason
 
 	// Dedup for the frequency/mode outbound UDP emitters (PstRotator, N1MM): only
 	// send when the frequency or mode actually changes.
@@ -978,6 +1055,7 @@ func (a *App) refreshOperatorGrid() {
 		return
 	}
 	a.opCall = strings.ToUpper(strings.TrimSpace(p.Callsign))
+	a.opGrid = strings.ToUpper(strings.TrimSpace(p.MyGrid))
 	lat, lon, ok := gridToLatLon(p.MyGrid)
 	if !ok {
 		return
@@ -1133,6 +1211,7 @@ func (a *App) startup(ctx context.Context) {
 	audio.AlertSink = func(format string, args ...any) { a.toast(fmt.Sprintf(format, args...)) }
 	extsvc.LogSink = applog.Printf // log raw QRZ (and other) service responses for diagnosis
 	lookup.LogSink = applog.Printf // which call was queried, and why a portable lookup fell back
+	audio.Logf = applog.Printf     // why the Listening device stayed silent, above all
 	db.LogSink = applog.Printf     // which schema migrations ran, and how long they took
 	// Version and executable FIRST, before anything else can fail. Diagnosing a
 	// report means knowing which build produced the log, and that was previously
@@ -1486,7 +1565,9 @@ func (a *App) startup(ctx context.Context) {
 	a.pota = pota.New(func(format string, args ...any) { applog.Printf(format, args...) })
 	a.startWatchlistClubLog()
 	a.watchPattern.Store(strings.ToUpper(strings.TrimSpace(a.settingOr(keyWatchlistContestPattern, ""))))
+	a.watchCalls.Store(parseContestCalls(a.settingOr(keyWatchlistContestCalls, "")))
 	a.wsjtHighlightOn.Store(a.settingOr(keyWsjtHighlight, "0") == "1")
+	a.wsjtHLWorkedOn.Store(a.settingOr(keyWsjtHLWorked, "0") == "1")
 	go a.pota.Run(a.ctx)
 
 	// DX Cluster (multi-server): the spot callback enriches each spot
@@ -1580,6 +1661,10 @@ func (a *App) startup(ctx context.Context) {
 		a.alertStore = as
 	}
 
+	// Satellites: the cached elements and the frequency plan. Local files only —
+	// any element fetch it decides to make goes to the network on its own.
+	a.startSatellites()
+
 	// Ultrabeam antenna: connect in the background if enabled.
 	a.startUltrabeam()
 	// Antenna Genius switch: connect in the background if enabled.
@@ -1612,9 +1697,13 @@ func (a *App) startup(ctx context.Context) {
 	a.startGridCache()
 	a.chaseNew = newChaseNewStore()
 	a.refreshChaseNew()
+	a.refreshChaseNewBands()
 	// PSK Reporter. After the operator's grid is known: without it there is no
 	// distance to measure and no receiver squares to filter on, so it stays down.
 	a.startBandOpenFeed()
+	// Auto-call. After the watch list and the logbook: the ladder is meaningless
+	// without either, and it must never call anybody on a log it cannot read.
+	a.startAutoCall()
 	// One-time tidy-up of a field nothing used to record. Background, once.
 	a.backfillDistancesOnce()
 
@@ -1878,6 +1967,11 @@ func (a *App) shutdown(ctx context.Context) {
 	// logger has spent seconds tearing down ports.
 	applog.Printf("shutdown: closing autostart programs")
 	a.CloseAutostartPrograms()
+	a.stopPSKTarget() // one TLS socket to a public broker; nothing to flush
+	// Before CAT goes down: disarming satellite mode takes the radio out of full
+	// duplex and puts the transmitter back where the operator is listening, and
+	// that has to happen while the link is still up.
+	a.StopSatelliteTracking()
 	applog.Printf("shutdown: stopping UDP")
 	if a.udp != nil {
 		a.udp.StopAll()
@@ -2546,7 +2640,20 @@ func (a *App) switchLogbook(p profile.Profile) error {
 		_ = old.Close()
 	}
 	applog.Printf("logbook switched to %s for profile %q", backend, p.Name)
+	// EVERY worked/new verdict belonged to the OLD logbook.
+	//
+	// The award matrices above are only half of it: the in-memory worked-index
+	// the alert engine reads, the chase-new list, and the frontend's own cache of
+	// resolved spot verdicts all still hold the previous log's answers. An
+	// operator switching to an empty profile and back found every decode on the
+	// screen badged NEW — the empty log's verdicts, cached under the full one,
+	// and nothing short of a restart cleared them.
+	if a.chaseNew != nil {
+		a.chaseNew.clear()
+	}
+	go a.rebuildWorkedIndex()
 	if a.ctx != nil {
+		wruntime.EventsEmit(a.ctx, "spotstatus:invalidate")
 		wruntime.EventsEmit(a.ctx, "logbook:changed")
 	}
 	return nil
@@ -2991,6 +3098,10 @@ func (a *App) AddQSO(q qso.QSO) (id int64, err error) {
 		}
 	}()
 	a.applyStationDefaults(&q, true)
+	// Before fillRXDefaults, which copies the transmit frequency into the receive
+	// one: on a satellite the two are on different bands, and letting that copy
+	// happen first would bury the downlink under the uplink.
+	a.applySatellite(&q)
 	fillRXDefaults(&q)
 	fillDistance(&q)
 	a.applyDXCCNumber(&q)
@@ -3025,6 +3136,9 @@ func (a *App) AddQSO(q qso.QSO) (id int64, err error) {
 	}
 	if err == nil {
 		q.ID = id
+		// The contact is over, so no decoder holds the entry field any more: the
+		// next station may come from whichever one hears it first.
+		a.udpFocus.release("QSO logged")
 		a.noteWorked(q.Callsign, q.Band, q.Mode) // keep the alert worked-index fresh (in-memory)
 		a.noteLiveQSO()                          // multi-op: flip this operator back "online" (publishes async)
 		// Snapshot the QSO recording SYNCHRONOUSLY, BEFORE announcing the log: the
@@ -3079,7 +3193,7 @@ func (a *App) AddQSO(q qso.QSO) (id int64, err error) {
 			// a few lines above and is not on the copy taken at insert time.
 			a.syncPublishAsync(syncfolder.OpAdd, id, nil)
 			if a.udp != nil {
-				rec := adif.SingleRecordADIF(qc)
+				rec := adif.ForwardRecordADIF(qc)
 				a.udp.EmitLoggedADIF(rec)
 				a.udp.EmitLoggedQSOWSJT(wsjtLoggedQSO(qc), rec)
 				a.udpTriggerQSOLogged(qc)
@@ -8241,7 +8355,7 @@ func (a *App) GetCATSettings() (CATSettings, error) {
 	if a.settings == nil {
 		return CATSettings{Backend: "omnirig", OmniRigNum: 1, PollMs: 250}, fmt.Errorf("db not initialized")
 	}
-	m, err := a.settings.GetMany(a.ctx, keyCATEnabled, keyCATBackend, keyCATOmniRigNum, keyCATOmniRigVFO, keyCATFlexHost, keyCATFlexPort, keyCATFlexSpots, keyCATFlexDVKDax, keyCATFlexDecodeSpots, keyCATFlexDecodeSecs, keyCATXieguPort, keyCATXieguBaud, keyCATXieguAddr, keyCATXieguPTTLine, keyCATYaesuPort, keyCATYaesuBaud, keyCATKenwoodPort, keyCATKenwoodBaud, keyCATKenwoodHost, keyCATKenwoodLink, keyCATYaesuLowLines, keyCATKenwoodLowLines, keyCATKenwoodDataMode, keyCATIcomPort, keyCATIcomBaud, keyCATIcomAddr, keyCATIcomNetHost, keyCATIcomNetUser, keyCATIcomNetPass, keyCATIcomNetAudio, keyCATTCIHost, keyCATTCIPort, keyCATTCISpots, keyCATPttHotkeyEnabled, keyCATPttHotkey, keyCATPttHotkeyToggle, keyCATPollMs, keyCATDelayMs, keyCATOffsetOn, keyCATOffsetHz, keyCATDigitalDefault, keyCATShareEnabled, keyCATSharePort, keyCATShareProto, keyCATShareTCIPort, keyCATDigiUSB)
+	m, err := a.settings.GetMany(a.ctx, keyCATEnabled, keyCATBackend, keyCATOmniRigNum, keyCATOmniRigVFO, keyCATFlexHost, keyCATFlexPort, keyCATFlexSpots, keyCATFlexDVKDax, keyCATFlexDecodeSpots, keyCATFlexDecodeSecs, keyCATXieguPort, keyCATXieguBaud, keyCATXieguAddr, keyCATXieguPTTLine, keyCATYaesuPort, keyCATYaesuBaud, keyCATYaesuRTTYUSB, keyCATKenwoodPort, keyCATKenwoodBaud, keyCATKenwoodHost, keyCATKenwoodLink, keyCATYaesuLowLines, keyCATKenwoodLowLines, keyCATKenwoodDataMode, keyCATIcomPort, keyCATIcomBaud, keyCATIcomAddr, keyCATIcomNetHost, keyCATIcomNetUser, keyCATIcomNetPass, keyCATIcomNetAudio, keyCATTCIHost, keyCATTCIPort, keyCATTCISpots, keyCATPttHotkeyEnabled, keyCATPttHotkey, keyCATPttHotkeyToggle, keyCATPollMs, keyCATDelayMs, keyCATOffsetOn, keyCATOffsetHz, keyCATDigitalDefault, keyCATShareEnabled, keyCATSharePort, keyCATShareProto, keyCATShareTCIPort, keyCATDigiUSB)
 	if err != nil {
 		return CATSettings{}, err
 	}
@@ -8267,6 +8381,7 @@ func (a *App) GetCATSettings() (CATSettings, error) {
 		KenwoodLink:      kenwoodLinkOr(m[keyCATKenwoodLink], m[keyCATKenwoodHost]),
 		KenwoodBaud:      9600,
 		YaesuLowLines:    m[keyCATYaesuLowLines] == "1",
+		YaesuRTTYUSB:     m[keyCATYaesuRTTYUSB] == "1",
 		KenwoodLowLines:  m[keyCATKenwoodLowLines] == "1",
 		KenwoodDataMode:  m[keyCATKenwoodDataMode],
 		IcomPort:         m[keyCATIcomPort],
@@ -8400,7 +8515,11 @@ func (a *App) SaveCATSettings(s CATSettings) error {
 	if s.IcomBaud <= 0 {
 		s.IcomBaud = 115200
 	}
-	if s.IcomAddr <= 0 || s.IcomAddr > 0xFF {
+	// 0x00 IS an address. Rejecting it as "unset" is what sent an operator's
+	// custom-address rig straight back to the IC-7610's 0x98 every time the
+	// settings were saved — the model dropdown snapping back with it, since it
+	// reads the address rather than a stored model.
+	if s.IcomAddr < 0 || s.IcomAddr > 0xFF {
 		s.IcomAddr = 0x98
 	}
 	if s.PollMs < 50 || s.PollMs > 2000 {
@@ -8476,6 +8595,7 @@ func (a *App) SaveCATSettings(s CATSettings) error {
 		keyCATKenwoodLink:      kenwoodLinkOr(s.KenwoodLink, s.KenwoodHost),
 		keyCATKenwoodBaud:      strconv.Itoa(s.KenwoodBaud),
 		keyCATYaesuLowLines:    b01(s.YaesuLowLines),
+		keyCATYaesuRTTYUSB:     b01(s.YaesuRTTYUSB),
 		keyCATKenwoodLowLines:  b01(s.KenwoodLowLines),
 		keyCATKenwoodDataMode:  strings.ToLower(strings.TrimSpace(s.KenwoodDataMode)),
 		keyCATIcomPort:         strings.TrimSpace(s.IcomPort),
@@ -8529,6 +8649,10 @@ type AudioSettings struct {
 	PrerollSeconds  int    `json:"preroll_seconds"`  // rolling pre-roll (default 8)
 	PTTMethod       string `json:"ptt_method"`       // "none" (VOX) | "rts" | "dtr"
 	PTTPort         string `json:"ptt_port"`         // COM port for serial PTT
+	// PTTData: the keyer's audio reaches the radio on its DATA/USB input, not
+	// the microphone socket. CAT keying only — it changes which transmit
+	// command is sent (a Kenwood TS-590 takes TX1 instead of TX).
+	PTTData     bool   `json:"ptt_data"`
 	Format      string `json:"format"`        // "wav" | "mp3"
 	FromGain    int    `json:"from_gain"`     // From Radio (RX) mix level %, default 100
 	MicGain     int    `json:"mic_gain"`      // mic mix level %, default 100
@@ -8590,7 +8714,7 @@ func (a *App) GetAudioSettings() (AudioSettings, error) {
 	}
 	m, err := a.settings.GetMany(a.ctx,
 		keyAudioFromRadio, keyAudioToRadio, keyAudioRecDevice, keyAudioListenDevice,
-		keyAudioQSORecord, keyAudioQSODir, keyAudioPreroll, keyAudioPTTMethod, keyAudioPTTPort, keyAudioFormat,
+		keyAudioQSORecord, keyAudioQSODir, keyAudioPreroll, keyAudioPTTMethod, keyAudioPTTPort, keyAudioPTTData, keyAudioFormat,
 		keyAudioFromGain, keyAudioMicGain, keyAudioTXGain, keyAudioQSOPlayGain)
 	if err != nil {
 		return out, err
@@ -8602,6 +8726,7 @@ func (a *App) GetAudioSettings() (AudioSettings, error) {
 		out.PTTMethod = v
 	}
 	out.PTTPort = m[keyAudioPTTPort]
+	out.PTTData = m[keyAudioPTTData] == "1"
 	out.FromRadio = m[keyAudioFromRadio]
 	out.ToRadio = m[keyAudioToRadio]
 	out.RecordingDevice = m[keyAudioRecDevice]
@@ -8672,6 +8797,7 @@ func (a *App) SaveAudioSettings(s AudioSettings) error {
 		keyAudioPreroll:      strconv.Itoa(s.PrerollSeconds),
 		keyAudioPTTMethod:    pttMethod,
 		keyAudioPTTPort:      strings.TrimSpace(s.PTTPort),
+		keyAudioPTTData:      boolStr(s.PTTData),
 		keyAudioFormat:       format,
 		keyAudioFromGain:     strconv.Itoa(s.FromGain),
 		keyAudioMicGain:      strconv.Itoa(s.MicGain),
@@ -10242,14 +10368,26 @@ func (a *App) applyClublogException(q *qso.QSO, force bool) bool {
 	}
 	e, ok := a.clublog.Resolve(q.Callsign, date)
 	if !ok {
-		// No exception COVERS this QSO's date. If the call nonetheless HAS a
-		// date-ranged exception (e.g. G1T = Scotland only from 2024-02-21), then
-		// cty.dat's date-blind "=G1T → Scotland" override is WRONG for an older
-		// QSO — resolve it by ClubLog's date-aware PREFIX table instead (G1 →
-		// England for a 2012 contact). Ordinary calls (no exception) are left to
-		// cty.dat.
-		if a.clublog.HasException(q.Callsign) {
+		// No exception covers this QSO's date, so the question becomes which
+		// country file knows the PREFIX better.
+		//
+		// ClubLog's prefix table is date-ranged and cty.dat's is not, and that
+		// is not a detail: cty.dat describes the world as it is TODAY. Niue
+		// moved to E6, so ZK2 went back to New Zealand there — and every ZK2
+		// contact ever made was silently relabelled New Zealand, taking a
+		// confirmed entity out of an operator's DXCC with it. ZK1 loses the
+		// Cook Islands the same way. ClubLog still knows both.
+		//
+		// It only speaks when it HAS an answer (E6, TO5A and their like are not
+		// in its prefix table at all), and never over an exact "=CALLSIGN" entry
+		// in cty.dat: that is somebody having looked at this very callsign, and
+		// a prefix rule does not overrule it.
 		if pe, pok := a.clublog.ResolvePrefix(q.Callsign, date); pok {
+			ctyExact := false
+			if m, mok := a.dxcc.Lookup(q.Callsign); mok {
+				ctyExact = m.Exact
+			}
+			if !ctyExact {
 				e, ok = pe, true
 			}
 		}
@@ -10599,7 +10737,7 @@ func (a *App) pttKey(cfg AudioSettings) error {
 		if a.cat == nil {
 			return fmt.Errorf("CAT not initialized")
 		}
-		if err := a.cat.SetPTT(true); err != nil {
+		if err := a.cat.SetPTTSource(true, cfg.PTTData); err != nil {
 			applog.Printf("ptt: CAT SetPTT failed: %v", err)
 			return err
 		}
@@ -11712,14 +11850,45 @@ func (a *App) UploadQSOsManual(service string, ids []int64) error {
 		return fmt.Errorf("db not initialized")
 	}
 	svc := extsvc.Service(service)
-	if uploadColumnFor(service) == "" && svc != extsvc.ServiceHamlog && svc != extsvc.ServiceHamQTH {
+	// Cloudlog/Wavelog has no sent-status column ON PURPOSE — it dedupes
+	// server-side, which is exactly why an explicit selection needs no column to
+	// be safe. HAMLOG.online and HamQTH keep theirs in ADIF extras.
+	if svc == extsvc.ServiceHamlog {
+		return extsvc.ErrHamlogClosed
+	}
+	if uploadColumnFor(service) == "" &&
+		svc != extsvc.ServiceHamQTH && svc != extsvc.ServiceCloudlog {
 		return fmt.Errorf("unknown service %q", service)
 	}
 	cfg := a.loadExternalServices()
+	// NOT CONFIGURED IS AN ANSWER, AND IT BELONGS HERE.
+	//
+	// The upload runs on its own goroutine and reports through the QSL Manager's
+	// console, which is not open when the command was given from a right-click in
+	// the QSO list: an upload to a service with no credentials looked exactly
+	// like one that worked. Refused synchronously instead, where the caller can
+	// show it.
+	if err := uploadConfigured(svc, cfg); err != nil {
+		return err
+	}
 	go a.runManualUpload(svc, ids, cfg)
 	return nil
 }
 
+// uploadConfigured reports whether a service can be uploaded to at all.
+//
+// The rules live in internal/extsvc, beside the uploaders that enforce them.
+// Written here instead they drifted at once: Club Log was refused for a missing
+// API key that nobody has ever set — OpsLog carries its own application key —
+// and an operator whose live upload had worked for months was told his service
+// was not configured.
+func uploadConfigured(svc extsvc.Service, cfg extsvc.ExternalServices) error {
+	if err := extsvc.Configured(svc, cfg); err != nil {
+		return fmt.Errorf("%w (Settings → External services)", err)
+	}
+	return nil
+}
+
 func (a *App) runManualUpload(svc extsvc.Service, ids []int64, cfg extsvc.ExternalServices) {
 	emit := func(line string) {
 		if a.ctx != nil {
@@ -11936,7 +12105,7 @@ func (a *App) runManualUpload(svc extsvc.Service, ids []int64, cfg extsvc.Extern
 			}
 			flush()
 		}
-	} else if svc == extsvc.ServiceHamlog || svc == extsvc.ServiceHamQTH {
+	} else if svc == extsvc.ServiceHamlog || svc == extsvc.ServiceHamQTH || svc == extsvc.ServiceCloudlog {
 		// One record per request, extras-stamped services. Hamlog used to fall
 		// through to the QRZ branch below and got uploaded to the WRONG service
 		// with the QRZ key — the context menu offered what the loop never handled.
@@ -11956,10 +12125,13 @@ func (a *App) runManualUpload(svc extsvc.Service, ids []int64, cfg extsvc.Extern
 			}
 			var res extsvc.UploadResult
 			var err error
-			if svc == extsvc.ServiceHamlog {
+			switch svc {
+			case extsvc.ServiceHamlog:
 				res, err = extsvc.UploadHamlog(ctx, nil, cfg.Hamlog, rec)
-			} else {
+			case extsvc.ServiceHamQTH:
 				res, err = extsvc.UploadHamQTH(ctx, nil, cfg.HamQTH, rec)
+			default:
+				res, err = extsvc.UploadCloudlog(ctx, nil, cfg.Cloudlog, rec)
 			}
 			if err == nil && res.OK {
 				a.markExtUploaded(svc, id, res.LogID)
@@ -12015,6 +12187,7 @@ func (a *App) runManualUpload(svc extsvc.Service, ids []int64, cfg extsvc.Extern
 			extsvc.ServiceQRZ: "QRZ.com", extsvc.ServiceClublog: "Club Log", extsvc.ServiceHRDLog: "HRDLog",
 			extsvc.ServiceLoTW: "LoTW", extsvc.ServiceEQSL: "eQSL",
 			extsvc.ServiceHamlog: "HAMLOG.online", extsvc.ServiceHamQTH: "HamQTH",
+			extsvc.ServiceCloudlog: "Cloudlog / Wavelog",
 		}[svc]
 		if label == "" {
 			label = string(svc)
@@ -14215,7 +14388,7 @@ func (a *App) LogUDPLoggedADIF(adifText string) (int64, error) {
 		// path — otherwise a QSO logged FROM WSJT-X/JTDX/MSHV was never re-emitted
 		// to the outbound ADIF listeners (Log4OM, N1MM, gridtracker…).
 		if a.udp != nil {
-			rec := adif.SingleRecordADIF(qc)
+			rec := adif.ForwardRecordADIF(qc)
 			a.udp.EmitLoggedADIF(rec)
 			a.udp.EmitLoggedQSOWSJT(wsjtLoggedQSO(qc), rec)
 			a.udpTriggerQSOLogged(qc)
@@ -14298,6 +14471,17 @@ func (a *App) consumeUDPEvents() {
 						map[bool]string{true: "", false: " — nothing we send can start a transmission while this is false"}[now.enabled])
 				}
 			}
+			// Auto-call counts what actually goes on the air from here: a reply
+			// we sent is a request, and this is the answer to whether the
+			// decoder acted on it.
+			acTX := autocall.TXState{
+				Transmitting: ev.Transmitting, Enabled: ev.TxEnabled,
+				DXCall: ev.DXCall, Msg: ev.TxMessage, Instance: ev.ProgramID,
+			}
+			a.autoCallSetTX(acTX)
+			if ev.Transmitting {
+				a.autoCallNoteTX(acTX)
+			}
 			wruntime.EventsEmit(a.ctx, "udp:tx_state", map[string]any{
 				"msg":          ev.TxMessage,
 				"transmitting": ev.Transmitting,
@@ -14355,10 +14539,20 @@ func (a *App) consumeUDPEvents() {
 				// false on a Replay's resent history — shown, never auto-answered.
 				"is_new": ev.DecodeIsNew,
 			})
+			// Auto-call sees the decode after the panel, never before: the list
+			// the operator reads must not wait on a decision about calling.
+			a.autoCallFeed(autocall.Decode{
+				Call: ev.DecodeCall, Band: bandForHz(ev.DecodeFreqHz), Mode: ev.Mode,
+				Msg: ev.DecodeMsg, SNR: ev.DecodeSNR, At: at, TRPeriod: ev.DecodeTRPeriod,
+				Instance: ev.ProgramID, CQ: ev.DecodeCQ,
+				Ms: ev.DecodeMs, DT: ev.DecodeDT, AudioHz: int64(ev.DecodeAudioHz),
+				ModeRaw: ev.DecodeModeRaw, MsgRaw: ev.DecodeMsgRaw, LowConf: ev.DecodeLowConf,
+				IsNew: ev.DecodeIsNew,
+			})
 			// Log-aware colour in the decoder's own window (see
 			// app_wsjt_highlight.go). After the emit: painting must never delay
 			// the panel.
-			a.maybeHighlightDecode(ev.ProgramID, ev.DecodeCall, bandForHz(ev.DecodeFreqHz))
+			a.maybeHighlightDecode(ev.ProgramID, ev.DecodeCall, bandForHz(ev.DecodeFreqHz), ev.Mode)
 			// A WSJT-X decode (heard station). Render it on the FlexRadio
 			// panadapter when the option is on; green + SNR comment, auto-expiring
 			// after the configured duration. De-duped per call in the Flex backend.
@@ -14429,6 +14623,13 @@ func (a *App) consumeUDPEvents() {
 				"adif":      ev.LoggedADIF,
 			})
 		case ev.ClearCall:
+			// Only from the program the entry field belongs to. An idle decoder
+			// alongside the one being worked clears its own DX Call for reasons
+			// of its own, and that must not empty a field somebody else filled.
+			if !a.udpFocus.holds(ev.ProgramID) {
+				break
+			}
+			a.udpFocus.release("DX Call cleared")
 			applog.Printf("udp: emit udp:clear_call (DX Call cleared in the digital app)\n")
 			wruntime.EventsEmit(a.ctx, "udp:clear_call", map[string]any{
 				"service": string(ev.Service),
@@ -14453,6 +14654,12 @@ func (a *App) consumeUDPEvents() {
 				wruntime.EventsEmit(a.ctx, "udp:remote_call", ev.DXCall)
 			}
 		case ev.DXCall != "":
+			// With two or three decoders running, the one announcing a station
+			// takes the entry field and keeps it until it lets go. See udpFocus.
+			if !a.udpFocus.claim(ev.ProgramID) {
+				a.udpFocus.noteIgnored(ev.ProgramID, ev.DXCall)
+				break
+			}
 			applog.Printf("udp: emit udp:dx_call %q (mode=%s freq=%d)\n", ev.DXCall, ev.Mode, ev.FreqHz)
 			wruntime.EventsEmit(a.ctx, "udp:dx_call", map[string]any{
 				"call":    ev.DXCall,
@@ -15137,6 +15344,53 @@ func (a *App) IcomSetPower(on bool) error {
 	return a.cat.IcomDo(func(ic cat.IcomController) error { return ic.SetPower(on) })
 }
 
+// icomBandCodes maps a band label to the code the band stacking registers use
+// (CI-V 0x1A 0x01). Deliberately partial.
+//
+// The HF codes 01-09 are the same on every Icom that has HF, and are safe. What
+// is NOT the same is everything above them: 50 MHz is 10 on an HF+6 rig, while
+// an IC-9700 has no HF at all and numbers its three bands 144/430/1200 as 1/2/3.
+// A band missing here is not a failure — the caller falls back to sending a
+// frequency, which is what the button did before — so an unlisted band or an
+// unlisted model loses nothing, and a GUESSED code would land the operator on
+// another band entirely.
+func icomBandCodes(model string) map[string]int {
+	m := strings.ToUpper(model)
+	if strings.Contains(m, "9700") {
+		return map[string]int{"2": 1, "70cm": 2, "23cm": 3}
+	}
+	// HF + 6 m: the 7300 / 7610 / 7760 / 7100 / 7851 / 705 / 9100 class. 60 m and
+	// 4 m are absent on purpose — they are not a band key on these radios.
+	return map[string]int{
+		"160": 1, "80": 2, "40": 3, "30": 4, "20": 5,
+		"17": 6, "15": 7, "12": 8, "10": 9, "6": 0x10,
+	}
+}
+
+// IcomRecallBand puts the radio where its own band stacking register says the
+// operator last was on that band — the front panel's band key, from here.
+//
+// reg is 1, 2 or 3, so pressing the same band button again walks through the
+// registers exactly as the radio's key does. Returns the frequency landed on;
+// an error means nothing was changed and the caller should send its own
+// frequency instead.
+func (a *App) IcomRecallBand(band string, reg int) (int64, error) {
+	if a.cat == nil {
+		return 0, fmt.Errorf("cat not initialized")
+	}
+	code, ok := icomBandCodes(a.cat.State().Rig)[strings.ToLower(strings.TrimSpace(band))]
+	if !ok {
+		return 0, fmt.Errorf("no band stacking register for %s on this radio", band)
+	}
+	var hz int64
+	err := a.cat.IcomDo(func(ic cat.IcomController) error {
+		var e error
+		hz, e = ic.RecallBandStack(code, reg)
+		return e
+	})
+	return hz, err
+}
+
 // IcomSetScope enables/disables the spectrum-scope waveform stream.
 func (a *App) IcomSetScope(on bool) error {
 	if a.cat == nil {
@@ -16022,6 +16276,14 @@ func (a *App) reloadCAT() {
 		go a.startQSORecorderIfEnabled()
 	}
 	a.reloadCATShare(s)
+	// Preferences that the LINK does not depend on, pushed to the rig that is
+	// already connected. They are deliberately absent from catLinkSig — none of
+	// them is worth dropping the CAT link (and with it WSJT-X's rigctl session)
+	// to apply — so without this they waited for the next launch, and the
+	// operator ticking "RTTY on USB" watched the rig go on choosing LSB.
+	if s.Enabled && s.Backend == "yaesu" && a.cat != nil {
+		_ = a.cat.YaesuDo(func(y cat.YaesuController) error { y.SetRTTYUpper(s.YaesuRTTYUSB); return nil })
+	}
 	// Nothing about the link changed → leave it connected. See catLinkSig.
 	if sig := catLinkSig(s); sig == a.catSig {
 		applog.Printf("cat: settings saved, link unchanged — staying connected")
@@ -16082,6 +16344,7 @@ func (a *App) reloadCAT() {
 		// (a rig file that hides the VFO, a Freq property meaning A on one model
 		// and B on another); talking to the radio directly removes it.
 		yz := cat.NewYaesu(s.YaesuPort, s.YaesuBaud, s.DigitalDefault)
+		yz.SetRTTYUpper(s.YaesuRTTYUSB)
 		yz.SetLowerLines(s.YaesuLowLines)
 		a.cat.Start(yz)
 	case "kenwood", "elecraft":
@@ -16547,6 +16810,20 @@ func (a *App) reloadAfterProfileSwitch() {
 	// per-profile settings too — rebuilt so a switch doesn't keep showing the
 	// previous profile's view of who is worth chasing.
 	a.startWatchlistClubLog()
+	// Auto-call is per profile — attempts, the "call only" callsign, whether it
+	// is on at all — and it TRANSMITS. A switch that left the previous profile's
+	// settings running would have the wrong station calling on the wrong log.
+	//
+	// Off, exactly as at launch: a switch changes the callsign, the log and
+	// usually the antenna, and none of that is a state in which a transmitter
+	// should resume by itself because this profile's stored setting said on.
+	// Re-applied rather than restarted: the loop is one goroutine for the life
+	// of the process.
+	a.disarmAutoCall("profile switch")
+	a.autoCallEngine().Reset()
+	// Same reasoning for the satellite tracker: it transmits, and the new profile
+	// may be a different station on a different antenna.
+	a.StopSatelliteTracking()
 }
 
 // DuplicateProfile clones an existing profile under newName. Useful when
@@ -18101,7 +18378,22 @@ func motorBandAllowed(bands []string, hz int64) bool {
 // refreshed every couple of seconds — so a fresh command opens a short grace
 // window during which TX stays inhibited even before the poll confirms motion,
 // closing the gap at the start of a move.
-func (a *App) noteMotorMoveCommanded() { a.motorMoveCmdNs.Store(time.Now().UnixNano()) }
+// noteMotorMoveCommanded records — and ANNOUNCES — that the antenna has just
+// been told to move.
+//
+// The transmit gag already started here; the screen did not. It waited for a
+// status poll to come round and say the elements were travelling, so the
+// indicator turned orange a second or more after the button was pressed, and on
+// an automatic follow (band change with tracking on) the operator had no warning
+// at all until the poll landed. The event lets the interface show it at the
+// instant the order goes out, which is also when the transmitter is gagged —
+// one moment, one appearance.
+func (a *App) noteMotorMoveCommanded() {
+	a.motorMoveCmdNs.Store(time.Now().UnixNano())
+	if a.ctx != nil {
+		wruntime.EventsEmit(a.ctx, "motorant:move")
+	}
+}
 
 // applyMotorInhibit sets or clears the Flex transmit inhibit, but only when the
 // active CAT backend IS a FlexRadio — the inhibit is a Flex-API feature; with any
@@ -18130,7 +18422,13 @@ func (a *App) applyMotorInhibit(on bool) {
 // OR within a grace window after a commanded move — and always releases the
 // inhibit when it stops (so a settings change / shutdown never leaves TX blocked).
 func (a *App) motorTXInhibitLoop(c motorAntenna, bands []string, stop <-chan struct{}) {
-	const grace = 3 * time.Second // cover the poll latency at the very start of a move
+	// Just long enough to bridge ONE fast poll at the start of a move, when the
+	// antenna has been told to go but has not yet said it is going. It was three
+	// seconds, from when the status poll ran every two: a move that took a second
+	// left the transmitter gagged for two more, with the elements already in
+	// place. The antenna is now polled four times a second while it travels, so
+	// this only has to cover the command itself.
+	const grace = 900 * time.Millisecond
 	ticker := time.NewTicker(300 * time.Millisecond)
 	defer ticker.Stop()
 	defer a.applyMotorInhibit(false) // never leave TX blocked when the loop ends
@@ -20428,6 +20726,15 @@ func (a *App) SaveChaseSettings(cs ChaseSettings) error {
 	a.clusterStatusMu.Lock()
 	a.clusterStatusIdx = nil
 	a.clusterStatusMu.Unlock()
+	// Chase new judges each decode AS IT ARRIVES and keeps only what was new at
+	// that moment, so its list is a set of verdicts reached under the old rule —
+	// and nothing in it would ever be re-judged. Switching to "new only" left
+	// rows listed that are merely unconfirmed; switching the other way could not
+	// bring back what had already been refused. Emptied, it refills from the
+	// live feed within a period or two, under the rule now in force.
+	if a.chaseNew != nil {
+		a.chaseNew.clear()
+	}
 	// The frontend caches resolved verdicts and only asks about unknown keys —
 	// without this it kept judging half the screen under the OLD rules until a
 	// restart, which read as the new mode simply not working.

app_gate.go

@@ -20,6 +20,7 @@ var deniedCallHashes = map[string]struct{}{
 	"0741c9e394b42f43191899105553b47155ddc3026da12b5360701f9c181ff123": {},
 	"ab4926a3a0ab76d41b5b99cd3ad0683584970c341c29427c1dfa4b3c329ce415": {},
 	"9d17c9c213a6cc89c12d7520bcf21c86a0cf43d17e82e74f33f3a77cb865d28a": {},
+	"94ee059335e587e501cc4bf90613e0814f00a7b08bc7c648fd865a2af6a22cc2": {},
 }
 
 // callDenied reports whether a callsign is on deniedCallHashes. The call is

app_sat.go

@@ -0,0 +1,980 @@
+package main
+
+// Satellites — the wiring around internal/sat.
+//
+// The package knows orbits and frequency plans; this file is what the station
+// knows: where the antenna is, which birds the operator cares about, and where
+// the elements are kept. Nothing here talks to a radio or a rotator yet — that
+// is the next layer, and it is deliberately built on top of GetSatelliteTuning
+// rather than beside it, so what the operator reads on screen and what gets
+// sent to the rig can never disagree.
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+
+	wruntime "github.com/wailsapp/wails/v2/pkg/runtime"
+
+	"hamlog/internal/applog"
+	"hamlog/internal/sat"
+)
+
+const (
+	keySatFavorites = "sat.favorites" // comma-separated satellite names
+	keySatMinEl     = "sat.min_el"    // degrees; passes lower than this are not listed
+	keySatWindowH   = "sat.window_h"  // hours of pass predictions
+	keySatAutoTLE   = "sat.auto_tle"  // fetch elements at startup when the set is stale
+	keySatGrid      = "sat.grid"      // locator override ("" = the station's own)
+	keySatAltM      = "sat.alt_m"     // antenna height above sea level, metres
+
+	// The az/el rotator. Its own settings rather than the HF rotator's: a
+	// satellite station's elevation rotator is a different machine on a
+	// different port, and an operator who has both must not have to choose.
+	keySatRotOn = "sat.rot_enabled"
+	// Which program drives the mast: OpsLog itself over EasyComm, or PstRotator,
+	// which many stations already run in front of their controller. Its own port
+	// key because it is a different program on a different port from an EasyComm
+	// controller, and an operator who tries both must not lose the first setting
+	// to the second.
+	keySatRotType      = "sat.rot_type"      // "easycomm" | "pstrotator"
+	keySatRotPstPort   = "sat.rot_pst_port"  // PstRotator's UDP command port
+	keySatRotTransport = "sat.rot_transport" // "serial" | "tcp"
+	keySatRotHost      = "sat.rot_host"
+	keySatRotPort      = "sat.rot_port"
+	keySatRotCOM       = "sat.rot_com"
+	keySatRotBaud      = "sat.rot_baud"
+	keySatRotMaxAz     = "sat.rot_max_az" // 360 or 450
+	keySatRotMinEl     = "sat.rot_min_el" // don't drive the rotator below this elevation
+	keySatRotStep      = "sat.rot_step"   // degrees of change worth a command
+	keySatRotPark      = "sat.rot_park"   // park at az 0 / el 0 when tracking stops
+)
+
+// customTLEName holds elements the operator pasted in by hand.
+//
+// Kept apart from the feed cache because the cache is REPLACED wholesale on
+// every refresh: a freshly launched satellite, whose elements arrive on a
+// mailing list days before any feed carries it, would be wiped by the first
+// automatic update — which is precisely the week everybody wants to hear it.
+const customTLEName = "satellites.custom.tle"
+
+// SatSettings is the station's side of satellite work.
+type SatSettings struct {
+	Favorites []string `json:"favorites"`
+	MinEl     int      `json:"min_el"`
+	WindowH   int      `json:"window_h"`
+	AutoTLE   bool     `json:"auto_tle"`
+	Grid      string   `json:"grid"`
+	AltM      int      `json:"alt_m"`
+
+	// The az/el rotator.
+	RotOn        bool   `json:"rot_on"`
+	RotType      string `json:"rot_type"`
+	RotPstPort   int    `json:"rot_pst_port"`
+	RotTransport string `json:"rot_transport"`
+	RotHost      string `json:"rot_host"`
+	RotPort      int    `json:"rot_port"`
+	RotCOM       string `json:"rot_com"`
+	RotBaud      int    `json:"rot_baud"`
+	RotMaxAz     int    `json:"rot_max_az"`
+	RotMinEl     int    `json:"rot_min_el"`
+	RotStep      int    `json:"rot_step"`
+	RotPark      bool   `json:"rot_park"`
+}
+
+// SatTransponder is one path through a satellite, as the UI needs it.
+type SatTransponder struct {
+	Label     string  `json:"label"`
+	Mode      string  `json:"mode"`
+	DownLo    int64   `json:"down_lo"`
+	DownHi    int64   `json:"down_hi"`
+	UpLo      int64   `json:"up_lo"`
+	UpHi      int64   `json:"up_hi"`
+	Inverting bool    `json:"inverting"`
+	CTCSS     float64 `json:"ctcss"`
+	Linear    bool    `json:"linear"`
+}
+
+// SatBird is a satellite as the operator sees it: the frequency plan joined to
+// whatever elements we hold for it.
+type SatBird struct {
+	Name          string           `json:"name"`
+	NORAD         int              `json:"norad"`
+	Geostationary bool             `json:"geostationary"`
+	Favorite      bool             `json:"favorite"`
+	HasElements   bool             `json:"has_elements"`
+	ElementName   string           `json:"element_name"` // the feed's spelling, when it differs
+	EpochAgeH     float64          `json:"epoch_age_h"`
+	Transponders  []SatTransponder `json:"transponders"`
+}
+
+// SatTLEInfo describes the element set the station is working from.
+type SatTLEInfo struct {
+	Count     int       `json:"count"`
+	FetchedAt time.Time `json:"fetched_at"`
+	AgeH      float64   `json:"age_h"`
+	Stale     bool      `json:"stale"`
+	Custom    int       `json:"custom"` // hand-entered satellites among the count
+}
+
+// SatTuning is where to listen and where to transmit, right now.
+//
+// Both the nominal and the corrected pair are returned on purpose: the nominal
+// is what goes in the log (see the ADIF note on SAT_NAME) and the corrected is
+// what goes to the radio. An operator staring at a display that shows only one
+// of them cannot tell a Doppler correction from a mistuned transponder.
+type SatTuning struct {
+	Name        string  `json:"name"`
+	Transponder string  `json:"transponder"`
+	Mode        string  `json:"mode"`
+	NominalDown int64   `json:"nominal_down"`
+	NominalUp   int64   `json:"nominal_up"`
+	DownHz      int64   `json:"down_hz"`
+	UpHz        int64   `json:"up_hz"`
+	CTCSS       float64 `json:"ctcss"`
+	Inverting   bool    `json:"inverting"`
+
+	Az        float64   `json:"az"`
+	El        float64   `json:"el"`
+	RangeKm   float64   `json:"range_km"`
+	RangeRate float64   `json:"range_rate"`
+	Visible   bool      `json:"visible"`
+	At        time.Time `json:"at"`
+
+	// Where the satellite is over the earth. Carried with the tuning because
+	// they are read together and change together — the panel would otherwise ask
+	// twice a second for two halves of one instant.
+	Lat       float64 `json:"lat"`
+	Lon       float64 `json:"lon"`
+	AltKm     float64 `json:"alt_km"`
+	Footprint float64 `json:"footprint_km"`
+}
+
+// SatPassInfo is the pass in progress, or the next one.
+//
+// Separate from the tuning and polled far more slowly: predicting a pass steps
+// the orbit thirty seconds at a time across hours, which is not something to do
+// once a second for a countdown a browser can run itself from two timestamps.
+type SatPassInfo struct {
+	Name    string `json:"name"`
+	HasPass bool   `json:"has_pass"`
+	// InPass distinguishes "it is up now" from "it rises at". The pass in
+	// progress is reported whatever its maximum elevation: an operator watching
+	// a satellite go over does not want it hidden because it fell below the
+	// threshold that filters the TABLE of what is worth waiting for.
+	InPass   bool      `json:"in_pass"`
+	AOS      time.Time `json:"aos"`
+	LOS      time.Time `json:"los"`
+	AOSAz    float64   `json:"aos_az"`
+	LOSAz    float64   `json:"los_az"`
+	MaxEl    float64   `json:"max_el"`
+	MaxElAz  float64   `json:"max_el_az"`
+	MaxElAt  time.Time `json:"max_el_at"`
+	Duration float64   `json:"duration_s"`
+}
+
+// ── Lifecycle ───────────────────────────────────────────────────────────────
+
+// startSatellites loads what is already on disk and, only if asked, goes to the
+// network.
+//
+// Cache first and synchronously: it is one file and a few hundred parses, and
+// it means the satellite tab is populated the instant it is opened, on a shack
+// PC with no internet as much as on one with. The fetch is the slow, optional
+// half and never blocks a launch.
+func (a *App) startSatellites() {
+	dir := a.dataDir
+	birds, err := sat.LoadBirds(dir)
+	if err != nil {
+		// LoadBirds always returns a usable list; the error says the operator's
+		// own file was refused, which they need to be told about.
+		applog.Printf("sat: %v", err)
+	}
+	store := sat.NewStore()
+	fetch := sat.NewFetcher(dir)
+	fetch.Logf = applog.Printf
+
+	if els, at, err := fetch.LoadCache(); err == nil {
+		store.Replace(els, at)
+		applog.Printf("sat: %d satellites from the cached element set (%s old)", len(els), time.Since(at).Round(time.Minute))
+	} else if !os.IsNotExist(err) {
+		applog.Printf("sat: the cached element set could not be read: %v", err)
+	}
+	a.satMu.Lock()
+	a.satStore, a.satBirds, a.satFetch = store, birds, fetch
+	a.satMu.Unlock()
+	a.loadCustomElements()
+
+	set := a.satSettings()
+	if set.AutoTLE && a.satTLEInfo().Stale {
+		go func() {
+			if _, err := a.RefreshSatelliteTLE(); err != nil {
+				applog.Printf("sat: %v", err)
+			}
+		}()
+	}
+}
+
+// satParts hands back the three pieces under the lock, building them if the
+// startup path has not run — a binding called from a tab the operator opened
+// before startup finished must not answer "no satellites".
+func (a *App) satParts() (*sat.Store, *sat.Birds, *sat.Fetcher) {
+	a.satMu.Lock()
+	if a.satStore == nil {
+		a.satMu.Unlock()
+		a.startSatellites()
+		a.satMu.Lock()
+	}
+	s, b, f := a.satStore, a.satBirds, a.satFetch
+	a.satMu.Unlock()
+	return s, b, f
+}
+
+// ── Settings ────────────────────────────────────────────────────────────────
+
+func (a *App) satSettings() SatSettings {
+	// The rotator defaults are the common case, not a blank form: EasyComm over
+	// a serial port at 9600, a 360° machine, and a five-degree step — which on a
+	// beam with any gain at all is well inside the beamwidth and keeps a pass
+	// from being a command a second.
+	out := SatSettings{
+		MinEl: 10, WindowH: 24, AutoTLE: true,
+		RotType: satRotEasycomm, RotPstPort: 12000,
+		RotTransport: "serial", RotPort: 4533, RotBaud: 9600,
+		RotMaxAz: 360, RotMinEl: 0, RotStep: 5,
+	}
+	if a.settings == nil {
+		return out
+	}
+	m, err := a.settings.GetMany(a.ctx,
+		keySatFavorites, keySatMinEl, keySatWindowH, keySatAutoTLE, keySatGrid, keySatAltM,
+		keySatRotOn, keySatRotType, keySatRotPstPort, keySatRotTransport, keySatRotHost, keySatRotPort, keySatRotCOM,
+		keySatRotBaud, keySatRotMaxAz, keySatRotMinEl, keySatRotStep, keySatRotPark)
+	if err != nil {
+		return out
+	}
+	out.RotOn = m[keySatRotOn] == "1"
+	if ty := m[keySatRotType]; ty == satRotPst || ty == satRotEasycomm {
+		out.RotType = ty
+	}
+	if v, err := strconv.Atoi(m[keySatRotPstPort]); err == nil && v > 0 && v <= 65535 {
+		out.RotPstPort = v
+	}
+	if tr := m[keySatRotTransport]; tr == "tcp" || tr == "serial" {
+		out.RotTransport = tr
+	}
+	out.RotHost = strings.TrimSpace(m[keySatRotHost])
+	if v, err := strconv.Atoi(m[keySatRotPort]); err == nil && v > 0 && v <= 65535 {
+		out.RotPort = v
+	}
+	out.RotCOM = strings.TrimSpace(m[keySatRotCOM])
+	if v, err := strconv.Atoi(m[keySatRotBaud]); err == nil && v >= 1200 && v <= 115200 {
+		out.RotBaud = v
+	}
+	if v, err := strconv.Atoi(m[keySatRotMaxAz]); err == nil && v == 450 {
+		out.RotMaxAz = 450
+	}
+	if v, err := strconv.Atoi(m[keySatRotMinEl]); err == nil && v >= -10 && v <= 30 {
+		out.RotMinEl = v
+	}
+	if v, err := strconv.Atoi(m[keySatRotStep]); err == nil && v >= 1 && v <= 30 {
+		out.RotStep = v
+	}
+	out.RotPark = m[keySatRotPark] == "1"
+	for _, n := range strings.Split(m[keySatFavorites], ",") {
+		if n = strings.TrimSpace(n); n != "" {
+			out.Favorites = append(out.Favorites, n)
+		}
+	}
+	if v, err := strconv.Atoi(m[keySatMinEl]); err == nil && v >= 0 && v <= 60 {
+		out.MinEl = v
+	}
+	if v, err := strconv.Atoi(m[keySatWindowH]); err == nil && v >= 1 && v <= 168 {
+		out.WindowH = v
+	}
+	if v, ok := m[keySatAutoTLE]; ok && v != "" {
+		out.AutoTLE = v == "1"
+	}
+	out.Grid = strings.TrimSpace(m[keySatGrid])
+	if v, err := strconv.Atoi(m[keySatAltM]); err == nil && v > -500 && v < 9000 {
+		out.AltM = v
+	}
+	return out
+}
+
+// GetSatSettings returns the satellite preferences.
+func (a *App) GetSatSettings() (SatSettings, error) {
+	if a.settings == nil {
+		return SatSettings{}, fmt.Errorf("db not initialized")
+	}
+	return a.satSettings(), nil
+}
+
+// SaveSatSettings stores them.
+func (a *App) SaveSatSettings(s SatSettings) error {
+	if a.settings == nil {
+		return fmt.Errorf("db not initialized")
+	}
+	if s.MinEl < 0 || s.MinEl > 60 {
+		s.MinEl = 10
+	}
+	if s.WindowH < 1 || s.WindowH > 168 {
+		s.WindowH = 24
+	}
+	var favs []string
+	seen := map[string]bool{}
+	for _, n := range s.Favorites {
+		n = strings.TrimSpace(n)
+		if n == "" || seen[strings.ToUpper(n)] {
+			continue
+		}
+		seen[strings.ToUpper(n)] = true
+		favs = append(favs, n)
+	}
+	if s.RotType != satRotPst {
+		s.RotType = satRotEasycomm
+	}
+	if s.RotPstPort <= 0 || s.RotPstPort > 65535 {
+		s.RotPstPort = 12000
+	}
+	if s.RotTransport != "tcp" {
+		s.RotTransport = "serial"
+	}
+	if s.RotMaxAz != 450 {
+		s.RotMaxAz = 360
+	}
+	if s.RotStep < 1 || s.RotStep > 30 {
+		s.RotStep = 5
+	}
+	if s.RotPort <= 0 || s.RotPort > 65535 {
+		s.RotPort = 4533
+	}
+	if s.RotBaud < 1200 || s.RotBaud > 115200 {
+		s.RotBaud = 9600
+	}
+	for k, v := range map[string]string{
+		keySatFavorites:    strings.Join(favs, ","),
+		keySatMinEl:        strconv.Itoa(s.MinEl),
+		keySatWindowH:      strconv.Itoa(s.WindowH),
+		keySatAutoTLE:      boolStr(s.AutoTLE),
+		keySatGrid:         strings.ToUpper(strings.TrimSpace(s.Grid)),
+		keySatAltM:         strconv.Itoa(s.AltM),
+		keySatRotOn:        boolStr(s.RotOn),
+		keySatRotType:      s.RotType,
+		keySatRotPstPort:   strconv.Itoa(s.RotPstPort),
+		keySatRotTransport: s.RotTransport,
+		keySatRotHost:      strings.TrimSpace(s.RotHost),
+		keySatRotPort:      strconv.Itoa(s.RotPort),
+		keySatRotCOM:       strings.TrimSpace(s.RotCOM),
+		keySatRotBaud:      strconv.Itoa(s.RotBaud),
+		keySatRotMaxAz:     strconv.Itoa(s.RotMaxAz),
+		keySatRotMinEl:     strconv.Itoa(s.RotMinEl),
+		keySatRotStep:      strconv.Itoa(s.RotStep),
+		keySatRotPark:      boolStr(s.RotPark),
+	} {
+		if err := a.settings.Set(a.ctx, k, v); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// satObserver is the ground station: the satellite grid if the operator set one,
+// otherwise the station's own.
+//
+// A locator, not a latitude and longitude: it is what every logbook already
+// holds, and its six-character precision is a couple of kilometres — three
+// hundredths of a degree of azimuth at the worst possible geometry, far below
+// any rotator's backlash.
+func (a *App) satObserver() (sat.Observer, error) {
+	set := a.satSettings()
+	grid := set.Grid
+	if grid == "" && a.profiles != nil {
+		// The station locator lives on the ACTIVE PROFILE, not in a settings key.
+		// keyStationMyGrid is a legacy key that EnsureDefault migrated into the
+		// profile years ago and nothing writes any more — reading it told an
+		// operator with a perfectly good locator on screen that he had not set
+		// one.
+		if p, err := a.profiles.Active(a.ctx); err == nil {
+			grid = p.MyGrid
+		}
+	}
+	grid = strings.TrimSpace(grid)
+	lat, lon, ok := gridToLatLon(grid)
+	if !ok {
+		return sat.Observer{}, fmt.Errorf("your locator is not set — Settings ▸ Station, or Settings ▸ Satellites for a different site")
+	}
+	return sat.Observer{Lat: lat, Lon: lon, AltM: float64(set.AltM)}, nil
+}
+
+// GetSatelliteObserver reports the ground station the predictions are made for,
+// so the UI can show it — and say plainly when there is none.
+func (a *App) GetSatelliteObserver() (map[string]any, error) {
+	obs, err := a.satObserver()
+	if err != nil {
+		return nil, err
+	}
+	return map[string]any{"lat": obs.Lat, "lon": obs.Lon, "alt_m": obs.AltM}, nil
+}
+
+// ── Elements ────────────────────────────────────────────────────────────────
+
+func (a *App) customTLEPath() string { return filepath.Join(a.dataDir, customTLEName) }
+
+// loadCustomElements merges the hand-entered file over the feed's set. Last
+// writer wins in the store, so an operator's own elements for a satellite
+// override the feed's — which is the whole point of having typed them.
+func (a *App) loadCustomElements() int {
+	f, err := os.Open(a.customTLEPath())
+	if err != nil {
+		return 0
+	}
+	defer f.Close()
+	els, skipped, err := sat.ParseTLESet(f)
+	if err != nil {
+		applog.Printf("sat: %s could not be read: %v", customTLEName, err)
+		return 0
+	}
+	if skipped > 0 {
+		applog.Printf("sat: %d entries in %s were unusable", skipped, customTLEName)
+	}
+	store, _, _ := a.satParts()
+	for _, e := range els {
+		store.Put(e)
+	}
+	return len(els)
+}
+
+func (a *App) customElementCount() int {
+	f, err := os.Open(a.customTLEPath())
+	if err != nil {
+		return 0
+	}
+	defer f.Close()
+	els, _, err := sat.ParseTLESet(f)
+	if err != nil {
+		return 0
+	}
+	return len(els)
+}
+
+func (a *App) satTLEInfo() SatTLEInfo {
+	store, _, _ := a.satParts()
+	at := store.FetchedAt()
+	info := SatTLEInfo{Count: store.Len(), FetchedAt: at, Custom: a.customElementCount()}
+	if !at.IsZero() {
+		info.AgeH = time.Since(at).Hours()
+		info.Stale = time.Since(at) > sat.StaleAfter
+	} else {
+		info.Stale = true // nothing on disk yet: the operator has to be told to fetch
+	}
+	return info
+}
+
+// GetSatelliteTLEInfo describes the element set, including how old it is.
+func (a *App) GetSatelliteTLEInfo() SatTLEInfo { return a.satTLEInfo() }
+
+// RefreshSatelliteTLE downloads a fresh element set.
+func (a *App) RefreshSatelliteTLE() (SatTLEInfo, error) {
+	store, _, fetch := a.satParts()
+	ctx := a.ctx
+	if ctx == nil {
+		ctx = context.Background()
+	}
+	els, err := fetch.Fetch(ctx)
+	if err != nil {
+		return a.satTLEInfo(), err
+	}
+	store.Replace(els, time.Now())
+	a.loadCustomElements() // the operator's own elements go back on top
+	info := a.satTLEInfo()
+	if a.ctx != nil {
+		wruntime.EventsEmit(a.ctx, "sat:tle", info)
+	}
+	return info, nil
+}
+
+// AddSatelliteElements takes elements pasted in by hand — two or three lines
+// per satellite — and keeps them across feed refreshes.
+func (a *App) AddSatelliteElements(text string) (int, error) {
+	els, skipped, err := sat.ParseTLESet(strings.NewReader(text))
+	if err != nil {
+		return 0, fmt.Errorf("those are not usable elements: %w", err)
+	}
+	existing := map[string]bool{}
+	var keep []sat.Element
+	if f, ferr := os.Open(a.customTLEPath()); ferr == nil {
+		old, _, _ := sat.ParseTLESet(f)
+		f.Close()
+		keep = old
+	}
+	// The new set wins for a satellite already in the file: pasting elements is
+	// how an operator UPDATES a bird the feeds do not carry.
+	for _, e := range els {
+		existing[strings.ToUpper(e.Name)] = true
+	}
+	var out []sat.Element
+	for _, e := range keep {
+		if !existing[strings.ToUpper(e.Name)] {
+			out = append(out, e)
+		}
+	}
+	out = append(out, els...)
+
+	var b strings.Builder
+	for _, e := range out {
+		if e.Name != "" {
+			b.WriteString(e.Name + "\n")
+		}
+		b.WriteString(e.Line1 + "\n" + e.Line2 + "\n")
+	}
+	if err := os.WriteFile(a.customTLEPath(), []byte(b.String()), 0o644); err != nil {
+		return 0, err
+	}
+	n := a.loadCustomElements()
+	if a.ctx != nil {
+		wruntime.EventsEmit(a.ctx, "sat:tle", a.satTLEInfo())
+	}
+	if skipped > 0 {
+		applog.Printf("sat: %d pasted entries were unusable and were skipped", skipped)
+	}
+	return n, nil
+}
+
+// ── The list ────────────────────────────────────────────────────────────────
+
+// GetSatelliteBirds joins the frequency plan to the elements.
+//
+// Both halves are listed, not just their intersection: a bird with elements and
+// no plan is one the operator can still track and add frequencies for, and a
+// bird with a plan and no elements is the one visible symptom of an element set
+// that is too old or too narrow — silently dropping either turns a fixable
+// configuration problem into a satellite that "does not exist".
+func (a *App) GetSatelliteBirds() []SatBird {
+	store, birds, _ := a.satParts()
+	set := a.satSettings()
+	fav := map[string]bool{}
+	for _, n := range set.Favorites {
+		fav[strings.ToUpper(n)] = true
+	}
+
+	out := make([]SatBird, 0, birds.Len())
+	planned := map[string]bool{}
+	for _, b := range birds.All() {
+		item := SatBird{Name: b.Name, Geostationary: b.Geostationary, Favorite: fav[strings.ToUpper(b.Name)]}
+		for _, t := range b.Transponders {
+			item.Transponders = append(item.Transponders, SatTransponder{
+				Label: t.Label, Mode: t.Mode,
+				DownLo: t.DownLo, DownHi: t.DownHi, UpLo: t.UpLo, UpHi: t.UpHi,
+				Inverting: t.Inverting, CTCSS: t.CTCSS, Linear: t.Linear(),
+			})
+		}
+		if e, ok := satElement(store, b); ok {
+			item.HasElements = true
+			item.NORAD = e.NORAD
+			item.EpochAgeH = e.Age().Hours()
+			planned[strings.ToUpper(e.Name)] = true
+			if !strings.EqualFold(e.Name, b.Name) {
+				item.ElementName = e.Name
+			}
+		}
+		out = append(out, item)
+	}
+	// The rest of the element set, so nothing the station holds is invisible.
+	for _, n := range store.Names() {
+		if planned[strings.ToUpper(n)] {
+			continue
+		}
+		e, ok := store.Get(n)
+		if !ok {
+			continue
+		}
+		out = append(out, SatBird{
+			Name: e.Name, NORAD: e.NORAD, HasElements: true,
+			EpochAgeH: e.Age().Hours(), Favorite: fav[strings.ToUpper(e.Name)],
+		})
+	}
+	sort.Slice(out, func(i, j int) bool {
+		// Favourites first, then the birds we can actually use, then by name.
+		if out[i].Favorite != out[j].Favorite {
+			return out[i].Favorite
+		}
+		iu := len(out[i].Transponders) > 0 && out[i].HasElements
+		ju := len(out[j].Transponders) > 0 && out[j].HasElements
+		if iu != ju {
+			return iu
+		}
+		return out[i].Name < out[j].Name
+	})
+	return out
+}
+
+// GetSatelliteNames is the list behind the entry form's SAT_NAME box.
+//
+// One list, not two. It used to be a text box in Settings ▸ Lists that an
+// operator typed their birds into by hand, which then had nothing to do with
+// the satellites the tracker knew — the same station kept two lists of the same
+// satellites and they drifted apart. This is the followed set (or every
+// satellite with a frequency plan, when none is followed), plus anything the
+// old hand-kept list still holds so nobody's typing is thrown away.
+//
+// SAT_NAME is compared character for character by the awards and by LoTW, so
+// offering the spelling already used beats inventing a new one every pass.
+func (a *App) GetSatelliteNames() []string {
+	seen := map[string]bool{}
+	var out []string
+	add := func(n string) {
+		n = strings.ToUpper(strings.TrimSpace(n))
+		if n == "" || seen[n] {
+			return
+		}
+		seen[n] = true
+		out = append(out, n)
+	}
+	for _, n := range a.satNames(nil) {
+		add(n)
+	}
+	// The legacy list. Read, never written: the panel that edited it is gone,
+	// and what it holds is somebody's past work.
+	if a.settings != nil {
+		if raw, _ := a.settings.Get(a.ctx, keyListsSatellites); raw != "" {
+			var legacy []string
+			if json.Unmarshal([]byte(raw), &legacy) == nil {
+				for _, n := range legacy {
+					add(n)
+				}
+			}
+		}
+	}
+	sort.Strings(out)
+	return out
+}
+
+// satElement finds the elements for a bird, trying its aliases.
+//
+// The feed's name and the operator's name for the same satellite are routinely
+// different, and the element set is keyed by the feed's.
+func satElement(store *sat.Store, b sat.Bird) (sat.Element, bool) {
+	if e, ok := store.Get(b.Name); ok {
+		return e, true
+	}
+	for _, alias := range b.Aliases {
+		if e, ok := store.Get(alias); ok {
+			return e, true
+		}
+	}
+	// Last resort: scan, matching on letters and digits alone — that is how
+	// "RADFXSAT (FOX-1B)" and "AO-91" meet.
+	for _, n := range store.Names() {
+		if b.Matches(n) {
+			if e, ok := store.Get(n); ok {
+				return e, true
+			}
+		}
+	}
+	return sat.Element{}, false
+}
+
+// ── Tracking ────────────────────────────────────────────────────────────────
+
+// satNames resolves the names the UI asked for, falling back to the favourites
+// and then to every planned bird we hold elements for.
+func (a *App) satNames(names []string) []string {
+	if len(names) > 0 {
+		return names
+	}
+	set := a.satSettings()
+	if len(set.Favorites) > 0 {
+		return set.Favorites
+	}
+	var out []string
+	for _, b := range a.GetSatelliteBirds() {
+		if b.HasElements && len(b.Transponders) > 0 {
+			out = append(out, b.Name)
+		}
+	}
+	return out
+}
+
+// satResolve maps an operator-facing name onto the element set's own spelling.
+func (a *App) satResolve(name string) (string, bool) {
+	store, birds, _ := a.satParts()
+	if _, ok := store.Get(name); ok {
+		return name, true
+	}
+	if b, ok := birds.Find(name); ok {
+		if e, ok2 := satElement(store, b); ok2 {
+			return e.Name, true
+		}
+	}
+	return "", false
+}
+
+// GetSatellitePositions is where the given satellites are right now — the map's
+// question, and the rotator's.
+func (a *App) GetSatellitePositions(names []string) ([]sat.Position, error) {
+	obs, err := a.satObserver()
+	if err != nil {
+		return nil, err
+	}
+	store, _, _ := a.satParts()
+	now := time.Now().UTC()
+	var out []sat.Position
+	for _, n := range a.satNames(names) {
+		real, ok := a.satResolve(n)
+		if !ok {
+			continue
+		}
+		p, err := store.Track(real, obs, now)
+		if err != nil {
+			continue
+		}
+		p.Name = n // answer in the operator's vocabulary, not the feed's
+		out = append(out, p)
+	}
+	return out, nil
+}
+
+// GetSatelliteGroundTrack is the path a satellite draws over the ground, for
+// the map: one point a minute, forward from now.
+func (a *App) GetSatelliteGroundTrack(name string, minutes int) ([]sat.Position, error) {
+	if minutes <= 0 || minutes > 360 {
+		minutes = 120
+	}
+	obs, err := a.satObserver()
+	if err != nil {
+		return nil, err
+	}
+	real, ok := a.satResolve(name)
+	if !ok {
+		return nil, fmt.Errorf("%s is not in the element set", name)
+	}
+	store, _, _ := a.satParts()
+	now := time.Now().UTC()
+	out := make([]sat.Position, 0, minutes+1)
+	for i := 0; i <= minutes; i++ {
+		p, err := store.Track(real, obs, now.Add(time.Duration(i)*time.Minute))
+		if err != nil {
+			return nil, err
+		}
+		p.Name = name
+		out = append(out, p)
+	}
+	return out, nil
+}
+
+// GetSatellitePasses lists what is coming, in time order.
+func (a *App) GetSatellitePasses(names []string, hours int) ([]sat.Pass, error) {
+	obs, err := a.satObserver()
+	if err != nil {
+		return nil, err
+	}
+	set := a.satSettings()
+	if hours <= 0 {
+		hours = set.WindowH
+	}
+	if hours > 168 {
+		hours = 168
+	}
+	store, _, _ := a.satParts()
+	want := a.satNames(names)
+	// The store is keyed by the feed's names; remember which operator name each
+	// answer belongs to so the table reads the way the operator thinks.
+	real := make([]string, 0, len(want))
+	back := map[string]string{}
+	for _, n := range want {
+		r, ok := a.satResolve(n)
+		if !ok {
+			continue
+		}
+		real = append(real, r)
+		back[r] = n
+	}
+	passes := store.NextPasses(real, obs, time.Now().UTC(), time.Duration(hours)*time.Hour, set.MinEl)
+	for i := range passes {
+		if n, ok := back[passes[i].Name]; ok {
+			passes[i].Name = n
+		}
+	}
+	return passes, nil
+}
+
+// SatSkyPoint is one moment of a pass as the antenna sees it.
+type SatSkyPoint struct {
+	At time.Time `json:"at"`
+	Az float64   `json:"az"`
+	El float64   `json:"el"`
+}
+
+// GetSatelliteSkyTrack is the pass drawn as a path across the sky.
+//
+// The map answers "where is it over the earth"; this answers "where do I look",
+// which on a pass is the question that matters. An operator reading a polar
+// plot knows in one glance whether the bird comes over the top or clips the
+// horizon behind the house — something no amount of azimuth and elevation
+// digits conveys.
+func (a *App) GetSatelliteSkyTrack(name string, points int) ([]SatSkyPoint, error) {
+	if points < 8 || points > 400 {
+		points = 120
+	}
+	p, err := a.GetSatelliteNextPass(name)
+	if err != nil {
+		return nil, err
+	}
+	if !p.HasPass {
+		return nil, nil
+	}
+	obs, err := a.satObserver()
+	if err != nil {
+		return nil, err
+	}
+	real, ok := a.satResolve(name)
+	if !ok {
+		return nil, fmt.Errorf("%s is not in the element set", name)
+	}
+	store, _, _ := a.satParts()
+	span := p.LOS.Sub(p.AOS)
+	if span <= 0 {
+		return nil, nil
+	}
+	out := make([]SatSkyPoint, 0, points+1)
+	for i := 0; i <= points; i++ {
+		at := p.AOS.Add(time.Duration(float64(span) * float64(i) / float64(points)))
+		pos, err := store.Track(real, obs, at)
+		if err != nil {
+			return nil, err
+		}
+		// Below the horizon at the very ends, by a fraction of a degree, because
+		// the pass boundaries come from a coarser search than this sampling. A
+		// negative elevation would draw the track outside the horizon circle.
+		if pos.El < 0 {
+			pos.El = 0
+		}
+		out = append(out, SatSkyPoint{At: at.UTC(), Az: pos.Az, El: pos.El})
+	}
+	return out, nil
+}
+
+// GetSatelliteNextPass is the pass in progress, or the next one to come.
+//
+// The one question that decides whether an operator sits down at the radio, and
+// the reason a satellite tab is worth having at all: how long have I got, and
+// how high does it get.
+func (a *App) GetSatelliteNextPass(name string) (SatPassInfo, error) {
+	out := SatPassInfo{Name: name}
+	obs, err := a.satObserver()
+	if err != nil {
+		return out, err
+	}
+	real, ok := a.satResolve(name)
+	if !ok {
+		return out, fmt.Errorf("%s is not in the element set", name)
+	}
+	store, _, _ := a.satParts()
+	now := time.Now().UTC()
+	// From a little before now: a pass that started two minutes ago is the one
+	// the operator is in, and asking from this instant would skip it and report
+	// the next orbit instead — an hour and a half away, while the satellite is
+	// overhead.
+	from := now.Add(-30 * time.Minute)
+	// Elevation zero, not the operator's minimum. That threshold filters the
+	// table of passes worth waiting for; it must not hide the pass they are
+	// actually working.
+	passes, err := store.Passes(real, obs, from, now.Add(26*time.Hour), 0)
+	if err != nil {
+		return out, err
+	}
+	for _, p := range passes {
+		if p.LOS.Before(now) {
+			continue // already over
+		}
+		out.HasPass = true
+		out.InPass = !p.AOS.After(now)
+		out.AOS, out.LOS = p.AOS, p.LOS
+		out.AOSAz, out.LOSAz = p.AOSAz, p.LOSAz
+		out.MaxEl, out.MaxElAz, out.MaxElAt = p.MaxEl, p.MaxElAz, p.MaxElAt
+		out.Duration = p.Duration
+		return out, nil
+	}
+	return out, nil
+}
+
+// GetSatelliteTuning is the working answer: where to listen, where to transmit,
+// and where the bird is, for one satellite and one transponder.
+//
+// downHz is where the operator has tuned inside the passband, in NOMINAL terms
+// — 0 means the middle of it. Keeping the operator's frequency nominal, and
+// applying Doppler only on the way out to the radio, is what makes a linear
+// pass workable: the station being answered stays put on the dial while both
+// radios chase the shift.
+func (a *App) GetSatelliteTuning(name string, transponder int, downHz int64) (SatTuning, error) {
+	_, birds, _ := a.satParts()
+	b, ok := birds.Find(name)
+	if !ok {
+		return SatTuning{}, fmt.Errorf("%s has no frequency plan — add one in %s", name, sat.BirdsName)
+	}
+	if transponder < 0 || transponder >= len(b.Transponders) {
+		transponder = 0
+	}
+	if len(b.Transponders) == 0 {
+		return SatTuning{}, fmt.Errorf("%s has no transponder listed", b.Name)
+	}
+	t := b.Transponders[transponder]
+	if downHz <= 0 {
+		// While the tracker is running it owns the nominal frequency — it moves
+		// as the operator tunes. Reading the centre of the passband instead would
+		// show a frequency nobody is on the moment they hunt for a station.
+		downHz = a.satTrackedNominal(b.Name, transponder)
+	}
+	if downHz <= 0 {
+		downHz = t.Centre()
+	}
+	out := SatTuning{
+		Name:        b.Name,
+		Transponder: t.Label,
+		Mode:        t.Mode,
+		NominalDown: downHz,
+		NominalUp:   t.UplinkFor(downHz),
+		CTCSS:       t.CTCSS,
+		Inverting:   t.Inverting,
+		At:          time.Now().UTC(),
+	}
+	// Geostationary: it does not move, so there is nothing to correct and no
+	// look angle worth recomputing every second. QO-100 is simply pointed at
+	// once and left alone.
+	if b.Geostationary {
+		out.DownHz, out.UpHz = out.NominalDown, out.NominalUp
+		out.Visible = true
+		return out, nil
+	}
+
+	obs, err := a.satObserver()
+	if err != nil {
+		// No locator: the frequencies are still worth having, uncorrected.
+		out.DownHz, out.UpHz = out.NominalDown, out.NominalUp
+		return out, nil
+	}
+	real, ok := a.satResolve(name)
+	if !ok {
+		out.DownHz, out.UpHz = out.NominalDown, out.NominalUp
+		return out, fmt.Errorf("%s is not in the element set — refresh the elements", b.Name)
+	}
+	store, _, _ := a.satParts()
+	p, err := store.Track(real, obs, out.At)
+	if err != nil {
+		out.DownHz, out.UpHz = out.NominalDown, out.NominalUp
+		return out, err
+	}
+	sh := sat.Doppler(p, out.NominalDown, out.NominalUp)
+	out.DownHz, out.UpHz = sh.DownHz, sh.UpHz
+	out.Az, out.El, out.RangeKm, out.RangeRate = p.Az, p.El, p.RangeKm, p.RangeRate
+	out.Lat, out.Lon, out.AltKm, out.Footprint = p.Lat, p.Lon, p.AltKm, p.Footprint
+	out.Visible = p.Visible()
+	return out, nil
+}

app_sat_rotator.go

@@ -0,0 +1,140 @@
+package main
+
+// The two ways a satellite station points its antenna.
+//
+// Some operators drive their az/el rotator directly — EasyComm II, what
+// SatPC32 and Gpredict speak. Others already run PstRotator, which sits between
+// them and a dozen different controllers and handles az AND el; for those,
+// OpsLog talking to the controller itself would be a second program fighting
+// PstRotator over the same cable.
+//
+// So both, behind one small interface, chosen in Settings. Neither is more
+// "correct" than the other: the right one is whichever the station already has
+// working.
+
+import (
+	"fmt"
+	"math"
+	"strings"
+	"sync"
+
+	"hamlog/internal/rotator/easycomm"
+	"hamlog/internal/rotator/pst"
+)
+
+// satRotator is what the tracker needs of an antenna: point it, ask where it
+// is, and let go of it at the end of the pass.
+type satRotator interface {
+	Point(az, el float64) error
+	// Heading reports where the antenna is. live is false when the answer is
+	// the last commanded position rather than a reading — a stuck rotator must
+	// not be able to hide behind an order it never carried out.
+	Heading() (az, el float64, live bool, err error)
+	Close()
+}
+
+// The rotator kinds, as stored.
+const (
+	satRotEasycomm = "easycomm"
+	satRotPst      = "pstrotator"
+)
+
+// newSatRotator builds the configured controller.
+func newSatRotator(s SatSettings) (satRotator, error) {
+	switch s.RotType {
+	case satRotPst:
+		if strings.TrimSpace(s.RotHost) == "" && s.RotPort <= 0 {
+			return nil, fmt.Errorf("no address for PstRotator")
+		}
+		return &pstSatRotator{c: pst.New(s.RotHost, s.RotPstPort), maxAz: s.RotMaxAz}, nil
+	default:
+		if s.RotTransport == "tcp" {
+			if strings.TrimSpace(s.RotHost) == "" {
+				return nil, fmt.Errorf("no address for the rotator")
+			}
+			return easycomm.New(s.RotHost, s.RotPort, s.RotMaxAz), nil
+		}
+		if strings.TrimSpace(s.RotCOM) == "" {
+			return nil, fmt.Errorf("no COM port for the rotator")
+		}
+		return easycomm.NewSerial(s.RotCOM, s.RotBaud, s.RotMaxAz), nil
+	}
+}
+
+// pstSatRotator points the antenna through PstRotator.
+//
+// PstRotator takes whole degrees and does its own overlap handling for a 450°
+// rotator — it knows which controller is on the other end, and OpsLog does not.
+// So the azimuth is sent plainly, and the 450° logic that EasyComm needs is
+// deliberately NOT applied here: two programs each deciding to go the long way
+// round is how an antenna ends up unwinding in the middle of a pass.
+type pstSatRotator struct {
+	c     *pst.Client
+	maxAz int
+
+	mu sync.Mutex
+	// lastAz/lastEl are what was commanded, for the display when PstRotator
+	// does not answer a position query — which is the usual case for the many
+	// setups whose controller reports nothing back to it either.
+	lastAz, lastEl float64
+	commanded      bool
+	azSilent       bool // the azimuth query went unanswered; stop asking
+	elSilent       bool // likewise for elevation, and far more common
+}
+
+func (p *pstSatRotator) Point(az, el float64) error {
+	a := math.Mod(az, 360)
+	if a < 0 {
+		a += 360
+	}
+	if el < 0 {
+		el = 0
+	}
+	if el > 180 {
+		el = 180
+	}
+	if err := p.c.GoTo(int(math.Round(a)), true, int(math.Round(el))); err != nil {
+		return err
+	}
+	p.mu.Lock()
+	p.lastAz, p.lastEl, p.commanded = a, el, true
+	p.mu.Unlock()
+	return nil
+}
+
+func (p *pstSatRotator) Heading() (float64, float64, bool, error) {
+	p.mu.Lock()
+	azSilent, elSilent, la, le, commanded := p.azSilent, p.elSilent, p.lastAz, p.lastEl, p.commanded
+	p.mu.Unlock()
+
+	az, el, live := la, le, false
+	if !azSilent {
+		if v, _, err := p.c.Heading(); err == nil {
+			az, live = float64(v), true
+		} else {
+			// One silence is enough. Each query binds a socket and waits a second
+			// and a half; repeating that every few seconds for a setup that will
+			// never answer is a stall per poll for nothing.
+			p.mu.Lock()
+			p.azSilent = true
+			p.mu.Unlock()
+		}
+	}
+	if !elSilent {
+		if v, _, err := p.c.Elevation(); err == nil {
+			el = float64(v)
+		} else {
+			p.mu.Lock()
+			p.elSilent = true
+			p.mu.Unlock()
+		}
+	}
+	if !live && !commanded {
+		return 0, 0, false, fmt.Errorf("PstRotator does not report the antenna position")
+	}
+	return az, el, live, nil
+}
+
+// Close: nothing to release. Every PstRotator command is one datagram, and the
+// socket lives for the length of a single write.
+func (p *pstSatRotator) Close() {}

app_sat_track.go

@@ -0,0 +1,622 @@
+package main
+
+// Doppler tracking — walking the radio through a pass.
+//
+// The hard part of satellite tuning is not the arithmetic, it is deciding who
+// owns the dial. A tracker that simply forces both frequencies fights the
+// operator every time they turn the knob to follow a station across a linear
+// transponder, and one that never touches the receiver leaves them chasing a
+// signal that slides 9 kHz across a 70 cm pass.
+//
+// So: the operator owns the receiver, and the tracker follows them. Every tick
+// it asks the radio where the receiver actually is. If that is where the tracker
+// put it, nothing has changed and it keeps correcting from the same NOMINAL
+// frequency. If it has moved further than a dial-turn's tolerance, the operator
+// has chosen a new station: the tracker converts what they landed on back into a
+// nominal frequency and carries on from there. The transmitter is derived from
+// the nominal and never argued with — which is exactly the division of labour on
+// a linear bird, where the operator listens and the radio does the sums.
+
+import (
+	"fmt"
+	"math"
+	"strings"
+	"sync"
+	"time"
+
+	wruntime "github.com/wailsapp/wails/v2/pkg/runtime"
+
+	"hamlog/internal/applog"
+	"hamlog/internal/cat"
+	"hamlog/internal/qso"
+	"hamlog/internal/sat"
+)
+
+// satTickEvery is how often the radio is re-pointed. One second: at the middle
+// of a 70 cm pass the downlink moves about 60 Hz a second, which is audible on
+// SSB within two or three of them and inaudible within one.
+const satTickEvery = time.Second
+
+// satDialTolerance is how far the receiver may differ from where the tracker put
+// it before that difference is read as the operator tuning.
+//
+// 200 Hz is comfortably more than the rounding and the round-trip lag between
+// setting a frequency and reading it back, and comfortably less than the
+// smallest deliberate move anybody makes hunting a station on a transponder.
+const satDialTolerance = 200
+
+// satLightKmS is the speed of light in km/s, for turning a heard frequency back
+// into a nominal one. The same constant internal/sat corrects with.
+const satLightKmS = 299792.458
+
+type satTracker struct {
+	name string
+	tp   int
+
+	mu sync.Mutex
+	// nominalDown is where the operator is, expressed as if the satellite were
+	// standing still. Everything else is derived from it, and it is the only
+	// thing a dial movement changes.
+	nominalDown int64
+	lastDown    int64 // what was last sent to the radio
+	lastUp      int64
+	status      SatTrackStatus
+	fails       int
+
+	// The az/el rotator, built once at the start of the pass so a serial port is
+	// opened once rather than on every command. nil when none is configured.
+	rot       satRotator
+	rotStep   float64
+	rotMinE   float64
+	rotPark   bool
+	rotAz     float64 // last commanded, so a step smaller than the beamwidth costs nothing
+	rotEl     float64
+	rotSent   bool
+	rotReadAt time.Time // when the controller was last asked where it is
+
+	stop chan struct{}
+	done chan struct{}
+}
+
+// SatTrackStatus is what the tracker is doing, for the panel.
+type SatTrackStatus struct {
+	On          bool    `json:"on"`
+	Name        string  `json:"name"`
+	Transponder string  `json:"transponder"`
+	Mode        string  `json:"mode"`
+	NominalDown int64   `json:"nominal_down"`
+	NominalUp   int64   `json:"nominal_up"`
+	DownHz      int64   `json:"down_hz"`
+	UpHz        int64   `json:"up_hz"`
+	Az          float64 `json:"az"`
+	El          float64 `json:"el"`
+	Visible     bool    `json:"visible"`
+	Radio       string  `json:"radio"` // what the rig is doing: "sat", "downlink-only", ""
+	Error       string  `json:"error"`
+
+	// Where the antenna is. RotLive distinguishes a reading from the controller
+	// from the last position it was TOLD to go to — a stuck rotator must not be
+	// able to hide behind a command it never carried out.
+	RotOn   bool    `json:"rot_on"`
+	RotAz   float64 `json:"rot_az"`
+	RotEl   float64 `json:"rot_el"`
+	RotLive bool    `json:"rot_live"`
+}
+
+// StartSatelliteTracking arms the radio and starts following the satellite.
+func (a *App) StartSatelliteTracking(name string, transponder int) error {
+	if a.cat == nil {
+		return fmt.Errorf("CAT is not running")
+	}
+	_, birds, _ := a.satParts()
+	b, ok := birds.Find(name)
+	if !ok || len(b.Transponders) == 0 {
+		return fmt.Errorf("%s has no frequency plan to tune to", name)
+	}
+	if transponder < 0 || transponder >= len(b.Transponders) {
+		transponder = 0
+	}
+	a.StopSatelliteTracking()
+
+	t := &satTracker{
+		name:        b.Name,
+		tp:          transponder,
+		nominalDown: b.Transponders[transponder].Centre(),
+		stop:        make(chan struct{}),
+		done:        make(chan struct{}),
+	}
+	t.status = SatTrackStatus{On: true, Name: b.Name, Transponder: b.Transponders[transponder].Label, Mode: b.Transponders[transponder].Mode}
+
+	// The rotator, if there is one. A geostationary bird is pointed at once and
+	// left alone, so it gets one command rather than a loop.
+	set := a.satSettings()
+	if set.RotOn {
+		r, rerr := newSatRotator(set)
+		if rerr != nil {
+			applog.Printf("sat: no rotator: %v", rerr)
+			t.status.Error = rerr.Error()
+		} else {
+			t.rot = r
+			t.rotStep, t.rotMinE, t.rotPark = float64(set.RotStep), float64(set.RotMinEl), set.RotPark
+		}
+	}
+
+	// Arm the radio for the pair. A rig that cannot hold one is NOT a failure:
+	// it can still be tuned to the downlink, which is most of a receive-heavy
+	// pass, and saying so beats refusing to track at all.
+	radio := "downlink-only"
+	if a.cat.SatCapable() {
+		if err := a.cat.SatDo(func(st cat.SatTuner) error { return st.SetSatellite(true) }); err != nil {
+			applog.Printf("sat: could not arm satellite mode: %v", err)
+			t.status.Error = err.Error()
+		} else {
+			radio = "sat"
+		}
+	}
+	t.status.Radio = radio
+
+	a.satTrackMu.Lock()
+	a.satTrack = t
+	a.satTrackMu.Unlock()
+	go a.satTrackLoop(t)
+	applog.Printf("sat: tracking %s (%s), radio %s", t.name, t.status.Transponder, radio)
+	return nil
+}
+
+// StopSatelliteTracking hands the radio back.
+func (a *App) StopSatelliteTracking() {
+	a.satTrackMu.Lock()
+	t := a.satTrack
+	a.satTrack = nil
+	a.satTrackMu.Unlock()
+	if t == nil {
+		return
+	}
+	close(t.stop)
+	<-t.done
+	if a.cat != nil && a.cat.SatCapable() {
+		if err := a.cat.SatDo(func(st cat.SatTuner) error { return st.SetSatellite(false) }); err != nil {
+			applog.Printf("sat: could not disarm satellite mode: %v", err)
+		}
+	}
+	applog.Printf("sat: tracking stopped (%s)", t.name)
+	a.emitSatTrack(SatTrackStatus{})
+}
+
+// TestSatelliteRotator opens the configured controller and asks it where it is.
+//
+// The one question worth asking before a pass: is this port the rotator, and
+// does it talk back? A controller that accepts commands silently is a normal,
+// working one — so that answer is a success with a caveat, not a failure.
+func (a *App) TestSatelliteRotator() (string, error) {
+	set := a.satSettings()
+	if !set.RotOn {
+		return "", fmt.Errorf("the satellite rotator is switched off")
+	}
+	c, err := newSatRotator(set)
+	if err != nil {
+		return "", err
+	}
+	defer c.Close()
+	az, el, live, err := c.Heading()
+	if err != nil {
+		return "", err
+	}
+	if !live {
+		return "The controller accepted the command but does not report its position — normal for many controllers. It will still be driven.", nil
+	}
+	return fmt.Sprintf("The rotator is at %.1f° azimuth, %.1f° elevation.", az, el), nil
+}
+
+// GetSatelliteTracking reports what the tracker is doing.
+func (a *App) GetSatelliteTracking() SatTrackStatus {
+	a.satTrackMu.Lock()
+	t := a.satTrack
+	a.satTrackMu.Unlock()
+	if t == nil {
+		return SatTrackStatus{}
+	}
+	t.mu.Lock()
+	defer t.mu.Unlock()
+	return t.status
+}
+
+// satTrackedNominal is the nominal downlink the tracker is currently working
+// from, or 0 when it is not tracking this satellite and transponder.
+func (a *App) satTrackedNominal(name string, transponder int) int64 {
+	a.satTrackMu.Lock()
+	t := a.satTrack
+	a.satTrackMu.Unlock()
+	if t == nil || t.tp != transponder || !strings.EqualFold(t.name, name) {
+		return 0
+	}
+	t.mu.Lock()
+	defer t.mu.Unlock()
+	return t.nominalDown
+}
+
+func (a *App) emitSatTrack(s SatTrackStatus) {
+	if a.ctx != nil {
+		wruntime.EventsEmit(a.ctx, "sat:track", s)
+	}
+}
+
+func (a *App) satTrackLoop(t *satTracker) {
+	defer close(t.done)
+	defer t.releaseRotator()
+	tick := time.NewTicker(satTickEvery)
+	defer tick.Stop()
+	for {
+		a.satTrackStep(t)
+		select {
+		case <-t.stop:
+			return
+		case <-tick.C:
+		}
+	}
+}
+
+// satTrackStep is one pass of the loop: read the dial, work out the pair, send
+// what changed.
+func (a *App) satTrackStep(t *satTracker) {
+	_, birds, _ := a.satParts()
+	b, ok := birds.Find(t.name)
+	if !ok || t.tp >= len(b.Transponders) {
+		return
+	}
+	tp := b.Transponders[t.tp]
+
+	t.mu.Lock()
+	nominal := t.nominalDown
+	lastDown, lastUp := t.lastDown, t.lastUp
+	t.mu.Unlock()
+
+	// Where the satellite is, and how fast it is running away. A geostationary
+	// bird is neither: its range rate is zero, so the zero position below gives
+	// a zero shift without a special case, and asking for a look angle we do not
+	// need would only fail on a station with no locator.
+	var pos sat.Position
+	visible := true
+	if !b.Geostationary {
+		obs, err := a.satObserver()
+		if err != nil {
+			t.setError(err.Error())
+			return
+		}
+		real, ok := a.satResolve(t.name)
+		if !ok {
+			t.setError(fmt.Sprintf("%s is not in the element set", t.name))
+			return
+		}
+		store, _, _ := a.satParts()
+		p, err := store.Track(real, obs, time.Now().UTC())
+		if err != nil {
+			t.setError(err.Error())
+			return
+		}
+		pos = p
+		visible = p.Visible()
+	}
+	// The fractional shift, positive when the satellite is approaching. Only the
+	// dial arithmetic below needs it as a number; the pair itself comes from
+	// sat.Doppler, so there is exactly one place where the sign of a correction
+	// is decided.
+	factor := -pos.RangeRate / satLightKmS
+
+	// Where did the operator leave the receiver? If it is not where the tracker
+	// put it, they have moved to another station and that is the new nominal.
+	if lastDown > 0 && tp.Linear() {
+		if actual, err := a.satReceiveHz(); err == nil && actual > 0 {
+			if abs64i(actual-lastDown) > satDialTolerance {
+				moved := satNominalFromDial(actual, factor)
+				if moved >= tp.DownLo && moved <= tp.DownHi {
+					nominal = moved
+					t.mu.Lock()
+					t.nominalDown = moved
+					t.mu.Unlock()
+				}
+			}
+		}
+	}
+
+	nomUp := tp.UplinkFor(nominal)
+	sh := sat.Doppler(pos, nominal, nomUp)
+	down, up := sh.DownHz, sh.UpHz
+
+	t.mu.Lock()
+	t.status = SatTrackStatus{
+		On: true, Name: b.Name, Transponder: tp.Label, Mode: tp.Mode,
+		NominalDown: nominal, NominalUp: nomUp,
+		DownHz: down, UpHz: up,
+		Az: pos.Az, El: pos.El, Visible: visible,
+		Radio: t.status.Radio, Error: t.status.Error,
+	}
+	t.mu.Unlock()
+
+	t.pointRotator(pos, b.Geostationary)
+	t.readRotator()
+
+	t.mu.Lock()
+	st := t.status
+	t.mu.Unlock()
+	a.emitSatTrack(st)
+
+	// Only send what has actually moved. The step is the smallest change worth a
+	// command: on SSB a listener hears twenty hertz, on an FM channel nothing
+	// under a couple of hundred matters at all.
+	step := int64(20)
+	if strings.EqualFold(tp.Mode, "FM") {
+		step = 200
+	}
+	if abs64i(down-lastDown) < step && abs64i(up-lastUp) < step {
+		return
+	}
+
+	mode := tp.Mode
+	if lastDown != 0 {
+		mode = "" // set once, at the start of the pass — see satMode/satSetMode
+	}
+	err := a.satTune(down, up, mode, mode)
+	t.mu.Lock()
+	if err == nil {
+		t.lastDown, t.lastUp, t.fails = down, up, 0
+		t.status.Error = ""
+	} else {
+		t.fails++
+		t.status.Error = err.Error()
+	}
+	fails := t.fails
+	t.mu.Unlock()
+	if err != nil && (fails == 1 || fails%30 == 0) {
+		// Once, then once every half minute: a radio that has gone away must be
+		// visible in the log without filling it.
+		applog.Printf("sat: tuning %s failed (%d in a row): %v", t.name, fails, err)
+	}
+}
+
+// satNominalFromDial turns a frequency the operator tuned to into the nominal
+// one it corresponds to.
+//
+// The inverse of the downlink correction: what comes out of the transponder at
+// nominal arrives at heard = nominal × (1 + f). Doing this is what lets the
+// operator hunt across a linear passband without the tracker dragging them back
+// — where they land becomes the new truth, and the uplink follows it.
+func satNominalFromDial(heardHz int64, factor float64) int64 {
+	if heardHz <= 0 || factor <= -1 {
+		return heardHz
+	}
+	return int64(math.Round(float64(heardHz) / (1 + factor)))
+}
+
+// pointRotator keeps the antenna on the satellite.
+//
+// Below the configured elevation the rotator is left alone. Not because the
+// numbers stop being right — they are right all the way round the orbit — but
+// because a rotator that chases a satellite through the far side of the earth
+// spends the whole night turning, and a mast is a mechanical thing with a
+// finite number of turns in it.
+func (t *satTracker) pointRotator(pos sat.Position, geostationary bool) {
+	if t.rot == nil {
+		return
+	}
+	if !geostationary && pos.El < t.rotMinE {
+		return
+	}
+	// A step below the beamwidth is a command for nothing. Compared against what
+	// was last COMMANDED rather than where the rotator says it is: a rotator in
+	// motion is always somewhere between the two, and comparing against that
+	// would order a fresh move on every tick of a slew.
+	az, el := pos.Az, pos.El
+	if geostationary {
+		// A satellite that does not move needs pointing once. Its own az/el were
+		// not computed (there is nothing to compute), so leave the rotator where
+		// the operator put it.
+		if t.rotSent {
+			return
+		}
+	}
+	if t.rotSent && math.Abs(az-t.rotAz) < t.rotStep && math.Abs(el-t.rotEl) < t.rotStep {
+		return
+	}
+	if err := t.rot.Point(az, el); err != nil {
+		t.setError(err.Error())
+		return
+	}
+	t.rotAz, t.rotEl, t.rotSent = az, el, true
+}
+
+// readRotator asks the controller where it actually is, for the display.
+//
+// Separate from the pointing, and it runs on every tick rather than only when a
+// command was sent: watching the antenna crawl towards the bearing is how an
+// operator sees a rotator that is slow, stalled, or turning the wrong way. A
+// controller that does not answer says so once and is not asked again.
+func (t *satTracker) readRotator() {
+	if t.rot == nil {
+		return
+	}
+	// Not on every tick. A PstRotator query binds a socket and waits up to a
+	// second and a half for an answer, and a held serial port still costs a
+	// round trip; three seconds is often enough to watch an antenna slew and
+	// rare enough not to sit in the way of the tuning.
+	if time.Since(t.rotReadAt) < 3*time.Second {
+		return
+	}
+	t.rotReadAt = time.Now()
+	az, el, live, err := t.rot.Heading()
+	t.mu.Lock()
+	defer t.mu.Unlock()
+	if err != nil {
+		t.status.RotOn = true
+		return
+	}
+	t.status.RotOn, t.status.RotAz, t.status.RotEl, t.status.RotLive = true, az, el, live
+}
+
+// releaseRotator hands the mast back at the end of a pass.
+func (t *satTracker) releaseRotator() {
+	if t.rot == nil {
+		return
+	}
+	if t.rotPark && t.rotSent {
+		// Elevation down first and azimuth to north: a dish or a pair of yagis
+		// left pointing at the sky is what a gale takes away.
+		if err := t.rot.Point(0, 0); err != nil {
+			applog.Printf("sat: could not park the rotator: %v", err)
+		}
+	}
+	t.rot.Close()
+	t.rot = nil
+}
+
+func (t *satTracker) setError(msg string) {
+	t.mu.Lock()
+	t.status.Error = msg
+	t.mu.Unlock()
+}
+
+// satTune sends the pair to whichever radio is connected.
+func (a *App) satTune(downHz, upHz int64, downMode, upMode string) error {
+	if a.cat == nil {
+		return fmt.Errorf("CAT is not running")
+	}
+	if a.cat.SatCapable() {
+		return a.cat.SatDo(func(st cat.SatTuner) error {
+			return st.TuneSatellite(downHz, upHz, downMode, upMode)
+		})
+	}
+	// No satellite pair on this backend: the downlink is what it can do, and the
+	// operator was told so when tracking started (Radio = "downlink-only").
+	if err := a.cat.SetFrequency(downHz); err != nil {
+		return err
+	}
+	if downMode != "" {
+		return a.cat.SetMode(downMode)
+	}
+	return nil
+}
+
+// satReceiveHz is where the receiver is, asked of the backend that knows.
+func (a *App) satReceiveHz() (int64, error) {
+	if a.cat == nil {
+		return 0, fmt.Errorf("CAT is not running")
+	}
+	if a.cat.SatCapable() {
+		var hz int64
+		err := a.cat.SatDo(func(st cat.SatTuner) error {
+			v, e := st.SatReceiveHz()
+			hz = v
+			return e
+		})
+		return hz, err
+	}
+	st := a.cat.State()
+	if st.RxFreqHz > 0 {
+		return st.RxFreqHz, nil
+	}
+	return st.FreqHz, nil
+}
+
+func abs64i(v int64) int64 {
+	if v < 0 {
+		return -v
+	}
+	return v
+}
+
+// ── What goes in the log ────────────────────────────────────────────────────
+
+// applySatellite stamps a QSO made through a satellite.
+//
+// The NOMINAL frequencies are logged, never the Doppler-corrected ones. Two
+// stations working each other through a transponder read different numbers off
+// their dials at the same instant — that is what Doppler means — and the only
+// figure they can both agree on, and the only one that means anything to
+// somebody reading the log later, is the transponder's own. LoTW matches on the
+// band, so nothing is lost; a log full of 435.847 231 would simply be a record
+// of where one radio happened to be.
+func (a *App) applySatellite(q *qso.QSO) {
+	a.satTrackMu.Lock()
+	t := a.satTrack
+	a.satTrackMu.Unlock()
+	if t == nil {
+		return
+	}
+	t.mu.Lock()
+	name, down, up := t.status.Name, t.status.NominalDown, t.status.NominalUp
+	az, el := t.status.Az, t.status.El
+	t.mu.Unlock()
+	if name == "" || down <= 0 {
+		return
+	}
+	// Nothing the operator filled in is overwritten. A QSO edited by hand, or
+	// imported, or logged from a second radio while the tracker happened to be
+	// running, keeps what it was given.
+	if strings.TrimSpace(q.PropMode) == "" {
+		q.PropMode = "SAT"
+	}
+	if q.PropMode != "SAT" {
+		return // they said it was something else — meteor scatter, EME
+	}
+	if strings.TrimSpace(q.SatName) == "" {
+		q.SatName = name
+	}
+	if strings.TrimSpace(q.SatMode) == "" {
+		q.SatMode = satModeLetters(up, down)
+	}
+	// The transmit frequency is the uplink and the receive frequency the
+	// downlink — which is the one place a satellite QSO differs from every other
+	// kind, and the reason FREQ alone cannot describe one.
+	if up > 0 {
+		q.FreqHz = &up
+		if b := bandForHz(up); b != "" {
+			q.Band = b
+		}
+	}
+	d := down
+	q.FreqRXHz = &d
+	if b := bandForHz(down); b != "" {
+		q.BandRX = b
+	}
+	if q.AntAz == nil && (az != 0 || el != 0) {
+		v := az
+		q.AntAz = &v
+	}
+	if q.AntEl == nil && el != 0 {
+		v := el
+		q.AntEl = &v
+	}
+}
+
+// satModeLetters is the ADIF SAT_MODE: the uplink band's letter, then the
+// downlink's — "U/V" for 435 up, 145 down. The letters are AMSAT's, and they
+// are what every satellite operator writes on a QSL card.
+func satModeLetters(upHz, downHz int64) string {
+	u, d := satBandLetter(upHz), satBandLetter(downHz)
+	if u == "" || d == "" {
+		return ""
+	}
+	return u + "/" + d
+}
+
+func satBandLetter(hz int64) string {
+	switch {
+	case hz <= 0:
+		return ""
+	case hz < 30_000_000:
+		return "A" // 10 m — mode A's downlink
+	case hz < 148_000_000:
+		return "V" // 2 m
+	case hz < 450_000_000:
+		return "U" // 70 cm
+	case hz < 1_300_000_000:
+		return "L" // 23 cm
+	case hz < 2_500_000_000:
+		return "S" // 13 cm
+	case hz < 6_000_000_000:
+		return "C" // 6 cm
+	case hz < 11_000_000_000:
+		return "X" // 3 cm
+	}
+	return "K" // 24 GHz and above
+}

app_sat_track_test.go

@@ -0,0 +1,47 @@
+package main
+
+import (
+	"testing"
+
+	"hamlog/internal/sat"
+)
+
+// The dial arithmetic has to be the exact inverse of the correction, or every
+// touch of the knob would nudge the nominal frequency a little further off and
+// the uplink would walk across the passband over a pass.
+func TestSatNominalFromDialRoundTrip(t *testing.T) {
+	// A range of range rates: hard approach, drifting, hard recession. ±8 km/s
+	// covers a low orbit overhead.
+	for _, rate := range []float64{-8, -3.2, -0.4, 0, 0.4, 3.2, 8} {
+		p := sat.Position{RangeRate: rate}
+		for _, nominal := range []int64{29_450_000, 145_900_000, 435_850_000, 10_489_675_000} {
+			sh := sat.Doppler(p, nominal, 0)
+			factor := -rate / satLightKmS
+			got := satNominalFromDial(sh.DownHz, factor)
+			if diff := got - nominal; diff > 1 || diff < -1 {
+				t.Errorf("rate %.1f km/s, %d Hz: heard %d, came back as %d (%+d)",
+					rate, nominal, sh.DownHz, got, diff)
+			}
+		}
+	}
+}
+
+// SAT_MODE is what goes on a QSL card, and the letters are the uplink's then
+// the downlink's — the order operators write and the order ADIF wants.
+func TestSatModeLetters(t *testing.T) {
+	for _, tc := range []struct {
+		name     string
+		up, down int64
+		want     string
+	}{
+		{"FO-29: 2 m up, 70 cm down", 145_950_000, 435_850_000, "V/U"},
+		{"AO-91: 70 cm up, 2 m down", 435_250_000, 145_960_000, "U/V"},
+		{"AO-7 mode A: 2 m up, 10 m down", 145_900_000, 29_450_000, "V/A"},
+		{"QO-100: 13 cm up, 3 cm down", 2_400_175_000, 10_489_675_000, "S/X"},
+		{"receive only", 0, 145_800_000, ""},
+	} {
+		if got := satModeLetters(tc.up, tc.down); got != tc.want {
+			t.Errorf("%s: got %q, wanted %q", tc.name, got, tc.want)
+		}
+	}
+}

app_udp_focus.go

@@ -0,0 +1,108 @@
+package main
+
+// Which decoder the entry field belongs to, when several are running.
+//
+// A station running WSJT-X, JTDX and MSHV at once has three programs sending
+// Status once a second each. Click a call in one of them and only that one has
+// a DX Call; the other two are idle and say so. Both statements are true, and
+// both arrive — so the entry field is filled by the program the operator is
+// working and emptied by the two that are not, once a second, and the map
+// zooms in and out with it.
+//
+// So the first program to announce a station is FOCUSED, and until it lets go
+// the others cannot touch the entry field. That is the operator's own answer:
+// "if I call on one program, keep that one's UDP for the duration of the QSO".
+//
+// Focus is released when the focused program clears its own DX Call, when it
+// stops sending altogether (it was closed), or when a QSO is logged — never on
+// a timer that could hand the field to another program mid-over.
+
+import (
+	"strings"
+	"sync"
+	"time"
+
+	"hamlog/internal/applog"
+)
+
+// udpFocusIdle is how long a focused program may go silent before the focus is
+// given up.
+//
+// Generous on purpose: a decoder sends Status every second, so anything above a
+// few seconds means it has been closed or has lost its network. Thirty is long
+// enough to survive a machine that stutters and short enough that a program
+// closed mid-QSO does not lock the entry field for the rest of the evening.
+const udpFocusIdle = 30 * time.Second
+
+type udpFocus struct {
+	mu   sync.Mutex
+	inst string
+	at   time.Time
+	// told marks that the log already carries the line explaining why another
+	// program's callsign is being ignored. Once per focus, not once a second.
+	told map[string]bool
+}
+
+// claim records that inst is announcing a station, and reports whether inst is
+// the program the entry field currently belongs to.
+func (f *udpFocus) claim(inst string) bool {
+	if inst == "" {
+		return true // a sender with no id: nothing to arbitrate between
+	}
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	if f.inst == "" || f.inst == inst || time.Since(f.at) > udpFocusIdle {
+		if f.inst != inst {
+			applog.Printf("udp: the entry field follows %s while it is calling", inst)
+			f.told = nil
+		}
+		f.inst, f.at = inst, time.Now()
+		return true
+	}
+	return false
+}
+
+// holds reports whether inst may act on the entry field, without claiming it.
+// Used for the clear: a program that is not focused clearing its own DX Call
+// says nothing about the QSO in progress somewhere else.
+func (f *udpFocus) holds(inst string) bool {
+	if inst == "" {
+		return true
+	}
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	if f.inst == "" || time.Since(f.at) > udpFocusIdle {
+		return true
+	}
+	return f.inst == inst
+}
+
+// release gives the field up — the focused program cleared its call, or a QSO
+// was logged and the next station may come from anywhere.
+func (f *udpFocus) release(why string) {
+	f.mu.Lock()
+	had := f.inst
+	f.inst, f.at, f.told = "", time.Time{}, nil
+	f.mu.Unlock()
+	if had != "" {
+		applog.Printf("udp: the entry field is free again (%s let go: %s)", had, why)
+	}
+}
+
+// noteIgnored logs, once per focused program, that another one's callsign was
+// not applied. Without it the behaviour is invisible: an operator whose second
+// decoder "stopped filling the call" has nothing to read.
+func (f *udpFocus) noteIgnored(inst, call string) {
+	f.mu.Lock()
+	if f.told == nil {
+		f.told = map[string]bool{}
+	}
+	first := !f.told[inst]
+	f.told[inst] = true
+	holder := f.inst
+	f.mu.Unlock()
+	if first {
+		applog.Printf("udp: [%s] %q not applied — %s has the entry field while it is calling",
+			inst, strings.ToUpper(call), holder)
+	}
+}

app_udp_focus_test.go

@@ -0,0 +1,76 @@
+package main
+
+import (
+	"testing"
+	"time"
+)
+
+// The reported failure, in order: MSHV is called on, WSJT-X and JTDX sit idle
+// beside it, and every one of their Status packets used to empty the entry
+// field that MSHV had just filled — once a second, with the map zooming in and
+// out to match.
+func TestUdpFocusKeepsTheFieldWithTheCallingProgram(t *testing.T) {
+	var f udpFocus
+
+	if !f.claim("MSHV") {
+		t.Fatal("the first program to announce a station must take the field")
+	}
+	// The other two, announcing stations of their own, are refused.
+	if f.claim("WSJT-X") {
+		t.Error("WSJT-X took the field while MSHV was calling")
+	}
+	if f.claim("JTDX") {
+		t.Error("JTDX took the field while MSHV was calling")
+	}
+	// And their clears do not empty it — this is the half that caused the flicker.
+	if f.holds("WSJT-X") {
+		t.Error("an idle WSJT-X was allowed to clear MSHV's callsign")
+	}
+	if !f.holds("MSHV") {
+		t.Error("MSHV lost the right to clear its own callsign")
+	}
+	// MSHV moving to the next station keeps the field.
+	if !f.claim("MSHV") {
+		t.Error("the focused program must keep the field across stations")
+	}
+}
+
+// Letting go, three ways.
+func TestUdpFocusRelease(t *testing.T) {
+	var f udpFocus
+
+	// The focused program clears its own call.
+	f.claim("MSHV")
+	f.release("DX Call cleared")
+	if !f.claim("WSJT-X") {
+		t.Error("after a release the next program should be able to take the field")
+	}
+
+	// A QSO is logged.
+	f.release("QSO logged")
+	if !f.claim("JTDX") {
+		t.Error("logging a QSO must free the field for whichever program hears the next station")
+	}
+
+	// The focused program is closed and stops sending. Its hold lapses rather
+	// than locking the entry field for the rest of the evening.
+	f.mu.Lock()
+	f.at = time.Now().Add(-udpFocusIdle - time.Second)
+	f.mu.Unlock()
+	if !f.claim("MSHV") {
+		t.Error("a silent program must not hold the field for ever")
+	}
+}
+
+// A sender with no program id — an ADIF relay, a remote "set call" — is not
+// something to arbitrate between, and must never be locked out.
+func TestUdpFocusIgnoresUnnamedSenders(t *testing.T) {
+	var f udpFocus
+	f.claim("MSHV")
+	if !f.claim("") {
+		t.Error("an unnamed sender was refused the entry field")
+	}
+	if !f.holds("") {
+		t.Error("an unnamed sender was refused a clear")
+	}
+}

app_watchlist.go

@@ -42,6 +42,62 @@ func (a *App) SetWatchlistContestPattern(p string) {
 	a.setSettingGlobal(keyWatchlistContestPattern, p)
 }
 
+// The named contest callsigns: the other half of the auto-add, and the half the
+// pattern cannot express.
+//
+// A special-event fleet is usually a common string in the callsign — WWA in
+// TM29WWA, HB9WWA, F4WWA/P — and the pattern collects those on sight. But an
+// entry list is not a naming convention: R7W can be part of the same event and
+// share nothing with it, and no pattern will ever catch that station without
+// catching half the band with it. So the two work together: the pattern for the
+// family, this list for everybody else.
+//
+// Stored GLOBALLY, like the pattern and the list itself — an event is worth
+// hunting whichever station profile is on.
+func (a *App) GetWatchlistContestCalls() string {
+	return a.settingOr(keyWatchlistContestCalls, "")
+}
+
+// SetWatchlistContestCalls stores the list as typed and caches the parsed set.
+//
+// The RAW text is what is stored: the operator's line breaks and their order
+// are how the list is read back a week later, and rewriting it into a
+// normalised single line loses the only structure it has.
+func (a *App) SetWatchlistContestCalls(list string) {
+	a.setSettingGlobal(keyWatchlistContestCalls, list)
+	a.watchCalls.Store(parseContestCalls(list))
+	applog.Printf("watchlist: %d named contest callsigns", len(parseContestCalls(list)))
+}
+
+// parseContestCalls splits the box into a set. One per line is what is asked
+// for, and commas, semicolons and spaces are accepted too: a list pasted from
+// an announcement arrives in whatever shape the announcement used.
+func parseContestCalls(list string) map[string]struct{} {
+	out := map[string]struct{}{}
+	for _, tok := range strings.FieldsFunc(strings.ToUpper(list), func(r rune) bool {
+		return r == ',' || r == ';' || r == ' ' || r == '\t' || r == '\n' || r == '\r'
+	}) {
+		if tok = strings.TrimSpace(tok); tok != "" {
+			out[tok] = struct{}{}
+		}
+	}
+	return out
+}
+
+// isNamedContestCall answers the hot path from the cached set.
+func (a *App) isNamedContestCall(call string) bool {
+	v := a.watchCalls.Load()
+	if v == nil {
+		return false
+	}
+	set, ok := v.(map[string]struct{})
+	if !ok {
+		return false
+	}
+	_, found := set[strings.ToUpper(strings.TrimSpace(call))]
+	return found
+}
+
 // WatchlistEntries returns the list for the tab.
 func (a *App) WatchlistEntries() []watchlist.Entry {
 	if a.watchlist == nil {
@@ -210,12 +266,20 @@ func (a *App) watchSpot(dxCall, band, mode, country, comment string, freqHz int6
 	}
 	entry, notify, ok := a.watchlist.MarkSeen(dxCall)
 	if !ok {
-		// Not watched yet — the auto-contest pattern may claim it. Contains, not
-		// prefix: the event string sits anywhere in these calls (HB9WWA, F4WWA/P).
-		if p := a.GetWatchlistContestPattern(); p != "" &&
-			strings.Contains(strings.ToUpper(dxCall), p) {
+		// Not watched yet — the contest pattern or the named list may claim it.
+		// Contains, not prefix, for the pattern: the event string sits anywhere
+		// in those calls (HB9WWA, F4WWA/P). The named list is exact, and is what
+		// catches the entries whose callsign says nothing about the event.
+		p := a.GetWatchlistContestPattern()
+		byPattern := p != "" && strings.Contains(strings.ToUpper(dxCall), p)
+		byName := a.isNamedContestCall(dxCall)
+		if byPattern || byName {
 			if err := a.watchlist.Add(dxCall, true); err == nil {
-				applog.Printf("watchlist: auto-added %s (contest pattern %q)", dxCall, p)
+				why := fmt.Sprintf("contest pattern %q", p)
+				if byName {
+					why = "named in the contest list"
+				}
+				applog.Printf("watchlist: auto-added %s (%s)", dxCall, why)
 				entry, notify, ok = a.watchlist.MarkSeen(dxCall)
 				if a.ctx != nil {
 					wruntime.EventsEmit(a.ctx, "watchlist:changed")

app_wsjt_highlight.go

@@ -7,6 +7,8 @@ package main
 // the spot grid, so the two windows can never disagree.
 
 import (
+	"fmt"
+	"strconv"
 	"strings"
 
 	"hamlog/internal/applog"
@@ -17,6 +19,14 @@ import (
 const (
 	keyWsjtHighlight  = "udp.wsjt.highlight"
 	keyWsjtFollowMode = "udp.wsjt.followmode" // spot clicks switch the decoder's mode
+	keyWsjtHLWorked   = "udp.wsjt.highlight_worked"
+	// One key per verdict, holding "#RRGGBB". Only the BACKGROUND is stored: the
+	// text colour is computed from it, so a chosen colour can never come out
+	// unreadable in somebody else's window.
+	keyWsjtColWatchlist = "udp.wsjt.colour.watchlist"
+	keyWsjtColNewDXCC   = "udp.wsjt.colour.new_dxcc"
+	keyWsjtColNewBand   = "udp.wsjt.colour.new_band"
+	keyWsjtColWorked    = "udp.wsjt.colour.worked"
 )
 
 // wsjtModes are the modes a Configure message can meaningfully ask for — the
@@ -52,16 +62,136 @@ func (a *App) ConfigureDecoderMode(mode string) {
 	a.udp.SendConfigureMode(mode)
 }
 
-// The palette. Fixed colours, not theme tokens — they are painted into another
-// application's window, which has no idea what theme OpsLog wears.
+// The DEFAULT palette. Fixed colours, not theme tokens — they are painted into
+// another application's window, which has no idea what theme OpsLog wears, and
+// the operator can change each of them (see WsjtHighlightColours).
 var (
 	hlWatchlist = udp.RGB{R: 244, G: 114, B: 182} // the watchlist pink
 	hlNewDXCC   = udp.RGB{R: 22, G: 130, B: 60}   // green
 	hlNewBand   = udp.RGB{R: 226, G: 122, B: 24}  // orange
 	hlWhite     = udp.RGB{R: 255, G: 255, B: 255}
 	hlBlack     = udp.RGB{R: 20, G: 20, B: 20}
+	// Worked already, on this band and in this mode. Grey on purpose, and the
+	// only DIM colour of the four: the others say "look at this", and this one
+	// says the opposite — it has to recede, not compete with them.
+	hlWorked = udp.RGB{R: 75, G: 85, B: 99}
 )
 
+// WsjtHighlightColours is the operator's palette, one background per verdict.
+type WsjtHighlightColours struct {
+	Watchlist string `json:"watchlist"`
+	NewDXCC   string `json:"new_dxcc"`
+	NewBand   string `json:"new_band"`
+	Worked    string `json:"worked"`
+}
+
+// GetWsjtHighlightColours returns the palette in "#RRGGBB", defaults included.
+func (a *App) GetWsjtHighlightColours() WsjtHighlightColours {
+	return WsjtHighlightColours{
+		Watchlist: a.settingOr(keyWsjtColWatchlist, hexOfRGB(hlWatchlist)),
+		NewDXCC:   a.settingOr(keyWsjtColNewDXCC, hexOfRGB(hlNewDXCC)),
+		NewBand:   a.settingOr(keyWsjtColNewBand, hexOfRGB(hlNewBand)),
+		Worked:    a.settingOr(keyWsjtColWorked, hexOfRGB(hlWorked)),
+	}
+}
+
+// SetWsjtHighlightColours stores the palette and repaints.
+//
+// The repaint is the whole point of clearing: the de-duplication remembers what
+// it has already told each decoder, so without this a callsign keeps yesterday's
+// colour until it changes verdict — and the operator, having just picked a new
+// one, sees nothing happen.
+func (a *App) SetWsjtHighlightColours(c WsjtHighlightColours) {
+	set := func(key, v, def string) {
+		if _, ok := parseHexRGB(v); !ok {
+			v = def
+		}
+		a.setSetting(key, strings.ToUpper(strings.TrimSpace(v)))
+	}
+	set(keyWsjtColWatchlist, c.Watchlist, hexOfRGB(hlWatchlist))
+	set(keyWsjtColNewDXCC, c.NewDXCC, hexOfRGB(hlNewDXCC))
+	set(keyWsjtColNewBand, c.NewBand, hexOfRGB(hlNewBand))
+	set(keyWsjtColWorked, c.Worked, hexOfRGB(hlWorked))
+	a.clearWsjtHighlights()
+	applog.Printf("wsjt highlight: palette changed — repainting")
+}
+
+// colourFor reads one verdict's background and picks a legible foreground.
+//
+// The text colour is DERIVED, never stored: an operator choosing a dark blue
+// would otherwise get black text on it in somebody else's window and conclude
+// the feature is broken. Rec. 601 luma, the same rule a browser's contrast
+// checker uses, with the threshold where black stops being readable.
+func (a *App) colourFor(key, def string) (udp.RGB, udp.RGB) {
+	bg, ok := parseHexRGB(a.settingOr(key, def))
+	if !ok {
+		bg, _ = parseHexRGB(def)
+	}
+	luma := (299*int(bg.R) + 587*int(bg.G) + 114*int(bg.B)) / 1000
+	if luma < 140 {
+		return bg, hlWhite
+	}
+	return bg, hlBlack
+}
+
+func hexOfRGB(c udp.RGB) string { return fmt.Sprintf("#%02X%02X%02X", c.R, c.G, c.B) }
+
+// parseHexRGB reads "#RRGGBB" (or "RRGGBB"). Anything else is refused rather
+// than half-read: a colour that silently becomes black is worse than a default.
+func parseHexRGB(s string) (udp.RGB, bool) {
+	s = strings.TrimPrefix(strings.TrimSpace(s), "#")
+	if len(s) != 6 {
+		return udp.RGB{}, false
+	}
+	v, err := strconv.ParseUint(s, 16, 32)
+	if err != nil {
+		return udp.RGB{}, false
+	}
+	return udp.RGB{R: byte(v >> 16), G: byte(v >> 8), B: byte(v)}, true
+}
+
+// GetWsjtHighlightWorked reports whether stations already worked on this band
+// and mode are greyed out as well.
+//
+// Its own switch, and off by default. The other three verdicts pick out a
+// handful of decodes in a period; this one can match most of them on a
+// well-filled log, and a screen where nearly every line is coloured has stopped
+// saying anything. It is worth having only for an operator who wants the dupes
+// struck out rather than the catches picked out.
+func (a *App) GetWsjtHighlightWorked() bool {
+	return a.settingOr(keyWsjtHLWorked, "0") == "1"
+}
+
+// SetWsjtHighlightWorked flips it, and repaints.
+//
+// Turning it OFF has to clear what it painted: those callsigns keep their grey
+// in the decoder's window otherwise, and nothing would ever say another word
+// about them — the de-duplication remembers that they were already told.
+func (a *App) SetWsjtHighlightWorked(on bool) {
+	v := "0"
+	if on {
+		v = "1"
+	}
+	a.setSetting(keyWsjtHLWorked, v)
+	a.wsjtHLWorkedOn.Store(on)
+	a.clearWsjtHighlights()
+	applog.Printf("wsjt highlight: worked stations %v", on)
+}
+
+// clearWsjtHighlights wipes every instruction OpsLog installed, in every
+// running decoder, and forgets what it had said.
+func (a *App) clearWsjtHighlights() {
+	if a.udp == nil {
+		return
+	}
+	for _, inst := range a.udp.Instances() {
+		_ = a.udp.SendClearHighlights(inst)
+	}
+	a.wsjtHLMu.Lock()
+	a.wsjtHLSent = map[string]string{}
+	a.wsjtHLMu.Unlock()
+}
+
 // GetWsjtHighlight reports whether decode highlighting is on.
 func (a *App) GetWsjtHighlight() bool {
 	return a.settingOr(keyWsjtHighlight, "0") == "1"
@@ -77,13 +207,8 @@ func (a *App) SetWsjtHighlight(on bool) {
 	}
 	a.setSetting(keyWsjtHighlight, v)
 	a.wsjtHighlightOn.Store(on)
-	if !on && a.udp != nil {
-		for _, inst := range a.udp.Instances() {
-			_ = a.udp.SendClearHighlights(inst)
-		}
-		a.wsjtHLMu.Lock()
-		a.wsjtHLSent = map[string]string{}
-		a.wsjtHLMu.Unlock()
+	if !on {
+		a.clearWsjtHighlights()
 		applog.Printf("wsjt highlight: off — cleared in every instance")
 	}
 }
@@ -92,12 +217,14 @@ func (a *App) SetWsjtHighlight(on bool) {
 // it, when the option is on and the verdict is worth a colour. De-duplicated
 // per instance+call+verdict: a station CQing all evening is decoded four times
 // a minute, and the instruction only needs to be said once.
-func (a *App) maybeHighlightDecode(instance, call, band string) {
+func (a *App) maybeHighlightDecode(instance, call, band, mode string) {
 	if !a.wsjtHighlightOn.Load() || a.udp == nil || call == "" || instance == "" {
 		return
 	}
-	bg, fg, verdict := a.decodeHighlightVerdict(call, band)
-	key := instance + "|" + strings.ToUpper(call) + "|" + band
+	bg, fg, verdict := a.decodeHighlightVerdict(call, band, mode)
+	// The MODE is part of the key: one receiver can be handed FT8 and FT4 in
+	// the same session, and the verdict on a callsign is not the same in both.
+	key := instance + "|" + strings.ToUpper(call) + "|" + band + "|" + strings.ToUpper(mode)
 	a.wsjtHLMu.Lock()
 	if a.wsjtHLSent == nil {
 		a.wsjtHLSent = map[string]string{}
@@ -124,32 +251,57 @@ func (a *App) maybeHighlightDecode(instance, call, band string) {
 }
 
 // decodeHighlightVerdict ranks a callsign: watchlist beats new-DXCC beats
-// new-band; anything else is "no colour". The empty verdict doubles as the
-// clear signal in maybeHighlightDecode.
-func (a *App) decodeHighlightVerdict(call, band string) (bg, fg *udp.RGB, verdict string) {
-	if a.watchlist != nil {
-		if _, ok := a.watchlist.Match(call); ok {
-			c := hlWatchlist
-			f := hlBlack
-			return &c, &f, "watchlist"
-		}
-	}
+// new-band, and "already worked here" comes last of all — it is the only
+// verdict that says do NOT call, so anything worth calling for outranks it.
+// Anything else is "no colour", and the empty verdict doubles as the clear
+// signal in maybeHighlightDecode.
+func (a *App) decodeHighlightVerdict(call, band, mode string) (bg, fg *udp.RGB, verdict string) {
 	c := a.clusterStatusMaps()
+	// ALREADY WORKED HERE, whatever else the station is.
+	//
+	// Settled first because it is the one fact that cancels the others. A watch
+	// list entry worked on this band and mode stayed pink for the rest of the
+	// session — the list is a statement of intent, not of what is left to do, and
+	// the colour that means "call this one" was being shown for a station already
+	// in the log. From the operator's side there was no way to tell the two
+	// apart, which is the only thing the colours are for.
+	workedHere := false
+	if band != "" && mode != "" && c.workedCallSlots != nil {
+		m := strings.ToUpper(strings.TrimSpace(mode))
+		if c.normMode != nil {
+			m = c.normMode(m)
+		}
+		_, workedHere = c.workedCallSlots[strings.ToUpper(call)+"|"+strings.ToLower(band)+"|"+m]
+	}
+	if a.watchlist != nil && !workedHere {
+		if _, ok := a.watchlist.Match(call); ok {
+			bgc, fgc := a.colourFor(keyWsjtColWatchlist, hexOfRGB(hlWatchlist))
+			return &bgc, &fgc, "watchlist"
+		}
+	}
 	if a.dxcc != nil {
 		if m, ok := a.dxcc.Lookup(call); ok && m.Entity != nil {
 			num := dxcc.EntityDXCC(m.Entity.Name)
 			ent := c.entities[num]
 			if ent == nil {
-				bgc, fgc := hlNewDXCC, hlWhite
+				bgc, fgc := a.colourFor(keyWsjtColNewDXCC, hexOfRGB(hlNewDXCC))
 				return &bgc, &fgc, "new-dxcc"
 			}
 			if band != "" {
 				if _, workedBand := ent.Bands[strings.ToLower(band)]; !workedBand {
-					bgc, fgc := hlNewBand, hlBlack
+					bgc, fgc := a.colourFor(keyWsjtColNewBand, hexOfRGB(hlNewBand))
 					return &bgc, &fgc, "new-band"
 				}
 			}
 		}
 	}
+	// A dupe, judged by the same ledger and the same digital-mode grouping the
+	// cluster uses, so the two windows cannot disagree about what "worked" means.
+	// Its own option: on a well-filled log this matches most of a period, and a
+	// screen where nearly every line is coloured has stopped saying anything.
+	if workedHere && a.wsjtHLWorkedOn.Load() {
+		bgc, fgc := a.colourFor(keyWsjtColWorked, hexOfRGB(hlWorked))
+		return &bgc, &fgc, "worked"
+	}
 	return nil, nil, ""
 }

autocall.go

@@ -0,0 +1,736 @@
+package main
+
+// Auto-call — the wiring around internal/autocall.
+//
+// The DECISION is in that package, alone and tested. This file does the three
+// things it cannot do for itself: cut the decode stream into periods, tell it
+// what the log still needs from each station, and carry out what it decides.
+//
+// It lives in the backend rather than in the panel because it keys a
+// transmitter: it must behave identically whether the FT decodes tab is open,
+// behind another tab, or the window is minimised — and because every rule it
+// applies is then a Go test rather than something only the air can check.
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+	"time"
+
+	wruntime "github.com/wailsapp/wails/v2/pkg/runtime"
+
+	"hamlog/internal/applog"
+	"hamlog/internal/autocall"
+)
+
+const (
+	keyAutoCallOn       = "autocall.enabled"
+	keyAutoCallOnly     = "autocall.only"
+	keyAutoCallAttempts = "autocall.attempts"
+	keyAutoCallWatched  = "autocall.watched_attempts"
+	keyAutoCallMisses   = "autocall.misses"
+	keyAutoCallRounds   = "autocall.max_rounds"
+	// Periods, not minutes — see autocall.Settings.RestPeriods. A new key rather
+	// than a reinterpreted one: the old value was in minutes, and reading "2" as
+	// two periods or as two minutes are eight periods apart.
+	keyAutoCallRest     = "autocall.rest_periods"
+	keyAutoCallOnScreen = "autocall.on_screen_only"
+	keyAutoCallTrace    = "autocall.trace"
+)
+
+// AutoCallSettings is the panel's shape. Durations are in minutes because that
+// is what the operator is asked for.
+type AutoCallSettings struct {
+	Enabled bool   `json:"enabled"`
+	Only    string `json:"only"`
+	// Attempts / WatchedAttempts: how many calls one station gets before it is
+	// released. The larger allowance is for a callsign on the watch list.
+	Attempts        int `json:"attempts"`
+	WatchedAttempts int `json:"watched_attempts"`
+	// Misses: periods in which the station itself transmits, with no decode of
+	// it, before it is given up on.
+	Misses int `json:"misses"`
+	// MaxRounds: how many series of calls one station gets in a session, and
+	// RestPeriods the pause between two of them, counted in the station's own
+	// transmit periods.
+	MaxRounds   int `json:"max_rounds"`
+	RestPeriods int `json:"rest_periods"`
+	// OnScreenOnly: call only what the decodes panel is showing, so its filters
+	// steer the transmitter as well as the eye.
+	OnScreenOnly bool `json:"on_screen_only"`
+	// Trace writes one line per period to the log: what was on the air, why
+	// each station was refused, and what was decided. For diagnosing "it is not
+	// calling anything" — and it is a line every fifteen seconds, so it is off
+	// unless asked for.
+	Trace bool `json:"trace"`
+}
+
+// intOr reads a stored integer, keeping a stored ZERO — which num() cannot,
+// since it treats zero as "nothing set".
+func intOr(v string, def int) int {
+	n, err := strconv.Atoi(strings.TrimSpace(v))
+	if err != nil || n < 0 {
+		return def
+	}
+	return n
+}
+
+func (a *App) GetAutoCallSettings() AutoCallSettings {
+	d := autocall.Defaults()
+	num := func(key string, def int) int {
+		n, err := strconv.Atoi(strings.TrimSpace(a.settingOr(key, "")))
+		if err != nil || n <= 0 {
+			return def
+		}
+		return n
+	}
+	return AutoCallSettings{
+		// Never on from a stored value alone — see startAutoCall.
+		Enabled:         a.settingOr(keyAutoCallOn, "0") == "1",
+		Only:            strings.ToUpper(strings.TrimSpace(a.settingOr(keyAutoCallOnly, ""))),
+		Attempts:        num(keyAutoCallAttempts, d.Attempts),
+		WatchedAttempts: num(keyAutoCallWatched, d.WatchedAttempts),
+		// On by default: the filters are in front of the operator, and a station
+		// they have hidden is one they have said they do not want.
+		OnScreenOnly: a.settingOr(keyAutoCallOnScreen, "1") == "1",
+		Trace:        a.settingOr(keyAutoCallTrace, "0") == "1",
+		Misses:       num(keyAutoCallMisses, d.Misses),
+		MaxRounds:    num(keyAutoCallRounds, d.MaxRounds),
+		// Zero is meaningful (call it again next period), so it is read directly
+		// rather than through num(), which treats zero as "unset".
+		RestPeriods: intOr(a.settingOr(keyAutoCallRest, ""), d.RestPeriods),
+	}
+}
+
+func (a *App) SaveAutoCallSettings(s AutoCallSettings) error {
+	a.setSetting(keyAutoCallOn, map[bool]string{true: "1", false: "0"}[s.Enabled])
+	a.setSetting(keyAutoCallOnly, strings.ToUpper(strings.TrimSpace(s.Only)))
+	a.setSetting(keyAutoCallOnScreen, map[bool]string{true: "1", false: "0"}[s.OnScreenOnly])
+	a.setSetting(keyAutoCallTrace, map[bool]string{true: "1", false: "0"}[s.Trace])
+	for key, v := range map[string]int{
+		keyAutoCallAttempts: s.Attempts, keyAutoCallWatched: s.WatchedAttempts,
+		keyAutoCallMisses: s.Misses, keyAutoCallRounds: s.MaxRounds,
+	} {
+		if v > 0 {
+			a.setSetting(key, strconv.Itoa(v))
+		}
+	}
+	// Stored even at zero, unlike the counters above: no rest at all is a
+	// setting, not an empty field.
+	if s.RestPeriods >= 0 {
+		a.setSetting(keyAutoCallRest, strconv.Itoa(s.RestPeriods))
+	}
+	a.applyAutoCall()
+	applog.Printf("autocall: %v (only=%q, %d/%d calls, %d misses, %d rounds)",
+		s.Enabled, s.Only, s.Attempts, s.WatchedAttempts, s.Misses, s.MaxRounds)
+	return nil
+}
+
+// SetAutoCallOnly is the chase-list field in the decodes toolbar.
+//
+// Its own binding rather than a settings round-trip: the toolbar knows one
+// field, and handing back a whole struct it never read is how a Preferences
+// window left open somewhere quietly reverts a limit that was just changed.
+func (a *App) SetAutoCallOnly(list string) error {
+	s := a.GetAutoCallSettings()
+	s.Only = list
+	return a.SaveAutoCallSettings(s)
+}
+
+// SetAutoCall is the toolbar switch above the decodes.
+func (a *App) SetAutoCall(on bool) error {
+	s := a.GetAutoCallSettings()
+	s.Enabled = on
+	return a.SaveAutoCallSettings(s)
+}
+
+// autoCallEngine returns the engine, built on first use.
+func (a *App) autoCallEngine() *autocall.Engine {
+	a.acMu.Lock()
+	defer a.acMu.Unlock()
+	if a.ac == nil {
+		a.ac = autocall.New(a.autoCallSettings())
+	}
+	return a.ac
+}
+
+func (a *App) autoCallSettings() autocall.Settings {
+	s := a.GetAutoCallSettings()
+	return autocall.Settings{
+		Enabled: s.Enabled, Only: s.Only, OnScreenOnly: s.OnScreenOnly,
+		Attempts: s.Attempts, WatchedAttempts: s.WatchedAttempts,
+		Misses: s.Misses, MaxRounds: s.MaxRounds,
+		RestPeriods: s.RestPeriods,
+	}
+}
+
+// applyAutoCall pushes the settings into the engine, and clears its state when
+// the feature is switched off — an operator turning it off is entitled to have
+// it forget the station it was calling, not resume it half an hour later.
+func (a *App) applyAutoCall() {
+	e := a.autoCallEngine()
+	s := a.autoCallSettings()
+	e.SetSettings(s)
+	if a.GetAutoCallSettings().Trace {
+		e.SetTrace(func(f string, args ...any) { applog.Printf("autocall: "+f, args...) })
+	} else {
+		e.SetTrace(nil)
+	}
+	if !s.Enabled {
+		e.Reset()
+		a.acMu.Lock()
+		a.acPeriod, a.acBuf = nil, nil
+		a.acJudged, a.acDirty = nil, nil
+		a.acMu.Unlock()
+	}
+	a.emitAutoCall()
+}
+
+// ResetAutoCall is the operator's restart after the engine gave up on an
+// explicit target: it clears every verdict, including the grey list.
+func (a *App) ResetAutoCall() {
+	a.autoCallEngine().Reset()
+	a.emitAutoCall()
+}
+
+// HaltAutoCall is the Halt button while a call is in progress.
+//
+// It does NOT clear the engine's state, which is what Halt used to do: that
+// wiped the rests and the rounds along with everything else, so the station the
+// operator had just stopped was eligible again in the same second and the next
+// period called it straight back.
+func (a *App) HaltAutoCall() {
+	call := a.autoCallEngine().Halt()
+	if call != "" {
+		a.acMu.Lock()
+		a.acReason = fmt.Sprintf("%s stopped by the operator — set aside until auto-call is switched off and on", call)
+		a.acMu.Unlock()
+		applog.Printf("autocall: %s", a.acReason)
+	}
+	a.emitAutoCall()
+}
+
+// AutoCallStatus is what the toolbar shows.
+type AutoCallStatus struct {
+	Enabled bool `json:"enabled"`
+	// Only is the chase list, carried in the status so the field in the decodes
+	// toolbar and the one in Preferences are never two versions of the truth:
+	// whichever is typed into, both show it.
+	Only   string `json:"only"`
+	Target string `json:"target"`
+	// Waiting: what it would call if that station were not in a QSO.
+	Waiting string `json:"waiting"`
+	Calls   int    `json:"calls"`
+	Max     int    `json:"max"`
+	Misses  int    `json:"misses"`
+	MaxMiss int    `json:"max_miss"`
+	Stopped bool   `json:"stopped"`
+	// Greylisted counts the stations the operator has stopped this session, so
+	// the toolbar can say why a station on the air is never called.
+	Greylisted int `json:"greylisted"`
+	// Reason is the last decision in plain words. An auto-call that is doing
+	// nothing on purpose looks exactly like one that is broken.
+	Reason string `json:"reason"`
+}
+
+func (a *App) GetAutoCallStatus() AutoCallStatus {
+	st := a.autoCallEngine().Status()
+	a.acMu.Lock()
+	reason := a.acReason
+	a.acMu.Unlock()
+	set := a.GetAutoCallSettings()
+	return AutoCallStatus{
+		Enabled: set.Enabled, Only: set.Only,
+		Target: st.Target, Waiting: st.Waiting, Calls: st.Attempts, Max: st.Max,
+		Misses: st.Misses, MaxMiss: st.MaxMiss, Stopped: st.Stopped,
+		Greylisted: a.autoCallEngine().Greylisted(),
+		Reason:     reason,
+	}
+}
+
+func (a *App) emitAutoCall() {
+	if a.ctx == nil {
+		return
+	}
+	wruntime.EventsEmit(a.ctx, "autocall:status", a.GetAutoCallStatus())
+}
+
+// TakeAutoCallTarget adopts the station the operator has just clicked, so a
+// manual pick gets the same watchdogs as an automatic one — the click is the
+// choice of station, not a decision to call it for ever.
+func (a *App) TakeAutoCallTarget(call, band, mode string) {
+	if !a.GetAutoCallSettings().Enabled {
+		return
+	}
+	call = strings.ToUpper(strings.TrimSpace(call))
+	if call == "" {
+		return
+	}
+	a.autoCallEngine().Take(autocall.Candidate{
+		Decode:  autocall.Decode{Call: call, Band: band, Mode: mode, At: time.Now().UTC(), IsNew: true},
+		Need:    a.autoCallNeed(call, band, mode),
+		Watched: a.autoCallWatched(call),
+	})
+	a.emitAutoCall()
+}
+
+// ── The decode stream, cut into periods ───────────────────────────────────
+
+// acDecode is one decode held until its period is complete.
+type acDecode struct {
+	d  autocall.Decode
+	tx bool // the decode is our own transmission echoed back
+}
+
+// autoCallFeed takes one decode from the UDP loop.
+//
+// Decodes arrive one datagram at a time and a decision needs the whole period:
+// the best station in it, and whether the target was there at all. They are
+// therefore buffered under the period they belong to, and the period is judged
+// when the next one starts — or, if the band goes quiet, by the sweeper below,
+// which is what makes "not decoded for three of its periods" reachable when the
+// answer is that nothing is being decoded at all.
+func (a *App) autoCallFeed(d autocall.Decode) {
+	if !a.GetAutoCallSettings().Enabled {
+		return
+	}
+	inst := d.Instance
+	key := acPeriodKey(d.At, d.TRPeriod)
+	a.acMu.Lock()
+	if a.acPeriod == nil {
+		a.acPeriod, a.acAt, a.acTR, a.acBuf = map[string]string{}, map[string]time.Time{}, map[string]int{}, map[string][]acDecode{}
+		a.acFed = map[string]time.Time{}
+		a.acJudged, a.acDirty = map[string]string{}, map[string]bool{}
+	}
+	if prev := a.acPeriod[inst]; prev != "" && prev != key {
+		prevAt, prevTR, buf := a.acAt[inst], a.acTR[inst], a.acBuf[inst]
+		// Only if something in it has NOT been judged. The buffer now outlives
+		// the judgement (see below), so without this the arrival of the next
+		// period would judge the previous one a second time on the very same
+		// decodes — and act on them, a slot late.
+		pending := a.acDirty[inst] || a.acJudged[inst] != prev
+		a.acPeriod[inst], a.acAt[inst], a.acTR[inst] = key, d.At, d.TRPeriod
+		a.acBuf[inst] = []acDecode{{d: d}}
+		a.acFed[inst], a.acDirty[inst] = time.Now(), true
+		a.acMu.Unlock()
+		// The previous period ends here whatever the sweeper was going to do: a
+		// decode stamped with the next slot is proof the old one is over.
+		if pending {
+			a.autoCallJudge(inst, prev, prevAt, prevTR, buf)
+		}
+		return
+	}
+	// APPENDED, never restarted. The buffer survives the period being judged,
+	// so a decode that arrives after the others belongs to the same period and
+	// is weighed against all of them.
+	//
+	// It used to be dropped and then judged on its own: the sweeper cleared the
+	// buffer, a straggler opened a "new" one under the same key, and the ladder
+	// was applied to whatever handful had come late — with the other thirty
+	// stations of that period nowhere in sight. A deep decode arriving a second
+	// after the burst is exactly the station worth calling.
+	a.acPeriod[inst], a.acAt[inst], a.acTR[inst] = key, d.At, d.TRPeriod
+	a.acFed[inst], a.acDirty[inst] = time.Now(), true
+	a.acBuf[inst] = append(a.acBuf[inst], acDecode{d: d})
+	a.acMu.Unlock()
+}
+
+// acQuiet is how long a period is left open after its LAST decode arrives.
+//
+// This is the whole timing budget of the feature. A decoder finishes a period
+// and sends its decodes about a second before the next slot opens, so the
+// answer has to be back before that boundary — a reply that arrives after it
+// makes the decoder start its call several seconds into the slot, which is what
+// an operator sees as "it calls late" and what a station on the other end sees
+// as a message it cannot decode.
+//
+// It was a whole slot plus four seconds, measured from the DECODE'S OWN
+// TIMESTAMP — the start of the period, not the moment it arrived — so the
+// answer left about four seconds INTO the next slot, every time.
+//
+// 800 ms: long enough for a busy period's decodes to arrive together (measured
+// in bursts of a few hundred milliseconds), short enough to answer inside the
+// same second they landed.
+const acQuiet = 800 * time.Millisecond
+
+// autoCallSweep closes the periods nothing has closed for us. Called on a timer.
+//
+// Per receiver, because with two decoders one may fall silent while the other
+// is busy — and it is the silent one's period that has to close for a missed
+// period to be counted at all.
+func (a *App) autoCallSweep() {
+	if !a.GetAutoCallSettings().Enabled {
+		return
+	}
+	type due struct {
+		inst, key string
+		at        time.Time
+		tr        int
+		buf       []acDecode
+	}
+	var ready []due
+	a.acMu.Lock()
+	for inst, key := range a.acPeriod {
+		if key == "" {
+			continue
+		}
+		tr := a.acTR[inst]
+		if tr <= 0 {
+			tr = 15
+		}
+		// Measured from when the last decode ARRIVED, not from the period it
+		// belongs to: a decode is stamped with the start of its own slot, so
+		// waiting "a slot plus four seconds" from that stamp is waiting until
+		// the middle of the NEXT slot. See acQuiet.
+		if time.Since(a.acFed[inst]) < acQuiet {
+			continue
+		}
+		// Judged once per period, and again only when something new has come in
+		// for it. The period itself is kept open until a decode from the NEXT one
+		// arrives, so a straggler is judged with the whole period behind it.
+		if a.acJudged[inst] == key && !a.acDirty[inst] {
+			continue
+		}
+		ready = append(ready, due{inst, key, a.acAt[inst], tr, a.acBuf[inst]})
+		a.acJudged[inst], a.acDirty[inst] = key, false
+	}
+	a.acMu.Unlock()
+	for _, d := range ready {
+		a.autoCallJudge(d.inst, d.key, d.at, d.tr, d.buf)
+	}
+}
+
+// autoCallSilence is the empty period. With the band dead, no decode ever
+// arrives to close the next one, and the target's absence would never be
+// counted — so a period with nothing in it is still a period.
+//
+// Only for the receiver the target is being called on: an idle second decoder
+// has no periods to miss.
+func (a *App) autoCallSilence() {
+	if !a.GetAutoCallSettings().Enabled {
+		return
+	}
+	inst, target := a.autoCallEngine().TargetInstance()
+	if target == "" {
+		return
+	}
+	a.acMu.Lock()
+	// Nothing pending for this receiver, and nothing judged for a while: the
+	// band has gone quiet under it.
+	quiet := !a.acDirty[inst] && time.Since(a.acLastJudge) > 20*time.Second
+	tr := a.acTR[inst]
+	a.acMu.Unlock()
+	if !quiet {
+		return
+	}
+	now := time.Now().UTC()
+	a.autoCallJudge(inst, acPeriodKey(now, tr), now, tr, nil)
+}
+
+func acPeriodKey(at time.Time, trSec int) string {
+	if trSec <= 0 {
+		trSec = 15
+	}
+	return fmt.Sprintf("%d", at.UTC().Unix()/int64(trSec))
+}
+
+// autoCallJudge resolves what the log needs from each station in the period,
+// runs the decision, and carries it out.
+func (a *App) autoCallJudge(inst, key string, at time.Time, tr int, buf []acDecode) {
+	a.acMu.Lock()
+	a.acLastJudge = time.Now()
+	a.acMu.Unlock()
+
+	// One status call for the whole period. It reads a cached worked-index, but
+	// it is still per-callsign work and a busy period is thirty of them.
+	seen := map[string]bool{}
+	var q []SpotQuery
+	var uniq []acDecode
+	for _, dd := range buf {
+		k := dd.d.Call + "|" + dd.d.Band + "|" + dd.d.Mode
+		if seen[k] {
+			// The same station twice in one period is one candidate, judged on
+			// its most callable line — the engine's bestOf does that, so both
+			// decodes are kept; only the status lookup is deduplicated.
+			uniq = append(uniq, dd)
+			continue
+		}
+		seen[k] = true
+		uniq = append(uniq, dd)
+		q = append(q, SpotQuery{Call: dd.d.Call, Band: dd.d.Band, Mode: dd.d.Mode})
+	}
+	status := map[string]SpotStatus{}
+	for _, st := range a.ClusterSpotStatuses(q) {
+		status[st.Call+"|"+st.Band+"|"+st.Mode] = st
+	}
+
+	chase := a.autoCallChase()
+	cands := make([]autocall.Candidate, 0, len(uniq))
+	for _, dd := range uniq {
+		st := status[dd.d.Call+"|"+dd.d.Band+"|"+dd.d.Mode]
+		c := candidateOf(dd.d, st, chase)
+		c.Watched = a.autoCallWatched(dd.d.Call)
+		c.Hidden = a.autoCallHidden(dd.d.Call)
+		cands = append(cands, c)
+	}
+
+	tx := a.autoCallTX()
+
+	act := a.autoCallEngine().OnPeriod(autocall.Period{
+		Instance: inst, Key: key, At: at, TRPeriod: tr, Decodes: cands, TX: tx,
+		MyCall: a.opCall,
+	})
+	a.autoCallDo(act)
+}
+
+// candidateOf turns one decode and the log's verdict on it into a candidate.
+//
+// Split out and kept pure because ONE line of it was wrong for weeks and
+// nothing could catch it: the entity's verdict was read as the station's.
+// chaseExtras is what the operator hunts BESIDES entities — the cluster's
+// orthogonal markers, from the same switches that decide whether the badges are
+// shown at all (Settings → DX Cluster). One answer for the eye and the
+// transmitter: a marker withdrawn from the screen is not one to call for.
+type chaseExtras struct{ pota, grid, pfx, county, state bool }
+
+func candidateOf(d autocall.Decode, st SpotStatus, ch chaseExtras) autocall.Candidate {
+	c := autocall.Candidate{
+		Decode: d,
+		// The ENTITY's verdict decides what is still needed…
+		Need: autoCallNeedOf(st.Status),
+		// …and THIS CALLSIGN on this band and mode decides whether calling it
+		// would be a duplicate.
+		//
+		// Status was used for both. "worked" there means the COUNTRY is in the
+		// log on this band and mode, so on a band where the operator has most of
+		// them, nearly every station on the air was refused as already worked —
+		// a trace of one evening shows twenty decodes out of twenty-one turned
+		// away that way, the watched DXpedition among them.
+		Worked: st.WorkedSlot,
+		// The need exists only because a QSL never came: worth chasing, and worth
+		// less than the same need never worked at all.
+		Unconfirmed: st.UnconfStatus,
+	}
+	// NOTHING LEFT ON THE ENTITY, AND STILL WORTH A CALL.
+	//
+	// A prefix, a square, a county, a state, a park: never worked, orthogonal to
+	// the entity's verdict, and exactly what the operator ticked in the chase
+	// settings. They ranked at nothing-needed, so auto-call sat through a
+	// never-worked WPX prefix calling CQ and did not answer it.
+	//
+	// Only when the entity has nothing to add — a new band that is ALSO a new
+	// prefix is a new band, and says so.
+	if c.Need == autocall.NeedNone {
+		switch {
+		case ch.pfx && st.NewPfx:
+			c.Need, c.Extra, c.Unconfirmed = autocall.NeedExtra, "prefix", st.UnconfPfx
+		case ch.county && st.NewCounty:
+			c.Need, c.Extra, c.Unconfirmed = autocall.NeedExtra, "county", st.UnconfCty
+		case ch.state && st.NewState:
+			c.Need, c.Extra, c.Unconfirmed = autocall.NeedExtra, "state", st.UnconfState
+		case ch.grid && st.NewGrid:
+			c.Need, c.Extra, c.Unconfirmed = autocall.NeedExtra, "square", st.GridState == "unconf"
+		case ch.pota && st.NewPOTA:
+			c.Need, c.Extra = autocall.NeedExtra, "park"
+		}
+	}
+	return c
+}
+
+// autoCallChase reads the chase switches the cluster and the decode list use.
+//
+// Read once per period rather than per decode: they are settings-store reads,
+// and the period loop runs over every station on the band.
+func (a *App) autoCallChase() chaseExtras {
+	on := func(key string) bool {
+		if a.settings == nil {
+			return true
+		}
+		v, _ := a.settings.Get(a.ctx, "ui.opslog."+key)
+		return v != "0" // unset means on, as it does on the screen
+	}
+	return chaseExtras{
+		pota:   on("chasePota"),
+		grid:   on("chaseGrids"),
+		pfx:    on("chasePfx"),
+		county: on("chaseCounty"),
+		state:  on("chaseState"),
+	}
+}
+
+// autoCallDo carries out a decision and records it.
+func (a *App) autoCallDo(act autocall.Action) {
+	if act.Reason != "" {
+		a.acMu.Lock()
+		a.acReason = act.Reason
+		a.acMu.Unlock()
+		applog.Printf("autocall: %s", act.Reason)
+	}
+	switch act.Kind {
+	case autocall.DoReply:
+		d := act.Decode
+		if err := a.AnswerDecode(d.Instance, d.Ms, d.SNR, d.DT, d.AudioHz, d.ModeRaw, d.MsgRaw, d.LowConf); err != nil {
+			applog.Printf("autocall: the call to %s could not be sent: %v", d.Call, err)
+		}
+	case autocall.DoHalt:
+		// Soft: let the over finish, then stop transmitting. Hard: stop now.
+		// The engine decides — see Action.Soft.
+		if err := a.HaltDecodeTx("", act.Soft); err != nil {
+			applog.Printf("autocall: halt failed: %v", err)
+		}
+	}
+	if act.Kind != autocall.DoNothing || act.Reason != "" {
+		a.emitAutoCall()
+	}
+}
+
+// autoCallNoteTX is the attempt counter, fed from the decoder's own status.
+//
+// ONCE PER TRANSMIT PERIOD. Status arrives every second and says "transmitting"
+// throughout the over, so counting each one would spend the whole allowance of
+// seven calls inside a single fifteen-second slot — the counter has to measure
+// transmissions, not seconds of carrier.
+func (a *App) autoCallNoteTX(tx autocall.TXState) {
+	if !a.GetAutoCallSettings().Enabled {
+		return
+	}
+	a.acMu.Lock()
+	// Per receiver as well as per period: in a split view both decoders report
+	// their own transmissions, and one key for both would let the second one's
+	// carrier swallow the first one's count.
+	key := tx.Instance + "|" + acPeriodKey(time.Now().UTC(), a.acTR[tx.Instance])
+	if a.acTXPeriod == key {
+		a.acMu.Unlock()
+		return
+	}
+	a.acTXPeriod = key
+	a.acMu.Unlock()
+	a.autoCallDo(a.autoCallEngine().NoteTX(tx))
+}
+
+// autoCallTX is the last transmit state reported, as the engine wants it.
+func (a *App) autoCallTX() autocall.TXState {
+	a.acMu.Lock()
+	defer a.acMu.Unlock()
+	return a.acTX
+}
+
+func (a *App) autoCallSetTX(tx autocall.TXState) {
+	a.acMu.Lock()
+	a.acTX = tx
+	a.acMu.Unlock()
+}
+
+// SetAutoCallVisible is the decodes panel saying what it is SHOWING.
+//
+// The panel owns the filters and therefore owns the answer: reimplementing them
+// here would give the screen and the transmitter two definitions of the same
+// word, which is how they end up disagreeing. It sends the callsigns that
+// survive its filters, and the engine calls nothing else.
+//
+// An empty list with active=false means "no filtering in force" — the panel was
+// closed, or has never been opened this session — and the ladder decides alone.
+func (a *App) SetAutoCallVisible(calls []string, active bool) {
+	set := make(map[string]bool, len(calls))
+	for _, c := range calls {
+		if c = strings.ToUpper(strings.TrimSpace(c)); c != "" {
+			set[c] = true
+		}
+	}
+	a.acMu.Lock()
+	a.acVisible, a.acVisibleOn = set, active
+	a.acMu.Unlock()
+}
+
+// autoCallHidden reports whether the panel's filters are keeping a station off
+// the screen. Unknown when nothing is being published: not hidden.
+func (a *App) autoCallHidden(call string) bool {
+	a.acMu.Lock()
+	defer a.acMu.Unlock()
+	if !a.acVisibleOn {
+		return false
+	}
+	return !a.acVisible[strings.ToUpper(strings.TrimSpace(call))]
+}
+
+// autoCallNeedOf maps the cluster's own status vocabulary onto the ladder. One
+// vocabulary for both, so a station that reads NEW BAND in the decodes list is
+// the same NEW BAND the auto-call ranks — two answers to one question is how
+// the panel and the caller quietly start disagreeing.
+func autoCallNeedOf(status string) autocall.Need {
+	switch status {
+	case "new":
+		return autocall.NeedDXCC
+	case "new-band-mode", "new-band":
+		// New on both counts is at least a new band, and it is the better catch
+		// of the two — it must not fall below a plain new band.
+		return autocall.NeedBand
+	case "new-mode":
+		return autocall.NeedMode
+	case "new-slot":
+		return autocall.NeedSlot
+	}
+	return autocall.NeedNone
+}
+
+func (a *App) autoCallNeed(call, band, mode string) autocall.Need {
+	st := a.ClusterSpotStatuses([]SpotQuery{{Call: call, Band: band, Mode: mode}})
+	if len(st) == 0 {
+		return autocall.NeedNone
+	}
+	return autoCallNeedOf(st[0].Status)
+}
+
+// autoCallWatched asks the watch list, which is the same list the spot alerts
+// and the cluster colouring use.
+func (a *App) autoCallWatched(call string) bool {
+	if a.watchlist == nil {
+		return false
+	}
+	_, ok := a.watchlist.Match(strings.ToUpper(strings.TrimSpace(call)))
+	return ok
+}
+
+// startAutoCall starts the engine's loop, with auto-call OFF.
+//
+// It is never on from a stored value. This is the one setting in the program
+// that puts the station on the air by itself, and the operator who left it on
+// last night is not necessarily the one at the desk now — nor necessarily at
+// the desk at all: OpsLog starts with Windows, and a rig that powers up with it
+// would begin calling into an empty shack, on whatever band the radio happens
+// to be on, hours after anybody decided that was a good idea.
+//
+// Arming it is one click, and it is a click somebody has to make.
+func (a *App) startAutoCall() {
+	a.disarmAutoCall("launch")
+	go a.autoCallLoop()
+}
+
+// disarmAutoCall switches auto-call off and writes that down.
+//
+// The setting is what the toolbar and the settings panel both read, so turning
+// the engine off without storing it would show a lit switch over a silent
+// transmitter — and the operator's next click, meaning "on", would send "off".
+func (a *App) disarmAutoCall(why string) {
+	if a.settingOr(keyAutoCallOn, "0") == "1" {
+		applog.Printf("autocall: off at %s — it is never armed from a stored setting", why)
+	}
+	a.setSetting(keyAutoCallOn, "0")
+	a.applyAutoCall()
+}
+
+func (a *App) autoCallLoop() {
+	// A quarter of a second. The sweeper is what closes a period, so its tick is
+	// part of the same budget as acQuiet: a two-second tick added up to two
+	// seconds of its own to every answer, which is most of the margin there is.
+	// The work per tick is a map read.
+	t := time.NewTicker(250 * time.Millisecond)
+	defer t.Stop()
+	for range t.C {
+		if a.ctx == nil {
+			return
+		}
+		a.autoCallSweep()
+		a.autoCallSilence()
+	}
+}

autocall_wiring_test.go

@@ -0,0 +1,81 @@
+package main
+
+import (
+	"testing"
+
+	"hamlog/internal/autocall"
+)
+
+// The entity's verdict is not the station's.
+//
+// From the air: on 10 m, where most countries are already in the log, the
+// engine refused twenty decodes out of twenty-one as "worked" — a watched
+// DXpedition calling CQ among them — because the ENTITY's status was read as
+// the station's.
+// allChased is the default: every orthogonal marker ticked.
+var allChased = chaseExtras{pota: true, grid: true, pfx: true, county: true, state: true}
+
+func TestCandidateWorkedIsTheCallsignNotTheEntity(t *testing.T) {
+	d := autocall.Decode{Call: "J38DX", Band: "10m", Mode: "FT8", IsNew: true}
+
+	// Grenada worked on 10 m FT8, this callsign never worked: nothing is needed
+	// from it, and calling it is NOT a duplicate.
+	c := candidateOf(d, SpotStatus{Status: "worked", WorkedSlot: false}, allChased)
+	if c.Worked {
+		t.Error("a station never worked was refused because its entity was")
+	}
+	if c.Need != autocall.NeedNone {
+		t.Errorf("need = %v on a worked entity, want none", c.Need)
+	}
+
+	// The same callsign already in the log on this band and mode IS a duplicate.
+	if c := candidateOf(d, SpotStatus{Status: "worked", WorkedSlot: true}, allChased); !c.Worked {
+		t.Error("a callsign already worked on this band and mode was not flagged")
+	}
+
+	// And a real need still carries through, with the unconfirmed distinction.
+	c = candidateOf(d, SpotStatus{Status: "new-band", UnconfStatus: true}, allChased)
+	if c.Need != autocall.NeedBand || !c.Unconfirmed {
+		t.Errorf("new-band unconfirmed came through as %v (unconf=%v)", c.Need, c.Unconfirmed)
+	}
+}
+
+// A station whose ENTITY has nothing left to give can still be the reason the
+// operator is on the band: a WPX prefix, a county, a square, a park that has
+// never been worked. Reported from the air — auto-call sat through a
+// never-worked prefix calling CQ and did nothing.
+func TestOrthogonalMarkersAreWorthACall(t *testing.T) {
+	d := autocall.Decode{Call: "BH2SWB", Band: "10m", Mode: "FT8", IsNew: true}
+	worked := SpotStatus{Status: "worked"}
+
+	for _, tc := range []struct {
+		what string
+		st   SpotStatus
+		want string
+	}{
+		{"prefix", SpotStatus{Status: "worked", NewPfx: true}, "prefix"},
+		{"county", SpotStatus{Status: "worked", NewCounty: true}, "county"},
+		{"state", SpotStatus{Status: "worked", NewState: true}, "state"},
+		{"square", SpotStatus{Status: "worked", NewGrid: true}, "square"},
+		{"park", SpotStatus{Status: "worked", NewPOTA: true}, "park"},
+	} {
+		c := candidateOf(d, tc.st, allChased)
+		if c.Need != autocall.NeedExtra || c.Extra != tc.want {
+			t.Errorf("%s: need=%v extra=%q, want extra %q", tc.what, c.Need, c.Extra, tc.want)
+		}
+		// And not when the operator does not chase that kind of thing: the
+		// switch that withdraws the badge withdraws the call with it.
+		if c := candidateOf(d, tc.st, chaseExtras{}); c.Need != autocall.NeedNone {
+			t.Errorf("%s: called for a marker the operator does not chase", tc.what)
+		}
+	}
+
+	// It is the LOWEST rung: a real need on the entity still says what it is.
+	if c := candidateOf(d, SpotStatus{Status: "new-band", NewPfx: true}, allChased); c.Need != autocall.NeedBand {
+		t.Errorf("need = %v — a new band that is also a new prefix is a new band", c.Need)
+	}
+	// Nothing anywhere is still nothing.
+	if c := candidateOf(d, worked, allChased); c.Need != autocall.NeedNone {
+		t.Errorf("need = %v on a station with nothing to gain", c.Need)
+	}
+}

bandopen_sources.go

@@ -93,14 +93,27 @@ func keepKnownBands(want []string) []string {
 	return out
 }
 
+// pskrMaxGrids bounds the receiver squares the broker is asked to filter on.
+// Each is one subscription, and the traffic follows the area: 2000 km is about
+// 615 squares, which the broker takes in batches without complaint. The cap is
+// there so an absurd radius cannot turn into thousands of subscriptions — past
+// it the nearest squares are kept, and the log says how many.
+const pskrMaxGrids = 900
+
 // bandOpenNearKm reads the stored receiver radius, falling back to the default
 // for anything unset or out of range. The bounds are the two ways to make the
 // watch useless: below 25 km almost nobody is ever near enough to hear anything,
-// and past 1000 km the reports stop being about the operator's own path — which
-// is the entire premise of measuring from a receiver rather than a transmitter.
+// and past 3000 km a "nearby" receiver is on the far side of a continent, which
+// says nothing about the operator's own path.
+//
+// The ceiling was 1000 km, chosen with Europe in mind, where that radius holds a
+// dozen countries' worth of receivers. It is the wrong number in VK: a station
+// there can have almost nobody inside 300 km, and the chase list stayed empty
+// not because nothing was on the air but because nothing was listening close
+// enough to count.
 func bandOpenNearKm(raw string) int {
 	n, err := strconv.Atoi(strings.TrimSpace(raw))
-	if err != nil || n < 25 || n > 1000 {
+	if err != nil || n < 25 || n > 3000 {
 		return pskr.DefaultNearKm
 	}
 	return n
@@ -194,7 +207,17 @@ func (a *App) startBandOpenFeed() {
 	// hundred survived the NearKm test below. One ring of squares — about the
 	// same 300 km — is 0.2 to 1.2 a second, and the same for every operator,
 	// where filtering by DXCC ranged from 1.2 (OH) to 72.5 (K).
-	rxGrids := geo.NeighbourGrids(a.opLat, a.opLon, 1)
+	//
+	// The set follows the radius the operator asked for. It was one fixed ring
+	// whatever they set — about 300 km — so raising the radius bought nothing:
+	// the reports that would have satisfied it were never sent to us in the
+	// first place, and an operator in a thinly-populated region who widened the
+	// circle to find some receivers saw no change at all.
+	rxGrids := geo.GridsWithin(a.opLat, a.opLon, float64(s.NearKm), pskrMaxGrids)
+	if len(rxGrids) == 0 {
+		rxGrids = geo.NeighbourGrids(a.opLat, a.opLon, 1)
+	}
+	applog.Printf("pskr: receiver filter — %d squares within %d km of the station", len(rxGrids), s.NearKm)
 
 	var onGrid func(call, grid string)
 	if chaseGrids {

changelog.json

@@ -1,4 +1,256 @@
 [
+  {
+    "version": "0.27.17",
+    "date": "",
+    "en": [
+      "[NEW] Satellites. A new tab (Tools → Satellites) works the amateur birds from end to end. A map with each satellite's footprint and the selected one's path over the ground; a sky plot the way every tracker draws one, centre straight up and rim at the horizon, with the whole pass and where the bird is on it; a countdown to AOS — or to LOS once it is up — with rise, peak and set, their compass directions, distance, altitude and footprint; and a pass table for everything you follow.\n\nTrack puts the radio on the satellite and keeps it there, once a second: an IC-9700 or IC-9100 in its own satellite mode, a FlexRadio on two slices (A the downlink, B the uplink, created if missing, full duplex on) — and any other rig on the downlink, which it says plainly rather than half-doing the job. Tune the receiver where you like: the tracker reads the dial, takes it as the station you have chosen, and moves the transmitter to match. An az/el rotator follows along, either driven directly over EasyComm II or handed to PstRotator if you already run it; a 450° rotator is used as one, so a pass crossing north continues instead of unwinding.\n\nQSOs made while tracking are logged with the NOMINAL frequencies, SAT_NAME, SAT_MODE and PROP_MODE=SAT — the transponder's own numbers, which both stations can agree on, rather than where one radio happened to be.\n\nOrbital elements come from Celestrak with a mirror behind it and are kept on disk, so the tab is full the moment it opens even with no internet; elements for a bird no feed carries yet can be pasted in and survive every refresh. Twenty-five satellites ship with a frequency plan — the FM and linear birds, GreenCube, QO-100 narrow and wide — in a file you can correct yourself when a transponder is switched. Everything about setting it up lives in Settings → Satellites, including which satellites you follow, chosen the way you choose awards.",
+      "Each map keeps its own imagery. The world map and the grid-square map shared one setting, so choosing satellite imagery to look at grids repainted the main map as well, and there was no way to have terrain on one and plain streets on the other. All four — world, grid squares, FT map, satellites — now remember their own choice, and it travels with the data folder like the remembered views. A choice already made for the grid map is carried over, not reset.",
+      "Two or three FT8 programs at once no longer fight over the callsign field. Click a station in MSHV and only MSHV has a DX Call; WSJT-X and JTDX beside it are idle and say so once a second each — and OpsLog was reading those as MSHV abandoning the station, so the entry emptied and refilled at 1 Hz and the map zoomed in and out with it. A cleared DX Call is now read per program, never across the listener; and the program that announces a station keeps the entry field until it clears its own call, is closed, or the QSO is logged.",
+      "The FT decodes table sorts on SNR, frequency, distance, country and status — click the heading. Within each slot and never across them: the periods are what the panel is, and a list sorted end to end would mix three minutes of decodes into one column with no way to tell which window any of them came from. One click sorts the way that column is worth reading (strongest signal, furthest DX, lowest frequency, A to Z, most wanted first), the second reverses it, the third gives back the order the decoder heard them in. Stations with no grid, or no country resolved yet, sort to the end either way rather than pretending to a distance of zero.",
+      "The cluster editor offers a list of known nodes. Setting up a telnet cluster is the step operators get stuck on: the address and the port are two pieces of information nobody has to hand, and a typo in either looks exactly like a node that is down. Pick one and the fields fill in — F4BPO, DXFun, F5LEN, F5MZN, KM3T, SOTA, POTA, and the two Reverse Beacon feeds, which are one network on two ports where 7000 carries CW and RTTY and 7001 carries FT8 and FT4. Everything stays editable, and a node typed in by hand works exactly the same. More will be added.",
+      "Preferences no longer lag behind the keyboard. Typing a cluster macro re-rendered the whole dialog on every keystroke and wrote a row into the database per character; the twenty-four boxes now stand on their own and the database write waits for the typing to stop."
+    ],
+    "fr": [
+      "[NOUVEAU] Satellites. Un nouvel onglet (Outils → Satellites) permet de travailler les satellites amateurs de bout en bout. Une carte avec l'empreinte de chacun et la trace au sol du satellite sélectionné ; une vue du ciel comme la dessine n'importe quel tracker, centre à la verticale et bord à l'horizon, avec le passage entier et la position du satellite dessus ; un compte à rebours jusqu'à l'AOS — ou jusqu'au LOS une fois levé — avec lever, culmination et coucher, leurs directions à la boussole, distance, altitude et empreinte ; et un tableau des passages de tout ce que vous suivez.\n\n« Suivre » met la radio sur le satellite et l'y maintient, chaque seconde : un IC-9700 ou IC-9100 dans son propre mode satellite, un FlexRadio sur deux slices (A la descente, B la montée, créées si elles manquent, full duplex activé) — et n'importe quel autre poste sur la descente seule, ce qu'il annonce clairement plutôt que de faire le travail à moitié. Accordez le récepteur où vous voulez : le suivi lit le VFO, y voit la station que vous avez choisie, et déplace l'émetteur en conséquence. Un rotor az/él suit aussi, piloté directement en EasyComm II ou confié à PstRotator si vous le faites déjà tourner ; un rotor 450° est utilisé comme tel, et un passage qui traverse le nord continue au lieu de se dérouler.\n\nLes QSO faits pendant le suivi sont enregistrés avec les fréquences NOMINALES, SAT_NAME, SAT_MODE et PROP_MODE=SAT — les chiffres du transpondeur, sur lesquels les deux stations peuvent s'accorder, plutôt que l'endroit où une radio se trouvait.\n\nLes éléments orbitaux viennent de Celestrak, avec un miroir derrière, et sont conservés sur disque : l'onglet est rempli dès son ouverture, même sans internet. Les éléments d'un satellite qu'aucun flux ne diffuse encore peuvent être collés à la main et survivent à chaque mise à jour. Vingt-cinq satellites sont livrés avec un plan de fréquences — les FM et les linéaires, GreenCube, QO-100 bande étroite et large — dans un fichier que vous pouvez corriger vous-même quand un transpondeur change de mode. Toute la configuration est dans Réglages → Satellites, y compris le choix des satellites suivis, sélectionnés comme on choisit ses diplômes.",
+      "Chaque carte garde son propre fond. La carte principale et celle des carrés partageaient un seul réglage : choisir la vue satellite pour regarder les carrés repeignait aussi la carte principale, et il n'y avait aucun moyen d'avoir le relief sur l'une et les rues sur l'autre. Les quatre — principale, carrés, FT map, satellites — retiennent désormais leur propre choix, qui suit le dossier de données comme les positions mémorisées. Un choix déjà fait pour la carte des carrés est repris, pas réinitialisé.",
+      "Deux ou trois logiciels FT8 en même temps ne se disputent plus le champ indicatif. Cliquez une station dans MSHV et lui seul a un DX Call ; WSJT-X et JTDX à côté sont au repos et le disent une fois par seconde chacun — et OpsLog y lisait MSHV abandonnant la station : le champ se vidait et se remplissait à 1 Hz, la carte zoomant au même rythme. Un DX Call effacé est désormais lu par programme, jamais à l'échelle du port ; et le logiciel qui annonce une station garde le champ jusqu'à ce qu'il efface son propre indicatif, soit fermé, ou que le QSO soit enregistré.",
+      "Le tableau des décodages FT se trie sur SNR, fréquence, distance, pays et statut — cliquez l'en-tête. À l'intérieur de chaque créneau et jamais au travers : les périodes sont la raison d'être du panneau, et un tri de bout en bout mélangerait trois minutes de décodages en une colonne sans plus savoir de quelle fenêtre chacun vient. Un clic trie dans le sens où la colonne se lit (signal le plus fort, DX le plus lointain, fréquence la plus basse, de A à Z, le plus recherché d'abord), un second inverse, un troisième rend l'ordre dans lequel le décodeur les a entendus. Les stations sans locator, ou dont le pays n'est pas encore résolu, se rangent à la fin dans les deux sens plutôt que de se faire passer pour une distance nulle.",
+      "L'éditeur de cluster propose une liste de nœuds connus. La configuration d'un cluster telnet est l'étape où l'on se bloque : l'adresse et le port sont deux informations que personne n'a sous la main, et une faute de frappe dans l'une ou l'autre ressemble exactement à un nœud en panne. On en choisit un et les champs se remplissent — F4BPO, DXFun, F5LEN, F5MZN, KM3T, SOTA, POTA, et les deux flux Reverse Beacon, qui sont un même réseau sur deux ports où 7000 porte la CW et le RTTY et 7001 le FT8 et le FT4. Tout reste modifiable, et un nœud saisi à la main fonctionne exactement pareil. D'autres seront ajoutés.",
+      "Les Préférences ne traînent plus derrière le clavier. Saisir une macro de cluster redessinait tout le dialogue à chaque frappe et écrivait une ligne en base par caractère ; les vingt-quatre champs sont désormais indépendants et l'écriture en base attend la fin de la saisie."
+    ]
+  },
+  {
+    "version": "0.27.16",
+    "date": "",
+    "en": [
+      "[NEW] Typing a digital watering hole sets the mode with it. A spot click has always carried one; a frequency typed by hand carried none, so the rig stayed in SSB on 28.074 while the operator waited for decodes. Same table and same tolerance as a spot (±3 kHz of a known FT8/FT4/JS8 frequency), only towards the digital modes: tuning away from one leaves the mode alone, because there the frequency says nothing about what you mean to do.",
+      "Yaesu CAT now drives the older radios. The FTDX10, FT-991A, FT-891 and FT-710 write a frequency in nine digits; everything before them — FTDX3000, FTDX5000, FTDX1200, FT-2000, FT-950, FT-450 — writes eight and answers a nine-digit command with a rejection, which is what an FTDX3000 owner saw: every FA refused and a radio that would not follow. The width is taken from the rig’s own reply rather than from a table of models, so a set is in the format that radio speaks — including models this backend has never heard of.",
+      "Yaesu: RTTY can be set on USB (Settings → CAT). ADIF records only “RTTY” and the rig has both sidebands, so the log cannot answer for it — the older RTTY-L stays the default, and a station whose FSK controller wants the upper one says so once. The choice reaches the radio already connected: it is not part of what defines the link, so the link is not rebuilt for it — and until now that meant it waited for the next launch while the rig went on choosing LSB.",
+      "The update no longer relaunches OpsLog through a hidden PowerShell. An unsigned program that replaces itself on disk, clears the mark-of-the-web and then spawns a windowless PowerShell to start another executable is — byte for byte — the shape of a dropper, and Windows Defender’s machine-learning model reads the shape, not the intention: 0.27.14 was removed from a station under Trojan:Script/Wacatac.H!ml. The new version simply starts itself and waits its turn on the single-instance lock, which it already knew how to do. Only the rare fallback path, when the running file cannot even be renamed, still needs a helper that outlives the process.",
+      "Rotor widget: with more than one rotor the panel no longer runs off the bottom. The selector row appears above the dial, and the widget’s height is not its own to take — it sits in a strip sized by the entry form beside it — so the SP/LP pair and half the Stop button were cut off. The dial, the button rows and the padding now give that row back between them, in proportion, and nothing is dropped."
+    ],
+    "fr": [
+      "[NEW] Taper une fréquence d’appel numérique règle le mode avec elle. Un clic sur un spot en portait un depuis toujours ; une fréquence tapée à la main n’en portait aucun, si bien que le poste restait en SSB sur 28.074 pendant qu’on attendait les décodages. Même table et même tolérance qu’un spot (±3 kHz d’une fréquence FT8/FT4/JS8 connue), et seulement vers les modes numériques : en s’en éloignant le mode n’est pas touché, car là la fréquence ne dit rien de ce qu’on veut faire.",
+      "Le CAT Yaesu pilote désormais les postes plus anciens. FTDX10, FT-991A, FT-891 et FT-710 écrivent une fréquence sur neuf chiffres ; tout ce qui précède — FTDX3000, FTDX5000, FTDX1200, FT-2000, FT-950, FT-450 — l’écrit sur huit et rejette une commande à neuf chiffres. C’est ce que voyait un possesseur de FTDX3000 : chaque FA refusée et une radio qui ne suivait pas. Le format est pris dans la réponse du poste plutôt que dans une table de modèles : l’envoi part donc dans la langue de cette radio-là, y compris pour des modèles que ce backend ne connaît pas.",
+      "Yaesu : le RTTY peut être placé en USB (Réglages → CAT). L’ADIF n’enregistre que « RTTY » et le poste a les deux bandes latérales : le log ne peut pas répondre à sa place. Le RTTY-L ancien reste par défaut, et une station dont l’interface FSK veut la supérieure le dit une fois. Le choix atteint le poste déjà connecté : il ne fait pas partie de ce qui définit la liaison, donc celle-ci n’est pas reconstruite pour lui — et jusqu’ici cela voulait dire qu’il attendait le prochain lancement pendant que le poste continuait de choisir la LSB.",
+      "La mise à jour ne relance plus OpsLog par un PowerShell caché. Un programme non signé qui se remplace sur le disque, efface la marque « téléchargé depuis Internet » puis lance un PowerShell sans fenêtre pour démarrer un autre exécutable a — à l’octet près — la forme d’un dropper, et le modèle d’apprentissage de Windows Defender lit la forme, pas l’intention : la 0.27.14 a été supprimée chez un OM sous Trojan:Script/Wacatac.H!ml. La nouvelle version se lance elle-même et attend son tour sur le verrou d’instance unique, ce qu’elle savait déjà faire. Seul le repli rare, quand le fichier en cours d’exécution ne peut même pas être renommé, garde un assistant qui survit au processus.",
+      "Widget rotor : avec plusieurs rotors, le panneau ne déborde plus par le bas. La rangée de sélection apparaît au-dessus du cadran, et la hauteur du widget ne lui appartient pas — il occupe une bande dont la hauteur est fixée par la saisie à côté — si bien que la paire SP/LP et la moitié du bouton Stop se retrouvaient coupées. Le cadran, les rangées de boutons et les marges rendent désormais cette hauteur entre eux, chacun pour sa part, sans rien supprimer."
+    ]
+  },
+  {
+    "version": "0.27.15",
+    "date": "",
+    "en": [
+      "[NEW] The WSJT-X / JTDX highlight colours are yours to choose (Settings → UDP), one per verdict — watch list, new DXCC, new band, worked. Only the background is set: the text colour is worked out from it, so a chosen colour cannot come back unreadable in the decoder’s window. The “grey out stations already worked” switch keeps its purpose — it decides WHETHER dupes are marked, not what colour they are — and is now called “Mark stations already worked”.",
+      "[NEW] Rotor dial: a circular scale and a beam instead of an arrow. The square ring made a marker at 45° sit further from the centre than one at north — a dial is read by angle, so the ring it is read against is now the same distance away all the way round. The antenna is drawn as a sector that fades outwards, which is the shape of the thing it stands for; where the mouse would send it appears in the same shape in orange, and its azimuth in place of the current heading while you aim. Green for where the antenna is, orange for where it would go, yellow for what was ordered — the second lobe of a bidirectional Ultrabeam and the dashed boom are unchanged. Design from EC1KD again.",
+      "WSJT-X highlighting: a watch-list station already worked on this band and mode is no longer painted as one to call. The list is a statement of intent, not of what is left to do, and its pink outranked everything — including the log — so a station already worked stayed pink for the session with no way to tell it from one still needed.",
+      "Motorised antenna: the transmitter is released as soon as the elements stop. Three delays were stacked between the antenna finishing and the operator being allowed to call — the antenna polled every two seconds, the transmit gag held for three after the command whatever the antenna said, and the screen refreshed every three. Both the Ultrabeam and the SteppIR are now polled four times a second WHILE IT MOVES (and left at two seconds when it is still, where nothing changes), the gag only bridges the command itself, and the widget follows at half a second. The SteppIR also reports a commanded move at once, as the Ultrabeam already did: it says nothing until its own poll comes round, so the shortened gag would otherwise have released the transmitter in the middle of a move.",
+      "Motorised antenna: the indicator turns amber the instant the move is ORDERED, from a button or from an automatic band change with tracking on, instead of waiting for the antenna to say it is moving. The transmit gag already started there; the screen did not, so the two disagreed by a second or more — and on a follow there was no warning at all until a poll landed.",
+      "Icom network audio starts at once instead of half a minute later. The message that authorises the stream is sent during the login, before the audio socket exists — so the rig was told to send audio to a port nothing was bound to, got a port-unreachable back, and only resumed when its own retry timer came round. It is sent once more as soon as the port is listening.",
+      "Icom over the network: when CI-V goes quiet while the experimental RX audio stream is still delivering, the log now says so and names the switch to try. The two share the rig’s session, and the shape in the field is exactly that — hundreds of audio packets arriving, not one CI-V reply, the watchdog tearing the session down, and the whole thing starting again. The silence report also lists the last eight CI-V commands sent: a rig that answers at connect and then never again has usually been sent something it does not like, and a count of unanswered commands never said which one.",
+      "Icom over the network: a rig left in standby no longer sits in a dial-and-drop loop. The clock that bounds “the control link answers but no CI-V comes back” belongs to a session and was never cleared when a new one opened, so every fresh session started already past its grace — torn down at once, redialled twenty seconds later, and torn down again for as long as the radio was asleep. Silent since connect is now read as what it is: a rig in standby, with the session kept so it can be woken.",
+      "The Icom console appears whenever the configured radio is an Icom, not only once the rig is talking — the console is where the power-ON button lives, so it used to be missing at the one moment it was needed. The console’s configured backend also follows a radio switched from the status bar, instead of waiting for a trip through Settings and a Save that changed nothing.",
+      "Audio: the Listening device now says when it cannot be opened. A device unplugged, renamed by Windows or unable to run at 16 kHz failed silently while everything upstream reported success — the stream up, the packets arriving, the monitor started — which is the whole of “I turned the sound on and nothing comes out”. The log also says, once, whether the network RX audio is reaching the speakers or arriving with nobody listening.",
+      "ADIF export: a record is written on one line again. ADDRESS is a multi-line field by the standard and callbooks and other loggers fill it that way — “Kabul”, four blank lines, “Afghanistan” — and OpsLog wrote it out as it was, so a record ran down a dozen lines with the next apparently starting in the middle of the page. Line breaks inside a value are now joined with a comma, which is how an address reads on one line anyway. The files were always valid (ADIF counts bytes); they were unreadable.",
+      "Club Log uploads are no longer refused as “not configured”. The check added for services with no credentials demanded a Club Log API key, which nobody has ever set — OpsLog carries its own application key — so an operator whose live upload had worked for months was turned away when sending QSOs by hand. Each service’s requirements now live beside the uploader that enforces them, and the message names the fields that are actually missing.",
+      "FT map: the callsign, square and report show on hover again. The invisible circle that catches the clicks sits on top of the dot, so it takes the hover too — and the label was bound only to the dot underneath, which left the map silent from the moment the stations became clickable."
+    ],
+    "fr": [
+      "[NEW] Les couleurs de mise en évidence WSJT-X / JTDX sont au choix (Réglages → UDP), une par verdict — watchlist, nouveau DXCC, nouvelle bande, contactée. Seul le fond se règle : la couleur du texte en est déduite, pour qu’une couleur choisie ne revienne jamais illisible dans la fenêtre du décodeur. L’option « griser les stations déjà contactées » garde sa raison d’être — elle décide SI les doublons sont marqués, pas de quelle couleur — et s’appelle désormais « Marquer les stations déjà contactées ».",
+      "[NEW] Cadran rotor : échelle circulaire et faisceau au lieu d’une flèche. L’anneau carré plaçait un repère à 45° plus loin du centre qu’un repère au nord — un cadran se lit par l’angle, donc l’anneau qui sert de référence est désormais à la même distance tout autour. L’antenne est dessinée comme un secteur qui s’estompe vers l’extérieur, ce qui est la forme de ce qu’il représente ; là où la souris l’enverrait apparaît dans la même forme en orange, et son azimut à la place du cap courant pendant qu’on vise. Vert pour où l’antenne est, orange pour où elle irait, jaune pour ce qui a été demandé — le deuxième lobe d’un Ultrabeam bidirectionnel et le boom en pointillés sont inchangés. Design d’EC1KD, encore.",
+      "Mise en évidence WSJT-X : une station de la watchlist déjà contactée sur cette bande et ce mode n’est plus peinte comme une station à appeler. La liste dit une intention, pas ce qu’il reste à faire, et son rose passait devant tout — y compris le carnet — si bien qu’une station déjà faite restait rose toute la session, sans moyen de la distinguer d’une station encore à faire.",
+      "Antenne motorisée : l’émission est rendue dès que les éléments s’arrêtent. Trois délais s’ajoutaient entre la fin du mouvement et le droit d’appeler — l’antenne interrogée toutes les deux secondes, le blocage d’émission maintenu trois secondes après la commande quoi qu’en dise l’antenne, et l’écran rafraîchi toutes les trois. L’Ultrabeam comme la SteppIR sont désormais interrogées quatre fois par seconde PENDANT qu’elle bouge (et laissée à deux secondes à l’arrêt, où rien ne change), le blocage ne couvre plus que la commande elle-même, et le widget suit à la demi-seconde. La SteppIR signale aussi un mouvement dès qu’il est commandé, comme le faisait déjà l’Ultrabeam : elle ne dit rien avant sa propre lecture, et le blocage raccourci aurait sinon rendu l’émission en plein mouvement.",
+      "Antenne motorisée : l’indicateur passe à l’ambre à l’instant où le mouvement est COMMANDÉ, par un bouton comme par un changement de bande automatique quand le suivi est actif, au lieu d’attendre que l’antenne dise qu’elle bouge. Le blocage d’émission démarrait déjà là ; l’écran non, et les deux se contredisaient d’une seconde ou plus — sur un suivi, il n’y avait aucun signe avant l’arrivée d’une lecture.",
+      "L’audio réseau Icom démarre tout de suite au lieu d’une demi-minute plus tard. Le message qui autorise le flux part pendant la connexion, avant que la prise audio n’existe : le poste se voyait donc demander d’émettre vers un port où personne n’écoutait, recevait un « port injoignable » en retour, et ne reprenait qu’au tour suivant de son propre minuteur. Il est renvoyé dès que le port écoute.",
+      "Icom en réseau : quand le CI-V devient muet alors que le flux audio expérimental continue d’arriver, le journal le dit et nomme l’option à essayer. Les deux partagent la session du poste, et c’est exactement la forme observée en vrai — des centaines de paquets audio, pas une réponse CI-V, le chien de garde qui coupe la session, et tout qui recommence. Le rapport de silence liste aussi les huit dernières commandes CI-V envoyées : un poste qui répond à la connexion puis plus jamais s’est en général vu envoyer quelque chose qu’il n’aime pas, et un compteur de commandes sans réponse n’a jamais dit laquelle.",
+      "Icom en réseau : un poste laissé en veille ne tourne plus en boucle connexion/déconnexion. L’horloge qui borne « la liaison de contrôle répond mais aucun CI-V ne revient » appartient à une session et n’était jamais remise à zéro à l’ouverture de la suivante : chaque nouvelle session démarrait déjà au-delà de son délai de grâce — coupée aussitôt, rappelée vingt secondes plus tard, recoupée, aussi longtemps que la radio dormait. « Silencieux depuis la connexion » se lit désormais pour ce que c’est : un poste en veille, dont on garde la session pour pouvoir le réveiller.",
+      "La console Icom s’affiche dès que la radio configurée est un Icom, et pas seulement quand le poste parle — c’est là que se trouve le bouton d’allumage, il manquait donc au seul moment où il servait. Le backend configuré suit aussi un changement de radio fait depuis la barre d’état, au lieu d’attendre un passage dans les réglages et un « Enregistrer » qui ne changeait rien.",
+      "Audio : le périphérique d’écoute signale désormais quand il ne peut pas s’ouvrir. Un périphérique débranché, renommé par Windows ou incapable de fonctionner en 16 kHz échouait en silence pendant que tout en amont annonçait le succès — flux ouvert, paquets reçus, moniteur démarré — ce qui est exactement le « j’ai remis le son et rien ne sort ». Le journal dit aussi, une fois, si l’audio réseau atteint les haut-parleurs ou arrive sans que personne n’écoute.",
+      "Export ADIF : un enregistrement tient de nouveau sur une ligne. ADDRESS est un champ multiligne selon la norme, et les callbooks comme les autres logiciels le remplissent ainsi — « Kabul », quatre lignes vides, « Afghanistan » — qu’OpsLog recopiait tel quel : un enregistrement s’étalait sur une douzaine de lignes, le suivant semblant commencer au milieu de la page. Les retours à la ligne dans une valeur sont désormais réunis par une virgule, ce qui est de toute façon la façon de lire une adresse sur une ligne. Les fichiers étaient valides (l’ADIF compte les octets) ; ils étaient illisibles.",
+      "Les envois vers Club Log ne sont plus refusés comme « non configuré ». Le contrôle ajouté pour les services sans identifiants réclamait une clé API Club Log que personne n’a jamais saisie — OpsLog embarque la sienne — et un opérateur dont l’envoi automatique fonctionnait depuis des mois se voyait éconduit au moment d’envoyer des QSO à la main. Les exigences de chaque service vivent désormais à côté du code qui les applique, et le message nomme les champs réellement manquants.",
+      "Carte FTx : l’indicatif, le locator et le report réapparaissent au survol. Le cercle invisible qui capte les clics est au-dessus du point, donc il capte aussi le survol — et l’étiquette n’était liée qu’au point du dessous, ce qui rendait la carte muette dès que les stations sont devenues cliquables."
+    ]
+  },
+  {
+    "version": "0.27.14",
+    "date": "",
+    "en": [
+      "[NEW] The mouse wheel steps the RST fields, in the entry strip and in the QSO editor. It counts the way an operator does — 57, 58, 59, 59+5, 59+10, 59+15, 59+20 — one S-unit up to nine and then five decibels at a time, and one decibel on a digital report. R and T do not move. The dropdown beside them lists the reports worth having to hand, not every legal one, so the wheel works on the value rather than walking the list.",
+      "[NEW] The world map opens centred on YOUR square, not on Greenwich. Centred on 0° it left an Australian looking at their own country in the bottom-right corner with every path running off both edges; centred on their own longitude the same map reads the way their antenna does — the Americas to the east, Europe and Africa to the west. The latitude leans towards your hemisphere without following you to the pole, and a view you have panned to yourself still wins.",
+      "The world map now waits for the station’s square before painting. It used to draw the world at 0° and then move to your longitude, fetching a screenful of tiles and discarding it on every first run; it is built once, knowing where it is looking. A profile with no locator still gets the default view after a moment rather than a blank panel.",
+      "[NEW] The FT decodes map and the grid-square map remember where you left them — centre and zoom, portable with the data folder like the world map’s own view. Panning a map is the operator saying which part of the world they are working, and it was being thrown away on every tab switch.",
+      "[NEW] FT map: the station dots answer the same two gestures as the decodes list — one click takes the callsign into the entry, two answer it. The hit area is wider than the dot, and a double click no longer zooms the map on its way through.",
+      "The auto-call readout moved out of the Auto button and beside it: the station being called is the biggest thing on the row, the calls and the missed periods each carry a label instead of reading as one number, and a station being waited for shows with an hourglass. The button had been changing width every period.",
+      "Auto-call: the rest between two series is counted in the station’s own overs, not in minutes, and is ONE by default. Two minutes is four overs on FT8 — by then the DX has worked four other callers and half the time it has gone. Seven calls, one over listened through, and it goes again if the station is still there (Settings → DXHunter, “Rest (overs)”).",
+      "Auto-call sees a decode that arrives after the others. A decoder sends a period in a burst and stragglers follow — a deep decode a second behind the rest — and the straggler was judged on its own, with the thirty stations of its own period nowhere in sight. The period now stays open until the next one starts, and a late arrival is weighed against all of it.",
+      "Auto-call: a period the station was decoded in is never counted as a miss. A period is judged more than once — the decodes arrive in a burst and stragglers follow — and a later judgement holds a partial view of it, not evidence of absence: a station answering in that very period showed “1/3 missed” against it.",
+      "Auto-call never parks a watched callsign. After a few series of unanswered calls a station is set aside for the session — the right answer for one the LOG picked out, the wrong one for a station YOU named: a DXpedition running a pileup takes more than two series to get through to, which is exactly why it is on the list. The rest between series still applies.",
+      "PSK Reporter panel: with the whole-band scope, clicking a decode no longer resets the report count to zero. The window there belongs to the BAND — every FTx report on it, filtered by target only when the analysis is drawn — and it was being emptied on every target change, throwing away an hour of evidence at the exact moment it was worth something. The narrow scope still clears it, because there the window is one station’s.",
+      "Changing mode with a callsign in the field now fixes the report. The “the operator chose this report” flag was holding across a change of mode, where it means nothing — “+00” is not a weak SSB report, it is not a report at all — and anything that fills the field from the rig (the S-meter readouts in the rig consoles) sets that flag too, so it could stay in the wrong notation for the whole QSO. A judgement that can be carried across is carried (57 → 579, 599 → 59); otherwise the mode’s preset answers.",
+      "Icom CI-V: address 00 can be set, and “Other (custom address)” stays chosen. Zero was treated as “not configured” and every save put the rig back to the IC-7610’s 98 — the model list following it, since it is derived from the address rather than stored.",
+      "Cloudlog / Wavelog upload: a simplex contact is no longer uploaded as split. Every QSO carried a receive band and frequency equal to the transmit side, and Wavelog draws both — an ordinary FT8 contact read “17m/17m”. In ADIF an absent BAND_RX means “same as transmit”, so they are now written only when they differ. The record forwarded to another logger on the UDP link still carries them in full (Log4OM reads BAND_RX).",
+      "Right-click → Send to: an upload to a service with no credentials is refused, and says which ones are missing and where. It used to run on its own and report into the QSL Manager’s console, which is not open when the command came from the QSO list — so it looked exactly like an upload that worked. Cloudlog / Wavelog and HamQTH also name themselves properly in the toast.",
+      "Cluster: “S/F” in a spot comment is read as FT8, alongside “superfox”, “sfox” and “F/H”. They are all the same DXpedition transmit mode, and the comment was falling through to the band plan and coming out DATA."
+    ],
+    "fr": [
+      "[NEW] La molette fait défiler les champs RST, dans la barre de saisie comme dans l’éditeur de QSO. Elle compte comme un opérateur — 57, 58, 59, 59+5, 59+10, 59+15, 59+20 — un point S jusqu’à neuf puis cinq décibels à la fois, et un décibel sur un report numérique. R et T ne bougent pas. La liste déroulante à côté contient les reports qu’on veut sous la main, pas tous les reports légaux : la molette agit donc sur la valeur plutôt que de parcourir la liste.",
+      "[NEW] La carte du monde s’ouvre centrée sur VOTRE locator, plus sur Greenwich. Centrée sur 0°, elle laissait un Australien avec son pays dans le coin en bas à droite et tous les trajets qui sortaient des deux bords ; centrée sur sa longitude, la même carte se lit comme son antenne travaille — les Amériques à l’est, l’Europe et l’Afrique à l’ouest. La latitude penche vers votre hémisphère sans vous suivre jusqu’au pôle, et une vue que vous avez déplacée vous-même reste prioritaire.",
+      "La carte du monde attend désormais le locator de la station avant de peindre. Elle dessinait le monde à 0° puis se déplaçait sur votre longitude, chargeant un écran de tuiles jeté aussitôt à chaque premier lancement ; elle est construite une fois, en sachant où elle regarde. Un profil sans locator obtient toujours la vue par défaut après un instant, pas un panneau vide.",
+      "[NEW] La carte des décodages FTx et la carte des locators retiennent où vous les avez laissées — centre et zoom, portables avec le dossier de données comme la vue de la carte du monde. Déplacer une carte, c’est dire quelle partie du monde on travaille, et c’était jeté à chaque changement d’onglet.",
+      "[NEW] Carte FTx : les points des stations répondent aux mêmes deux gestes que la liste des décodages — un clic met l’indicatif dans la saisie, deux l’appellent. La zone cliquable est plus large que le point, et un double clic ne zoome plus la carte au passage.",
+      "L’affichage de l’auto-call sort du bouton Auto pour se placer à côté : la station appelée est l’élément le plus lisible de la ligne, les appels et les périodes ratées portent chacun leur étiquette au lieu de se lire comme un seul nombre, et une station attendue s’affiche avec un sablier. Le bouton changeait de largeur à chaque période.",
+      "Auto-call : le repos entre deux séries se compte en tours de la station, plus en minutes, et vaut UN par défaut. Deux minutes, c’est quatre tours en FT8 — le DX a travaillé quatre autres appelants entre-temps, et la moitié du temps il est parti. Sept appels, un tour écouté, et ça repart si la station est toujours là (Réglages → DXHunter, « Repos (tours) »).",
+      "L’auto-call voit un décodage qui arrive après les autres. Un décodeur envoie une période en rafale, puis les retardataires — un décodage « deep » une seconde plus tard — et le retardataire était jugé tout seul, sans les trente stations de sa propre période. La période reste maintenant ouverte jusqu’au début de la suivante, et un arrivant tardif est pesé face à l’ensemble.",
+      "Auto-call : une période où la station a été décodée n’est plus comptée comme un raté. Une période est jugée plusieurs fois — les décodages arrivent en rafale puis les retardataires — et un jugement tardif n’en donne qu’une vue partielle, pas la preuve d’une absence : une station qui répondait dans cette période exacte se voyait compter « 1/3 raté ».",
+      "L’auto-call ne met jamais de côté un indicatif de la watchlist. Après quelques séries d’appels sans réponse, une station est écartée pour la session — la bonne réponse pour une station choisie par le CARNET, la mauvaise pour une station que VOUS avez nommée : un DX en pile-up demande plus de deux séries pour passer, et c’est précisément pour ça qu’il est sur la liste. Le repos entre séries s’applique toujours.",
+      "Panneau PSK Reporter : en portée « toute la bande », cliquer sur un décodage ne remet plus le nombre de reports à zéro. La fenêtre appartient là à la BANDE — tous les reports FTx qui y circulent, filtrés par cible seulement à l’affichage — et elle était vidée à chaque changement de cible, jetant une heure d’observations au moment précis où elles servent. La portée étroite continue de la vider : là, la fenêtre est celle d’une seule station.",
+      "Changer de mode avec un indicatif dans le champ corrige désormais le report. Le drapeau « l’opérateur a choisi ce report » tenait au travers d’un changement de mode, où il ne veut rien dire — « +00 » n’est pas un report SSB faible, ce n’est pas un report du tout — et tout ce qui remplit le champ depuis le poste (les lectures S-mètre des consoles) lève ce drapeau aussi : la notation pouvait rester fausse pour tout le QSO. Un jugement transposable l’est (57 → 579, 599 → 59) ; sinon le préréglage du mode répond.",
+      "Icom CI-V : l’adresse 00 peut être saisie, et « Other (custom address) » reste sélectionné. Le zéro était pris pour « non configuré » et chaque enregistrement remettait le poste sur le 98 de l’IC-7610 — la liste des modèles suivant, puisqu’elle est déduite de l’adresse et non enregistrée.",
+      "Upload Cloudlog / Wavelog : un contact simplex n’est plus envoyé comme un split. Chaque QSO portait une bande et une fréquence de réception égales à l’émission, et Wavelog affiche les deux — un FT8 ordinaire se lisait « 17m/17m ». En ADIF, un BAND_RX absent signifie « identique à l’émission » : ils ne sont donc écrits que s’ils diffèrent. L’enregistrement transmis à un autre logiciel par UDP les porte toujours en entier (Log4OM lit BAND_RX).",
+      "Clic droit → Envoyer vers : un envoi vers un service non configuré est refusé, en disant ce qui manque et où. Il partait tout seul et rendait compte dans la console du gestionnaire QSL, qui n’est pas ouverte quand la commande vient de la liste des QSO — ça ressemblait donc exactement à un envoi réussi. Cloudlog / Wavelog et HamQTH s’annoncent aussi sous leur nom dans le message.",
+      "Cluster : « S/F » dans un commentaire de spot est lu comme du FT8, au même titre que « superfox », « sfox » et « F/H ». C’est le même mode d’émission DXpédition, et le commentaire retombait sur le plan de bande pour ressortir en DATA."
+    ]
+  },
+  {
+    "version": "0.27.13",
+    "date": "",
+    "en": [
+      "[NEW] Rotor widget redrawn: a night world map behind a square azimuth scale, an orange pointer following the mouse so a click lands where it is aimed, a yellow marker on the azimuth ordered until the antenna gets there, and quick turns in columns of six. The Ultrabeam boom and its second lobe are still drawn, and Station Control keeps the plain dial — dial only, since anything under it is pushed off the bottom of the row. Design contributed by EC1KD — thank you.",
+      "[NEW] Settings → Rotator now chooses the dial: the new world-map compass or the classic one. Both are kept — one reads across the shack, the other is the compact dial that was there before — and the choice applies to the docked widget and to Station Control at once.",
+      "Rotor widget: the Stop button no longer flickers on a rotor standing still. Movement was inferred from a one-degree change, which is less than the jitter a controller reports at rest.",
+      "[NEW] A docked watch-list panel, showing only what is ON THE AIR and still needed — one line per band and mode — callsign, band, mode, what it is worth, how long ago — freshest first, click to tune, with the cluster’s own NEW DXCC / NEW BAND / NEW SLOT badge on each row. The Watchlist tab is a tab, and an operator working FT8 lives on the decodes one: a station you asked to be told about was appearing on a screen you were not looking at. Turn it on with the bell in the toolbar.",
+      "[NEW] FT decodes: a distance column, next to the square it is computed from and in your own unit (km or miles). Rounded to whole units — a four-character grid is a square tens of kilometres wide and nothing finer is honest.",
+      "[NEW] The PSK Reporter panel switches to the station auto-call is WAITING for (the hourglass), while nothing is being called. Its analysis takes a history query and a period or two of live reports to fill, so starting it when the DX finally comes free is starting it too late — the wait is exactly what it should be spent on.",
+      "[NEW] Chase new: a band selection of its own, under the option (160 m to 70 cm). The station’s band list still applies underneath — this one says what is worth WATCHING tonight.",
+      "Chase new: the panel says what the feed is doing — up or down, how many reports it has taken, how many receiver squares it is subscribed to. An empty list said nothing about whether anything was arriving at all.",
+      "FT decodes: a receiver column appears when more than one decoder feeds the merged list, and the list empties for a receiver that changes band — half a screen of stations no longer reachable is worse than an empty one.",
+      "FT decodes: a pink WL badge marks a station on your watch list, and the period clock turns red while transmitting. It is the one thing on the screen that moves, so “am I on the air” is readable from across the room.",
+      "FT decodes: a message addressed to YOU is set in green, whole and bold, with a green edge on the row — read from the far side of the shack. The station you are calling keeps a light tint and its callsign picked out in red: most of what it sends goes to other people, and colouring those lines the same way said you were in a QSO you were not in.",
+      "Cluster: “superfox”, “super fox”, “fox/hound” and “F/H” in a spot comment are read as FT8. They are WSJT-X’s DXpedition transmit modes, not modes of their own, and the comment fell through to the band’s default.",
+      "Auto-call: what it calls, and in what order. It answers only what the decodes list is SHOWING — the filters above it (CQ only, LoTW only, the category chips, continents, minimum report, search) now steer the transmitter as well as the eye, and the separate “LoTW users only” option is gone. A new prefix, county, state, square or park is worth a call too, at the foot of the ladder and only for the kinds you chase (Settings → DX Cluster). A watched callsign outranks everything not on the list, a real need beats an unconfirmed one at the same level, and a better station may take over from one that has not answered yet — never from a QSO in progress.",
+      "Auto-call: it calls THROUGH a pileup. It used to give up the moment the station it was calling answered somebody else — which is precisely how a DX with a queue behaves, and the only way to be the next one is to keep calling while it works the others. Still bounded by the call and miss counters, and a station in mid-exchange is still never CHOSEN as a new target.",
+      "Auto-call: safety and control. It is always OFF at launch and after a profile switch, never armed from a stored setting — it is the one feature that puts the station on the air by itself, and OpsLog starts with Windows. Halt is now a verdict: the station is set aside for the session and never called again until auto-call is switched off and on. It says what it is waiting for, showing a wanted station that is working somebody else next to the Auto button. And it can log every decision (Settings → DXHunter): one line per period saying what was on the air and why each station was refused.",
+      "Auto-call: a round of fixes from on-air use. It no longer cuts your own 73 short, calls four to six seconds late, starts a call and drops it a second later, ignores a station calling you, misreads MSHV’s two-answers-in-one-line, refuses nearly everything on the air because it read the entity’s “worked” as the station’s, or opens with two misses already counted against a station it has only just picked.",
+      "Switching profile no longer leaves the previous logbook’s verdicts on the screen. Coming back from a profile with an empty log, every decode and spot stayed badged NEW until a restart: the worked-index, the chase-new list and the cached verdicts are now all dropped when the logbook changes.",
+      "Chase new fixes: the header counts both what the filters show and what the panel holds (“3 of 12 heard”), a stored filter set that hides everything is ignored, and switching between “new” and “new + unconfirmed” re-reads the list instead of leaving old verdicts on screen.",
+      "PSK Reporter panel fixes: the history is asked for in both feed scopes and refreshed every five minutes, so a target picked shortly after start-up no longer shows an empty page; the suggested transmit offset always has an answer when there is data; and the texts say ten minutes, which is the window actually used.",
+      "Callbook lookup: a compound callsign with a page of its OWN keeps that page’s location. HP/WE9G is filed on QRZ under exactly that form, with the Panama address and square the station is operating from, and OpsLog was throwing it away — the rule that drops a home address from a portable call was applying to pages that describe the operation itself. The record’s own country tells the two apart. Cached lookups heal on the next read; QSOs already logged without a grid keep it empty."
+    ],
+    "fr": [
+      "[NEW] Widget rotor redessiné : carte du monde nocturne derrière une échelle d’azimut carrée, aiguille orange qui suit la souris pour qu’un clic parte où on vise, repère jaune sur l’azimut demandé jusqu’à l’arrivée de l’antenne, et directions rapides en colonnes de six. Le boom Ultrabeam et son deuxième lobe sont toujours tracés, et Station Control garde le cadran seul — rien en dessous, ce qui y était se retrouvait coupé en bas de la rangée. Design proposé par EC1KD — merci à lui.",
+      "[NEW] Réglages → Rotator permet de choisir le cadran : la nouvelle boussole carte du monde ou le cadran classique. Les deux sont conservés — l’un se lit de loin, l’autre est le cadran compact d’avant — et le choix s’applique aussitôt au widget docké comme à Station Control.",
+      "Widget rotor : le bouton Stop ne clignote plus sur un rotor à l’arrêt. Le mouvement était déduit d’un changement d’un degré, soit moins que le tremblement de lecture d’un contrôleur au repos.",
+      "[NEW] Un panneau watchlist docké, qui ne montre que ce qui est EN L’AIR et manque encore — une ligne par bande et mode — indicatif, bande, mode, ce que ça vaut, il y a combien de temps — le plus frais en haut, clic pour s’y caler, avec le badge NEW DXCC / NEW BAND / NEW SLOT du cluster sur chaque ligne. L’onglet Watchlist est un onglet, et en FT8 on vit sur celui des décodes : une station qu’on avait demandé à surveiller apparaissait sur un écran qu’on ne regardait pas. À activer avec la cloche dans la barre d’outils.",
+      "[NEW] FT decodes : une colonne distance, à côté du locator dont elle est calculée et dans votre unité (km ou miles). Arrondie à l’unité — un locator à quatre caractères est un carré de plusieurs dizaines de kilomètres, rien de plus fin ne serait honnête.",
+      "[NEW] Le panneau PSK Reporter bascule sur la station que l’auto-call ATTEND (le sablier), tant que rien n’est appelé. Son analyse met une requête d’historique et une période ou deux à se remplir : la lancer quand le DX se libère enfin, c’est la lancer trop tard — l’attente sert précisément à ça.",
+      "[NEW] Chase new : sélection de bandes propre au panneau, sous l’option (160 m à 70 cm). La liste de bandes de la station s’applique toujours en dessous — celle-ci dit ce qu’on veut SURVEILLER ce soir.",
+      "Chase new : le panneau indique l’état du flux — connecté ou non, nombre de rapports reçus, nombre de carrés de réception souscrits. Une liste vide ne disait rien sur ce qui arrivait vraiment.",
+      "FT decodes : une colonne récepteur apparaît quand plusieurs décodeurs alimentent la liste fusionnée, et la liste se vide pour un récepteur qui change de bande — un demi-écran de stations devenues inaccessibles est pire qu’un écran vide.",
+      "FT decodes : un badge WL rose marque une station de votre watchlist, et l’horloge de période passe au rouge en émission. C’est le seul élément qui bouge à l’écran, donc « suis-je en émission » se lit de loin.",
+      "FT decodes : un message qui VOUS est adressé s’affiche en vert, en entier et en gras, avec un liseré vert sur la ligne — lisible de l’autre bout du shack. La station que vous appelez garde une teinte légère et son indicatif en rouge : l’essentiel de ce qu’elle émet s’adresse à d’autres, et colorer ces lignes pareil laissait croire à un QSO en cours.",
+      "Cluster : « superfox », « super fox », « fox/hound » et « F/H » dans un commentaire de spot sont lus comme du FT8. Ce sont les modes d’émission DXpédition de WSJT-X, pas des modes en soi, et le commentaire retombait sur le mode par défaut de la bande.",
+      "Auto-call : ce qu’il appelle, et dans quel ordre. Il ne répond qu’à ce que la liste des décodes AFFICHE — les filtres du dessus (CQ seul, LoTW seul, les pastilles de catégorie, les continents, le rapport minimum, la recherche) pilotent désormais l’émission autant que l’œil, et l’option distincte « utilisateurs LoTW uniquement » disparaît. Un nouveau préfixe, comté, état, locator ou parc vaut aussi un appel, au dernier barreau de l’échelle et seulement pour ce que vous chassez (Réglages → DX Cluster). Un indicatif en watchlist passe devant tout ce qui n’y est pas, un vrai besoin devant un besoin non confirmé de même niveau, et une meilleure station peut prendre la place d’une autre qui n’a pas encore répondu — jamais celle d’un QSO en cours.",
+      "Auto-call : il appelle À TRAVERS un pile-up. Il abandonnait dès que la station appelée répondait à quelqu’un d’autre — or c’est exactement ce que fait un DX avec une file, et le seul moyen d’être le suivant est de continuer à appeler pendant qu’il travaille les autres. Toujours borné par les compteurs d’appels et de ratés, et une station en plein échange n’est toujours jamais CHOISIE comme nouvelle cible.",
+      "Auto-call : sécurité et contrôle. Il est toujours ARRÊTÉ au lancement et après un changement de profil, jamais armé depuis un réglage enregistré — c’est la seule fonction qui met la station en émission toute seule, et OpsLog démarre avec Windows. Halt devient un verdict : la station est mise de côté pour la session et n’est plus appelée jusqu’à ce que l’auto-call soit désactivé puis réactivé. Il dit ce qu’il attend, en affichant à côté du bouton Auto la station voulue qui travaille quelqu’un d’autre. Et il peut journaliser chaque décision (Réglages → DXHunter) : une ligne par période disant ce qui était sur l’air et pourquoi chaque station a été refusée.",
+      "Auto-call : série de corrections issues du trafic. Il ne coupe plus votre 73, n’appelle plus avec quatre à six secondes de retard, ne lance plus un appel pour le couper une seconde après, ne laisse plus sans réponse une station qui vous appelle, lit correctement les doubles réponses MSHV sur une même ligne, ne refuse plus presque tout ce qui passe parce qu’il prenait le « worked » de l’entité pour celui de la station, et ne démarre plus avec deux ratés au compteur sur une station tout juste choisie.",
+      "Changer de profil ne laisse plus les verdicts du carnet précédent à l’écran. En revenant d’un profil au log vide, tous les décodes et spots restaient marqués NEW jusqu’au redémarrage : l’index des contacts, la liste chase new et les verdicts en cache sont désormais vidés au changement de carnet.",
+      "Chase new, corrections : l’en-tête compte à la fois ce que les filtres montrent et ce que le panneau contient (« 3 sur 12 entendues »), un jeu de filtres enregistré qui cache tout est ignoré, et le passage entre « new » et « new + non confirmés » relit la liste au lieu de laisser d’anciens verdicts à l’écran.",
+      "Panneau PSK Reporter, corrections : l’historique est demandé dans les deux portées du flux et rafraîchi toutes les cinq minutes, donc une cible choisie peu après le démarrage n’affiche plus une page vide ; l’offset d’émission suggéré donne toujours une réponse quand il y a des données ; et les textes annoncent dix minutes, la fenêtre réellement utilisée.",
+      "Recherche callbook : un indicatif composé qui a sa PROPRE fiche garde la position de cette fiche. HP/WE9G est déposé sur QRZ sous cette forme exacte, avec l’adresse et le locator du Panama d’où la station émet, et OpsLog les jetait — la règle qui écarte l’adresse personnelle d’un indicatif portable s’appliquait aussi aux fiches qui décrivent l’opération elle-même. C’est le pays de la fiche qui les distingue. Les fiches en cache se corrigent à la lecture suivante ; les QSO déjà enregistrés sans locator le restent."
+    ]
+  },
+  {
+    "version": "0.27.12",
+    "date": "",
+    "en": [
+      "Help menu: “Join the Discord” opens the OpsLog Discord server in your browser.",
+      "Icom console: a tick box makes the band buttons recall the radio's own band stacking registers — where you last were on that band, in the mode you were in. Press the same band again to step through its three registers, exactly as the radio's band key does. A band the register cannot be read for still sends the fixed frequency.",
+      "Shared CAT: a frequency or mode just commanded is reported back at once instead of on the next poll, and a mode the radio is already in is no longer re-sent. WSJT-X waits for that readback before it believes the band changed — over a network CI-V link that wait was several seconds.",
+      "Chase new / band openings: the receiver radius goes up to 3000 km, and the PSK Reporter subscription now follows it. Widening the circle used to change nothing, because the reports it would have accepted were never sent to us. 300 km holds no receivers at all in much of VK, ZL or North America.",
+      "The radius is also reachable from the Chase new option itself, rather than only from inside the band-opening watch.",
+      "New PSK Reporter panel beside the FT decodes, which can be hidden: for the station you are calling, has he decoded YOU and how long ago, who near you he is hearing, who near him heard you, how many stations he is working through, and where his receive passband is free. Follows the station you click or call. Off by default — Settings → DXHunter/spots. The narrow feed is a few messages a second; a whole-band option is there for a fast machine.",
+      "FT Map: the arcs no longer run off the side of the map. The map shows one world, and a path crossing the antimeridian was drawn past 180° into the blank space beside it — from VK or ZL that is most of them, each one ending nowhere while its own marker sat on the far coast. A path now leaves one edge and re-enters at the other, at the latitude it left.",
+      "NEW — Auto-call: OpsLog can answer FT8/FT4 decodes on its own. It picks the best station on the air by what the log still needs — a watched callsign outranking the same need from anybody else — and, above all, it knows when to stop: 7 calls (15 for a watched callsign), 3 of the station’s own transmit periods with no decode of it, a four-minute backstop, and three series per station for a whole session. A station in the middle of a QSO with somebody else is never called, because it cannot answer. Every decision is written to the log with its reason, the toolbar button shows the target and the count as it goes, and Halt stops it. OFF by default — Settings → DXHunter/spots. It keys your transmitter without asking, so read that panel’s warning before switching it on, and switch DXHunter’s own auto-call off: two programs answering decodes from one shack transmit over each other.",
+      "PSK Reporter panel: the window is ten minutes, and the history query now fills BOTH directions when the target changes. Side by side with DXHunter on the same station at the same moment it showed 18 decodes against 27, and a co-area station missing — five minutes catches about one upload cycle per reporting station, and most of them report every five.",
+      "Auto-call: “Chase only” takes SEVERAL callsigns, separated by spaces or commas. Nothing off the list is called, the priority ladder still orders the ones on it, and working one leaves the others callable.",
+      "Two new themes on DXHunter’s palette: “DXHunter”, its slate and its blue exactly, and “DXHunter orange”, the same slate with OpsLog’s own orange accent. Both carry its status colours (emerald, amber, cyan, red), so a green number means the same thing in either window. Settings → General → Theme.",
+      "The auto-call chase list is also in the decodes toolbar, beside the Auto button: naming the station you are waiting for is done while watching the band, not in a settings tree. It is the same setting as the one in Preferences — type into either and both show it.",
+      "FT decodes: one click SELECTS a station — it fills the entry and points the panels at it, like a cluster spot — and a double click calls it. A single click used to hand the decode straight to WSJT-X as a reply, so brushing a row while reading the band started transmitting.",
+      "Auto-call with two decoders running: while a station is being called, a period from the other receiver is not looked at. It cannot start a second QSO over the one in progress however good the station it hears, its periods count no missed periods against a target that was never on its band, and its transmissions are not counted as calls to that target.",
+      "Watchlist: drawn as DXHunter draws it — the callsign in the interface font rather than monospaced (the difference that shows with the two windows side by side), badges at its size, a check or a warning triangle at the head of each spot line, and frequencies as 7.056 rather than 7.0560.",
+      "A decoder is named by what it IS, not by what it announces: Nexus sends its packets as “Tempo”, the engine inside it, and OpsLog showed a program the operator had never heard of. The id itself is untouched — it is what a reply, a halt and the auto-call are routed by.",
+      "WSJT-X colouring can grey out a station already worked on this band AND in this mode — the duplicate. Its own switch under the highlight option, off by default: the other three verdicts pick out a handful of decodes, this one can match most of a period on a well-filled log. Grey rather than a colour, because it says the opposite of the others.",
+      "Contest watchlist (Settings → DXHunter): beside the auto-add pattern there is now a list of callsigns, one per line. A pattern collects a fleet that shares a string — TM29WWA, HB9WWA, F4WWA/P — but not the station taking part under a callsign that says nothing about the event. Named in the list, it joins the contest watchlist the moment it is spotted."
+    ],
+    "fr": [
+      "Menu Aide : « Rejoindre le Discord » ouvre le serveur Discord d’OpsLog dans votre navigateur.",
+      "Console Icom : une case à cocher fait rappeler aux boutons de bande les registres de bande de la radio — là où vous étiez la dernière fois sur cette bande, dans le mode où vous étiez. Réappuyez sur la même bande pour parcourir ses trois registres, comme le fait la touche de bande du poste. Une bande dont le registre est illisible envoie toujours la fréquence fixe.",
+      "CAT partagé : une fréquence ou un mode qu’on vient de commander est renvoyé immédiatement, sans attendre le sondage suivant, et un mode que la radio a déjà n’est plus réémis. WSJT-X attend cette relecture avant de croire au changement de bande — sur une liaison CI-V réseau, cette attente durait plusieurs secondes.",
+      "Chase new / ouvertures : le rayon des récepteurs monte à 3000 km, et l’abonnement PSK Reporter le suit désormais. Élargir le cercle ne changeait rien, car les reports qu’il aurait acceptés ne nous étaient jamais envoyés. 300 km ne contient aucun récepteur dans une bonne partie de VK, ZL ou d’Amérique du Nord.",
+      "Ce rayon est aussi accessible depuis l’option Chase new elle-même, et non plus seulement depuis la veille d’ouvertures.",
+      "Nouveau panneau PSK Reporter à côté des décodages FTx, masquable : pour la station que vous appelez, vous a-t-il décodé et depuis combien de temps, qui entend-il près de chez vous, qui près de lui vous a entendu, combien de stations défilent chez lui, et où son passe-bande est libre. Il suit la station que vous cliquez ou appelez. Désactivé par défaut — Réglages → DXHunter/spots. Le flux étroit ne coûte que quelques messages par seconde ; une option « toute la bande » existe pour une machine rapide.",
+      "FT Map : les arcs ne partent plus hors de la carte. La carte n’affiche qu’un seul monde, et un chemin franchissant l’antiméridien était tracé au-delà de 180°, dans le vide à côté — depuis VK ou ZL c’est la majorité d’entre eux, chacun finissant nulle part alors que son propre marqueur était sur la côte opposée. Un chemin sort désormais par un bord et revient par l’autre, à la latitude où il est sorti.",
+      "NOUVEAU — Appel automatique : OpsLog peut répondre seul aux décodages FT8/FT4. Il choisit la meilleure station en fonction de ce qui manque au log — un indicatif surveillé passant devant le même besoin chez un autre — et surtout il sait s’arrêter : 7 appels (15 pour un indicatif surveillé), 3 périodes d’émission de la station sans la décoder, un butoir de quatre minutes, et trois séries par station pour toute une session. Une station en plein QSO avec quelqu’un d’autre n’est jamais appelée : elle ne peut pas répondre. Chaque décision est écrite dans le journal avec sa raison, le bouton de la barre affiche la cible et le décompte en direct, et Stop l’interrompt. DÉSACTIVÉ par défaut — Réglages → DXHunter/spots. Il met votre émetteur en marche sans vous demander : lisez l’avertissement du panneau avant de l’activer, et coupez l’appel automatique de DXHunter — deux programmes qui répondent aux décodages du même shack s’émettent dessus.",
+      "Panneau PSK Reporter : la fenêtre passe à dix minutes, et la requête d’historique remplit désormais les DEUX sens au changement de cible. Côte à côte avec DXHunter sur la même station au même instant, il affichait 18 décodages contre 27, et une station de la région manquait — cinq minutes ne captent qu’un cycle d’envoi par station, et la plupart n’envoient que toutes les cinq minutes.",
+      "Appel automatique : « Chasser uniquement » accepte PLUSIEURS indicatifs, séparés par des espaces ou des virgules. Rien hors de la liste n’est appelé, l’échelle de priorité départage ceux qui y sont, et en travailler un laisse les autres appelables.",
+      "Deux nouveaux thèmes sur la palette de DXHunter : « DXHunter », son ardoise et son bleu à l’identique, et « DXHunter orange », la même ardoise avec l’orange d’OpsLog. Les deux reprennent ses couleurs d’état (émeraude, ambre, cyan, rouge) : un nombre vert veut dire la même chose dans les deux fenêtres. Réglages → Général → Thème.",
+      "La liste de chasse de l’appel automatique est aussi dans la barre des décodages, à côté du bouton Auto : nommer la station qu’on attend se fait en regardant la bande, pas dans un arbre de réglages. C’est le même réglage que dans les Préférences — saisi dans l’un, il apparaît dans l’autre.",
+      "Décodages FT : un clic SÉLECTIONNE une station — il remplit la saisie et y pointe les panneaux, comme un spot du cluster — et un double-clic l’appelle. Un simple clic passait le décodage directement à WSJT-X en réponse : frôler une ligne en lisant la bande déclenchait une émission.",
+      "Appel automatique avec deux décodeurs : pendant qu’une station est appelée, une période de l’autre récepteur n’est pas examinée. Il ne peut pas ouvrir un second QSO par-dessus celui en cours, si bonne que soit la station qu’il entend ; ses périodes ne comptent aucune période manquée contre une cible qui n’a jamais été sur sa bande, et ses émissions ne comptent pas comme des appels vers elle.",
+      "Watchlist : dessinée comme DXHunter la dessine — l’indicatif dans la police de l’interface plutôt qu’en chasse fixe (la différence qui saute aux yeux avec les deux fenêtres côte à côte), pastilles à sa taille, coche ou triangle d’alerte en tête de chaque ligne de spot, et fréquences en 7.056 plutôt que 7.0560.",
+      "Un décodeur est nommé par ce qu’il EST, non par ce qu’il annonce : Nexus envoie ses paquets sous le nom « Tempo », le moteur qu’il embarque, et OpsLog affichait un programme inconnu de l’opérateur. L’identifiant lui-même n’est pas touché : c’est par lui que passent une réponse, un Stop et l’appel automatique.",
+      "Coloration WSJT-X : possibilité de griser une station déjà travaillée sur cette bande ET dans ce mode — le doublon. Sa propre case sous l’option de coloration, désactivée par défaut : les trois autres verdicts désignent quelques décodages, celui-ci peut concerner la majorité d’une période sur un log bien rempli. En gris et non en couleur, car il dit l’inverse des autres.",
+      "Watchlist contest (Réglages → DXHunter) : à côté du motif d’ajout automatique, une liste d’indicatifs, un par ligne. Un motif attrape une flotte qui partage une chaîne — TM29WWA, HB9WWA, F4WWA/P — mais pas la station engagée sous un indicatif qui ne dit rien de l’événement. Nommée dans la liste, elle rejoint la watchlist contest dès qu’elle est spottée."
+    ]
+  },
+  {
+    "version": "0.27.11",
+    "date": "",
+    "en": [
+      "Country resolution with the ClubLog file enabled: retired prefixes are recognised again. cty.dat describes the world as it is TODAY — Niue moved to E6, so ZK2 reverted to New Zealand there, and every ZK2 contact ever made was silently relabelled New Zealand, taking a confirmed entity out of the operator’s DXCC with it. ZK1 lost the Cook Islands the same way. ClubLog’s prefix table still knows both and is now consulted whenever no per-callsign exception applies, instead of only for callsigns that happened to have one. It never overrules an exact “=CALLSIGN” entry in cty.dat, and where it has no answer cty.dat still decides. Reprocess an affected import with Update from ClubLog.",
+      "CQ and ITU zones now come from the callbook when it has them. cty.dat carries ONE representative pair per entity, and OpsLog was stamping it over QRZ.com’s per-station answer — so every Asiatic Russia contact was logged CQ 17 / ITU 30, whatever the operator’s real zone (RU0LL is 19/34, UA0SDX 18/32). That is a WAZ credit for a zone never worked. The entity still comes from cty.dat, which is the authority on what a callsign IS; a zone says where the station SITS, and only the callbook knows that within a country eight CQ zones wide. Where the callbook is silent, cty.dat fills as before.",
+      "Callsign cache: a lookup is now stored as the callbook returned it, and the country file is applied when it is read. A value OpsLog derived can no longer come back later looking like something the page said — which is how the wrong zones outlived their fix — and a country-file update now reaches rows already cached.",
+      "“Send to Cloudlog / Wavelog” joins the right-click upload menu. It was the one configured service missing from it: Cloudlog keeps no per-QSO sent status — deliberately, since it dedupes server-side — and the menu had been built around that status. An explicit selection needs no status to be safe, which is exactly why the absence stops mattering here.",
+      "HAMLOG.online uploads are closed. The site no longer issues API keys and its upload API takes nothing else, so the auto-upload switch and the “Send to” entry armed something that could only fail. Everything else stays: their confirmations still import from a file (which never needed a key), and the sent/received state already in your log remains readable, filterable and bulk-editable. The upload code is kept whole against the day keys come back.",
+      "Yaesu console: the power slider no longer springs back to 100 W on a 200 W radio. The console already knew an FTDX101MP could do 200 — that is what it drew the slider to — but the command that sets it was clamped to 100, so the rig was politely given half of what was asked for and the next poll showed it. FTDX101MP, FT-DX5000 and FTDX9000 reach 200 W now, and a rig reporting more than expected is still believed.",
+      "Chase new: clicking a row now does what clicking a cluster spot does — including telling WSJT-X, JTDX or MSHV to change mode, so picking an FT4 station while the decoder sits in FT8 actually moves it. It also brings across the mode and its RST preset, and any park or summit reference. It used to do a hand-picked half of that, which left the one thing the window exists for — jumping onto a station — decoding the wrong mode.",
+      "FT decodes: JTDX on FT4 no longer reads as Q65. A decode carries a one-character mode marker, and the two programs disagree about “:” — Q65 in WSJT-X, FT4 in JTDX — so the character alone cannot answer, and the wrong answer poisoned every verdict behind it: new mode, new slot, the mode filter. The sending program’s own status names the mode in full and now settles it; the markers both forks agree on are untouched."
+    ],
+    "fr": [
+      "Résolution des entités avec le fichier ClubLog activé : les préfixes retirés sont de nouveau reconnus. cty.dat décrit le monde tel qu’il est AUJOURD’HUI — Niue est passée en E6, donc ZK2 y est revenu à la Nouvelle-Zélande, et tous les contacts ZK2 jamais faits étaient silencieusement réétiquetés Nouvelle-Zélande, emportant une entité confirmée hors du DXCC de l’opérateur. ZK1 perdait les Cook du Sud de la même façon. La table de préfixes ClubLog connaît toujours les deux : elle est désormais consultée dès qu’aucune exception par indicatif ne s’applique, et non plus seulement pour les indicatifs qui en avaient une. Elle ne prime jamais sur une entrée exacte « =INDICATIF » de cty.dat, et là où elle n’a pas de réponse c’est cty.dat qui tranche. Repassez un import concerné par « Mettre à jour depuis ClubLog ».",
+      "Les zones CQ et ITU proviennent désormais du callbook quand il les connaît. cty.dat ne porte QU’UNE paire représentative par entité, et OpsLog l’imposait par-dessus la réponse par station de QRZ.com — tout contact avec la Russie asiatique était donc enregistré en CQ 17 / ITU 30, quelle que soit la zone réelle (RU0LL est en 19/34, UA0SDX en 18/32). C’est un crédit WAZ pour une zone jamais travaillée. L’entité vient toujours de cty.dat, qui fait autorité sur ce qu’un indicatif EST ; une zone dit où la station SE TROUVE, et seul le callbook le sait dans un pays large de huit zones CQ. Là où le callbook se tait, cty.dat comble comme avant.",
+      "Cache des indicatifs : une recherche est désormais stockée telle que le callbook l’a rendue, le fichier pays étant appliqué à la lecture. Une valeur déduite par OpsLog ne peut plus revenir plus tard avec l’apparence de ce qu’a dit la page — c’est ainsi que les mauvaises zones survivaient à leur correctif — et une mise à jour du fichier pays atteint maintenant les fiches déjà en cache.",
+      "« Envoyer vers Cloudlog / Wavelog » rejoint le menu d’envoi du clic droit. C’était le seul service configuré qui y manquait : Cloudlog ne conserve aucun statut d’envoi par QSO — volontairement, puisqu’il dédoublonne côté serveur — et le menu était construit autour de ce statut. Une sélection explicite n’a besoin d’aucun statut pour être sûre : c’est précisément pourquoi cette absence cesse de compter ici.",
+      "Les envois vers HAMLOG.online sont fermés. Le site ne délivre plus de clé API et son interface d’envoi n’accepte rien d’autre : la case d’envoi automatique et l’entrée « Envoyer vers » armaient donc quelque chose qui ne pouvait qu’échouer. Tout le reste demeure : leurs confirmations s’importent toujours depuis un fichier (ce qui n’a jamais demandé de clé), et l’état envoyé/reçu déjà présent dans votre log reste lisible, filtrable et modifiable en masse. Le code d’envoi est conservé intact pour le jour où les clés reviendraient.",
+      "Console Yaesu : le curseur de puissance ne revient plus à 100 W sur une radio de 200 W. La console savait déjà qu’un FTDX101MP peut sortir 200 — c’est à cela qu’elle dimensionnait son curseur — mais la commande d’envoi était bornée à 100 : le poste recevait donc poliment la moitié de ce qu’on lui demandait, et le sondage suivant l’affichait. FTDX101MP, FT-DX5000 et FTDX9000 atteignent désormais 200 W, et une radio qui annonce plus que prévu reste crue sur parole.",
+      "Chase new : cliquer une ligne fait désormais ce que fait un clic sur un spot du cluster — y compris demander à WSJT-X, JTDX ou MSHV de changer de mode, si bien que choisir une station FT4 alors que le décodeur est en FT8 l’y amène vraiment. Le mode et son RST par défaut suivent aussi, de même que toute référence de parc ou de sommet. La fenêtre n’en faisait qu’une moitié choisie à la main, ce qui laissait la seule chose pour laquelle elle existe — sauter sur une station — décoder dans le mauvais mode.",
+      "FT decodes : JTDX en FT4 ne s’affiche plus en Q65. Un décodage porte un marqueur de mode d’un seul caractère, et les deux logiciels ne s’accordent pas sur « : » — Q65 pour WSJT-X, FT4 pour JTDX : le caractère seul ne peut donc pas trancher, et sa mauvaise réponse contaminait tout ce qui en découle — nouveau mode, nouveau slot, filtre de mode. Le statut envoyé par le logiciel lui-même nomme le mode en entier et tranche désormais ; les marqueurs sur lesquels les deux s’accordent ne changent pas."
+    ]
+  },
+  {
+    "version": "0.27.10",
+    "date": "",
+    "en": [
+      "Widget order (Settings → Appearance): the row to the right of the entry can be rearranged by dragging — the whole row is the handle, and a line shows where it will land. QSO entry and the F1-F5 panel head the list, locked — they are not part of that row and nothing should be allowed to push what you type into behind a rotator dial. A widget you have switched off keeps its place and comes back where you left it, and the main view follows as you drag.",
+      "Rotator, GS-232 over a serial port: the port is opened once and kept, instead of being reopened for every command. An Arduino-based controller — K3NG’s firmware, the ERC family — RESETS when its serial port is opened, so OpsLog was rebooting it several times a second and every command landed in the bootloader: a controller that answered a terminal perfectly reported “no reply to C” here. A freshly opened port is now left to boot before the first command, stale bytes from a previous exchange are discarded, and a failed exchange releases the port so the next one starts clean."
+    ],
+    "fr": [
+      "Ordre des widgets (Réglages → Apparence) : la rangée à droite de la saisie se réorganise par glisser-déposer — toute la ligne se saisit, et un trait montre où elle atterrira. La saisie du QSO et le panneau F1-F5 ouvrent la liste, verrouillés — ils ne font pas partie de cette rangée, et rien ne doit pouvoir repousser ce dans quoi vous tapez derrière une boussole de rotor. Un widget désactivé garde sa place et revient là où vous l’aviez laissé, et la vue principale suit pendant que vous glissez.",
+      "Rotor, GS-232 sur port série : le port est ouvert une fois et conservé, au lieu d’être rouvert à chaque commande. Un contrôleur à base d’Arduino — le firmware K3NG, la famille ERC — REDÉMARRE à l’ouverture de son port série : OpsLog le redémarrait donc plusieurs fois par seconde et chaque commande tombait dans le bootloader. Un contrôleur qui répondait parfaitement à un terminal annonçait ici « no reply to C ». Un port fraîchement ouvert a désormais le temps de démarrer avant la première commande, les octets résiduels d’un échange précédent sont écartés, et un échange en échec libère le port pour que le suivant reparte propre."
+    ]
+  },
+  {
+    "version": "0.27.9",
+    "date": "",
+    "en": [
+      "FT decodes warn when the decoding application announces a band the radio is not on — the signature of a lost CAT link, where it repeats the last frequency it knew and every decode after that carries a stale band. Nothing downstream could tell, so NEW BAND was being judged against a band the operator had left. OpsLog says it rather than deciding: a second receiver on another band is a real setup, and it costs that one only a line to read past.",
+      "Voice keyer with CAT keying: an option saying the keyer’s audio arrives on the radio’s DATA / USB input rather than the microphone socket. A Kenwood TS-590 has two transmit commands — TX opens the front mic, TX1 the rear ACC2/USB — so a keyer playing through the rig’s own sound card was transmitting dead air while the radio listened to a microphone nobody was speaking into. Shown on the Kenwood backend only — no other radio family draws the distinction — and the Test PTT button exercises the same path."
+    ],
+    "fr": [
+      "Les FT decodes signalent quand le logiciel de décodage annonce une bande sur laquelle la radio n’est pas — la signature d’une liaison CAT perdue, où il répète la dernière fréquence connue et où tous les décodages suivants portent une bande périmée. Rien en aval ne pouvait s’en apercevoir : NOUVELLE BANDE était donc jugé sur une bande quittée. OpsLog le dit sans décider à votre place : un second récepteur sur une autre bande est une configuration légitime, et il ne lui en coûte qu’une ligne à ignorer.",
+      "Voice keyer avec PTT CAT : une option indiquant que l’audio du keyer arrive sur l’entrée DATA / USB de la radio et non sur la prise micro. Un Kenwood TS-590 a deux commandes d’émission — TX ouvre le micro de face avant, TX1 l’ACC2/USB — si bien qu’un keyer jouant par la carte son du poste émettait dans le vide pendant que la radio écoutait un micro devant lequel personne ne parlait. Affichée sur le backend Kenwood uniquement — aucune autre famille de postes ne fait cette distinction — et le bouton Test PTT emprunte le même chemin."
+    ]
+  },
   {
     "version": "0.27.8",
     "date": "",

clublogprefix_test.go

@@ -0,0 +1,62 @@
+package main
+
+import (
+	"context"
+	"path/filepath"
+	"testing"
+	"time"
+
+	"hamlog/internal/clublog"
+	"hamlog/internal/dxcc"
+	"hamlog/internal/qso"
+)
+
+// Reported from a real import: every ZK2 contact came back as New Zealand and a
+// confirmed entity — Niue — disappeared from the operator's DXCC.
+//
+// cty.dat is not wrong, it is CURRENT: Niue moved to E6, so ZK2 reverted to New
+// Zealand there. ClubLog still knows ZK2 was Niue, and knowing that is the whole
+// reason for enabling its country file.
+func TestClublogPrefixRescuesRetiredPrefixes(t *testing.T) {
+	dir := filepath.Join("build", "bin", "data")
+	dm := dxcc.NewManager(dir)
+	if err := dm.LoadFromDisk(); err != nil {
+		t.Skipf("cty.dat not available here: %v", err)
+	}
+	cm := clublog.NewManager("", dir)
+	if err := cm.EnsureLoaded(); err != nil {
+		t.Skipf("ClubLog country file not available here: %v", err)
+	}
+	a := &App{ctx: context.Background(), dxcc: dm, clublog: cm}
+
+	when := time.Date(2005, 6, 1, 0, 0, 0, 0, time.UTC)
+	cases := []struct {
+		call string
+		want int // ADIF entity
+		why  string
+	}{
+		{"ZK2KK", 188, "Niue — the reported case"},
+		{"ZK1XYZ", 234, "South Cook Islands, lost the same way"},
+	}
+	for _, c := range cases {
+		q := qso.QSO{Callsign: c.call, QSODate: when}
+		if !a.applyClublogException(&q, true) {
+			t.Errorf("%s: ClubLog changed nothing (%s)", c.call, c.why)
+			continue
+		}
+		if q.DXCC == nil || *q.DXCC != c.want {
+			got := 0
+			if q.DXCC != nil {
+				got = *q.DXCC
+			}
+			t.Errorf("%s resolved to %d (%s), want %d — %s", c.call, got, q.Country, c.want, c.why)
+		}
+	}
+
+	// A callsign ClubLog's prefix table does not know must be left to cty.dat
+	// rather than blanked: silence is not an answer.
+	q := qso.QSO{Callsign: "E6AG", QSODate: when}
+	if a.applyClublogException(&q, true) && q.DXCC != nil && *q.DXCC != 188 {
+		t.Errorf("E6AG was moved off Niue, to %d", *q.DXCC)
+	}
+}

frontend/src/components/AppearancePanel.tsx

@@ -1,4 +1,6 @@
-import { useEffect, useState } from 'react';
+import { useEffect, useRef, useState } from 'react';
+import { EventsEmit } from '../../wailsjs/runtime/runtime';
+import { GripVertical, Lock } from 'lucide-react';
 import { GetMatrixColors, GetRowColors, SaveMatrixColors, SaveRowColors } from '../../wailsjs/go/main/App';
 import { Checkbox } from '@/components/ui/checkbox';
 import { useI18n } from '@/lib/i18n';
@@ -290,6 +292,116 @@ export function AppearancePanel() {
       )}
 
       <MatrixColorsSection />
+      <WidgetOrderSection />
+    </div>
+  );
+}
+
+// The row of widgets to the right of the entry, in the order they appear.
+//
+// Flexbox does the moving in the main view — this list only decides the order
+// property each one gets. That is why a widget switched OFF still holds its
+// place here: it comes back where the operator left it rather than at the end.
+export const WIDGET_KEYS = [
+  'livestations', 'chat', 'rotor', 'motorant', 'antgenius',
+  'amp', 'tuner', 'scp', 'chasenew', 'watchlist', 'dvk', 'winkeyer', 'photo',
+] as const;
+
+const WIDGET_LABELS: Record<string, string> = {
+  livestations: 'wo.livestations', chat: 'wo.chat', rotor: 'wo.rotor',
+  motorant: 'wo.motorant', antgenius: 'wo.antgenius', amp: 'wo.amp',
+  tuner: 'wo.tuner', scp: 'wo.scp', chasenew: 'wo.chasenew', watchlist: 'wo.watchlist',
+  dvk: 'wo.dvk', winkeyer: 'wo.winkeyer', photo: 'wo.photo',
+};
+
+function readWidgetOrder(): string[] {
+  try {
+    const raw = localStorage.getItem('opslog.widgetOrder');
+    const arr = raw ? JSON.parse(raw) : null;
+    if (Array.isArray(arr)) {
+      // A key from an older build that no longer exists is dropped; a widget
+      // added since joins the end. An old preference can never hide a new one.
+      const known = arr.filter((k: any) => (WIDGET_KEYS as readonly string[]).includes(k));
+      return [...known, ...WIDGET_KEYS.filter((k) => !known.includes(k))];
+    }
+  } catch { /* corrupt pref → the default order */ }
+  return [...WIDGET_KEYS];
+}
+
+function WidgetOrderSection() {
+  const { t } = useI18n();
+  const [order, setOrder] = useState<string[]>(readWidgetOrder);
+  const dragKey = useRef<string | null>(null);
+  const [dragging, setDragging] = useState<string | null>(null);
+  // Where the row would land. Drawn as a line above the target rather than by
+  // colouring it: the question a dragging hand asks is "between which two", and
+  // a highlighted row answers a different one.
+  const [over, setOver] = useState<string | null>(null);
+
+  const commit = (keys: string[]) => {
+    setOrder(keys);
+    try { localStorage.setItem('opslog.widgetOrder', JSON.stringify(keys)); } catch { /* private mode */ }
+    // The main view listens: an order is meant to be watched as it is dragged,
+    // not discovered after closing Preferences.
+    EventsEmit('widgets:order', keys);
+  };
+  const moveTo = (from: string, to: string) => {
+    if (from === to) return;
+    const next = order.filter((k) => k !== from);
+    const at = next.indexOf(to);
+    next.splice(at < 0 ? next.length : at, 0, from);
+    commit(next);
+  };
+
+  return (
+    <div className="space-y-2">
+      <h3 className="text-sm font-semibold">{t('wo.title')}</h3>
+      <p className="text-xs text-muted-foreground">{t('wo.hint')}</p>
+      <div className="space-y-1 max-w-md">
+        {/* The two that cannot move, shown so the order reads as the whole row
+            rather than as a list that mysteriously starts at the third item. */}
+        {['wo.entry', 'wo.details'].map((k) => (
+          <div key={k}
+            className="flex items-center gap-2 rounded-md border border-border/60 bg-muted/30 px-2 py-1.5 text-sm text-muted-foreground">
+            <Lock className="size-3.5 shrink-0 opacity-60" />
+            <span className="flex-1 min-w-0 truncate">{t(k)}</span>
+          </div>
+        ))}
+        {order.map((k) => (
+          // The WHOLE row is the handle, not the grip alone: a list whose rows
+          // can only be moved by a 16-pixel icon is a list most people conclude
+          // cannot be moved. The grip stays as the sign that it can.
+          <div key={k} draggable
+            onDragStart={(e) => { dragKey.current = k; setDragging(k); e.dataTransfer.effectAllowed = 'move'; }}
+            onDragEnd={() => { dragKey.current = null; setDragging(null); setOver(null); }}
+            onDragOver={(e) => {
+              if (!dragKey.current) return;
+              e.preventDefault();
+              e.dataTransfer.dropEffect = 'move';
+              if (over !== k) setOver(k);
+            }}
+            onDragLeave={() => { if (over === k) setOver(null); }}
+            onDrop={(e) => {
+              if (!dragKey.current) return;
+              e.preventDefault();
+              moveTo(dragKey.current, k);
+              setOver(null);
+            }}
+            title={t('wo.drag')}
+            className={cn('flex items-center gap-2 rounded-md border bg-card px-2 py-1.5 text-sm select-none',
+              'cursor-grab active:cursor-grabbing transition-shadow',
+              dragging === k ? 'opacity-50 border-primary shadow-lg' : 'border-border hover:border-foreground/30',
+              // The landing line, on the edge the row would take.
+              over === k && dragging !== k && 'shadow-[inset_0_3px_0_0_var(--primary)]')}>
+            <GripVertical className="size-4 shrink-0 text-muted-foreground/50" />
+            <span className="flex-1 min-w-0 truncate">{t(WIDGET_LABELS[k] ?? k)}</span>
+          </div>
+        ))}
+      </div>
+      <button type="button" onClick={() => commit([...WIDGET_KEYS])}
+        className="text-xs text-muted-foreground hover:text-foreground underline">
+        {t('wo.reset')}
+      </button>
     </div>
   );
 }

frontend/src/components/ChaseNewPanel.tsx

@@ -15,7 +15,7 @@ import { useI18n } from '@/lib/i18n';
 import { chaseAllows } from '@/lib/spotDisplay';
 import { markerColour } from '@/lib/spotMarkers';
 import { cn } from '@/lib/utils';
-import { GetChaseNewSpots } from '../../wailsjs/go/main/App';
+import { GetChaseNewSpots, GetPSKReporterStatus } from '../../wailsjs/go/main/App';
 
 export interface ChaseNewSpot {
   call: string;
@@ -80,15 +80,25 @@ function categoryOf(s: ChaseNewSpot): Category | null {
 
 const FILTER_KEY = 'opslog.chaseNewFilters';
 
+function allowedCategories(): Category[] {
+  return CATEGORIES.filter((c) => chaseAllows(c.key)).map((c) => c.key);
+}
+
 function loadFilters(): Set<Category> {
+  const allowed = allowedCategories();
   try {
     const raw = localStorage.getItem(FILTER_KEY);
     if (raw) {
       const list = JSON.parse(raw) as Category[];
-      if (Array.isArray(list)) return new Set(list);
+      // A stored set holding NONE of the categories on offer hides the whole
+      // panel, for ever, with nothing to say why — and that is exactly what a
+      // preference written by an older build does once a category is renamed.
+      // Treated as "no preference": a panel that shows nothing at every launch
+      // is never what was meant, and the chips are one click away.
+      if (Array.isArray(list) && list.some((k) => allowed.includes(k))) return new Set(list);
     }
   } catch { /* a corrupt preference is not worth a broken panel */ }
-  return new Set(CATEGORIES.filter((c) => chaseAllows(c.key)).map((c) => c.key));
+  return new Set(allowed);
 }
 
 export function ChaseNewPanel({ onPick, onClose }: Props) {
@@ -96,6 +106,10 @@ export function ChaseNewPanel({ onPick, onClose }: Props) {
   const [spots, setSpots] = useState<ChaseNewSpot[]>([]);
   const [loaded, setLoaded] = useState(false);
   const [on, setOn] = useState<Set<Category>>(loadFilters);
+  // The FEED, not the list: connected or not, how many reports it has taken,
+  // and what it is filtered on. Without it an empty panel says nothing about
+  // whether anything is arriving at all — which is the first question.
+  const [feed, setFeed] = useState<any>(null);
 
   // Polled rather than pushed: the feed can deliver several a second under an
   // opening, and an event per row would be a redraw per row for a list nobody
@@ -106,6 +120,8 @@ export function ChaseNewPanel({ onPick, onClose }: Props) {
       try {
         const r = ((await GetChaseNewSpots()) ?? []) as ChaseNewSpot[];
         if (alive) { setSpots(r); setLoaded(true); }
+        const st = await GetPSKReporterStatus();
+        if (alive) setFeed(st);
       } catch { /* the feed may not be up yet */ }
     };
     tick();
@@ -154,8 +170,13 @@ export function ChaseNewPanel({ onPick, onClose }: Props) {
           ))}
         </div>
 
+        {/* Both numbers: what is on screen, and what was heard. They differ
+            exactly when a category is switched off, which is the one case an
+            operator reads this panel as broken. */}
         <span className="shrink-0 text-[10px] text-muted-foreground">
-          {loaded ? t('chn.count', { n: shown.length }) : ''}
+          {loaded ? (shown.length === spots.length
+            ? t('chn.count', { n: spots.length })
+            : t('chn.countOf', { n: shown.length, total: spots.length })) : ''}
         </span>
         {onClose && (
           <button
@@ -218,7 +239,16 @@ export function ChaseNewPanel({ onPick, onClose }: Props) {
         )}
       </div>
 
-      <p className="border-t border-border px-2 py-1 text-[10px] text-muted-foreground">{t('chn.digitalOnly')}</p>
+      {/* The radius comes from the FEED, not from a sentence: it was written
+          into this line as "~300 km" and stayed 300 while the setting said
+          1000, which is the panel telling the operator their change did not
+          take when it had. */}
+      <p className="border-t border-border px-2 py-1 text-[10px] text-muted-foreground">
+        {t('chn.heardWithin', { km: feed?.near_km || 300 })}
+        {feed && (feed.running
+          ? <span className="text-success"> · {t('chn.feedOn', { n: feed.received ?? 0, sq: feed.squares ?? 0 })}</span>
+          : <span className="text-warning"> · {feed.last_err ? t('chn.feedErr', { e: feed.last_err }) : t('chn.feedOff')}</span>)}
+      </p>
     </div>
   );
 }

frontend/src/components/DecodesPanel.tsx

@@ -12,13 +12,17 @@
 // Status flags (new entity / band / mode / slot / grid / prefix / POTA / county)
 // come from the same resolver the cluster uses, so a call means the same thing in
 // both panels rather than being judged twice by two rules.
-import { useEffect, useMemo, useState } from 'react';
-import { Radio, Search, X, Signal, ArrowUpRight, Timer, Trash2, Ban, Columns2, Bot } from 'lucide-react';
+import { useCallback, useEffect, useMemo, useState } from 'react';
+import { AlertTriangle, Radio, Search, X, Signal, ArrowUpRight, Timer, Trash2, Ban, Columns2, Bot } from 'lucide-react';
 import { cn } from '@/lib/utils';
 import { useI18n } from '@/lib/i18n';
 import { chaseAllows } from '@/lib/spotDisplay';
+import { pathBetween } from '@/lib/maidenhead';
+import { distanceValue, distanceUnit, subscribeDistanceUnit } from '@/lib/units';
 import { markerColour, type SpotMarkerKey } from '@/lib/spotMarkers';
 import { writeUiPref } from '@/lib/uiPref';
+import { SetAutoCallVisible } from '../../wailsjs/go/main/App';
+import { decoderName } from '@/lib/decoderName';
 
 export type Decode = {
   call: string;
@@ -95,8 +99,17 @@ interface Props {
   // receiver reported last, which is a coin toss — each pane needs its own.
   txStates?: Record<string, TxMsg>;
   spotStatus: Record<string, StatusEntry>;
+  // The band the RIG is on, when CAT is connected. Only ever compared with what
+  // the decoder announces — see the drift warning.
+  rigBand?: string;
   onCall: (d: Decode) => void;
+  // A single click: take the station without transmitting — fill the entry, and
+  // point the panels at it. Absent, a click falls back to onCall.
+  onSelect?: (d: Decode) => void;
   myCall?: string;
+  // The station's own square: distance is measured from it, and without one the
+  // column stays empty rather than guessing.
+  myGrid?: string;
   // Drop every decode and transmit message held for this panel. The list is a
   // live view, not data — clearing it costs nothing but the seconds until the
   // next period lands.
@@ -112,6 +125,15 @@ interface Props {
   // machine off is not something to go hunting through a settings tree for.
   autoCallOn?: boolean;
   onToggleAutoCall?: () => void;
+  // The engine's own account of what it is doing, straight from the backend.
+  autoCall?: { target: string; waiting: string; calls: number; max: number; misses: number; max_miss: number; stopped: boolean; reason: string };
+  // The chase list, here as well as in Preferences: naming the station you are
+  // waiting for is done WHILE watching the band, not in a settings tree.
+  autoCallOnly?: string;
+  onSetAutoCallOnly?: (list: string) => void;
+  // The watch list, as PATTERNS (VK9*, 3Y0J). A decode of one is worth saying
+  // so where the operator is reading the band, not only in the watchlist tab.
+  watchlist?: string[];
 }
 
 // The "new" categories, as toggle badges — the same idea and the same colours as
@@ -158,6 +180,21 @@ function catsOf(e: StatusEntry | undefined): Set<NewCat> {
   return out;
 }
 
+// isWatched applies the watch list's own rule — a trailing "*" is a prefix,
+// anything else is the whole callsign — so a decode is judged here exactly as
+// the backend judges a spot. Two rules for one list is how a badge and an alert
+// start disagreeing about the same station.
+function isWatched(call: string, patterns: string[] | undefined): boolean {
+  if (!patterns || patterns.length === 0 || !call) return false;
+  const c = call.toUpperCase();
+  for (const raw of patterns) {
+    const p = (raw ?? '').toUpperCase().trim();
+    if (!p) continue;
+    if (p.endsWith('*') ? c.startsWith(p.slice(0, -1)) : c === p) return true;
+  }
+  return false;
+}
+
 const CAT_KEY = 'opslog.decodeCats';
 const SPLIT_KEY = 'opslog.decodeSplit';
 const FILTER_KEY = 'opslog.decodeFilters';
@@ -239,9 +276,14 @@ const CELL_LAST = 'flex items-center min-w-0 px-2 gap-1 overflow-hidden';
 // One declaration per column, in display order: the header, the widths and the
 // resize handles all read from this, so a column cannot be resized in the header
 // and stay the old width in the body.
-type ColKey = 'time' | 'snr' | 'dt' | 'freq' | 'band' | 'mode' | 'msg' | 'grid' | 'state' | 'country' | 'status';
+type ColKey = 'time' | 'rx' | 'snr' | 'dt' | 'freq' | 'band' | 'mode' | 'msg' | 'grid' | 'dist' | 'state' | 'country' | 'status';
 const COLS: { key: ColKey; tkey: string; def: number; min: number }[] = [
   { key: 'time',    tkey: 'dec.colTime',    def: 64,  min: 44 },
+  // WHICH RECEIVER heard it. Shown only while more than one is feeding, and
+  // that is the case it exists for: two decoders on one band send the same
+  // stations twice, each with its own SNR and DT, and a merged list gave no way
+  // at all to tell a second receiver from a duplicate.
+  { key: 'rx',      tkey: 'dec.colRx',      def: 74,  min: 44 },
   { key: 'snr',     tkey: 'dec.colSnr',     def: 50,  min: 36 },
   { key: 'dt',      tkey: 'dec.colDt',      def: 44,  min: 32 },
   { key: 'freq',    tkey: 'dec.colFreq',    def: 56,  min: 40 },
@@ -255,6 +297,11 @@ const COLS: { key: ColKey; tkey: string; def: number; min: number }[] = [
   { key: 'grid',    tkey: 'dec.colGrid',    def: 62,  min: 46 },
   // For the WAS chasers: the badge carries the two letters, the name spells
   // them out — "SD" alone is a quiz for a European.
+  // Next to the square it is computed from. A four-character grid is a square
+  // tens of kilometres wide, so this is rounded to whole units and never
+  // pretends to more: it answers "is that station across the pond or across the
+  // valley", which is what decides whether the report is worth anything.
+  { key: 'dist',    tkey: 'dec.colDist',    def: 70,  min: 46 },
   { key: 'state',   tkey: 'dec.colState',   def: 120, min: 56 },
   { key: 'country', tkey: 'dec.colCountry', def: 140, min: 70 },
   { key: 'status',  tkey: 'dec.colStatus',  def: 186, min: 80 },
@@ -273,6 +320,39 @@ const US_STATES: Record<string, string> = {
   WV: 'West Virginia', WI: 'Wisconsin', WY: 'Wyoming', DC: 'District of Columbia',
 };
 
+// The columns worth sorting on. Not every column: time is what the periods
+// already are, and sorting a slot by callsign or message answers no question an
+// operator has.
+type SortKey = 'snr' | 'freq' | 'dist' | 'country' | 'status';
+const SORTABLE: SortKey[] = ['snr', 'freq', 'dist', 'country', 'status'];
+
+// Which way each column is worth reading FIRST — strongest signal, lowest
+// frequency, furthest DX, A to Z, most wanted. Clicking again reverses it.
+const SORT_FIRST: Record<SortKey, 'asc' | 'desc'> = {
+  snr: 'desc', freq: 'asc', dist: 'desc', country: 'asc', status: 'desc',
+};
+
+// How wanted a station is, as a number to sort by. The cluster's own order,
+// most wanted first — a new entity above a new band above a new slot — so the
+// two views rank the same things the same way.
+const STATUS_RANK: Record<string, number> = {
+  'new': 100, 'new-band-mode': 90, 'new-band': 80, 'new-mode': 70, 'new-slot': 60,
+  'new-call': 30, 'worked': 10,
+};
+function statusRank(e?: StatusEntry): number {
+  if (!e) return 0;
+  let r = STATUS_RANK[e.status ?? ''] ?? 0;
+  // The markers that are orthogonal to the entity: a new county on a worked
+  // country is still something to chase, and should not sort with the plain
+  // duplicates.
+  if (e.new_pota) r = Math.max(r, 50);
+  if (e.new_county) r = Math.max(r, 45);
+  if (e.new_grid) r = Math.max(r, 44);
+  if (e.new_state) r = Math.max(r, 43);
+  if (e.new_pfx) r = Math.max(r, 42);
+  return r;
+}
+
 const COL_MAX = 600;
 const COLW_KEY = 'opslog.decodeColWidths';
 
@@ -409,16 +489,31 @@ function periodLabel(ms: number, trSec: number): string {
 // read "CQ CQ PE1NAO JO32" — the badge and the message's own first word saying
 // the same thing twice. Highlighting the word already in the line keeps the
 // scannability and drops the stutter.
-function renderMsg(msg: string, me: string, calling: string) {
+function renderMsg(msg: string, me: string, calling: string, toMe: boolean) {
   if (!msg) return null;
+  // THE WHOLE LINE, when it is addressed to YOU.
+  //
+  // Token colouring is for reading the band — it picks your call out of a wall
+  // of other people's traffic. A message sent TO you is a different question:
+  // not "is my call in there somewhere" but "what did he just send me", read
+  // from the far side of the shack, so the whole line carries the colour.
+  //
+  // Only that case. The station you are calling also transmits to everybody
+  // else — "LA8WRA LA1RAU/P +00" is your target reporting to another caller —
+  // and setting those lines in the same strong colour said you were in a QSO
+  // you were not in. Its callsign is picked out by the token pass below, which
+  // is what "he is on the air, working somebody else" should look like.
+  if (toMe) {
+    return <span className="font-bold text-success">{msg}</span>;
+  }
   // Split on whitespace and colour the tokens that matter, rather than the
   // whole line: an operator scanning a slot is looking for their own call in
   // the first position (someone answering) and for the station being called.
-  const parts = msg.split(/(s+)/);
+  const parts = msg.split(/(\s+)/);
   return (
     <>
       {parts.map((tok, i) => {
-        if (/^s+$/.test(tok)) return tok;
+        if (/^\s+$/.test(tok)) return tok;
         const bare = tok.replace(/[<>]/g, '').toUpperCase();
         if (i === 0 && /^CQ$/i.test(tok)) return <span key={i} className="font-bold text-success">{tok.toUpperCase()}</span>;
         if (me && bare === me) return <span key={i} className="font-bold text-success">{tok}</span>;
@@ -437,7 +532,7 @@ function renderMsg(msg: string, me: string, calling: string) {
 //
 // It is the one moving thing on the panel, and it answers the question an
 // operator actually has between overs: how long until the next batch.
-function PeriodClock({ trSec, mode }: { trSec: number; mode?: string }) {
+function PeriodClock({ trSec, mode, tx }: { trSec: number; mode?: string; tx?: boolean }) {
   const [now, setNow] = useState(() => Date.now());
   useEffect(() => {
     // 100 ms: smooth enough for a bar that fills in three and three quarter
@@ -453,19 +548,26 @@ function PeriodClock({ trSec, mode }: { trSec: number; mode?: string }) {
   // The last fifth of a slot is when a decode is imminent and an operator
   // deciding whether to answer has run out of time to think.
   const closing = left <= trSec / 5;
+  // TRANSMITTING outranks both. The bar is the one thing on this screen that
+  // moves continuously, so it is what the eye is already on — and "am I on the
+  // air" is the state worth reading from across the room. Red, and it stays red
+  // for the whole over rather than turning amber near the end of it.
+  const tone = tx ? 'danger' : closing ? 'warning' : '';
 
   return (
     <span className="flex items-center gap-2 shrink-0" title={mode ? `${mode} · ${trSec}s` : `${trSec}s`}>
-      <Timer className={cn('size-4', closing ? 'text-warning' : 'text-muted-foreground')} />
+      <Timer className={cn('size-4',
+        tone === 'danger' ? 'text-danger' : tone === 'warning' ? 'text-warning' : 'text-muted-foreground')} />
       <span className="relative h-1.5 w-24 rounded-full bg-muted overflow-hidden">
         <span
           className={cn('absolute inset-y-0 left-0 rounded-full transition-[width] duration-100 ease-linear',
-            closing ? 'bg-warning' : 'bg-primary')}
+            tone === 'danger' ? 'bg-danger' : tone === 'warning' ? 'bg-warning' : 'bg-primary')}
           style={{ width: `${pct}%` }}
         />
       </span>
       <span className={cn('font-mono text-sm tabular-nums w-10 text-right',
-        closing ? 'text-warning font-semibold' : 'text-muted-foreground')}>
+        tone === 'danger' ? 'text-danger font-semibold'
+          : tone === 'warning' ? 'text-warning font-semibold' : 'text-muted-foreground')}>
         {left.toFixed(1)}
       </span>
       <span className="text-xs text-muted-foreground">
@@ -539,14 +641,21 @@ function buildPeriods(filtered: Decode[], txMsgs: TxMsg[]) {
     }));
 }
 
-export function DecodesPanel({ decodes, txMsgs, txState, txStates, spotStatus, onCall, myCall, onClear, onHalt, autoCallOn, onToggleAutoCall }: Props) {
+export function DecodesPanel({ decodes, txMsgs, txState, txStates, spotStatus, rigBand, onCall, onSelect, myCall, myGrid, onClear, onHalt, autoCallOn, onToggleAutoCall, autoCall, autoCallOnly, onSetAutoCallOnly, watchlist }: Props) {
   const { t } = useI18n();
   // Column widths, dragged in the header and shared by every row. Persisted
   // through writeUiPref (not raw localStorage) so the layout travels with data/
   // like every other portable preference.
   const [colw, setColw] = useState<ColWidths>(loadWidths);
-  const template = useMemo(() => COLS.map((c) => `${colw[c.key]}px`).join(' '), [colw]);
-  const tableW = useMemo(() => COLS.reduce((s, c) => s + colw[c.key], 0), [colw]);
+  // The chase list as TYPED. Re-seeded whenever the stored value changes —
+  // from Preferences, or from another window — but never while the box has the
+  // focus, or a status arriving mid-word would rewrite what is being typed.
+  const [onlyText, setOnlyText] = useState(autoCallOnly ?? '');
+  useEffect(() => {
+    const el = document.activeElement as HTMLElement | null;
+    if (el && el.tagName === 'INPUT' && el.getAttribute('placeholder') === t('dec.chasePh')) return;
+    setOnlyText(autoCallOnly ?? '');
+  }, [autoCallOnly, t]);
   const setColWidth = (key: ColKey, px: number) => {
     const col = COLS.find((c) => c.key === key)!;
     const w = Math.min(COL_MAX, Math.max(col.min, Math.round(px)));
@@ -595,8 +704,85 @@ export function DecodesPanel({ decodes, txMsgs, txState, txStates, spotStatus, o
   const statusOf = (d: Decode): StatusEntry | undefined =>
     spotStatus[`${d.call}|${d.band ?? ''}|${(d.mode ?? '').toUpperCase()}`];
 
+  // ── Sorting, inside a period ──────────────────────────────────────────
+  //
+  // WITHIN each slot and never across them. The periods are the point of this
+  // panel — what was on the air in one fifteen-second window — and a list
+  // sorted end to end by signal would mix three minutes of decodes into one
+  // column of numbers with no way to tell which slot any of them came from.
+  //
+  // Arrival order stays the default and stays one click away, because it
+  // mirrors the decoder's own window line for line, which is what makes the
+  // two screens comparable at a glance.
+  const [sortSpec, setSortSpec] = usePersisted('sort', '');
+  const [sortKey, sortDir] = useMemo(() => {
+    const [k, d] = String(sortSpec || '').split(':');
+    return [SORTABLE.includes(k as SortKey) ? (k as SortKey) : '', d === 'asc' ? 'asc' : 'desc'] as const;
+  }, [sortSpec]);
+
+  // One click sorts the way that column is worth reading — strongest signal,
+  // furthest DX, lowest frequency, A to Z, most wanted. The second reverses it,
+  // the third gives arrival order back.
+  const toggleSort = (k: SortKey) => {
+    if (sortKey !== k) { setSortSpec(`${k}:${SORT_FIRST[k]}`); return; }
+    if (sortDir === SORT_FIRST[k]) { setSortSpec(`${k}:${SORT_FIRST[k] === 'asc' ? 'desc' : 'asc'}`); return; }
+    setSortSpec('');
+  };
+
+  const sortValue = useCallback((d: Decode, k: SortKey): number | string => {
+    const e = statusOf(d);
+    switch (k) {
+      case 'snr': return d.snr;
+      case 'freq': return d.freq_hz ?? 0;
+      case 'dist': {
+        const g = d.grid || e?.grid || '';
+        const path = myGrid && g ? pathBetween(myGrid, g) : null;
+        // A station that never sent a grid cannot be placed. Sorted to the end
+        // whichever way round the column goes, rather than pretending to a
+        // distance of zero and sitting at the top of "nearest first".
+        return path ? path.distanceShort : Number.NaN;
+      }
+      case 'country': return (e?.country ?? '').toUpperCase();
+      case 'status': return statusRank(e);
+    }
+  }, [spotStatus, myGrid]);
+
+  const sortDecodes = useCallback((list: Decode[]): Decode[] => {
+    if (!sortKey) return list;
+    const sign = sortDir === 'asc' ? 1 : -1;
+    return [...list].sort((a, b) => {
+      const va = sortValue(a, sortKey), vb = sortValue(b, sortKey);
+      const na = typeof va === 'number' && Number.isNaN(va);
+      const nb = typeof vb === 'number' && Number.isNaN(vb);
+      if (na !== nb) return na ? 1 : -1;   // unknowns last, both ways
+      if (na && nb) return 0;
+      if (typeof va === 'string' || typeof vb === 'string') {
+        const sa = String(va), sb = String(vb);
+        // An empty country is an unknown too, not a name that sorts first.
+        if (!sa !== !sb) return sa ? -1 : 1;
+        return sign * sa.localeCompare(sb);
+      }
+      return sign * ((va as number) - (vb as number));
+    });
+  }, [sortKey, sortDir, sortValue]);
+
   // The mode currently on the air, for the slot clock. The newest decode knows
   // best; between overs the transmit state still does.
+  // A decoder that has lost its CAT link keeps announcing the last dial
+  // frequency it knew, and every decode after that carries a stale band. Nothing
+  // downstream can tell: the entity verdicts, the band filter and the FT map all
+  // believe what the decoder said, and an operator ends up reading NEW BAND for a
+  // band they are not on. (Seen for real: MSHV lost CAT, kept saying 80 m, and
+  // Korea showed as a new band because on 80 m it would have been.)
+  //
+  // Said, not decided. Using the rig's band instead would be wrong for anyone
+  // decoding a second receiver on another band, and a warning costs that setup
+  // nothing but a line it can read past.
+  const decoderBand = decodes.length ? (decodes[decodes.length - 1].band ?? '') : '';
+  const bandDrift = !!rigBand && !!decoderBand
+    && rigBand.toLowerCase() !== decoderBand.toLowerCase();
+  const driftInstance = decodes.length ? (decodes[decodes.length - 1].instance ?? '') : '';
+
   const liveMode = decodes.length ? decodes[decodes.length - 1].mode : txState?.mode;
   const liveTr = trSeconds(liveMode, decodes.length ? decodes[decodes.length - 1].tr_period : undefined);
 
@@ -608,6 +794,8 @@ export function DecodesPanel({ decodes, txMsgs, txState, txStates, spotStatus, o
   // opens with our callsign, sometimes bracketed when the sender compressed a
   // non-standard call.
   const me = (myCall ?? '').toUpperCase();
+  const [, bumpUnit] = useState(0);
+  useEffect(() => subscribeDistanceUnit(() => bumpUnit((n) => n + 1)), []);
   const calling = (txState?.dx_call ?? '').toUpperCase();
   const answersMe = (msg?: string): boolean => {
     if (!me || !msg) return false;
@@ -644,6 +832,12 @@ export function DecodesPanel({ decodes, txMsgs, txState, txStates, spotStatus, o
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [decodes, spotStatus]);
 
+  // The receiver column is dead weight with one decoder — which is nearly
+  // everybody — so it is not there at all until a second one starts feeding.
+  const cols = useMemo(() => COLS.filter((c) => c.key !== 'rx' || (instances.length > 1 && !splitByInstance)),
+    [instances.length, splitByInstance]);
+  const template = useMemo(() => cols.map((c) => `${colw[c.key]}px`).join(' '), [cols, colw]);
+  const tableW = useMemo(() => cols.reduce((s, c) => s + colw[c.key], 0), [cols, colw]);
   // All seven, always, in their usual order.
   //
   // The chips used to be built from the continents ON the feed, which read as a
@@ -677,6 +871,22 @@ export function DecodesPanel({ decodes, txMsgs, txState, txStates, spotStatus, o
     });
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [decodes, spotStatus, cqOnly, lotwOnly, cats, bandSel, modeSel, contSel, minSnr, search]);
+  // What this panel is SHOWING, published to the auto-call engine.
+  //
+  // The filters are the operator's control over the transmitter as well as
+  // over the list: a station filtered off the screen is not called. The panel
+  // sends the callsigns rather than the filter settings, so there is one
+  // definition of "shown" and not two — the engine cannot disagree with what
+  // is in front of the operator.
+  useEffect(() => {
+    const calls = [...new Set(filtered.map((d) => (d.call ?? '').toUpperCase()).filter(Boolean))];
+    SetAutoCallVisible(calls, true).catch(() => {});
+  }, [filtered]);
+  // Closed, it publishes nothing: filters that are not on the screen cannot
+  // silence the engine behind the operator's back.
+  useEffect(() => () => { SetAutoCallVisible([], false).catch(() => {}); }, []);
+
+
 
   // Group into periods, newest first, and drop the operator's transmissions into
   // the slot they went out in.
@@ -687,19 +897,24 @@ export function DecodesPanel({ decodes, txMsgs, txState, txStates, spotStatus, o
   // Each pane cuts its own periods: the bands differ, so the slot boundaries and
   // the transmit messages belong to one receiver and not the other.
   const panes = useMemo(() => {
+    // The sort is applied to each period's decodes, never to the periods
+    // themselves: the slots stay newest-first, which is what the panel is.
+    const sorted = (ps: ReturnType<typeof buildPeriods>) =>
+      sortKey ? ps.map((p) => ({ ...p, decodes: sortDecodes(p.decodes) })) : ps;
     if (!splitByInstance || instances.length < 2) {
-      return [{ key: '', label: '', tx: txState ?? undefined, periods: buildPeriods(filtered, txMsgs) }];
+      return [{ key: '', label: '', tx: txState ?? undefined, periods: sorted(buildPeriods(filtered, txMsgs)) }];
     }
     return instances.map((inst) => ({
       key: inst,
-      label: inst,
+      // What the program is called, not the id it announces — see decoderName.
+      label: decoderName(inst),
       tx: txStates?.[inst],
-      periods: buildPeriods(
+      periods: sorted(buildPeriods(
         filtered.filter((d) => (d.instance ?? '') === inst),
         txMsgs.filter((m) => (m.instance ?? '') === inst),
-      ),
+      )),
     }));
-  }, [filtered, txMsgs, splitByInstance, instances, txState, txStates]);
+  }, [filtered, txMsgs, splitByInstance, instances, txState, txStates, sortKey, sortDecodes]);
 
 
   const resetFilters = () => {
@@ -732,7 +947,23 @@ export function DecodesPanel({ decodes, txMsgs, txState, txStates, spotStatus, o
         {/* The slot clock. Taken from the newest decode's mode, falling back to
             what the transmit state reports, so it is right the moment anything
             is heard and keeps running when the band goes quiet. */}
-        <PeriodClock trSec={liveTr} mode={liveMode} />
+        {/* Any receiver on the air colours it: with two decoders the shared
+            txState is whichever reported last, and "somebody here is
+            transmitting" is what the bar has to say. */}
+        <PeriodClock trSec={liveTr} mode={liveMode}
+          tx={!!txState?.transmitting || Object.values(txStates ?? {}).some((s) => s?.transmitting)} />
+        {bandDrift && (
+          <span
+            title={t('dec.bandDriftTip')}
+            className="inline-flex items-center gap-1 rounded-full border border-warning px-2 py-0.5 text-[11px] font-semibold text-warning">
+            <AlertTriangle className="size-3.5" />
+            {t('dec.bandDrift', {
+              app: decoderName(driftInstance) || t('dec.bandDriftApp'),
+              dec: decoderBand.toUpperCase(),
+              rig: (rigBand ?? '').toUpperCase(),
+            })}
+          </span>
+        )}
         <span className="w-px h-5 bg-border/60 mx-1" />
 
         <button type="button" className={chip(cqOnly, 'success')} onClick={() => setCqOnly(!cqOnly)}>
@@ -859,6 +1090,88 @@ export function DecodesPanel({ decodes, txMsgs, txState, txStates, spotStatus, o
             filter. Halt goes LAST — it is the one that must be findable without
             reading, and the end of the row is the one position that never moves
             as filters come and go. */}
+        {/* Auto-call. Deliberately next to Halt: the two belong together, and
+            what it is doing right now — which station, how many calls of how
+            many — is on the button itself, because a thing that keys the
+            transmitter must never be a switch with no readout. */}
+        {onToggleAutoCall && (
+          <button
+            type="button"
+            onClick={onToggleAutoCall}
+            title={autoCall?.stopped ? t('dec.autoStoppedTip') : t('dec.autoCallTip')}
+            className={cn('h-8 px-2.5 rounded-lg text-sm inline-flex items-center gap-1.5 border font-medium',
+              !autoCallOn
+                ? 'border-border text-muted-foreground hover:bg-muted hover:text-foreground'
+                : autoCall?.stopped
+                  ? 'border-warning bg-warning text-warning-foreground'
+                  : 'border-success bg-success text-success-foreground')}
+          >
+            <Bot className="size-3.5" />
+            {t('dec.autoCall')}
+          </button>
+        )}
+        {/* WHAT IT IS DOING, BESIDE THE SWITCH RATHER THAN ON IT.
+            A thing that keys the transmitter must never be a switch with no
+            readout — but the readout was crammed inside the button as
+            "Auto D2ACE 1/7 ·1/3", where the two counters read as one number and
+            the whole control changed width every period. Out here each figure
+            gets a label, and the station being called is the biggest thing on
+            the row. */}
+        {autoCallOn && autoCall?.target && (
+          <span className="h-8 inline-flex items-center gap-2 rounded-lg border border-success/50 bg-success/10 px-2"
+            title={t('dec.autoTargetTip', { call: autoCall.target })}>
+            <span className="font-mono text-sm font-bold text-success">{autoCall.target}</span>
+            <span className="inline-flex items-center gap-1 text-[11px] text-muted-foreground">
+              <span className="uppercase tracking-wide">{t('dec.autoCalls')}</span>
+              <span className="font-mono tabular-nums text-foreground">{autoCall.calls}/{autoCall.max}</span>
+            </span>
+            {/* Only once there is one to report: a zero that is always there is
+                a figure nobody reads, and it was the half of the pair that got
+                mistaken for the call count. */}
+            {autoCall.misses > 0 && (
+              <span className="inline-flex items-center gap-1 text-[11px] text-muted-foreground">
+                <span className="uppercase tracking-wide">{t('dec.autoMisses')}</span>
+                <span className={cn('font-mono tabular-nums',
+                  autoCall.misses + 1 >= autoCall.max_miss ? 'text-warning' : 'text-foreground')}>
+                  {autoCall.misses}/{autoCall.max_miss}
+                </span>
+              </span>
+            )}
+          </span>
+        )}
+        {/* Wanted, decoded, and in a QSO with somebody else. Holding fire looks
+            exactly like having nothing to do, and the operator had no way to
+            tell them apart. */}
+        {autoCallOn && !autoCall?.target && autoCall?.waiting && (
+          <span className="h-8 inline-flex items-center gap-1.5 rounded-lg border border-warning/50 bg-warning/10 px-2 animate-pulse"
+            title={t('dec.autoWaitTip', { call: autoCall.waiting })}>
+            <span className="text-sm">⏳</span>
+            <span className="font-mono text-sm font-bold text-warning">{autoCall.waiting}</span>
+            <span className="text-[11px] uppercase tracking-wide text-muted-foreground">{t('dec.autoWaiting')}</span>
+          </span>
+        )}
+        {/* The chase list. Raw text while typing, committed on blur or Enter:
+            the stored value is upper-cased and trimmed, and binding the box to
+            that makes the space bar look dead — in a field whose whole purpose
+            is a list separated by spaces. */}
+        {onSetAutoCallOnly && (
+          <input
+            type="text"
+            value={onlyText}
+            onChange={(e) => setOnlyText(e.target.value)}
+            onBlur={() => { if (onlyText.toUpperCase() !== (autoCallOnly ?? '')) onSetAutoCallOnly(onlyText); }}
+            onKeyDown={(e) => {
+              if (e.key === 'Enter') (e.target as HTMLInputElement).blur();
+              if (e.key === 'Escape') setOnlyText(autoCallOnly ?? '');
+            }}
+            placeholder={t('dec.chasePh')}
+            title={t('dec.chaseTip')}
+            className={cn('h-8 w-44 rounded-lg border px-2 text-sm font-mono uppercase bg-background',
+              (autoCallOnly ?? '').trim()
+                ? 'border-primary text-foreground'
+                : 'border-border text-muted-foreground')}
+          />
+        )}
         {onHalt && (
           <button
             type="button"
@@ -925,7 +1238,7 @@ export function DecodesPanel({ decodes, txMsgs, txState, txStates, spotStatus, o
           <span className="flex-1" />
           {txState.band && <span className="text-xs text-muted-foreground shrink-0">{txState.band}</span>}
           {txState.instance && instances.length > 1 && (
-            <span className="text-xs text-muted-foreground shrink-0">{txState.instance}</span>
+            <span className="text-xs text-muted-foreground shrink-0">{decoderName(txState.instance)}</span>
           )}
         </div>
       )}
@@ -984,23 +1297,33 @@ export function DecodesPanel({ decodes, txMsgs, txState, txStates, spotStatus, o
       <div className="shrink-0 border-b border-border bg-background overflow-hidden">
         <div className={cn(ROW, 'h-7 text-[10px] font-semibold uppercase tracking-wider text-muted-foreground')}
           style={{ gridTemplateColumns: template, width: tableW }}>
-          {COLS.map((c, i) => (
+          {cols.map((c, i) => {
+            const sortable = SORTABLE.includes(c.key as SortKey);
+            const active = sortable && sortKey === c.key;
+            return (
               <span key={c.key}
                 // Not CELL_LAST for the final column: its overflow-hidden would
                 // clip that column's own resize handle.
                 className={cn('relative flex items-center min-w-0 px-2',
-                i < COLS.length - 1 && 'border-r border-border/30',
+                  i < cols.length - 1 && 'border-r border-border/30',
                   // The three numeric columns label their own right edge, where the
                   // figures are.
-                (c.key === 'snr' || c.key === 'dt' || c.key === 'freq') && 'justify-end')}
-              title={c.key === 'dt' ? t('dec.colDtTitle') : c.key === 'freq' ? t('dec.colFreqTitle') : undefined}>
-              <span className="truncate">{t(c.tkey)}</span>
+                  (c.key === 'snr' || c.key === 'dt' || c.key === 'freq' || c.key === 'dist') && 'justify-end',
+                  sortable && 'cursor-pointer select-none hover:text-foreground',
+                  active && 'text-primary')}
+                onClick={sortable ? () => toggleSort(c.key as SortKey) : undefined}
+                title={sortable ? t('dec.sortTip')
+                  : c.key === 'dt' ? t('dec.colDtTitle')
+                  : c.key === 'freq' ? t('dec.colFreqTitle') : undefined}>
+                <span className="truncate">{c.key === 'dist' ? `${t(c.tkey)} (${distanceUnit()})` : t(c.tkey)}</span>
+                {active && <span className="ml-0.5 shrink-0">{sortDir === 'asc' ? '▲' : '▼'}</span>}
                 <ColResizer
                   onResize={(dx) => setColWidth(c.key, colw[c.key] + dx)}
                   onReset={() => setColWidth(c.key, c.def)}
                 />
               </span>
-          ))}
+            );
+          })}
         </div>
       </div>
 
@@ -1065,11 +1388,19 @@ export function DecodesPanel({ decodes, txMsgs, txState, txStates, spotStatus, o
                 <button
                   key={`${d.call}-${d.freq_hz}-${i}`}
                   type="button"
-                  onClick={() => onCall(d)}
+                  // ONE click selects, TWO transmit — the cluster's rule, and
+                  // the only safe one here: a single click used to hand the
+                  // decode straight to WSJT-X as a Reply, so brushing a row
+                  // while reading the band started calling a station.
+                  onClick={() => (onSelect ?? onCall)(d)}
+                  onDoubleClick={() => onCall(d)}
                   title={t('dec.callTitle', { call: d.call })}
                   style={{ gridTemplateColumns: template, width: tableW }}
                   className={cn(ROW, 'text-left border-b border-border/20 transition-colors',
-                    replying ? 'bg-success/20 hover:bg-success/25'
+                    replying ? 'bg-success/25 hover:bg-success/30 border-l-2 border-l-success'
+                      // The station being called: a tint saying "he is on the
+                      // air", not the QSO treatment above — most of what he
+                      // sends is to other people.
                       : worked ? 'bg-danger/15 hover:bg-danger/20'
                       : mine ? 'bg-info/10'
                       : 'hover:bg-muted/50')}
@@ -1082,6 +1413,15 @@ export function DecodesPanel({ decodes, txMsgs, txState, txStates, spotStatus, o
                     {hhmmssCompact(d.at)}
                   </span>
 
+                  {/* Which receiver heard it — present only while more than one
+                      is feeding a merged list. */}
+                  {cols.some((c) => c.key === 'rx') && (
+                    <span className={cn(CELL, 'text-[11px] text-muted-foreground truncate')}
+                      title={d.instance ?? ''}>
+                      {decoderName(d.instance)}
+                    </span>
+                  )}
+
                   <span className={cn(CELL, 'justify-end font-mono text-[13px] font-semibold tabular-nums', snrTone(d.snr))}>
                     {d.snr > 0 ? `+${d.snr}` : d.snr}
                   </span>
@@ -1115,7 +1455,7 @@ export function DecodesPanel({ decodes, txMsgs, txState, txStates, spotStatus, o
                   {/* The message carries the callsign already — which is why
                       there is no column repeating it. */}
                   <span className={cn(CELL, 'font-mono text-[13px]')}>
-                    <span className="truncate">{renderMsg(d.msg ?? '', me, calling)}</span>
+                    <span className="truncate">{renderMsg(d.msg ?? '', me, calling, replying)}</span>
                   </span>
 
                   {/* The decode's own grid first, the remembered one as the
@@ -1128,6 +1468,14 @@ export function DecodesPanel({ decodes, txMsgs, txState, txStates, spotStatus, o
                     <span className="truncate">{d.grid || e?.grid || ''}</span>
                   </span>
 
+                  <span className={cn(CELL, 'justify-end font-mono text-[11px] tabular-nums text-muted-foreground/80')}>
+                    {(() => {
+                      const g = d.grid || e?.grid || '';
+                      const path = myGrid && g ? pathBetween(myGrid, g) : null;
+                      return path ? distanceValue(path.distanceShort).toLocaleString() : '';
+                    })()}
+                  </span>
+
                   <span className={cn(CELL, 'gap-1.5')}>
                     {e?.state && (
                       <>
@@ -1153,6 +1501,15 @@ export function DecodesPanel({ decodes, txMsgs, txState, txStates, spotStatus, o
                         {t('dec.wkd')}
                       </span>
                     )}
+                    {/* Plainest first: the LoTW letter, the worked note, then
+                        the coloured badges — the watch list leading them, being
+                        the operator's own answer rather than the log's. */}
+                    {isWatched(d.call, watchlist) && (
+                      <span className="rounded px-1 py-px text-[10px] font-bold uppercase tracking-wide shrink-0 text-white"
+                        style={{ background: '#f472b6' }} title={t('dec.wlTip')}>
+                        {t('dec.wl')}
+                      </span>
+                    )}
                     {entities.map((b) => (
                       <span key={b.label}
                         title={e?.unconf_status ? t('dec.unconfTip') : undefined}

frontend/src/components/FTMapPanel.tsx

@@ -1,10 +1,12 @@
 import { useEffect, useRef, useState } from 'react';
 import L from 'leaflet';
 import 'leaflet/dist/leaflet.css';
-import { gridToLatLon, greatCirclePoints } from '@/lib/maidenhead';
+import { gridToLatLon, greatCirclePoints, splitAtAntimeridian } from '@/lib/maidenhead';
 import { BASEMAPS, type BasemapKey } from '@/components/MainMap';
 import { cn } from '@/lib/utils';
 import { useI18n } from '@/lib/i18n';
+import { loadMapView, saveMapView, MAP_VIEW_FT } from '@/lib/mapView';
+import { loadMapBase, saveMapBase, MAP_BASE_FT } from '@/lib/mapBase';
 
 // FT Map — the live decode feed as geography: every station decoded in the
 // last half hour, an arc from the operator's own square to theirs, coloured by
@@ -18,12 +20,16 @@ import { useI18n } from '@/lib/i18n';
 // capped, and redraws happen when the DECODE LIST changes — every 15 s in FT8,
 // not per frame.
 
+// The map is handed the SAME decode objects the list works from — it only reads
+// a few of the fields. The rest travel with them so a click here can answer the
+// station exactly as a double-click in the list does.
 export type FTMapDecode = {
   call: string;
   grid?: string;
   band?: string;
   snr: number;
   at: string;
+  [k: string]: unknown;
 };
 
 // The band palette every PSK Reporter user already knows, near enough.
@@ -38,7 +44,26 @@ const bandColour = (b?: string) => BAND_COLOURS[(b ?? '').toLowerCase()] || '#9c
 const MAX_ARCS = 300;
 const MAX_AGE_MS = 30 * 60_000;
 
-export function FTMapPanel({ decodes, myGrid }: { decodes: FTMapDecode[]; myGrid: string }) {
+export function FTMapPanel({ decodes, myGrid, onSelect, onCall }: {
+  decodes: FTMapDecode[];
+  myGrid: string;
+  // One click takes the station, two answer it — the list's own gestures.
+  onSelect?: (d: FTMapDecode) => void;
+  onCall?: (d: FTMapDecode) => void;
+}) {
+  // Held in refs so the redraw below does not have to list them as dependencies
+  // and rebuild every arc whenever the parent re-renders.
+  const selectRef = useRef(onSelect);
+  const callRef = useRef(onCall);
+  useEffect(() => { selectRef.current = onSelect; callRef.current = onCall; }, [onSelect, onCall]);
+  // Distinguishing the two gestures is ours to do: Leaflet fires click before
+  // dblclick and leaves the telling apart to the handler.
+  const clickTimer = useRef<number | undefined>(undefined);
+  useEffect(() => () => window.clearTimeout(clickTimer.current), []);
+  // Where this map was left. Panning and zooming it is the operator saying which
+  // part of the world they are working; throwing that away on every tab switch
+  // made it something to set up again rather than something to glance at.
+  const saved = useRef(loadMapView(MAP_VIEW_FT));
   const { t } = useI18n();
   const divRef = useRef<HTMLDivElement>(null);
   const mapRef = useRef<L.Map | null>(null);
@@ -58,7 +83,15 @@ export function FTMapPanel({ decodes, myGrid }: { decodes: FTMapDecode[]; myGrid
       // No maxBounds: with the world smaller than the window the clamp
       // dragged every zoom into a corner. noWrap tiles alone keep one world.
       worldCopyJump: false, preferCanvas: true,
-      center: [25, 0], zoom: 2, minZoom: 2,
+      center: saved.current ? [saved.current.lat, saved.current.lon] : [25, 0],
+      zoom: saved.current ? saved.current.zoom : 2,
+      minZoom: 2,
+    });
+    // Every move, not just the deliberate ones: a zoom is as much a choice as a
+    // pan, and there is no moment afterwards at which to ask.
+    m.on('moveend', () => {
+      const c = m.getCenter();
+      saveMapView(MAP_VIEW_FT, c.lat, c.lng, m.getZoom());
     });
     mapRef.current = m;
     layerRef.current = L.layerGroup().addTo(m);
@@ -96,7 +129,7 @@ export function FTMapPanel({ decodes, myGrid }: { decodes: FTMapDecode[]; myGrid
     };
     baseRef.current = L.tileLayer(bm.url, { ...opts, attribution: bm.attr, subdomains: bm.subdomains ?? 'abc' }).addTo(m);
     if (bm.labelsUrl) labelsRef.current = L.tileLayer(bm.labelsUrl, opts).addTo(m);
-    localStorage.setItem('opslog.ftmapBase', basemap);
+    saveMapBase(MAP_BASE_FT, basemap);
   }, [basemap]);
 
   // The arcs, redrawn when the decode list changes. Newest last so they paint
@@ -124,14 +157,44 @@ export function FTMapPanel({ decodes, myGrid }: { decodes: FTMapDecode[]; myGrid
       const age = now - Date.parse(d.at);
       const fade = Math.max(0.15, 1 - age / MAX_AGE_MS);
       const colour = bandColour(d.band);
-      const pts = greatCirclePoints(from.lat, from.lon, to.lat, to.lon, 48);
-      L.polyline(pts as L.LatLngExpression[], {
+      // Cut at the antimeridian: this map shows ONE world, so a path running
+      // past ±180 has to leave one edge and come back at the other. Without it
+      // every arc out of VK or ZL was drawn into the blank space off the side
+      // of the map, its far end sitting alone on the opposite coast.
+      const pts = splitAtAntimeridian(greatCirclePoints(from.lat, from.lon, to.lat, to.lon, 48));
+      L.polyline(pts as L.LatLngExpression[][], {
         color: colour, weight: 1.3, opacity: 0.65 * fade, smoothFactor: 0,
       }).addTo(layer);
-      L.circleMarker([to.lat, to.lon], {
+      const label = `${d.call} · ${d.grid} · ${d.snr > 0 ? '+' : ''}${d.snr} dB`;
+      const mk = L.circleMarker([to.lat, to.lon], {
+        // A three-pixel dot is a fine mark and a poor target, so the visible
+        // radius stays and an invisible one three times the size takes the
+        // clicks.
         radius: 3, color: colour, weight: 1, fillColor: colour, fillOpacity: 0.9 * fade,
-      }).bindTooltip(`${d.call} · ${d.grid} · ${d.snr > 0 ? '+' : ''}${d.snr} dB`, { direction: 'top' })
-        .addTo(layer);
+      }).bindTooltip(label, { direction: 'top' }).addTo(layer);
+      // The tooltip goes on the HIT circle too, and it is the one that matters:
+      // being on top, it takes the hover as well as the click, and binding it
+      // only to the dot underneath left the map silent from the moment the dots
+      // became clickable — the callsign and report an operator reads by pointing
+      // at a station had simply gone.
+      const hit = L.circleMarker([to.lat, to.lon], {
+        radius: 9, opacity: 0, fillOpacity: 0, interactive: true,
+      }).bindTooltip(label, { direction: 'top' }).addTo(layer);
+      for (const target of [mk, hit]) {
+        target.on('click', (e) => {
+          // Not to the map: a click on a station is not a click on the water.
+          L.DomEvent.stopPropagation(e as unknown as Event);
+          window.clearTimeout(clickTimer.current);
+          clickTimer.current = window.setTimeout(() => selectRef.current?.(d), 250);
+        });
+        target.on('dblclick', (e) => {
+          // stop(), not stopPropagation(): the map zooms on a double click, and
+          // answering a station is not a request to zoom in on it.
+          L.DomEvent.stop(e as unknown as Event);
+          window.clearTimeout(clickTimer.current);
+          callRef.current?.(d);
+        });
+      }
     }
   }, [decodes, myGrid]);
 

frontend/src/components/GridSquareMap.tsx

@@ -6,8 +6,10 @@ import { GridSquares } from '../../wailsjs/go/main/App';
 import { gridSquareBounds, gridToLatLon } from '@/lib/maidenhead';
 import { useI18n } from '@/lib/i18n';
 import { cn } from '@/lib/utils';
-import { BASEMAPS, addBasemap, loadBasemap, type BasemapKey } from '@/components/MainMap';
+import { BASEMAPS, addBasemap, type BasemapKey } from '@/components/MainMap';
+import { loadMapBase, saveMapBase, MAP_BASE_GRIDS, MAP_BASE_WORLD } from '@/lib/mapBase';
 import { writeUiPref } from '@/lib/uiPref';
+import { loadMapView, saveMapView, MAP_VIEW_GRIDS } from '@/lib/mapView';
 
 // GridSquareMap — every Maidenhead square in the log, drawn on a world map.
 //
@@ -85,7 +87,9 @@ export function GridSquareMap({ myGrid, className }: { myGrid?: string; classNam
     () => (SCOPES.some((s) => s.key === localStorage.getItem(SCOPE_KEY))
       ? (localStorage.getItem(SCOPE_KEY) as ScopeKey) : 'DIGI'));
 
-  const [basemap, setBasemap] = useState<BasemapKey>(loadBasemap);
+  // This map's own imagery. It shared the world map's key until they were
+  // separated, so a choice made back then is inherited rather than reset.
+  const [basemap, setBasemap] = useState<BasemapKey>(() => loadMapBase(MAP_BASE_GRIDS, 'light', MAP_BASE_WORLD));
   const [confColour, setConfColour] = useState(() => localStorage.getItem(COL_CONFIRMED_KEY) ?? '');
   const [workedColour, setWorkedColour] = useState(() => localStorage.getItem(COL_WORKED_KEY) ?? '');
   // Repaint the squares when the THEME changes, not the basemap: the fills come
@@ -131,8 +135,16 @@ export function GridSquareMap({ myGrid, className }: { myGrid?: string; classNam
 
     }).setView([20, 0], 2);
     // The whole world, once, whatever the window is shaped like — computed by
-    // Leaflet from the container rather than guessed with a zoom number.
-    m.fitWorld({ animate: false });
+    // Leaflet from the container rather than guessed with a zoom number. Unless
+    // the operator has already chosen a view: theirs is the answer, and fitting
+    // the world over it would undo the choice on every tab switch.
+    const saved = loadMapView(MAP_VIEW_GRIDS);
+    if (saved) m.setView([saved.lat, saved.lon], saved.zoom);
+    else m.fitWorld({ animate: false });
+    m.on('moveend', () => {
+      const c = m.getCenter();
+      saveMapView(MAP_VIEW_GRIDS, c.lat, c.lng, m.getZoom());
+    });
     mapRef.current = m;
     layerRef.current = L.layerGroup().addTo(m);
     // Leaflet measures its container ONCE, when the map is created, and never
@@ -144,7 +156,7 @@ export function GridSquareMap({ myGrid, className }: { myGrid?: string; classNam
     // fitWorld above ran against a container that may still have had no size —
     // the tab is mounted hidden. Fit ONCE more the first time it really has one,
     // and never again: after that the view belongs to the operator.
-    let fitted = false;
+    let fitted = !!saved; // a remembered view is already the right size
     const ro = new ResizeObserver(() => {
       m.invalidateSize({ animate: false });
       const el = hostRef.current;
@@ -244,7 +256,7 @@ export function GridSquareMap({ myGrid, className }: { myGrid?: string; classNam
         </span>
         <select
           value={basemap}
-          onChange={(e) => { const v = e.target.value as BasemapKey; setBasemap(v); writeUiPref('opslog.mapBasemap', v); }}
+          onChange={(e) => { const v = e.target.value as BasemapKey; setBasemap(v); saveMapBase(MAP_BASE_GRIDS, v); }}
           title={t('gsm.basemap')}
           className="h-6 rounded border border-border bg-background px-1 text-[11px]"
         >

frontend/src/components/IcomPanel.tsx

@@ -10,7 +10,7 @@ import {
   IcomSetRIT, IcomSetRITOn, IcomSetXITOn,
   IcomSetAntenna, IcomSetPBTInner, IcomSetPBTOuter, IcomSetManualNotch, IcomSetNotchPos,
   IcomSetSquelch, IcomSetComp, IcomSetCompLevel, IcomSetMonitor, IcomSetMonLevel,
-  IcomSetVOX, IcomSetVOXGain, IcomSetAntiVOX, IcomSetPower,
+  IcomSetVOX, IcomSetVOXGain, IcomSetAntiVOX, IcomSetPower, IcomRecallBand,
 } from '../../wailsjs/go/main/App';
 import { cn } from '@/lib/utils';
 import { useI18n } from '@/lib/i18n';
@@ -68,8 +68,9 @@ const B2 = { l: '2', hz: 144_300_000 };       // SSB calling
 const B70 = { l: '70cm', hz: 432_200_000 };   // SSB calling
 const B23 = { l: '23cm', hz: 1_296_200_000 }; // SSB calling
 
-// Band buttons jump the VFO to a sensible default frequency (SSB/CW mix) using
-// the plain SetFrequency command — no band-stacking codes needed.
+// These frequencies are the FALLBACK: with the band stacking registers switched
+// on the radio is asked where the operator last was instead, and one of these is
+// only sent for a band or a model whose register cannot be read.
 //
 // Which buttons to OFFER depends on the radio, exactly as the attenuator steps
 // do below. An IC-9700 has no HF at all, yet the console was showing it 160
@@ -392,6 +393,19 @@ export function IcomPanel({ onReportRST, isNetwork = false }: { onReportRST?: (r
   const [st, setSt] = useState<IcomState>(ZERO);
   const [cat, setCat] = useState<any>(null); // RigState (freq/mode/split) for the VFO display
   const [tuning, setTuning] = useState(false);
+  // Band buttons: recall the radio's own band stacking register instead of
+  // sending a frequency picked here. Remembered per operator, not per session —
+  // it is a preference about how a button behaves, and having to set it again
+  // at every launch would make it not worth having.
+  const [bandStack, setBandStack] = useState(() => localStorage.getItem('opslog.icomBandStack') === '1');
+  const toggleBandStack = () => setBandStack((v) => {
+    const n = !v;
+    try { localStorage.setItem('opslog.icomBandStack', n ? '1' : '0'); } catch { /* private mode */ }
+    return n;
+  });
+  // Which register each band was last recalled from, so pressing the same band
+  // again walks 1 → 2 → 3 → 1, exactly as the radio's own band key does.
+  const bandRegRef = useRef<Record<string, number>>({});
   const txRef = useRef(false);
   const stRef = useRef<IcomState>(ZERO); stRef.current = st;
 
@@ -400,6 +414,18 @@ export function IcomPanel({ onReportRST, isNetwork = false }: { onReportRST?: (r
     GetCATState().then((c) => setCat(c ?? null)).catch(() => {});
   };
   const setMode = (m: string) => { setCat((c: any) => (c ? { ...c, mode: m } : c)); SetCATMode(m).catch(() => {}); };
+
+  // A band button. With the stacking registers on, ask the radio where the
+  // operator last was on that band; pressing the band it is already on steps to
+  // the next register, and the fixed frequency below is the fallback for a band
+  // or a model whose register the backend will not read — never a dead button.
+  const bandClick = (b: Band, here: boolean) => {
+    if (!bandStack) { SetCATFrequency(b.hz).catch(() => {}); return; }
+    const reg = here ? (bandRegRef.current[b.l] ?? 1) % 3 + 1 : 1;
+    IcomRecallBand(b.l, reg)
+      .then(() => { bandRegRef.current[b.l] = reg; load(); })
+      .catch(() => SetCATFrequency(b.hz).catch(() => {}));
+  };
   // Initial one-shot read of the rig's DSP snapshot on mount (the 500ms poll only
   // re-reads the cache; the backend also loads DSP on the first responsive read).
   const refresh = async () => {
@@ -592,11 +618,16 @@ export function IcomPanel({ onReportRST, isNetwork = false }: { onReportRST?: (r
       <div className="grid grid-cols-1 lg:grid-cols-2 gap-3">
       {/* Band buttons + antenna selection. */}
       <Card icon={Antenna} title={t('icmp.bandsAntenna')} accent="#0891b2">
+        <label className="flex items-center gap-1.5 mb-1.5 text-[11px] text-muted-foreground cursor-pointer select-none"
+          title={t('icmp.bandStackHint')}>
+          <input type="checkbox" checked={bandStack} onChange={toggleBandStack} className="accent-primary" />
+          {t('icmp.bandStack')}
+        </label>
         <div className="grid grid-cols-5 gap-1.5">
           {bandsFor(st.model).map((b) => {
             const here = bandOfHz(mainHz) === b.l;
             return (
-              <button key={b.l} type="button" onClick={() => SetCATFrequency(b.hz).catch(() => {})}
+              <button key={b.l} type="button" onClick={() => bandClick(b, here)}
                 title={here ? t('icmp.bandCurrent', { b: b.l }) : undefined}
                 className={cn('px-1 py-1.5 rounded-md text-[11px] font-bold border transition-colors',
                   here

frontend/src/components/MainMap.tsx

@@ -3,17 +3,16 @@ import L from 'leaflet';
 import 'leaflet/dist/leaflet.css';
 import { nightPolygon } from '../lib/greyline';
 import { gridToLatLon, gridSquareBounds, greatCirclePoints, pathBetween, destinationPoint } from '@/lib/maidenhead';
+import { loadMapBase, saveMapBase, MAP_BASE_WORLD } from '@/lib/mapBase';
 import { writeUiPref } from '@/lib/uiPref';
 import { formatDistance } from '@/lib/units';
+import { loadMapView, saveMapView, MAP_VIEW_WORLD } from '@/lib/mapView';
 
 // Persisted free-pan view of the world map (when auto-zoom is off).
-function loadMapView(): { lat: number; lon: number; zoom: number } | null {
-  try { const v = JSON.parse(localStorage.getItem('opslog.mapView') || 'null'); return v && typeof v.zoom === 'number' ? v : null; }
-  catch { return null; }
-}
-function saveMapView(m: L.Map) {
+const loadWorldView = () => loadMapView(MAP_VIEW_WORLD);
+function saveWorldView(m: L.Map) {
   const c = m.getCenter();
-  writeUiPref('opslog.mapView', JSON.stringify({ lat: c.lat, lon: c.lng, zoom: m.getZoom() }));
+  saveMapView(MAP_VIEW_WORLD, c.lat, c.lng, m.getZoom());
 }
 
 // The Main tab is built from two independent map panes that the operator can
@@ -28,6 +27,26 @@ function saveMapView(m: L.Map) {
 // unwrapLon makes a lat/lon ring continuous in longitude (each point within
 // 180° of the previous) so a polygon crossing the antimeridian doesn't snap
 // across the whole map. Coords may exceed ±180; Leaflet (worldCopyJump) is fine.
+// homeView is where a world map should open for THIS station.
+//
+// Centred on 0° a world map puts Europe in the middle and leaves an Australian
+// looking at their own country in the bottom-right corner, with the paths to
+// everywhere they work running off both edges. Centred on their own longitude
+// the same map reads the way their antenna does: the Americas to the east,
+// Europe and Africa to the west. Leaflet repeats the world horizontally
+// (worldCopyJump), so this is a choice of viewpoint and costs nothing — the
+// tiles either side are the same world, and the great-circle code already draws
+// across the seam (see unwrapLon).
+//
+// The latitude is damped, not followed: a station at 69° north centred on itself
+// would spend half the map on the Arctic. It leans towards the operator's
+// hemisphere and stops well short of the pole.
+function homeView(grid: string): [number, number] {
+  const home = gridToLatLon(grid);
+  if (!home) return [20, 0];
+  return [Math.max(-35, Math.min(45, home.lat * 0.6 + 8)), home.lon];
+}
+
 function unwrapLon(ring: [number, number][]): [number, number][] {
   const out: [number, number][] = [];
   let prev = NaN;
@@ -98,9 +117,10 @@ export const BASEMAPS: Record<BasemapKey, { label: string; url: string; attr: st
                attr: 'Tiles &copy; Esri — Source: Esri, Maxar, Earthstar Geographics',
                labelsUrl: 'https://server.arcgisonline.com/ArcGIS/rest/services/Reference/World_Boundaries_and_Places/MapServer/tile/{z}/{y}/{x}' },
 };
+// loadBasemap is the WORLD map's imagery. Each map keeps its own — see
+// lib/mapBase, which is where the keys live.
 export function loadBasemap(): BasemapKey {
-  const v = localStorage.getItem('opslog.mapBasemap');
-  return v === 'voyager' || v === 'street' || v === 'satellite' ? v : 'light';
+  return loadMapBase(MAP_BASE_WORLD, 'light');
 }
 
 // addBasemap (re)installs the imagery layer and, for satellite, its transparent
@@ -178,31 +198,50 @@ export function WorldMap({ fromGrid, toGrid, fromLabel, toLabel, beamAzimuths, b
   const autoZoomRef = useRef(autoZoom);
   useEffect(() => { autoZoomRef.current = autoZoom; }, [autoZoom]);
 
+  // WAIT FOR THE SQUARE BEFORE PAINTING.
+  //
+  // The station's own locator arrives from the profile a moment after this
+  // component mounts. Building the map immediately meant painting the world at
+  // 0°, then moving it to the operator's longitude — a screenful of tiles
+  // fetched from Esri and thrown away on every first run. The map is built once,
+  // when it knows where it is looking.
+  //
+  // Not for ever, though: an operator with no locator set (or a profile still
+  // loading after two seconds) gets the default view rather than a blank panel.
+  const [mapReady, setMapReady] = useState(() => !!gridToLatLon(fromGrid) || !!loadWorldView());
+  useEffect(() => {
+    if (mapReady) return;
+    if (gridToLatLon(fromGrid)) { setMapReady(true); return; }
+    const t = window.setTimeout(() => setMapReady(true), 2000);
+    return () => window.clearTimeout(t);
+  }, [fromGrid, mapReady]);
+
   // One-time map creation.
   useEffect(() => {
-    if (worldRef.current && !worldMap.current) {
+    if (worldRef.current && !worldMap.current && mapReady) {
       // preferCanvas: the beam lobe is a dense FAN of translucent radials — up to
       // ~120 thick strokes with a bidirectional Ultrabeam. As SVG that is ~120
       // composited paths re-rasterised on every pan, zoom and redraw, which is
       // enough to blow WebView2's raster budget and leave the window painting in
       // patches. On canvas it is a single layer.
       const m = L.map(worldRef.current, { zoomControl: true, attributionControl: true, worldCopyJump: true, preferCanvas: true })
-        .setView([20, 0], 1);
+        .setView(homeView(fromGrid), 1);
       addBasemap(m, basemap, baseLayer, labelsLayer);
       worldOverlay.current = L.layerGroup().addTo(m);
       worldMap.current = m;
-      const sv = loadMapView();
+      const sv = loadWorldView();
       if (!autoZoomRef.current && sv) m.setView([sv.lat, sv.lon], sv.zoom);
-      m.on('moveend', () => { if (!autoZoomRef.current) saveMapView(m); });
+      m.on('moveend', () => { if (!autoZoomRef.current) saveWorldView(m); });
     }
     const t = window.setTimeout(() => { worldMap.current?.invalidateSize(); }, 80);
+
     // Resizing the pane is the ONLY thing that needs invalidateSize. Calling it on
     // every overlay redraw (as before) forced a full repaint of the map each time
     // the rotor moved a degree.
     const ro = new ResizeObserver(() => worldMap.current?.invalidateSize());
     if (worldRef.current) ro.observe(worldRef.current);
     return () => { window.clearTimeout(t); ro.disconnect(); };
-  }, []);
+  }, [mapReady]);
 
   // Swap the basemap (and its optional place-name overlay) when the operator
   // picks a different one. Vector overlays (path/beam) live in Leaflet's
@@ -408,7 +447,7 @@ export function WorldMap({ fromGrid, toGrid, fromLabel, toLabel, beamAzimuths, b
           <button
             key={k}
             type="button"
-            onClick={() => { setBasemap(k); writeUiPref('opslog.mapBasemap', k); }}
+            onClick={() => { setBasemap(k); saveMapBase(MAP_BASE_WORLD, k); }}
             title={`Basemap: ${BASEMAPS[k].label}`}
             className={`px-2 py-1 text-[11px] font-medium transition-colors ${
               basemap === k ? 'bg-primary text-primary-foreground' : 'bg-card/90 text-muted-foreground hover:bg-card'
@@ -427,7 +466,7 @@ export function WorldMap({ fromGrid, toGrid, fromLabel, toLabel, beamAzimuths, b
           setAutoZoom(v);
           writeUiPref('opslog.mapAutoZoomDX', v ? '1' : '0');
           const m = worldMap.current;
-          if (!v && m) saveMapView(m);
+          if (!v && m) saveWorldView(m);
         }}
         title={autoZoom ? 'Auto-zoom to DX is ON — click for free pan/zoom (remembered)' : 'Free pan/zoom — click to auto-zoom to the DX'}
         className={`absolute top-1 right-1 z-[500] rounded-md px-2 py-1 text-[11px] font-medium shadow border backdrop-blur transition-colors ${

frontend/src/components/PSKReporterPanel.tsx

@@ -0,0 +1,329 @@
+// PSKReporterPanel — can the station I am about to call actually hear me?
+//
+// The decodes list to the left says who is transmitting. It cannot say anything
+// about the other direction, and on FT8 that is the whole question: the DX's
+// pileup is invisible from here, and a station whose region is not open to
+// yours will not hear you however many times you call.
+//
+// Every number here comes from PSK Reporter — reports uploaded by ordinary
+// stations saying "I decoded X" — over a five-minute window. Nothing is
+// inferred and nothing is remembered: when the window empties the panel says it
+// does not know, which is the honest answer and the reason each block also says
+// what it is measuring.
+//
+// The backend (internal/pskrtgt) does the analysis; this draws it and polls.
+import { useEffect, useMemo, useState } from 'react';
+import { Activity, ChevronRight } from 'lucide-react';
+import { cn } from '@/lib/utils';
+import { useI18n } from '@/lib/i18n';
+import { GetPSKAnalysis, SetPSKTarget } from '../../wailsjs/go/main/App';
+
+export type PSKEntry = {
+  call: string;
+  grid?: string;
+  snr: number;
+  offset_hz: number;
+  age_sec: number;
+};
+
+export type PSKAnalysis = {
+  target?: string;
+  mode?: string;
+  enabled: boolean;
+  online: boolean;
+  spots: number;
+  he_me: boolean;
+  he_me_seconds: number;
+  he_me_snr: number;
+  he_me_offset_hz: number;
+  target_uploads: boolean;
+  target_grid?: string;
+  near_him_count: number;
+  near_him_top?: PSKEntry[];
+  from_my_area_count: number;
+  from_my_area_top?: PSKEntry[];
+  path_open: boolean;
+  heard_by_count: number;
+  heard_near_me: number;
+  heard_near_me_top?: PSKEntry[];
+  decoded_by_count: number;
+  decoded_by_top?: PSKEntry[];
+  decoded_by_calls?: string[];
+  pileup_count: number;
+  dial_hz: number;
+  ceiling_hz: number;
+  decodes_in_window: number;
+  bins?: { offset_hz: number; count: number; avg_snr: number }[];
+  suggested_offset: number;
+};
+
+interface Props {
+  // The station to analyse and the mode it was heard on. Set by clicking a
+  // decode, or by whoever the digital application says it is calling.
+  target: string;
+  mode?: string;
+  // The operator's own dial, which is what turns a report's frequency into an
+  // audio offset. Without it the passband block has nothing to say.
+  dialHz?: number;
+  // The local decodes, for "callers you hear": stations WE are decoding that
+  // are calling the same DX. That is the competition measured at this end,
+  // which no amount of PSK Reporter data can show.
+  callers: number;
+  callerCalls?: string[];
+  onCollapse: () => void;
+}
+
+// The passband strip: 60 Hz bins, drawn from 200 Hz to 4000 Hz. The bin edges
+// have to match the backend's alignment exactly — it keys them on multiples of
+// 60 from zero, so a strip starting at 200 would ask for edges that never
+// exist and draw an empty histogram over a busy passband.
+const LO = 200, HI = 4000, STEP = 60;
+const FIRST_EDGE = Math.floor(LO / STEP) * STEP;
+const COLS = Math.floor((HI - FIRST_EDGE) / STEP);
+
+export function PSKReporterPanel({ target, mode, dialHz, callers, callerCalls, onCollapse }: Props) {
+  const { t } = useI18n();
+  const [a, setA] = useState<PSKAnalysis | null>(null);
+
+  // One second, matching the panel's own claim about how fresh it is. The call
+  // is a snapshot of an in-memory window — no query and no network of its own.
+  useEffect(() => {
+    let stop = false;
+    const tick = () => {
+      GetPSKAnalysis().then((r) => { if (!stop) setA(r as unknown as PSKAnalysis); }).catch(() => {});
+    };
+    tick();
+    const id = window.setInterval(tick, 1000);
+    return () => { stop = true; window.clearInterval(id); };
+  }, []);
+
+  // The target is re-asserted rather than sent once. The backend treats an
+  // unchanged callsign as a no-op, and this way a broker that dropped while
+  // nobody was looking comes back on its own instead of leaving a panel that
+  // is permanently, silently empty.
+  useEffect(() => {
+    SetPSKTarget(target ?? '', mode ?? '', dialHz ?? 0).catch(() => {});
+    if (!target) return;
+    const id = window.setInterval(() => {
+      SetPSKTarget(target, mode ?? '', dialHz ?? 0).catch(() => {});
+    }, 15000);
+    return () => window.clearInterval(id);
+  }, [target, mode, dialHz]);
+
+  const bins = a?.bins ?? [];
+  const maxCount = useMemo(() => bins.reduce((m, b) => Math.max(m, b.count || 0), 0) || 1, [bins]);
+  const byOffset = useMemo(() => {
+    const m = new Map<number, { count: number; avg_snr: number }>();
+    for (const b of bins) m.set(b.offset_hz, b);
+    return m;
+  }, [bins]);
+  const columns = useMemo(() => {
+    const out: { edge: number; count: number; snr: number | null }[] = [];
+    for (let i = 0; i < COLS; i++) {
+      const edge = FIRST_EDGE + i * STEP;
+      const b = byOffset.get(edge);
+      out.push({ edge, count: b?.count ?? 0, snr: b?.avg_snr ?? null });
+    }
+    return out;
+  }, [byOffset]);
+
+  // Confirmed pileup: a station we hear calling this DX that the DX has also
+  // decoded. Two independent pieces of evidence, so it is the one number here
+  // that is not a proxy for anything.
+  const confirmed = useMemo(() => {
+    const heard = new Set((a?.decoded_by_calls ?? []).map((c) => c.toUpperCase()));
+    return (callerCalls ?? []).filter((c) => heard.has(c.toUpperCase())).length;
+  }, [a?.decoded_by_calls, callerCalls]);
+
+  const snr = (v: number) => `${v > 0 ? '+' : ''}${v}`;
+
+  const Tile = ({ label, value, foot, tone, title }: {
+    label: string; value: number | string; foot: string; tone: string; title?: string;
+  }) => (
+    <div className="px-2 py-1.5 rounded-md bg-muted/40 border border-border/60" title={title}>
+      <div className="text-[9px] uppercase tracking-wide text-muted-foreground">{label}</div>
+      <div className={cn('text-lg font-bold leading-tight', tone)}>{value}</div>
+      <div className="text-[10px] text-muted-foreground">{foot}</div>
+    </div>
+  );
+
+  return (
+    <div className="w-[340px] shrink-0 flex flex-col min-h-0 border-l border-border bg-card">
+      {/* Header: what is being watched, and whether the feed is actually up. A
+          panel full of zeros means one of two very different things. */}
+      <div className="flex items-center gap-2 px-2.5 py-2 border-b border-border shrink-0">
+        <Activity className="size-4 text-primary shrink-0" />
+        <span className="text-xs font-semibold uppercase tracking-wider text-muted-foreground">
+          {t('psk.title')}
+        </span>
+        {target && <span className="text-xs font-mono text-foreground truncate">→ {target}</span>}
+        <span className="ml-auto flex items-center gap-2 text-[10px] shrink-0">
+          {a?.target && a.spots > 0 && (
+            <span className="text-muted-foreground" title={t('psk.spotsTip')}>{t('psk.spots', { n: a.spots })}</span>
+          )}
+          {a?.enabled === false
+            ? <span className="text-muted-foreground">{t('psk.off')}</span>
+            : a?.online
+              ? <span className="text-success">● {t('psk.online')}</span>
+              : <span className="text-muted-foreground">○ {t('psk.offline')}</span>}
+          <button type="button" onClick={onCollapse} title={t('psk.hide')}
+            className="p-0.5 rounded hover:bg-muted text-muted-foreground hover:text-foreground">
+            <ChevronRight className="size-4" />
+          </button>
+        </span>
+      </div>
+
+      <div className="flex-1 min-h-0 overflow-y-auto px-2.5 py-2 space-y-3">
+        {a?.enabled === false ? (
+          <p className="text-xs text-muted-foreground italic">{t('psk.enableHint')}</p>
+        ) : !target ? (
+          <p className="text-xs text-muted-foreground italic">{t('psk.pickHint')}</p>
+        ) : (
+          <>
+            {/* ── The answer ──────────────────────────────────────────── */}
+            <div className="flex items-center gap-3">
+              <div className={cn('shrink-0 size-8 rounded-full border flex items-center justify-center text-base',
+                a?.he_me ? 'bg-success/20 border-success/50 text-success'
+                  : a?.path_open ? 'bg-warning/20 border-warning/50 text-warning'
+                    : 'bg-muted border-border text-muted-foreground')}>
+                {a?.he_me ? '✓' : a?.path_open ? '≈' : '·'}
+              </div>
+              <div className="min-w-0">
+                {a?.he_me ? (
+                  <>
+                    <div className="text-sm font-semibold text-success">{t('psk.heardYou', { s: a.he_me_seconds })}</div>
+                    <div className="text-[11px] font-mono text-muted-foreground">
+                      {snr(a.he_me_snr)} dB{a.he_me_offset_hz > 0 ? ` @ +${a.he_me_offset_hz} Hz` : ''}
+                    </div>
+                  </>
+                ) : a?.path_open ? (
+                  <>
+                    <div className="text-sm font-semibold text-warning">{t('psk.pathOpen')}</div>
+                    <div className="text-[11px] text-muted-foreground">{t('psk.pathOpenSub', { n: a.from_my_area_count })}</div>
+                  </>
+                ) : (
+                  <>
+                    <div className="text-sm font-semibold text-muted-foreground">{t('psk.notYet')}</div>
+                    <div className="text-[11px] text-muted-foreground">{t('psk.notYetSub')}</div>
+                  </>
+                )}
+              </div>
+            </div>
+
+            {/* Your signal reported next to him. Only when he has not decoded
+                you himself — that is strictly stronger evidence, and two
+                banners saying the same thing differently is noise. */}
+            {!a?.he_me && (a?.near_him_count ?? 0) > 0 && a?.target_grid && (
+              <div className="px-2 py-1.5 rounded-md bg-info/10 border border-info/30">
+                <div className="flex items-baseline justify-between gap-2 mb-0.5">
+                  <span className="text-[10px] uppercase tracking-wide font-semibold text-info">
+                    ✓ {t('psk.nearHim', { g: a.target_grid })}
+                  </span>
+                  <span className="text-[10px] text-muted-foreground">{t('psk.nRx', { n: a.near_him_count })}</span>
+                </div>
+                <div className="flex flex-wrap gap-x-2 font-mono text-[11px]">
+                  {(a.near_him_top ?? []).map((h) => (
+                    <span key={h.call} className="text-info" title={`${h.call} ${h.grid ?? ''} · ${h.age_sec}s`}>
+                      {h.call} <span className="text-muted-foreground">{snr(h.snr)}</span>
+                    </span>
+                  ))}
+                </div>
+              </div>
+            )}
+
+            {/* ── The four numbers ────────────────────────────────────── */}
+            <div className="grid grid-cols-2 gap-1.5">
+              <Tile label={t('psk.tFromArea')} value={a?.from_my_area_count ?? 0} foot={t('psk.tFromAreaFoot')}
+                tone="text-success"
+                title={(a?.from_my_area_top ?? []).map((h) => `${h.call} (${h.grid ?? '?'}) ${snr(h.snr)}`).join(' · ')} />
+              <Tile label={t('psk.tPileup')} value={a?.pileup_count ?? 0} foot={t('psk.tPileupFoot')}
+                tone="text-primary" title={t('psk.tPileupTip')} />
+              <Tile label={t('psk.tHeardNear')} value={a?.heard_near_me ?? 0} foot={t('psk.tHeardNearFoot')}
+                tone="text-info"
+                title={t('psk.tHeardNearTip', { n: a?.heard_by_count ?? 0 })} />
+              <Tile label={t('psk.tCallers')} value={confirmed > 0 ? `${callers} (${confirmed})` : callers}
+                foot={confirmed > 0 ? t('psk.tCallersFootConf') : t('psk.tCallersFoot')}
+                tone="text-warning" title={t('psk.tCallersTip')} />
+            </div>
+
+            {/* The one thing that turns an empty panel from a verdict into a
+                missing measurement. */}
+            {a?.target_uploads ? (
+              <div className="text-[11px] text-success">✓ {t('psk.uploads')}</div>
+            ) : (
+              <div className="px-2 py-1.5 rounded-md bg-warning/10 border border-warning/30 text-[11px] text-warning">
+                ⚠ {t('psk.noUploads', { c: target })}
+              </div>
+            )}
+
+            {/* ── Who near you he is hearing ──────────────────────────── */}
+            <div>
+              <div className="text-[10px] uppercase tracking-wide text-muted-foreground mb-0.5">{t('psk.fromAreaList')}</div>
+              {(a?.from_my_area_top ?? []).length > 0 ? (
+                <div className="flex flex-col gap-0.5 font-mono text-[11px]">
+                  {(a?.from_my_area_top ?? []).slice(0, 4).map((h) => (
+                    <div key={h.call} className="flex items-baseline gap-2 truncate"
+                      title={t('psk.rowTip', { c: h.call, g: h.grid ?? '?', s: h.age_sec, d: snr(h.snr) })}>
+                      <span className="font-semibold text-foreground w-20 truncate">{h.call}</span>
+                      <span className="text-muted-foreground w-12">({(h.grid ?? '?').slice(0, 4)})</span>
+                      <span className="text-success w-14">{snr(h.snr)} dB</span>
+                      {h.offset_hz > 0 && h.offset_hz < 10000 && (
+                        <span className="ml-auto text-muted-foreground whitespace-nowrap">@ +{h.offset_hz} Hz</span>
+                      )}
+                    </div>
+                  ))}
+                </div>
+              ) : (
+                <div className="text-[11px] text-muted-foreground italic">{t('psk.fromAreaEmpty')}</div>
+              )}
+            </div>
+
+            {/* ── His passband ────────────────────────────────────────── */}
+            <div>
+              <div className="flex items-baseline justify-between gap-2 mb-1">
+                <span className="text-[10px] uppercase tracking-wide text-muted-foreground">{t('psk.passband')}</span>
+                <span className="text-[10px] font-mono text-muted-foreground">
+                  {(a?.ceiling_hz ?? 0) > 0
+                    ? t('psk.ceiling', { hz: a!.ceiling_hz, n: a!.decodes_in_window })
+                    : (a?.decodes_in_window ?? 0) > 0 ? t('psk.noDial') : t('psk.noDecodes')}
+                </span>
+              </div>
+              <div className="relative flex items-end gap-px h-10 rounded bg-muted/40 px-1 py-0.5 overflow-hidden">
+                {columns.map((c) => {
+                  const ratio = c.count / maxCount;
+                  return (
+                    <div key={c.edge}
+                      className={cn('flex-1 min-w-0 rounded-sm',
+                        c.count === 0 ? 'bg-border'
+                          : ratio > 0.66 ? 'bg-primary'
+                            : ratio > 0.33 ? 'bg-primary/70' : 'bg-primary/40')}
+                      style={{ height: `${Math.max(2, Math.round(ratio * 36))}px` }}
+                      title={`${c.edge}-${c.edge + STEP} Hz · ${c.count}${c.snr !== null ? ` @ ${c.snr.toFixed(0)} dB` : ''}`} />
+                  );
+                })}
+                {(a?.suggested_offset ?? 0) > 0 && (
+                  <div className="absolute top-0 bottom-0 w-0.5 bg-success pointer-events-none"
+                    style={{ left: `${((a!.suggested_offset - LO) / (HI - LO)) * 100}%`, boxShadow: '0 0 4px currentColor' }}
+                    title={t('psk.tryOffset', { hz: a!.suggested_offset })} />
+                )}
+              </div>
+              <div className="relative h-3 mt-0.5 text-[9px] font-mono text-muted-foreground">
+                {[1000, 2000, 3000, 4000].map((hz) => (
+                  <span key={hz} className="absolute whitespace-nowrap"
+                    style={{ left: `${((hz - LO) / (HI - LO)) * 100}%`, transform: `translateX(${hz === HI ? '-100%' : '-50%'})` }}>
+                    {hz}
+                  </span>
+                ))}
+              </div>
+              {(a?.suggested_offset ?? 0) > 0 && (
+                <div className="text-center text-[11px] font-mono text-success mt-0.5">
+                  🎯 {t('psk.tryOffset', { hz: a!.suggested_offset })}
+                </div>
+              )}
+            </div>
+          </>
+        )}
+      </div>
+    </div>
+  );
+}

frontend/src/components/QSOContextMenu.tsx

@@ -34,8 +34,8 @@ const UPLOAD_TARGETS: { service: string; name: string }[] = [
   { service: 'hrdlog', name: 'HRDLog.net' },
   { service: 'eqsl', name: 'eQSL.cc' },
   { service: 'lotw', name: 'LoTW' },
-  { service: 'hamlog', name: 'HAMLOG.online' },
   { service: 'hamqth', name: 'HamQTH' },
+  { service: 'cloudlog', name: 'Cloudlog / Wavelog' },
 ];
 
 // Lightweight right-click menu for the QSO grids. AG Grid's native context

frontend/src/components/QSOEditModal.tsx

@@ -1,7 +1,7 @@
 import { useEffect, useMemo, useRef, useState } from 'react';
 import { Trash2, Search, Loader2, CalendarDays } from 'lucide-react';
 import { LookupCallsign, LookupCallsignFresh, DXCCForCountry, GetAwardDefs, ComputeQSOAwardRefs, GetListsSettings, OpenExternalURL, SetOpsLogQSLReceived } from '../../wailsjs/go/main/App';
-import { rstOptions, type RSTLists } from '@/lib/rst';
+import { rstOptions, stepRST, type RSTLists } from '@/lib/rst';
 import { AwardRefSelector } from '@/components/AwardRefSelector';
 import { AdifExtrasEditor } from '@/components/AdifExtrasEditor';
 import { applyAwardRefs } from '@/lib/awardRefs';
@@ -598,9 +598,13 @@ export function QSOEditModal({ qso, onSave, onDelete, onClose, countries = [], b
                     value={draft.callsign ?? ''} onChange={(e) => set('callsign', e.target.value)} />
                 </div>
                 <div className="flex flex-col w-20"><Label>S</Label>
-                  <Combobox value={draft.rst_sent ?? ''} options={rstOptions(draft.mode ?? '', rstLists)} commitOnType onChange={(v) => set('rst_sent', v)} /></div>
+                  <Combobox value={draft.rst_sent ?? ''} options={rstOptions(draft.mode ?? '', rstLists)} commitOnType
+                    onChange={(v) => set('rst_sent', v)}
+                    onWheelStep={(d) => set('rst_sent', stepRST(draft.rst_sent ?? '', d, draft.mode ?? ''))} /></div>
                 <div className="flex flex-col w-20"><Label>R</Label>
-                  <Combobox value={draft.rst_rcvd ?? ''} options={rstOptions(draft.mode ?? '', rstLists)} commitOnType onChange={(v) => set('rst_rcvd', v)} /></div>
+                  <Combobox value={draft.rst_rcvd ?? ''} options={rstOptions(draft.mode ?? '', rstLists)} commitOnType
+                    onChange={(v) => set('rst_rcvd', v)}
+                    onWheelStep={(d) => set('rst_rcvd', stepRST(draft.rst_rcvd ?? '', d, draft.mode ?? ''))} /></div>
                 <Button type="button" variant="outline" className="h-10" onClick={fetchLookup} disabled={looking}
                   title={t('qedit.fetchTitle')}>
                   {looking ? <Loader2 className="size-4 animate-spin" /> : <Search className="size-4" />} {t('qedit.fetch')}

frontend/src/components/RotorCompassClassic.tsx

@@ -0,0 +1,381 @@
+// RotorCompassClassic — the original rotor dial, kept as an option.
+//
+// Settings → Rotator chooses between this and the current compass. It was
+// replaced rather than removed because the two answer the same question in
+// different ways: this one is a small light-map dial with the quick turns in a
+// column beside it, and an operator used to it should not have to relearn a
+// panel to keep working.
+//
+// An azimuthal-equidistant rotor display (à la 4O3A RotorGenius).
+//
+// A world map centred on the operator's QTH (north up) fills the dial, ringed by
+// a green azimuth bezel. A green needle shows the antenna heading (two needles
+// when an Ultrabeam is bidirectional, the opposite one when reversed); a small
+// red marker on the bezel shows the short-path bearing to the DX. Click the dial
+// to turn the antenna there.
+import { useEffect, useMemo, useRef, useState } from 'react';
+import { geoAzimuthalEquidistant, geoPath, geoGraticule10 } from 'd3-geo';
+import { feature } from 'topojson-client';
+import landTopo from 'world-atlas/land-110m.json';
+import { Compass, X, Play, Square } from 'lucide-react';
+import { cn } from '@/lib/utils';
+import { useI18n } from '@/lib/i18n';
+
+// Decode the coastline outline once (≈110 m simplified land polygons).
+const LAND = feature(landTopo as any, (landTopo as any).objects.land);
+const GRATICULE = geoGraticule10();
+
+interface Props {
+  bearing?: number | null;       // short-path azimuth to DX (deg)
+  headings: number[];            // radiating heading(s) — rotor + Ultrabeam pattern
+  boomHeading?: number | null;   // mechanical boom (rotor) azimuth, shown grey when it differs
+  pattern?: 'normal' | 'reverse' | 'bi' | null; // Ultrabeam pattern (for the badge)
+  centerLat?: number | null;     // operator latitude (projection centre)
+  centerLon?: number | null;     // operator longitude
+  rotorEnabled?: boolean;
+  rotors?: string[];             // logical rotor names; >1 → show a selector
+  activeRotor?: number;          // index of the selected rotor (0-based)
+  onSelectRotor?: (i: number) => void; // switch the active rotor
+  onGoto?: (az: number) => void; // click-to-turn
+  onClose?: () => void;
+  // Quick-turn buttons and the azimuth box, shown only where the caller wants
+  // them: Station Control draws its own GoTo/Stop around this compass, and two
+  // sets of the same controls side by side would be nothing but confusing.
+  presets?: { label: string; azimuth: number }[];
+  onStop?: () => void;
+}
+
+const SIZE = 168;
+const C = SIZE / 2;
+const R = C - 6;          // outer bezel radius
+const MAP_R = R - 6;      // map/clip radius (inside the bezel)
+
+function pt(az: number, radius: number): [number, number] {
+  const a = ((az - 90) * Math.PI) / 180;
+  return [C + radius * Math.cos(a), C + radius * Math.sin(a)];
+}
+
+export function RotorCompassClassic({ bearing, headings, boomHeading, pattern, centerLat, centerLon, rotorEnabled, rotors, activeRotor, onSelectRotor, onGoto, onClose, presets, onStop }: Props) {
+  const { t } = useI18n();
+  // Raw text, not a number: binding the input to a normalised value makes
+  // Backspace fight the operator on the way from "230" to "23". It is parsed
+  // when it is sent, and only then.
+  const [azText, setAzText] = useState('');
+  const showControls = !!(presets || onStop);
+
+  // Which preset was just pressed, so it can light up for a moment.
+  //
+  // A rotor takes seconds to start moving and the needle barely twitches at
+  // first, so without this the only answer to "did that register?" is to press
+  // it again — which is how an antenna ends up ordered somewhere twice. The
+  // acknowledgement has to come from the button itself, at once.
+  const [flashIdx, setFlashIdx] = useState<number | null>(null);
+  const flashTimer = useRef<number | undefined>(undefined);
+  useEffect(() => () => window.clearTimeout(flashTimer.current), []);
+  const pressPreset = (i: number, az: number) => {
+    if (!onGoto) return;
+    setFlashIdx(i);
+    window.clearTimeout(flashTimer.current);
+    flashTimer.current = window.setTimeout(() => setFlashIdx(null), 450);
+    onGoto(az);
+  };
+
+  // Stop needs the same acknowledgement, for the same reason and one more: it
+  // is pressed when something is already wrong, and a button that stays inert
+  // gets hit again and again. Its own flag, so stopping does not blank a preset
+  // that is still lit.
+  const [stopFlash, setStopFlash] = useState(false);
+  const stopTimer = useRef<number | undefined>(undefined);
+  useEffect(() => () => window.clearTimeout(stopTimer.current), []);
+  const pressStop = () => {
+    if (!onStop) return;
+    setStopFlash(true);
+    window.clearTimeout(stopTimer.current);
+    stopTimer.current = window.setTimeout(() => setStopFlash(false), 450);
+    onStop();
+  };
+
+  // 0-359 and nothing else. 360 is refused rather than folded to 0 — it is
+  // almost always a typo for 36 or 306, and a rotor swinging through north on a
+  // slip of the finger is worth one rejected keypress.
+  const sendAz = () => {
+    const s = azText.trim();
+    if (s === '' || !onGoto) return;
+    const n = Number(s);
+    if (!Number.isFinite(n) || !Number.isInteger(n) || n < 0 || n > 359) return;
+    onGoto(n);
+    setAzText('');
+  };
+
+  const cardinals = useMemo(
+    () => [ { d: 0, l: 'N' }, { d: 45, l: 'NE' }, { d: 90, l: 'E' }, { d: 135, l: 'SE' },
+            { d: 180, l: 'S' }, { d: 225, l: 'SW' }, { d: 270, l: 'W' }, { d: 315, l: 'NW' } ],
+    [],
+  );
+
+  // Project the world centred on the QTH (north up; antipode at the bezel).
+  const { land, grat } = useMemo(() => {
+    if (centerLat == null || centerLon == null) return { land: '', grat: '' };
+    const proj = geoAzimuthalEquidistant()
+      .rotate([-centerLon, -centerLat])
+      .clipAngle(179.9)
+      .scale(MAP_R / Math.PI)
+      .translate([C, C]);
+    const path = geoPath(proj as any);
+    return { land: path(LAND as any) || '', grat: path(GRATICULE as any) || '' };
+  }, [centerLat, centerLon]);
+
+  function handleClick(e: React.MouseEvent<SVGSVGElement>) {
+    if (!onGoto) return;
+    const rect = e.currentTarget.getBoundingClientRect();
+    const x = ((e.clientX - rect.left) / rect.width) * SIZE - C;
+    const y = ((e.clientY - rect.top) / rect.height) * SIZE - C;
+    let az = (Math.atan2(y, x) * 180) / Math.PI + 90;
+    az = ((az % 360) + 360) % 360;
+    onGoto(Math.round(az));
+  }
+
+  const headLabel = headings.length ? headings[0] : null;
+
+  // Short and long path to the DX, in figures.
+  //
+  // The bezel already carries the short path as a red marker, but a marker is a
+  // direction, not a number — the same pair sits in the status bar at 10px and
+  // operators reported not being able to read it. It lives here because it
+  // belongs to the compass: every place that draws one gets the readout, instead
+  // of each caller inventing its own. Clickable when the caller can turn, like
+  // the status bar's. Built as a value because it is placed in one of two
+  // columns depending on whether the controls are shown.
+  const pathReadout = (
+    <div className="flex gap-1.5 mt-2 font-mono w-full">
+      {([['SP', bearing ?? null], ['LP', bearing == null ? null : (bearing + 180) % 360]] as const).map(([lbl, az]) => (
+        <button key={lbl} type="button" disabled={az == null || !onGoto}
+          onClick={() => { if (az != null && onGoto) onGoto(Math.round(az)); }}
+          title={az == null ? '' : `${lbl} ${Math.round(az)}°`}
+          className={
+            'flex-1 rounded-md border py-1 text-xs font-semibold tabular-nums transition-colors active:scale-95 ' +
+            (az == null
+              ? 'border-border text-muted-foreground/50 cursor-not-allowed'
+              : onGoto
+                ? 'border-info-border text-info-muted-foreground hover:bg-info-muted cursor-pointer'
+                : 'border-border text-muted-foreground cursor-default')
+          }>
+          {lbl} {az == null ? '—' : `${Math.round(az)}°`}
+        </button>
+      ))}
+    </div>
+  );
+
+  return (
+    <section className="flex flex-col h-full min-h-0 rounded-lg border border-border bg-card overflow-hidden">
+      {/* Header — matches the WinKeyer / Voice keyer panels. */}
+      <div className="flex items-center gap-2 px-3 py-1.5 bg-muted/40 border-b border-border shrink-0">
+        <Compass className="size-4 text-primary shrink-0" />
+        <span className="text-xs font-semibold uppercase tracking-wider text-muted-foreground">Rotor</span>
+        <span className={cn('size-2 rounded-full', rotorEnabled ? 'bg-success' : 'bg-muted-foreground/40')}
+          title={rotorEnabled ? 'Rotator connected' : 'Rotator disabled'} />
+        <div className="flex-1" />
+        {pattern && (
+          <span
+            className={cn('px-1 py-px rounded text-[9px] font-bold tracking-wide',
+              pattern === 'reverse' ? 'bg-warning-muted text-warning-muted-foreground'
+                : pattern === 'bi' ? 'bg-info-muted text-info-muted-foreground'
+                : 'bg-success-muted text-success-muted-foreground')}
+            title={pattern === 'reverse' ? 'Ultrabeam reversed — radiates opposite the boom'
+              : pattern === 'bi' ? 'Ultrabeam bidirectional — radiates both ways'
+              : 'Ultrabeam normal'}>
+            {pattern === 'reverse' ? 'REV' : pattern === 'bi' ? 'BI' : 'NORM'}
+          </span>
+        )}
+        <span className="font-mono text-sm font-bold text-success tabular-nums">
+          {headLabel != null ? `${Math.round(headLabel).toString().padStart(3, '0')}°` : '—'}
+        </span>
+        {onClose && (
+          <button className="text-muted-foreground hover:text-foreground" title="Hide rotor" onClick={onClose}>
+            <X className="size-3.5" />
+          </button>
+        )}
+      </div>
+
+      {/* Multiple rotors — pick which one the dial shows and turns. */}
+      {rotors && rotors.length > 1 && (
+        <div className="flex flex-wrap gap-1 px-2 pt-1.5">
+          {rotors.map((nm, i) => {
+            const active = (activeRotor ?? 0) === i;
+            const label = nm?.trim() || `Rotor ${i + 1}`;
+            return (
+              <button
+                key={i}
+                onClick={() => onSelectRotor?.(i)}
+                className={cn(
+                  'flex-1 min-w-[48px] px-1.5 py-0.5 rounded text-[10px] font-semibold truncate transition-colors',
+                  active
+                    ? 'bg-success text-success-foreground'
+                    : 'bg-muted text-muted-foreground hover:bg-muted/70',
+                )}
+                title={label}
+              >
+                {label}
+              </button>
+            );
+          })}
+        </div>
+      )}
+
+      {/* Dial on the left, controls on the right. The controls column is sized to
+          fit WITHIN the dial's height: the widget sits in a row whose height is
+          set by the entry strip, so it may grow sideways but never downwards. */}
+      <div className="flex items-start gap-2 p-2 min-h-0">
+      {/* flex-col: the readout goes BELOW the dial. This wrapper was a row, so a
+          sibling of the <svg> landed beside it. */}
+      <div className="flex flex-col items-center justify-center min-h-0 shrink-0">
+        <svg
+          viewBox={`0 0 ${SIZE} ${SIZE}`}
+          className={onGoto ? 'cursor-pointer select-none' : 'select-none'}
+          style={{ width: SIZE, height: SIZE }}
+          onClick={handleClick}
+        >
+          <defs>
+            <clipPath id="rotorDial"><circle cx={C} cy={C} r={MAP_R} /></clipPath>
+          </defs>
+          {/* water + world map, clipped to the dial */}
+          <circle cx={C} cy={C} r={MAP_R} fill="#d3e7f1" />
+          <g clipPath="url(#rotorDial)">
+            {grat && <path d={grat} fill="none" stroke="#9cc0d6" strokeWidth={0.4} opacity={0.7} />}
+            {land && <path d={land} fill="#dfe2cf" stroke="#9aa589" strokeWidth={0.4} />}
+          </g>
+          {/* green azimuth bezel */}
+          <circle cx={C} cy={C} r={R} fill="none" stroke="#16a34a" strokeWidth={5} />
+
+          {/* ticks every 10°, longer at 30° */}
+          {Array.from({ length: 36 }, (_, i) => i * 10).map((d) => {
+            const major = d % 30 === 0;
+            const [x1, y1] = pt(d, MAP_R);
+            const [x2, y2] = pt(d, MAP_R - (major ? 7 : 4));
+            return <line key={d} x1={x1} y1={y1} x2={x2} y2={y2} stroke="#475569" strokeWidth={major ? 1 : 0.6} opacity={0.7} />;
+          })}
+          {/* cardinal labels + degree numbers at 45° */}
+          {cardinals.map(({ d, l }) => {
+            const [x, y] = pt(d, MAP_R - 13);
+            return <text key={l} x={x} y={y} textAnchor="middle" dominantBaseline="central" className="fill-slate-700" style={{ fontSize: l.length > 1 ? 7 : 9, fontWeight: 700 }}>{l}</text>;
+          })}
+
+          {/* DX short-path bearing → small red marker on the bezel */}
+          {bearing != null && (() => { const [x, y] = pt(bearing, MAP_R); return (
+            <circle cx={x} cy={y} r={3} fill="#dc2626" stroke="#fff" strokeWidth={1} />
+          ); })()}
+
+          {/* mechanical boom (rotor) heading — grey dashed needle, shown when the
+              Ultrabeam radiates somewhere other than the boom (reverse/bi) so the
+              operator sees where the antenna physically points vs where it boom-sits */}
+          {boomHeading != null && pattern && pattern !== 'normal' && (() => {
+            const [x, y] = pt(boomHeading, MAP_R - 2);
+            return (
+              <g>
+                <title>Boom (rotor) {Math.round(boomHeading)}°</title>
+                <line x1={C} y1={C} x2={x} y2={y} stroke="#64748b" strokeWidth={2} strokeDasharray="3 3" strokeLinecap="round" />
+                <circle cx={x} cy={y} r={3} fill="#64748b" stroke="#fff" strokeWidth={1} />
+              </g>
+            );
+          })()}
+
+          {/* radiating heading needle(s) — green; two when bidirectional */}
+          {headings.map((h, i) => { const [x, y] = pt(h, MAP_R - 2); return (
+            <g key={i}>
+              <line x1={C} y1={C} x2={x} y2={y} stroke="#15803d" strokeWidth={3} strokeLinecap="round" opacity={i === 0 ? 1 : 0.55} />
+              <polygon points={`${x},${y} ${pt(h - 5, MAP_R - 12).join(',')} ${pt(h + 5, MAP_R - 12).join(',')}`} fill="#15803d" opacity={i === 0 ? 1 : 0.55} />
+            </g>
+          ); })}
+          <circle cx={C} cy={C} r={3.5} fill="#15803d" stroke="#fff" strokeWidth={1} />
+        </svg>
+
+        {/* With the controls column present the readout goes at the FOOT OF IT
+            instead: the dial sets the widget's height, the controls are shorter
+            than the dial, and that leftover space is exactly the right size for
+            the pair. Under the dial it would push the whole widget taller. */}
+        {!showControls && pathReadout}
+      </div>
+
+      {/* Quick turns + free azimuth + Stop. */}
+      {showControls && (
+        <div className="flex flex-col gap-1.5 flex-1 min-w-0">
+          {/* Two columns so six regions fit beside the dial rather than under
+              it. An operator with fewer keeps the same compact block. */}
+          {!!presets?.length && (
+            <div className="grid grid-cols-2 gap-1">
+              {presets.map((p, i) => (
+                <button
+                  key={`${p.label}-${i}`}
+                  type="button"
+                  disabled={!onGoto}
+                  onClick={() => pressPreset(i, p.azimuth)}
+                  title={`${p.label} — ${p.azimuth}°`}
+                  className={cn(
+                    'rounded-md border py-1 text-xs font-semibold truncate transition-all duration-150 active:scale-95',
+                    flashIdx === i
+                      // Lit, and showing the azimuth it just sent: the label alone
+                      // would only say the press landed, not what was ordered.
+                      ? 'border-success bg-success text-success-foreground scale-95'
+                      : 'border-border bg-muted/40',
+                    onGoto && flashIdx !== i ? 'hover:bg-muted' : '',
+                    !onGoto ? 'opacity-50 cursor-not-allowed' : '',
+                  )}
+                >
+                  {flashIdx === i ? `${p.azimuth}°` : p.label}
+                </button>
+              ))}
+            </div>
+          )}
+
+          {/* Free azimuth: Enter sends, so the whole thing is type-three-digits
+              -and-go without reaching for the mouse. */}
+          <div className="flex gap-1">
+            <input
+              type="text"
+              inputMode="numeric"
+              value={azText}
+              onChange={(e) => setAzText(e.target.value.replace(/[^0-9]/g, '').slice(0, 3))}
+              onKeyDown={(e) => { if (e.key === 'Enter') { e.preventDefault(); sendAz(); } }}
+              placeholder={t('rotor.azPh')}
+              title={t('rotor.azTitle')}
+              disabled={!onGoto}
+              className="min-w-0 flex-1 rounded-md border border-border bg-background px-2 py-1 text-xs font-mono tabular-nums text-center disabled:opacity-50"
+            />
+            <button
+              type="button"
+              onClick={sendAz}
+              disabled={!onGoto || azText.trim() === ''}
+              title={t('rotor.go')}
+              className="flex items-center gap-1 rounded-md border border-success/60 bg-success-muted px-2 py-1 text-xs font-bold text-success-muted-foreground transition-transform hover:bg-success/25 active:scale-95 disabled:opacity-40 disabled:cursor-not-allowed"
+            >
+              <Play className="size-3" /> {t('rotor.go')}
+            </button>
+          </div>
+
+          {onStop && (
+            <button
+              type="button"
+              onClick={pressStop}
+              title={t('rotor.stop')}
+              className={cn(
+                'flex items-center justify-center gap-1.5 rounded-md border py-1 text-xs font-bold transition-all duration-150 active:scale-95',
+                stopFlash
+                  // Solid, not a tint: STOP reads the same in both languages, so
+                  // the fill is the whole acknowledgement.
+                  ? 'border-destructive bg-destructive text-destructive-foreground scale-95'
+                  : 'border-destructive/60 bg-destructive/15 text-destructive hover:bg-destructive/25',
+              )}
+            >
+              <Square className="size-3 fill-current" /> {t('rotor.stop')}
+            </button>
+          )}
+
+          {/* mt-auto: the readout sits at the FOOT of the column, level with the
+              bottom of the dial, instead of floating under the Stop button. */}
+          <div className="mt-auto">{pathReadout}</div>
+        </div>
+      )}
+      </div>
+    </section>
+  );
+}

frontend/src/components/SatellitePanel.tsx

@@ -0,0 +1,791 @@
+import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
+import L from 'leaflet';
+import 'leaflet/dist/leaflet.css';
+import { Satellite as SatIcon, Radio, ArrowUp, ArrowDown, PanelRightClose, PanelRightOpen, Radar } from 'lucide-react';
+import {
+  GetSatelliteBirds, GetSatellitePositions, GetSatellitePasses, GetSatelliteTuning,
+  GetSatelliteGroundTrack, GetSatelliteTLEInfo, GetSatelliteNextPass, GetSatelliteSkyTrack,
+  StartSatelliteTracking, StopSatelliteTracking, GetSatelliteTracking,
+} from '../../wailsjs/go/main/App';
+import { EventsOn } from '../../wailsjs/runtime/runtime';
+import { Button } from '@/components/ui/button';
+import { gridToLatLon, splitAtAntimeridian } from '@/lib/maidenhead';
+import { BASEMAPS, type BasemapKey } from '@/components/MainMap';
+import { loadMapView, saveMapView } from '@/lib/mapView';
+import { loadMapBase, saveMapBase, MAP_BASE_SAT } from '@/lib/mapBase';
+import { writeUiPref } from '@/lib/uiPref';
+import { SkyPlot, type SkyPoint } from '@/components/SkyPlot';
+import { cn } from '@/lib/utils';
+import { useI18n } from '@/lib/i18n';
+
+// Satellites — where the birds are, and what to do with the radio.
+//
+// The tab answers the three questions a pass poses, and answers them where they
+// are asked: how long have I got (the countdown), where is it (the map), what
+// do I tune (the readout). Everything else — which satellites to follow, where
+// the elements come from, the rotator — is maintenance and lives in Settings.
+// During a pass there is no time to configure anything.
+
+type Bird = {
+  name: string; norad: number; geostationary: boolean; favorite: boolean;
+  has_elements: boolean; element_name: string; epoch_age_h: number;
+  transponders?: {
+    label: string; mode: string; down_lo: number; down_hi: number;
+    up_lo: number; up_hi: number; inverting: boolean; ctcss: number; linear: boolean;
+  }[];
+};
+type Position = {
+  name: string; lat: number; lon: number; alt_km: number; footprint_km: number;
+  az: number; el: number; range_km: number; range_rate: number;
+};
+type Pass = {
+  name: string; aos: string; los: string; aos_az: number; los_az: number;
+  max_el: number; max_el_az: number; max_el_at: string; duration_s: number;
+};
+type PassInfo = {
+  name: string; has_pass: boolean; in_pass: boolean;
+  aos: string; los: string; aos_az: number; los_az: number;
+  max_el: number; max_el_az: number; max_el_at: string; duration_s: number;
+};
+type Tuning = {
+  name: string; transponder: string; mode: string;
+  nominal_down: number; nominal_up: number; down_hz: number; up_hz: number;
+  ctcss: number; inverting: boolean;
+  az: number; el: number; range_km: number; range_rate: number; visible: boolean;
+  lat: number; lon: number; alt_km: number; footprint_km: number;
+};
+type Track = {
+  on: boolean; name: string; transponder: string; mode: string;
+  nominal_down: number; nominal_up: number; down_hz: number; up_hz: number;
+  az: number; el: number; visible: boolean;
+  radio: string; // "sat" | "downlink-only" | ""
+  error: string;
+  rot_on: boolean; rot_az: number; rot_el: number; rot_live: boolean;
+};
+
+const MAP_VIEW_SAT = 'opslog.satMapView';
+
+// The readout column. Wide enough by default to hold a frequency to the hertz
+// without wrapping, and adjustable because how much map an operator wants
+// against how much detail is theirs to decide — a station watching a footprint
+// cross an ocean wants the map, one working a pass wants the numbers.
+const SIDE_W_KEY = 'opslog.satSideWidth';
+const SIDE_SHOWN_KEY = 'opslog.satSideShown';
+const SIDE_W_DEFAULT = 336, SIDE_W_MIN = 240, SIDE_W_MAX = 720;
+const SKY_SHOWN_KEY = 'opslog.satSkyShown';
+
+const fmtHz = (hz: number) => {
+  if (!hz) return '—';
+  // Six decimals: a linear transponder is tuned to the hundred hertz, and the
+  // Doppler correction moves the last three digits every second.
+  return (hz / 1e6).toFixed(6).replace(/(\d)(?=(\d{3})+\.)/g, '$1 ');
+};
+const fmtDeg = (d: number) => `${d.toFixed(1)}°`;
+const fmtKm = (km: number) => `${Math.round(km).toLocaleString()} km`;
+const hhmm = (iso: string) => {
+  const d = new Date(iso);
+  return Number.isNaN(d.getTime()) ? '—' : d.toISOString().slice(11, 16);
+};
+const hhmmss = (iso: string) => {
+  const d = new Date(iso);
+  return Number.isNaN(d.getTime()) ? '—' : d.toISOString().slice(11, 19);
+};
+const inMin = (iso: string) => Math.round((Date.parse(iso) - Date.now()) / 60000);
+
+// A countdown an operator can act on. Seconds while they matter, then minutes,
+// then hours — nobody needs "1h 04m 37s", and nobody wants "0m" for the last
+// fifty seconds before a satellite rises.
+function fmtCountdown(ms: number): string {
+  const s = Math.max(0, Math.round(ms / 1000));
+  if (s < 60) return `${s}s`;
+  if (s < 3600) return `${Math.floor(s / 60)}m ${String(s % 60).padStart(2, '0')}s`;
+  const h = Math.floor(s / 3600);
+  return `${h}h ${String(Math.floor((s % 3600) / 60)).padStart(2, '0')}m`;
+}
+
+// The eight points of the compass, for an azimuth an operator reads rather than
+// computes. "rises at 213°" is a number; "rises SW" is a direction to look in.
+const COMPASS = ['N', 'NE', 'E', 'SE', 'S', 'SW', 'W', 'NW'];
+const compass = (deg: number) => COMPASS[Math.round(((deg % 360) + 360) % 360 / 45) % 8];
+
+// How good a pass is, as a colour. A bird 70° overhead and one scraping 12°
+// along the horizon are not the same evening, and the table should say so
+// without the operator reading every number.
+function elClass(el: number): string {
+  if (el >= 50) return 'text-success';
+  if (el >= 25) return 'text-foreground';
+  if (el >= 15) return 'text-caution';
+  return 'text-muted-foreground';
+}
+
+// The mode a satellite is worked in, as a dot: FM and SSB call for a completely
+// different set-up, and which of the two the next pass is decides whether the
+// operator reaches for a handheld or the whole station.
+const MODE_COLOUR: Record<string, string> = {
+  FM: 'var(--info)',
+  SSB: 'var(--success)',
+  CW: 'var(--caution)',
+  DATA: 'var(--warning)',
+};
+
+function ModeDot({ mode }: { mode: string }) {
+  const colour = MODE_COLOUR[mode];
+  if (!colour) return null;
+  return (
+    <span
+      title={mode}
+      className="ml-1.5 inline-block size-1.5 rounded-full align-middle"
+      style={{ backgroundColor: colour }}
+    />
+  );
+}
+
+export function SatellitePanel({ myGrid }: { myGrid: string }) {
+  const { t } = useI18n();
+  const [birds, setBirds] = useState<Bird[]>([]);
+  const [sel, setSel] = useState<string>(() => localStorage.getItem('opslog.satSelected') || '');
+  const [tpIdx, setTpIdx] = useState(0);
+  const [positions, setPositions] = useState<Position[]>([]);
+  const [passes, setPasses] = useState<Pass[]>([]);
+  const [tuning, setTuning] = useState<Tuning | null>(null);
+  const [pass, setPass] = useState<PassInfo | null>(null);
+  const [tle, setTle] = useState<{ count: number; age_h: number; stale: boolean; custom: number } | null>(null);
+  const [tracking, setTracking] = useState<Track | null>(null);
+  const [sky, setSky] = useState<SkyPoint[]>([]);
+  const [skyShown, setSkyShown] = useState(() => localStorage.getItem(SKY_SHOWN_KEY) !== '0');
+  const [err, setErr] = useState('');
+  // A clock of its own, so every countdown on the panel ticks from one instant
+  // and none of them needs a round trip to Go to lose a second.
+  const [now, setNow] = useState(() => Date.now());
+  useEffect(() => {
+    const id = window.setInterval(() => setNow(Date.now()), 1000);
+    return () => window.clearInterval(id);
+  }, []);
+
+  // What the operator follows. Chosen in Settings; following nothing means
+  // every satellite we can both find and tune, which is what somebody who has
+  // not chosen yet should see.
+  const shown = useMemo(() => {
+    const favs = birds.filter((b) => b.favorite);
+    if (favs.length > 0) return favs;
+    return birds.filter((b) => b.has_elements && (b.transponders?.length ?? 0) > 0);
+  }, [birds]);
+  const bird = useMemo(() => birds.find((b) => b.name === sel) ?? null, [birds, sel]);
+  const tp = bird?.transponders?.[tpIdx] ?? null;
+  // The mode each satellite is worked in, for the pass table's dot. Its first
+  // transponder: on a bird that has two, the first is the one it is known for.
+  const modeOf = useMemo(() => {
+    const m = new Map(birds.map((b) => [b.name, b.transponders?.[0]?.mode ?? ''] as const));
+    return (name: string) => m.get(name) ?? '';
+  }, [birds]);
+
+  // ── Data ─────────────────────────────────────────────────────────────────
+
+  const loadBirds = useCallback(async () => {
+    try {
+      const list: Bird[] = (await GetSatelliteBirds()) as any;
+      setBirds(list ?? []);
+    } catch (e: any) { setErr(String(e?.message ?? e)); }
+  }, []);
+
+  const loadTle = useCallback(async () => {
+    try { setTle((await GetSatelliteTLEInfo()) as any); } catch { /* shown as unknown */ }
+  }, []);
+
+  const loadPasses = useCallback(async () => {
+    try {
+      setPasses(((await GetSatellitePasses([], 0)) as any) ?? []);
+      setErr('');
+    } catch (e: any) { setErr(String(e?.message ?? e)); }
+  }, []);
+
+  useEffect(() => { loadBirds(); loadTle(); loadPasses(); }, [loadBirds, loadTle, loadPasses]);
+  useEffect(() => EventsOn('sat:tle', () => { loadTle(); loadBirds(); loadPasses(); }), [loadTle, loadBirds, loadPasses]);
+  useEffect(() => { if (sel) localStorage.setItem('opslog.satSelected', sel); }, [sel]);
+  useEffect(() => { setTpIdx(0); }, [sel]);
+
+  // Keep the selection inside what is followed: an operator who narrows the list
+  // in Settings must not be left looking at a satellite that is no longer there.
+  useEffect(() => {
+    if (shown.length === 0) return;
+    if (!sel || !shown.some((b) => b.name === sel)) setSel(shown[0].name);
+  }, [shown, sel]);
+
+  // The map's satellites, every five seconds: a low orbit moves about a third of
+  // a degree of longitude in that time, which is a pixel or two at this zoom.
+  useEffect(() => {
+    let live = true;
+    const tick = async () => {
+      try {
+        const p: Position[] = ((await GetSatellitePositions([])) as any) ?? [];
+        if (live) setPositions(p);
+      } catch { /* a missing locator is already reported by the passes call */ }
+    };
+    tick();
+    const id = window.setInterval(tick, 5000);
+    return () => { live = false; window.clearInterval(id); };
+  }, []);
+
+  // The readout, every second: this is the number an operator types into a
+  // radio, and a Doppler correction on 70 cm moves by a few tens of hertz a
+  // second at the middle of a pass.
+  useEffect(() => {
+    if (!sel) { setTuning(null); return; }
+    let live = true;
+    const tick = async () => {
+      try {
+        const tn: Tuning = (await GetSatelliteTuning(sel, tpIdx, 0)) as any;
+        if (live) setTuning(tn);
+      } catch { if (live) setTuning(null); }
+    };
+    tick();
+    const id = window.setInterval(tick, 1000);
+    return () => { live = false; window.clearInterval(id); };
+  }, [sel, tpIdx]);
+
+  // The pass, every twenty seconds. Predicting one steps the orbit across hours;
+  // the countdown itself is two timestamps and a clock, which the browser runs.
+  useEffect(() => {
+    if (!sel) { setPass(null); return; }
+    let live = true;
+    const tick = async () => {
+      try {
+        const p: PassInfo = (await GetSatelliteNextPass(sel)) as any;
+        if (live) setPass(p);
+      } catch { if (live) setPass(null); }
+    };
+    tick();
+    const id = window.setInterval(tick, 20_000);
+    return () => { live = false; window.clearInterval(id); };
+  }, [sel]);
+
+  // The pass drawn across the sky. Once a minute is plenty: the SHAPE of a
+  // pass does not change while it happens — only the marker on it moves, and
+  // that comes from the tuning poll a second at a time.
+  useEffect(() => {
+    if (!sel || !skyShown) { setSky([]); return; }
+    let live = true;
+    const load = async () => {
+      try {
+        const pts: SkyPoint[] = ((await GetSatelliteSkyTrack(sel, 120)) as any) ?? [];
+        if (live) setSky(pts);
+      } catch { if (live) setSky([]); }
+    };
+    load();
+    const id = window.setInterval(load, 60_000);
+    return () => { live = false; window.clearInterval(id); };
+  }, [sel, skyShown]);
+  useEffect(() => { writeUiPref(SKY_SHOWN_KEY, skyShown ? '1' : '0'); }, [skyShown]);
+
+  // Passes are cheap but not free, and they change slowly.
+  useEffect(() => {
+    const id = window.setInterval(loadPasses, 5 * 60_000);
+    return () => window.clearInterval(id);
+  }, [loadPasses]);
+
+  // The tracker's own state, pushed as it moves. Polled as well, at a lazy
+  // rate, so a panel opened while tracking is already running is not blank
+  // until the next tick.
+  useEffect(() => {
+    const read = async () => {
+      try { setTracking((await GetSatelliteTracking()) as any); } catch { /* not tracking */ }
+    };
+    read();
+    const off = EventsOn('sat:track', (s: any) => setTracking(s ?? null));
+    const id = window.setInterval(read, 10_000);
+    return () => { off(); window.clearInterval(id); };
+  }, []);
+
+  const toggleTracking = async () => {
+    setErr('');
+    try {
+      if (tracking?.on) {
+        await StopSatelliteTracking();
+        setTracking(null);
+      } else {
+        await StartSatelliteTracking(sel, tpIdx);
+        setTracking((await GetSatelliteTracking()) as any);
+      }
+    } catch (e: any) { setErr(String(e?.message ?? e)); }
+  };
+
+  // ── Map ──────────────────────────────────────────────────────────────────
+
+  const divRef = useRef<HTMLDivElement>(null);
+  const mapRef = useRef<L.Map | null>(null);
+  const layerRef = useRef<L.LayerGroup | null>(null);
+  const baseRef = useRef<L.TileLayer | null>(null);
+  const labelsRef = useRef<L.TileLayer | null>(null);
+  const [basemap, setBasemap] = useState<BasemapKey>(() => loadMapBase(MAP_BASE_SAT, 'light'));
+  const saved = useRef(loadMapView(MAP_VIEW_SAT));
+  const [track, setTrack] = useState<Position[]>([]);
+
+  const home = useMemo(() => gridToLatLon(myGrid), [myGrid]);
+
+  // ── The readout column ───────────────────────────────────────────────────
+
+  const [sideW, setSideW] = useState<number>(() => {
+    const n = parseFloat(localStorage.getItem(SIDE_W_KEY) || '');
+    return Number.isFinite(n) && n >= SIDE_W_MIN && n <= SIDE_W_MAX ? n : SIDE_W_DEFAULT;
+  });
+  const [sideShown, setSideShown] = useState(() => localStorage.getItem(SIDE_SHOWN_KEY) !== '0');
+  useEffect(() => { writeUiPref(SIDE_W_KEY, String(Math.round(sideW))); }, [sideW]);
+  useEffect(() => { writeUiPref(SIDE_SHOWN_KEY, sideShown ? '1' : '0'); }, [sideShown]);
+
+  // Dragging the grip. Measured from where the pointer STARTED rather than from
+  // the container, and with the pointer captured — without the capture the map
+  // underneath swallows the moves the instant the cursor crosses it.
+  const startSideDrag = (e: React.PointerEvent) => {
+    e.preventDefault();
+    (e.currentTarget as HTMLElement).setPointerCapture(e.pointerId);
+    const x0 = e.clientX;
+    const w0 = sideW;
+    const onMove = (ev: PointerEvent) => {
+      setSideW(Math.min(SIDE_W_MAX, Math.max(SIDE_W_MIN, Math.round(w0 + (x0 - ev.clientX)))));
+    };
+    const onUp = () => {
+      window.removeEventListener('pointermove', onMove);
+      window.removeEventListener('pointerup', onUp);
+    };
+    window.addEventListener('pointermove', onMove);
+    window.addEventListener('pointerup', onUp);
+  };
+
+  useEffect(() => {
+    if (!divRef.current || mapRef.current) return;
+    const m = L.map(divRef.current, {
+      zoomControl: true, attributionControl: true,
+      worldCopyJump: false, preferCanvas: true,
+      // Opened on the station, not on the Atlantic: the passes that matter are
+      // the ones over the operator's own head.
+      center: saved.current ? [saved.current.lat, saved.current.lon] : [home?.lat ?? 25, home?.lon ?? 0],
+      zoom: saved.current ? saved.current.zoom : 3,
+      minZoom: 2,
+    });
+    m.on('moveend', () => {
+      const c = m.getCenter();
+      saveMapView(MAP_VIEW_SAT, c.lat, c.lng, m.getZoom());
+    });
+    mapRef.current = m;
+    layerRef.current = L.layerGroup().addTo(m);
+    const ro = new ResizeObserver(() => m.invalidateSize({ animate: false }));
+    ro.observe(divRef.current);
+    const settle = window.setTimeout(() => m.invalidateSize({ animate: false }), 100);
+    return () => {
+      window.clearTimeout(settle);
+      ro.disconnect();
+      m.remove();
+      mapRef.current = null;
+      layerRef.current = null;
+    };
+  }, [home?.lat, home?.lon]);
+
+  useEffect(() => {
+    const m = mapRef.current;
+    if (!m) return;
+    baseRef.current?.remove(); labelsRef.current?.remove();
+    const bm = BASEMAPS[basemap];
+    const opts: L.TileLayerOptions = {
+      maxNativeZoom: bm.maxNativeZoom, noWrap: true,
+      bounds: L.latLngBounds(L.latLng(-85.0511, -180), L.latLng(85.0511, 180)),
+    };
+    baseRef.current = L.tileLayer(bm.url, { ...opts, attribution: bm.attr, subdomains: bm.subdomains ?? 'abc' }).addTo(m);
+    if (bm.labelsUrl) labelsRef.current = L.tileLayer(bm.labelsUrl, opts).addTo(m);
+    saveMapBase(MAP_BASE_SAT, basemap);
+  }, [basemap]);
+
+  // The selected bird's path over the ground, redrawn when the selection
+  // changes and every couple of minutes as it walks off the front of it.
+  useEffect(() => {
+    if (!sel) { setTrack([]); return; }
+    let live = true;
+    const load = async () => {
+      try {
+        const pts: Position[] = ((await GetSatelliteGroundTrack(sel, 100)) as any) ?? [];
+        if (live) setTrack(pts);
+      } catch { if (live) setTrack([]); }
+    };
+    load();
+    const id = window.setInterval(load, 120_000);
+    return () => { live = false; window.clearInterval(id); };
+  }, [sel]);
+
+  useEffect(() => {
+    const layer = layerRef.current;
+    if (!layer) return;
+    layer.clearLayers();
+    if (home) {
+      L.circleMarker([home.lat, home.lon], {
+        radius: 5, color: '#fff', weight: 2, fillColor: '#e11d48', fillOpacity: 1,
+      }).bindTooltip(myGrid, { direction: 'top' }).addTo(layer);
+    }
+    if (track.length > 1) {
+      const pts = splitAtAntimeridian(track.map((p) => [p.lat, p.lon] as [number, number]));
+      L.polyline(pts as L.LatLngExpression[][], {
+        color: 'var(--info)', weight: 1.2, opacity: 0.7, dashArray: '4 4', smoothFactor: 0,
+      }).addTo(layer);
+    }
+    const wanted = new Set(shown.map((b) => b.name));
+    for (const p of positions) {
+      if (!wanted.has(p.name) && p.name !== sel) continue;
+      const chosen = p.name === sel;
+      const up = p.el > 0;
+      const colour = chosen ? '#22c55e' : up ? '#f59e0b' : '#9ca3af';
+      // The footprint is the honest answer to "can I hear it": everything inside
+      // the circle has the satellite above its horizon.
+      L.circle([p.lat, p.lon], {
+        radius: p.footprint_km * 1000,
+        color: colour, weight: chosen ? 1.2 : 0.8, opacity: chosen ? 0.7 : 0.35,
+        fillColor: colour, fillOpacity: chosen ? 0.1 : 0.05,
+      }).addTo(layer);
+      L.circleMarker([p.lat, p.lon], {
+        radius: chosen ? 6 : 4, color: '#fff', weight: 1,
+        fillColor: colour, fillOpacity: 1,
+      })
+        .bindTooltip(`${p.name} · ${fmtDeg(p.el)} · ${Math.round(p.alt_km)} km`, { direction: 'top' })
+        .on('click', () => setSel(p.name))
+        .addTo(layer);
+    }
+  }, [positions, track, home?.lat, home?.lon, myGrid, sel, shown]);
+
+  // ── Render ───────────────────────────────────────────────────────────────
+
+  // The pass, as a countdown and a bar. Both derived here from two timestamps,
+  // so they move every second without asking Go anything.
+  const aosMs = pass?.has_pass ? Date.parse(pass.aos) : 0;
+  const losMs = pass?.has_pass ? Date.parse(pass.los) : 0;
+  const inPass = !!pass?.has_pass && now >= aosMs && now < losMs;
+  const progress = inPass && losMs > aosMs ? (now - aosMs) / (losMs - aosMs) : 0;
+
+  return (
+    <div className="flex flex-col h-full min-h-0 gap-1 p-1">
+      {/* Header: what to work, and the one button that touches the radio.
+          Everything else about satellites — which ones, where the elements come
+          from, the rotator — is in Settings, because none of it is something to
+          do while a bird is going over. */}
+      <div className="flex items-center gap-2 flex-wrap px-1 shrink-0">
+        <SatIcon className="size-4 text-muted-foreground" />
+        <select
+          className="h-7 rounded-md border border-border bg-background px-2 text-xs min-w-[12rem]"
+          value={sel}
+          onChange={(e) => setSel(e.target.value)}
+        >
+          {shown.length === 0 && <option value="">{t('sat.noneFollowed')}</option>}
+          {shown.map((b) => (
+            <option key={b.name} value={b.name} disabled={!b.has_elements && !b.geostationary}>
+              {b.name}{b.has_elements || b.geostationary ? '' : ` — ${t('sat.noElements')}`}
+            </option>
+          ))}
+        </select>
+        {(bird?.transponders?.length ?? 0) > 1 && (
+          <select
+            className="h-7 rounded-md border border-border bg-background px-2 text-xs"
+            value={tpIdx}
+            onChange={(e) => setTpIdx(Number(e.target.value))}
+          >
+            {bird!.transponders!.map((x, i) => (
+              <option key={i} value={i}>{x.label}</option>
+            ))}
+          </select>
+        )}
+        <Button
+          size="sm"
+          variant={tracking?.on ? 'default' : 'outline'}
+          className={cn('h-7 px-2 gap-1.5', tracking?.on && 'bg-success text-background hover:bg-success/90')}
+          onClick={toggleTracking}
+          disabled={!bird?.transponders?.length}
+          title={tracking?.on
+            ? (tracking.radio === 'sat' ? t('sat.trackingFull') : t('sat.trackingDown'))
+            : t('sat.trackTip')}
+        >
+          <Radio className="size-3.5" />
+          {tracking?.on ? t('sat.tracking') : t('sat.track')}
+        </Button>
+        {tracking?.on && tracking.radio === 'downlink-only' && (
+          <span className="text-[11px] text-warning">{t('sat.downlinkOnly')}</span>
+        )}
+        <div className="flex-1" />
+        {/* Elements are maintenance, so only their AGE is here — and only when
+            it has become a reason the panel might be wrong. */}
+        {tle?.stale && <span className="text-[11px] text-warning">{t('sat.tleStale')}</span>}
+        <select
+          className="h-7 rounded-md border border-border bg-background px-2 text-xs"
+          value={basemap}
+          onChange={(e) => setBasemap(e.target.value as BasemapKey)}
+        >
+          {Object.entries(BASEMAPS).map(([k, v]) => <option key={k} value={k}>{v.label}</option>)}
+        </select>
+        <Button
+          variant="ghost" size="sm"
+          className={cn('h-7 px-1.5', skyShown && 'text-success')}
+          onClick={() => setSkyShown((v) => !v)}
+          title={skyShown ? t('sat.hideSky') : t('sat.showSky')}
+        >
+          <Radar className="size-3.5" />
+        </Button>
+        {/* Put the whole window on the map. On a laptop the readout takes a
+            third of the screen, and there are moments — watching a footprint
+            cross an ocean — when the map IS the answer. */}
+        <Button
+          variant="ghost" size="sm" className="h-7 px-1.5"
+          onClick={() => setSideShown((v) => !v)}
+          title={sideShown ? t('sat.hideSide') : t('sat.showSide')}
+        >
+          {sideShown ? <PanelRightClose className="size-3.5" /> : <PanelRightOpen className="size-3.5" />}
+        </Button>
+      </div>
+
+      {err && <div className="px-2 text-[11px] text-danger shrink-0">{err}</div>}
+
+      <div className="flex gap-1 flex-1 min-h-0">
+        {/* The map. isolate is load-bearing, not tidiness: Leaflet stacks its
+            own panes and controls up to z-index 1000, which without a stacking
+            context of their own float over Preferences and every dialog in the
+            app — the map ends up on top of the very buttons that would close
+            it. */}
+        <div className="relative isolate z-0 flex-1 min-w-0 rounded-lg overflow-hidden border border-border">
+          <div ref={divRef} className="h-full w-full" />
+        </div>
+
+        {sideShown && (
+          <div
+            role="separator"
+            aria-orientation="vertical"
+            title={t('sat.sideWidthTip')}
+            onPointerDown={startSideDrag}
+            onDoubleClick={() => setSideW(SIDE_W_DEFAULT)}
+            className="group relative shrink-0 w-2 cursor-col-resize flex items-center justify-center"
+          >
+            <span className="h-10 w-[3px] rounded-full bg-border group-hover:bg-primary transition-colors" />
+          </div>
+        )}
+
+        <div className={cn('shrink-0 flex flex-col gap-1 min-h-0', !sideShown && 'hidden')}
+          style={{ width: sideW }}>
+          {/* The pass. The first thing an operator looks at and the reason they
+              sit down: how long have I got, and how high does it get. */}
+          <div className={cn('rounded-lg border bg-card p-2',
+            inPass ? 'border-success/60' : 'border-border')}>
+            <div className="flex items-baseline justify-between gap-2">
+              <span className="font-medium text-sm truncate">{bird?.name ?? '—'}</span>
+              <span className="text-[11px] text-muted-foreground truncate">{tp?.label ?? ''}</span>
+            </div>
+
+            {bird?.geostationary ? (
+              <div className="mt-1 text-[11px] text-muted-foreground">{t('sat.geoHint')}</div>
+            ) : !pass?.has_pass ? (
+              <div className="mt-1 text-[11px] text-muted-foreground">{t('sat.noPassSoon')}</div>
+            ) : (
+              <>
+                <div className="mt-1 flex items-baseline gap-2">
+                  <span className={cn('text-[10px] uppercase tracking-wide',
+                    inPass ? 'text-success' : 'text-muted-foreground')}>
+                    {inPass ? t('sat.los') : t('sat.aos')}
+                  </span>
+                  <span className={cn('text-xl font-semibold tabular-nums leading-none',
+                    inPass && 'text-success')}>
+                    {fmtCountdown((inPass ? losMs : aosMs) - now)}
+                  </span>
+                  <span className="text-[11px] text-muted-foreground tabular-nums ml-auto">
+                    {hhmmss(inPass ? pass.los : pass.aos)}Z
+                  </span>
+                </div>
+
+                {/* Where in the pass we are. A bar because the useful question
+                    mid-pass is not the clock but "am I past the peak". */}
+                <div className="mt-1.5 h-1 rounded-full bg-muted overflow-hidden">
+                  <div className="h-full bg-success transition-[width] duration-1000 ease-linear"
+                    style={{ width: `${Math.round(progress * 100)}%` }} />
+                </div>
+
+                <div className="mt-1.5 grid grid-cols-3 gap-1 text-[11px] tabular-nums">
+                  <PassBit label={t('sat.rise')} value={`${hhmm(pass.aos)} ${compass(pass.aos_az)}`} />
+                  <PassBit label={t('sat.peak')} value={`${Math.round(pass.max_el)}° ${compass(pass.max_el_az)}`}
+                    strong={pass.max_el >= 30} />
+                  <PassBit label={t('sat.set')} value={`${hhmm(pass.los)} ${compass(pass.los_az)}`} />
+                </div>
+              </>
+            )}
+          </div>
+
+          {/* The sky, seen from underneath it: the centre is straight up, the
+              rim is the horizon, north is at the top. One glance says whether
+              the pass comes over the roof or along the treeline. */}
+          {skyShown && (
+            <div className="rounded-lg border border-border bg-card p-2">
+              <SkyPlot
+                track={sky}
+                az={tuning?.az ?? null}
+                el={tuning?.el ?? null}
+                name={bird?.name}
+                visible={!!tuning?.visible}
+              />
+            </div>
+          )}
+
+          {/* Where it is, right now. */}
+          <div className="rounded-lg border border-border bg-card p-2">
+            <div className="grid grid-cols-2 gap-2">
+              <Readout label={t('sat.az')} value={tuning ? fmtDeg(tuning.az) : '—'}
+                sub={tuning ? compass(tuning.az) : ''} />
+              <Readout label={t('sat.el')} value={tuning ? fmtDeg(tuning.el) : '—'}
+                colour={tuning?.visible ? 'var(--success)' : 'var(--muted-foreground)'}
+                sub={tuning ? (tuning.visible ? t('sat.up') : t('sat.below')) : ''} />
+            </div>
+
+            <div className="mt-2 grid grid-cols-3 gap-1 text-[11px] tabular-nums">
+              <PassBit label={t('sat.range')} value={tuning?.range_km ? fmtKm(tuning.range_km) : '—'} />
+              <PassBit label={t('sat.altitude')} value={tuning?.alt_km ? fmtKm(tuning.alt_km) : '—'} />
+              <PassBit label={t('sat.footprint')} value={tuning?.footprint_km ? fmtKm(tuning.footprint_km) : '—'} />
+            </div>
+
+            {/* Approaching or receding, which is the sign of the whole Doppler
+                correction and the one number that explains why the frequencies
+                are moving the way they are. */}
+            {!!tuning && !bird?.geostationary && (
+              <div className="mt-1.5 flex items-center gap-1.5 text-[11px] text-muted-foreground tabular-nums">
+                {tuning.range_rate < 0
+                  ? <ArrowUp className="size-3 text-success" />
+                  : <ArrowDown className="size-3 text-warning" />}
+                <span>{tuning.range_rate < 0 ? t('sat.approaching') : t('sat.receding')}</span>
+                <span>{Math.abs(tuning.range_rate).toFixed(2)} km/s</span>
+              </div>
+            )}
+
+            {/* Where the antenna is, beside where the satellite is. The two
+                differing is a rotator still slewing; the two differing for a
+                long time is a rotator that is stuck, and that is worth being
+                able to see without walking outside. */}
+            {tracking?.rot_on && (
+              <div className="mt-1.5 pt-1.5 border-t border-border/60 flex items-baseline gap-2 text-[11px] tabular-nums">
+                <span className="text-muted-foreground uppercase tracking-wide text-[10px]">{t('sat.antenna')}</span>
+                <span className="font-medium">{fmtDeg(tracking.rot_az)} / {fmtDeg(tracking.rot_el)}</span>
+                {!tracking.rot_live && <span className="text-muted-foreground">{t('sat.rotCommanded')}</span>}
+              </div>
+            )}
+          </div>
+
+          {/* What to tune. */}
+          <div className="rounded-lg border border-border bg-card p-2">
+            <div className="space-y-1">
+              <FreqRow label={t('sat.down')} hz={tuning?.down_hz ?? 0} nominal={tuning?.nominal_down ?? 0} />
+              <FreqRow label={t('sat.up')} hz={tuning?.up_hz ?? 0} nominal={tuning?.nominal_up ?? 0} />
+            </div>
+            <div className="mt-1.5 flex flex-wrap gap-x-3 gap-y-0.5 text-[11px] text-muted-foreground">
+              {!!tp?.mode && <span>{tp.mode}</span>}
+              {!!tp?.ctcss && <span>CTCSS {tp.ctcss.toFixed(1)}</span>}
+              {tp?.inverting && <span>{t('sat.inverting')}</span>}
+              {tp?.linear && <span>{Math.round((tp.down_hi - tp.down_lo) / 1000)} kHz</span>}
+              {bird?.geostationary && <span>{t('sat.geo')}</span>}
+            </div>
+          </div>
+
+          {/* What is coming. */}
+          <div className="rounded-lg border border-border bg-card flex-1 min-h-0 flex flex-col">
+            <div className="px-2 py-1 text-[11px] font-medium text-muted-foreground border-b border-border shrink-0">
+              {t('sat.nextPasses')}
+            </div>
+            <div className="flex-1 min-h-0 overflow-auto">
+              {passes.length === 0 && (
+                <div className="p-2 text-[11px] text-muted-foreground">{t('sat.noPasses')}</div>
+              )}
+              {passes.length > 0 && (
+                // A real table, so the name column takes the width the longest
+                // name needs — "ZHUHAI-1 OVS-1A" was cut to eight characters in
+                // a fixed one — and the rest keeps its columns lined up under
+                // headings that say what the numbers are.
+                <table className="w-full text-[11px] tabular-nums">
+                  <thead className="sticky top-0 z-10 bg-card">
+                    <tr className="text-[10px] uppercase tracking-wide text-muted-foreground">
+                      <th className="text-left font-medium px-2 py-1">{t('sat.thSat')}</th>
+                      <th className="text-left font-medium py-1">{t('sat.thAos')}</th>
+                      <th className="text-left font-medium py-1">{t('sat.thLos')}</th>
+                      <th className="text-right font-medium py-1">{t('sat.thMaxEl')}</th>
+                      <th className="text-right font-medium px-2 py-1">{t('sat.thIn')}</th>
+                    </tr>
+                  </thead>
+                  <tbody>
+                    {passes.map((p, i) => {
+                      const aos = Date.parse(p.aos);
+                      const running = aos <= now && Date.parse(p.los) > now;
+                      const soon = !running && aos - now < 5 * 60_000;
+                      return (
+                        <tr
+                          key={`${p.name}-${p.aos}-${i}`}
+                          onClick={() => setSel(p.name)}
+                          className={cn(
+                            'cursor-pointer hover:bg-accent/50 border-t border-border/40',
+                            p.name === sel && 'bg-accent/40',
+                            running && 'bg-success/10',
+                          )}
+                        >
+                          <td className="px-2 py-1 whitespace-nowrap">
+                            <span className={cn('font-medium', running && 'text-success')}>{p.name}</span>
+                            <ModeDot mode={modeOf(p.name)} />
+                          </td>
+                          <td className="py-1 whitespace-nowrap">{hhmm(p.aos)}</td>
+                          <td className="py-1 whitespace-nowrap text-muted-foreground">{hhmm(p.los)}</td>
+                          {/* The elevation is the quality of the pass, so it is
+                              coloured like one: a 70° pass overhead and a 12°
+                              scrape along the horizon are not the same evening. */}
+                          <td className={cn('py-1 text-right font-medium', elClass(p.max_el))}>
+                            {Math.round(p.max_el)}°
+                          </td>
+                          <td className={cn('px-2 py-1 text-right whitespace-nowrap',
+                            running ? 'text-success font-medium' : soon ? 'text-warning' : 'text-muted-foreground')}>
+                            {running ? t('sat.now') : fmtCountdown(aos - now)}
+                          </td>
+                        </tr>
+                      );
+                    })}
+                  </tbody>
+                </table>
+              )}
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+}
+
+function Readout({ label, value, colour, sub }: { label: string; value: string; colour?: string; sub?: string }) {
+  return (
+    <div className="rounded-md bg-muted/40 px-2 py-1">
+      <div className="text-[10px] uppercase tracking-wide text-muted-foreground">{label}</div>
+      <div className="flex items-baseline gap-1.5">
+        <span className="text-lg font-semibold tabular-nums leading-tight" style={colour ? { color: colour } : undefined}>
+          {value}
+        </span>
+        {!!sub && <span className="text-[10px] text-muted-foreground">{sub}</span>}
+      </div>
+    </div>
+  );
+}
+
+function PassBit({ label, value, strong }: { label: string; value: string; strong?: boolean }) {
+  return (
+    <div className="min-w-0">
+      <div className="text-[10px] uppercase tracking-wide text-muted-foreground truncate">{label}</div>
+      <div className={cn('truncate', strong && 'font-semibold text-foreground')}>{value}</div>
+    </div>
+  );
+}
+
+// The corrected frequency large, the nominal one small beside it. Showing only
+// one of them leaves an operator unable to tell a Doppler correction from a
+// mistuned transponder.
+function FreqRow({ label, hz, nominal }: { label: string; hz: number; nominal: number }) {
+  const shift = hz && nominal ? hz - nominal : 0;
+  return (
+    <div className="flex items-baseline gap-2">
+      <span className="w-10 text-[10px] uppercase tracking-wide text-muted-foreground">{label}</span>
+      <span className="text-base font-semibold tabular-nums">{fmtHz(hz)}</span>
+      {!!shift && (
+        <span className="text-[10px] tabular-nums text-muted-foreground">
+          {shift > 0 ? '+' : '−'}{Math.abs(Math.round(shift))} Hz
+        </span>
+      )}
+    </div>
+  );
+}

frontend/src/components/SkyPlot.tsx

@@ -0,0 +1,142 @@
+import { useI18n } from '@/lib/i18n';
+
+// The sky, seen from underneath it.
+//
+// The map answers "where is the satellite over the earth". This answers "where
+// do I look", which during a pass is the question that matters: whether the
+// bird comes over the top or clips the horizon behind the house is something no
+// amount of azimuth and elevation digits conveys, and one glance at a polar
+// plot settles it.
+//
+// The projection is the one every satellite tracker uses and every operator
+// already reads: the centre is the zenith, the outer circle is the horizon, and
+// north is up. So the radius is (90 − elevation), NOT the elevation — a
+// satellite overhead is a dot in the middle, and a pass that stays near the rim
+// is one that never rises.
+
+export type SkyPoint = { at: string; az: number; el: number };
+
+export function SkyPlot({ track, az, el, name, visible, size = 300 }: {
+  // The pass, sampled from rise to set. Empty draws the dial alone, which is
+  // still worth showing: it says where the antenna is pointing now.
+  track: SkyPoint[];
+  // Where the satellite is at this instant, or null when it is not up.
+  az?: number | null;
+  el?: number | null;
+  name?: string;
+  visible?: boolean;
+  size?: number;
+}) {
+  const { t } = useI18n();
+  const R = size / 2 - 14;      // the horizon circle
+  const cx = size / 2, cy = size / 2;
+
+  // Where a bearing and an elevation land on the dial.
+  const pt = (azDeg: number, elDeg: number): [number, number] => {
+    const r = R * (90 - Math.max(0, Math.min(90, elDeg))) / 90;
+    const a = (azDeg * Math.PI) / 180;
+    return [cx + r * Math.sin(a), cy - r * Math.cos(a)];
+  };
+
+  const rings = [15, 30, 45, 60, 75];
+  const path = track.length > 1
+    ? track.map((p, i) => `${i === 0 ? 'M' : 'L'}${pt(p.az, p.el).map((v) => v.toFixed(1)).join(' ')}`).join(' ')
+    : '';
+
+  // Ticks every 10°, longer every 30°, so the rim reads as a compass rather
+  // than a plain circle.
+  const ticks = [];
+  for (let a = 0; a < 360; a += 10) {
+    const long = a % 30 === 0;
+    const rad = (a * Math.PI) / 180;
+    const r1 = R, r2 = R - (long ? 7 : 4);
+    ticks.push(
+      <line key={a}
+        x1={cx + r1 * Math.sin(rad)} y1={cy - r1 * Math.cos(rad)}
+        x2={cx + r2 * Math.sin(rad)} y2={cy - r2 * Math.cos(rad)}
+        stroke="var(--border)" strokeWidth={long ? 1.4 : 0.8} />,
+    );
+  }
+
+  const here = az != null && el != null ? pt(az, el) : null;
+  const start = track.length > 1 ? pt(track[0].az, track[0].el) : null;
+  const end = track.length > 1 ? pt(track[track.length - 1].az, track[track.length - 1].el) : null;
+
+  return (
+    <svg viewBox={`0 0 ${size} ${size}`} className="w-full h-auto select-none" role="img"
+      aria-label={t('sat.skyPlot')}>
+      <defs>
+        {/* An arrowhead on the track: a pass has a direction, and which way the
+            satellite is travelling decides where to point the antenna next. */}
+        <marker id="skyArrow" viewBox="0 0 10 10" refX="6" refY="5"
+          markerWidth="5" markerHeight="5" orient="auto-start-reverse">
+          <path d="M 0 0 L 10 5 L 0 10 z" fill="var(--success)" />
+        </marker>
+      </defs>
+
+      <circle cx={cx} cy={cy} r={R} fill="var(--muted)" fillOpacity={0.25}
+        stroke="var(--border)" strokeWidth={1.5} />
+      {rings.map((e) => (
+        <circle key={e} cx={cx} cy={cy} r={R * (90 - e) / 90}
+          fill="none" stroke="var(--border)" strokeWidth={0.6} strokeDasharray="3 4" />
+      ))}
+      {ticks}
+
+      {/* The cardinal cross. */}
+      <line x1={cx} y1={cy - R} x2={cx} y2={cy + R} stroke="var(--border)" strokeWidth={0.6} />
+      <line x1={cx - R} y1={cy} x2={cx + R} y2={cy} stroke="var(--border)" strokeWidth={0.6} />
+
+      {([
+        { lbl: 'N', x: cx, y: cy - R - 3, anchor: 'middle' },
+        { lbl: 'S', x: cx, y: cy + R + 11, anchor: 'middle' },
+        { lbl: 'E', x: cx + R + 4, y: cy + 4, anchor: 'start' },
+        { lbl: 'W', x: cx - R - 4, y: cy + 4, anchor: 'end' },
+      ] as const).map((c) => (
+        <text key={c.lbl} x={c.x} y={c.y} textAnchor={c.anchor}
+          fontSize={11} fontWeight={600} fill="var(--muted-foreground)">{c.lbl}</text>
+      ))}
+
+      {/* Elevation labels along the west arm, the way a tracker draws them. */}
+      {[0, 30, 60].map((e) => (
+        <text key={e} x={cx - R * (90 - e) / 90 + 2} y={cy + 10} fontSize={8}
+          fill="var(--muted-foreground)" opacity={0.8}>{e}°</text>
+      ))}
+
+      {/* The pass. */}
+      {path && (
+        <path d={path} fill="none" stroke="var(--success)" strokeWidth={1.6}
+          strokeDasharray="5 3" markerMid="url(#skyArrow)" markerEnd="url(#skyArrow)"
+          opacity={0.85} />
+      )}
+      {start && <circle cx={start[0]} cy={start[1]} r={3} fill="none" stroke="var(--success)" strokeWidth={1.4} />}
+      {end && <circle cx={end[0]} cy={end[1]} r={3} fill="var(--success)" opacity={0.6} />}
+
+      {/* Where it is now. Hollow and grey below the horizon: the numbers are
+          still right, but nothing can be worked through the earth. */}
+      {here && (
+        <g>
+          <line x1={here[0] - 6} y1={here[1]} x2={here[0] + 6} y2={here[1]}
+            stroke={visible ? 'var(--success)' : 'var(--muted-foreground)'} strokeWidth={1.4} />
+          <line x1={here[0]} y1={here[1] - 6} x2={here[0]} y2={here[1] + 6}
+            stroke={visible ? 'var(--success)' : 'var(--muted-foreground)'} strokeWidth={1.4} />
+          <circle cx={here[0]} cy={here[1]} r={4}
+            fill={visible ? 'var(--success)' : 'none'}
+            stroke={visible ? 'var(--background)' : 'var(--muted-foreground)'} strokeWidth={1.2} />
+        </g>
+      )}
+
+      {/* The name and the look angles, in the middle, where a tracker puts them
+          — big enough to read from the other side of the shack. */}
+      {!!name && (
+        <text x={cx} y={cy - R * 0.42} textAnchor="middle" fontSize={18} fontWeight={600}
+          fill="var(--foreground)" opacity={0.85}>{name}</text>
+      )}
+      {az != null && el != null && (
+        <text x={cx} y={cy - R * 0.22} textAnchor="middle" fontSize={12}
+          fill="var(--muted-foreground)" className="tabular-nums">
+          AZ {az.toFixed(1)}°  EL {el.toFixed(1)}°
+        </text>
+      )}
+    </svg>
+  );
+}

frontend/src/components/StationControlPanel.tsx

@@ -11,6 +11,8 @@ import { useI18n } from '@/lib/i18n';
 import { writeUiPref } from '@/lib/uiPref';
 import { subscribeRotorHeading, pokeRotorHeading } from '@/lib/rotorHeading';
 import { RotorCompass } from '@/components/RotorCompass';
+import { RotorCompassClassic } from '@/components/RotorCompassClassic';
+import { rotorStyle, subscribeRotorStyle } from '@/lib/rotorStyle';
 import { AmpCard } from '@/components/AmpCard';
 import { TunerCard } from '@/components/TunerCard';
 import type { TGStatus } from '@/components/TunerGeniusPanel';
@@ -128,6 +130,11 @@ function RotatorWidget({ hd, refetch, centerLat, centerLon, bearing, t }: Rotato
 }) {
   const [goto, setGoto] = useState('');
   const [err, setErr] = useState('');
+  // Both compasses in the app follow the same preference (Settings → Rotator):
+  // one operator's choice of dial, not one per panel.
+  const [dial, setDial] = useState(() => rotorStyle());
+  useEffect(() => subscribeRotorStyle(() => setDial(rotorStyle())), []);
+  const Dial = dial === 'classic' ? RotorCompassClassic : RotorCompass;
 
   const turn = (az: number) => {
     const a = ((Math.round(az) % 360) + 360) % 360;
@@ -145,9 +152,12 @@ function RotatorWidget({ hd, refetch, centerLat, centerLon, bearing, t }: Rotato
           title={hd.ok ? t('station.online') : t('station.rotatorNoRead')} />
       </div>
       <div className="p-3 flex gap-4 items-start">
-        {/* The SP/LP readout lives INSIDE RotorCompass, so every compass in the
-            app carries it rather than each caller drawing its own. */}
-        <RotorCompass
+        {/* The compact compass is the dial alone — short and long path are the
+            two coloured dots on it. The figures are in the status bar. */}
+        {/* The dial-only form is square and fills the box it is given, so its
+            size is set here rather than baked into the component. */}
+        <div className={dial === 'classic' ? 'shrink-0' : 'w-[210px] shrink-0'}>
+        <Dial
           bearing={bearing ?? null}
           headings={hd.ok ? [hd.azimuth] : []}
           centerLat={centerLat ?? null}
@@ -158,6 +168,7 @@ function RotatorWidget({ hd, refetch, centerLat, centerLon, bearing, t }: Rotato
           onSelectRotor={(i) => { SetActiveRotor(i).then(refetch).catch((e) => setErr(String(e?.message ?? e))); }}
           onGoto={(az) => turn(az)}
         />
+        </div>
         <div className="flex-1 min-w-0 space-y-2">
           <div className="font-mono">
             <span className="text-2xl font-bold tabular-nums">{hd.ok ? `${hd.azimuth}°` : '—'}</span>

frontend/src/components/UDPIntegrationsPanel.tsx

@@ -2,7 +2,8 @@ import React, { useCallback, useEffect, useState } from 'react';
 import { Plus, Trash2, Edit2, RefreshCcw, ArrowDownToLine, ArrowUpFromLine } from 'lucide-react';
 import {
   ListUDPIntegrations, SaveUDPIntegration, DeleteUDPIntegration, ReloadUDPIntegrations,
-  GetWsjtHighlight, SetWsjtHighlight, GetWsjtFollowMode, SetWsjtFollowMode,
+  GetWsjtHighlight, SetWsjtHighlight, GetWsjtHighlightWorked, SetWsjtHighlightWorked, GetWsjtFollowMode, SetWsjtFollowMode,
+  GetWsjtHighlightColours, SetWsjtHighlightColours,
 } from '../../wailsjs/go/main/App';
 import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';
@@ -160,9 +161,16 @@ type Props = { onError: (msg: string) => void };
 
 export function UDPIntegrationsPanel({ onError }: Props) {
   const [highlightOn, setHighlightOn] = useState(false);
+  const [hlWorked, setHlWorked] = useState(false);
+  // The palette, as chosen. Background per verdict; the text colour is the
+  // backend’s business (see colourFor).
+  const [colours, setColours] = useState({ watchlist: '#F472B6', new_dxcc: '#16823C', new_band: '#E27A18', worked: '#4B5563' });
   const [followMode, setFollowMode] = useState(true);
   useEffect(() => {
     GetWsjtHighlight().then((v) => setHighlightOn(!!v)).catch(() => {});
+    GetWsjtHighlightColours().then((c: any) => { if (c) setColours(c); }).catch(() => {});
+    GetWsjtHighlightWorked().then((v) => setHlWorked(!!v)).catch(() => {});
+    GetWsjtHighlightWorked().then((v) => setHlWorked(!!v)).catch(() => {});
     GetWsjtFollowMode().then((v) => setFollowMode(!!v)).catch(() => {});
   }, []);
   const { t } = useI18n();
@@ -246,6 +254,54 @@ export function UDPIntegrationsPanel({ onError }: Props) {
           <span className="block text-[11px] text-muted-foreground">{t('udpp.highlightHint')}</span>
         </span>
       </label>
+      {/* The palette, nested under the switch for the same reason as the box
+          below it. One colour per verdict, and the background only: the text
+          colour is worked out from it, so a chosen colour cannot come back
+          unreadable in the decoder's window. */}
+      {highlightOn && (
+        <div className="pl-6 max-w-2xl space-y-1.5">
+          <div className="text-[11px] text-muted-foreground">{t('udpp.hlColours')}</div>
+          <div className="flex flex-wrap gap-3">
+            {([
+              ['watchlist', t('udpp.hlWatchlist')],
+              ['new_dxcc', t('udpp.hlNewDxcc')],
+              ['new_band', t('udpp.hlNewBand')],
+              ['worked', t('udpp.hlWorkedC')],
+            ] as const).map(([k, label]) => (
+              <label key={k} className="inline-flex items-center gap-1.5 text-xs">
+                <input
+                  type="color"
+                  value={(colours as any)[k] || '#000000'}
+                  onChange={(e) => {
+                    const next = { ...colours, [k]: e.target.value.toUpperCase() };
+                    setColours(next);
+                    void SetWsjtHighlightColours(next as any);
+                  }}
+                  className="h-6 w-8 rounded border border-border bg-background p-0.5 cursor-pointer"
+                />
+                {label}
+              </label>
+            ))}
+            <button type="button" className="text-xs text-muted-foreground underline hover:text-foreground"
+              onClick={() => {
+                const def = { watchlist: '#F472B6', new_dxcc: '#16823C', new_band: '#E27A18', worked: '#4B5563' };
+                setColours(def as any);
+                void SetWsjtHighlightColours(def as any);
+              }}>
+              {t('udpp.hlReset')}
+            </button>
+          </div>
+        </div>
+      )}
+      {/* Nested under the switch above: the same feature, and meaningless
+          while that one is off. */}
+      {highlightOn && (
+        <label className="flex items-start gap-2 text-sm cursor-pointer max-w-2xl pl-6">
+          <Checkbox checked={hlWorked}
+            onCheckedChange={(c) => { setHlWorked(!!c); void SetWsjtHighlightWorked(!!c); }} />
+          <span>{t('udpp.hlWorked')}</span>
+        </label>
+      )}
       <label className="flex items-start gap-2 text-sm cursor-pointer max-w-2xl">
         <Checkbox checked={followMode}
           onCheckedChange={(c) => { setFollowMode(!!c); void SetWsjtFollowMode(!!c); }} />

frontend/src/components/WatchlistTab.tsx

@@ -11,7 +11,7 @@
 // The design is DXHunter's — the layout, the badges, the wording — repainted in
 // the app's theme tokens rather than its hard-coded slate/pink.
 import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
-import { Eye, Plus, Trash2, Bell, BellOff, Trophy, Search } from 'lucide-react';
+import { Eye, Plus, Trash2, Bell, BellOff, Trophy, Search, Check, AlertTriangle } from 'lucide-react';
 import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';
 import { Checkbox } from '@/components/ui/checkbox';
@@ -25,13 +25,7 @@ import {
 import { EventsOn } from '../../wailsjs/runtime/runtime';
 import type { ClusterSpot, SpotStatusEntry } from '@/components/ClusterGrid';
 import { inferSpotMode, spotStatusKey } from '@/lib/spot';
-
-interface WLEntry {
-  callsign: string; lastSeenStr: string; addedAt: string; spotCount: number;
-  isContest: boolean; notify: boolean;
-  isExpedition: boolean; clubLogQSOs24h: number; clubLogTotalQSOs: number;
-  clubLogHasOQRS: boolean; clubLogLiveStream: boolean;
-}
+import { useWatchlistSpots, matchesEntry, newBadge, type WLEntry } from '@/lib/watchlistSpots';
 
 interface Props {
   spots: ClusterSpot[];
@@ -40,21 +34,6 @@ interface Props {
   onSpotClick?: (s: ClusterSpot) => void;
 }
 
-// A spot is ON AIR for the badge while its last sighting is this fresh.
-const ON_AIR_MS = 10 * 60 * 1000;
-
-// Exact unless the entry carries a trailing * — the same rule the backend's
-// Match applies to the live stream, mirrored so the tab and the alerts can
-// never disagree about what an entry covers.
-function matchesEntry(call: string, pattern: string): boolean {
-  const c = call.toUpperCase();
-  if (pattern.endsWith('*')) {
-    const p = pattern.slice(0, -1);
-    return p !== '' && c.startsWith(p);
-  }
-  return c === pattern;
-}
-
 export function WatchlistTab({ spots, spotStatus, onSpotSelect, onSpotClick }: Props) {
   const { t } = useI18n();
   const [entries, setEntries] = useState<WLEntry[]>([]);
@@ -95,8 +74,6 @@ export function WatchlistTab({ spots, spotStatus, onSpotSelect, onSpotClick }: P
     noticeTimer.current = window.setTimeout(() => { setError(''); setNotice(''); }, 4000) as unknown as number;
   };
 
-  // worked answer per "call|band|modeclass|contest" key.
-  const [worked, setWorked] = useState<Record<string, boolean>>({});
 
   const refresh = useCallback(async () => {
     try { setEntries(((await WatchlistEntries()) ?? []) as any as WLEntry[]); }
@@ -117,63 +94,11 @@ export function WatchlistTab({ spots, spotStatus, onSpotSelect, onSpotClick }: P
 
   // Live spots per entry — prefix-matched, newest first, deduped per band+mode
   // (one line per slot; the freshest spot represents it).
-  const spotsFor = useMemo(() => {
-    const map = new Map<string, ClusterSpot[]>();
-    for (const e of entries) map.set(e.callsign, []);
-    for (const s of spots) {
-      for (const e of entries) {
-        if (matchesEntry(s.dx_call ?? '', e.callsign)) { map.get(e.callsign)!.push(s); break; }
-      }
-    }
-    for (const [k, list] of map) {
-      const seen = new Set<string>();
-      map.set(k, list.filter((s) => {
-        const key = `${(s.band ?? '')}|${inferSpotMode(s.comment ?? '', s.freq_hz)}|${s.dx_call}`;
-        if (seen.has(key)) return false;
-        seen.add(key);
-        return true;
-      }));
-    }
-    return map;
-  }, [spots, entries]);
-
-  // The worked answers, refreshed when the visible slots change. Debounced: a
-  // spot burst must cost one round trip, not one per spot.
-  const queryTimer = useRef<number | undefined>(undefined);
-  useEffect(() => {
-    if (queryTimer.current) window.clearTimeout(queryTimer.current);
-    queryTimer.current = window.setTimeout(async () => {
-      const queries: { call: string; band: string; mode: string; contest: boolean }[] = [];
-      const keys: string[] = [];
-      for (const e of entries) {
-        for (const s of spotsFor.get(e.callsign) ?? []) {
-          const mode = inferSpotMode(s.comment ?? '', s.freq_hz) || '';
-          queries.push({ call: s.dx_call, band: s.band ?? '', mode, contest: e.isContest });
-          keys.push(`${s.dx_call}|${s.band ?? ''}|${mode}|${e.isContest ? 1 : 0}`);
-        }
-      }
-      if (queries.length === 0) { setWorked({}); return; }
-      try {
-        const res: boolean[] = (await WatchlistWorkedSlots(queries as any)) ?? [];
-        // MERGED, not replaced: replacing made every already-answered key
-        // momentarily unknown on each refresh, which re-hid settled lines.
-        setWorked((prev) => {
-          const next = { ...prev };
-          keys.forEach((k, i) => { next[k] = !!res[i]; });
-          return next;
-        });
-      } catch { /* the badges just stay conservative */ }
-    }, 150) as unknown as number;
-    return () => { if (queryTimer.current) window.clearTimeout(queryTimer.current); };
-  }, [spotsFor, entries]);
-
-  const wkey = (e: WLEntry, s: ClusterSpot) =>
-    `${s.dx_call}|${s.band ?? ''}|${inferSpotMode(s.comment ?? '', s.freq_hz) || ''}|${e.isContest ? 1 : 0}`;
-  const workedFor = (e: WLEntry, s: ClusterSpot): boolean => worked[wkey(e, s)] ?? false;
-  // A spot whose verdict has not come back yet is NOT drawn. Showing it as
-  // Needed and withdrawing it half a second later made the list twitch on
-  // every burst — and nobody needs a spot 400 ms early, they need it settled.
-  const settled = (e: WLEntry, s: ClusterSpot): boolean => wkey(e, s) in worked;
+  // Which entries are on the air, and which of their slots are still needed.
+  // One definition, shared with the docked watch-list widget — the answer
+  // involves a debounced query per visible slot, and two copies of it would be
+  // two bursts of the same question and two ideas of what "needed" means.
+  const { spotsFor, workedFor, settled, onAir, worked } = useWatchlistSpots(entries, spots);
 
   const add = async () => {
     const c = addCall.trim().toUpperCase();
@@ -195,11 +120,7 @@ export function WatchlistTab({ spots, spotStatus, onSpotSelect, onSpotClick }: P
     catch (e: any) { flash(String(e?.message ?? e), true); }
   };
 
-  const isOnAir = (e: WLEntry): boolean =>
-    (spotsFor.get(e.callsign) ?? []).some((s) => {
-      const ts = Date.parse(String((s as any).received_at ?? ''));
-      return ts > 0 && Date.now() - ts < ON_AIR_MS;
-    });
+  const isOnAir = onAir;
 
   const shown = entries.filter((e) => {
     if (family === 'normal' && e.isContest) return false;
@@ -225,18 +146,20 @@ export function WatchlistTab({ spots, spotStatus, onSpotSelect, onSpotClick }: P
   // The cluster's own badge for a spot, read from the shared status index.
   const dxccBadge = (s: ClusterSpot): { label: string; color: string } | null => {
     const st = spotStatus[spotStatusKey(s.dx_call, s.band ?? '', s.comment ?? '', s.freq_hz)];
-    switch (st?.status) {
-      case 'new': return { label: t('wl.newDxcc'), color: 'var(--danger)' };
-      case 'new-band-mode': return { label: t('clg2.newBandMode'), color: 'var(--danger)' };
-      case 'new-band': return { label: t('clg2.newBand'), color: 'var(--warning)' };
-      case 'new-mode': return { label: t('clg2.newMode'), color: 'var(--caution)' };
-      case 'new-slot': return { label: t('clg2.newSlot'), color: '#5AC8FA' };
-      default: return null;
-    }
+    const b = newBadge(st?.status);
+    return b ? { label: t(b.key), color: b.colour } : null;
+  };
+
+  // Three decimals, and no trailing zeros beyond them: 7.056 rather than
+  // 7.0560, 14.0745 rather than 14.074500. DXHunter's own rule, and the one an
+  // operator reads a cluster line with.
+  const fmtMHz = (hz: number) => {
+    const [int, dec] = (hz / 1e6).toFixed(6).split('.');
+    return int + '.' + dec.slice(0, 3) + dec.slice(3).replace(/0+$/, '');
   };
 
   const chip = (color: string, text: string, extra?: string) => (
-    <span className={cn('px-1.5 py-0.5 rounded text-[10px] font-bold border', extra)}
+    <span className={cn('px-1.5 py-0.5 rounded text-[11px] font-semibold border', extra)}
       style={{ color, borderColor: `color-mix(in srgb, ${color} 40%, transparent)`, background: `color-mix(in srgb, ${color} 12%, transparent)` }}>
       {text}
     </span>
@@ -332,14 +255,18 @@ export function WatchlistTab({ spots, spotStatus, onSpotSelect, onSpotClick }: P
           const list = neededOnly ? all.filter((s) => !workedFor(e, s)) : all;
           return (
             <div key={e.callsign}
-              className={cn('rounded-lg border bg-card/70 p-3 transition-colors hover:bg-accent/20',
+              className={cn('rounded border bg-card/70 p-3 transition-colors hover:bg-accent/20',
                 needed > 0 ? 'border-warning/40' : 'border-border/70',
                 e.isContest && 'border-l-4 border-l-warning')}>
               <div className="flex items-center gap-2 flex-wrap">
-                <span className="text-lg font-bold font-mono" style={{ color: '#f472b6' }}>{e.callsign}</span>
+                {/* Proportional, not monospaced: DXHunter sets this one in the
+                    interface font and the difference is the first thing an
+                    operator notices with the two windows side by side. There is
+                    nothing to align here — it is a heading, not a column. */}
+                <span className="text-lg font-bold" style={{ color: '#f472b6' }}>{e.callsign}</span>
                 {isOnAir(e) && chip('var(--danger)', t('wl.onAir'), 'animate-pulse')}
                 {e.isContest && (
-                  <span className="inline-flex items-center gap-1 px-1.5 py-0.5 rounded text-[10px] font-bold bg-warning-muted text-warning-muted-foreground border border-warning-border"
+                  <span className="inline-flex items-center gap-1 px-1.5 py-0.5 rounded text-[11px] font-semibold bg-warning-muted text-warning-muted-foreground border border-warning-border"
                     title={t('wl.contestHint')}>
                     <Trophy className="size-3" /> {t('wl.contest')}
                   </span>
@@ -349,16 +276,16 @@ export function WatchlistTab({ spots, spotStatus, onSpotSelect, onSpotClick }: P
                 {e.clubLogHasOQRS && chip('var(--success)', 'OQRS')}
                 {e.clubLogLiveStream && (
                   <a href="#" onClick={(ev) => { ev.preventDefault(); void OpenExternalURL(`https://clublog.org/livestream/${e.callsign.replace('*', '')}`); }}
-                    className="px-1.5 py-0.5 rounded text-[10px] font-bold border text-info border-info/40 bg-info/10 hover:bg-info/20">Live</a>
+                    className="px-1.5 py-0.5 rounded text-[11px] font-semibold border text-info border-info/40 bg-info/10 hover:bg-info/20">Live</a>
                 )}
                 {list.length > 0 && (needed > 0
                   ? chip('var(--warning)', e.isContest ? t('wl.nToday', { n: needed }) : t('wl.nNeeded', { n: needed }))
                   : chip('var(--success)', e.isContest ? t('wl.workedToday') : t('wl.allWorked')))}
                 {e.lastSeenStr && e.lastSeenStr !== 'Never' && (
-                  <span className="text-[11px] text-muted-foreground">· {e.lastSeenStr}</span>
+                  <span className="text-[11px] text-muted-foreground">• {e.lastSeenStr}</span>
                 )}
                 {e.spotCount > 0 && (
-                  <span className="text-[11px] text-muted-foreground/70">· {t('wl.totalSpots', { n: e.spotCount })}</span>
+                  <span className="text-[11px] text-muted-foreground/70">• {t('wl.totalSpots', { n: e.spotCount })}</span>
                 )}
                 <div className="flex-1" />
                 <button type="button" title={t('wl.toggleContest')}
@@ -390,14 +317,20 @@ export function WatchlistTab({ spots, spotStatus, onSpotSelect, onSpotClick }: P
                         onDoubleClick={() => onSpotClick?.(s)}
                         title={t('wl.spotTip')}
                         className={cn('w-full flex items-center gap-2 px-2 py-1.5 rounded text-[11px] bg-muted/25 hover:bg-muted/70 transition-colors text-left',
-                          !done && 'border-l-[3px] border-warning')}>
-                        {done && <span className='font-bold shrink-0 text-success'>✓</span>}
+                          !done && 'border-l-2 border-warning')}>
+                        {/* Worked or wanted, said with a symbol at the head of
+                            the line as well as with the stripe down its side —
+                            the same two marks DXHunter uses, and the one an eye
+                            finds first when a card holds ten rows. */}
+                        {done
+                          ? <Check className="size-4 shrink-0 text-success" />
+                          : <AlertTriangle className="size-4 shrink-0 text-warning" />}
                         {/* Fixed columns: an elastic country made band/mode/freq start wherever the name ended — every row its own ruler. */}
-                        <span className="font-mono font-bold text-info shrink-0 w-24 truncate">{s.dx_call}</span>
+                        <span className="font-bold text-info shrink-0 w-24 truncate">{s.dx_call}</span>
                         <span className="text-muted-foreground truncate shrink-0 w-44">{(s as any).country ?? ''}</span>
                         <span className="px-1.5 rounded bg-muted shrink-0 w-11 text-center">{s.band}</span>
                         <span className="px-1.5 rounded shrink-0 w-11 text-center" style={mode ? { color: 'var(--chart-5)', background: 'color-mix(in srgb, var(--chart-5) 12%, transparent)' } : undefined}>{mode || ' '}</span>
-                        <span className="font-mono text-muted-foreground shrink-0 w-16 text-right">{(s.freq_hz / 1e6).toFixed(4)}</span>
+                        <span className="font-mono text-muted-foreground shrink-0 w-16 text-right">{fmtMHz(s.freq_hz)}</span>
                         {badge && chip(badge.color, badge.label)}
                         <div className="flex-1" />
                         {done

frontend/src/components/WatchlistWidget.tsx

@@ -0,0 +1,147 @@
+// WatchlistWidget — the watch list reduced to what is worth acting on RIGHT
+// NOW: entries that are on the air and still needed.
+//
+// The Watchlist tab is a tab, and an operator working FT8 lives on the decodes
+// one. A station they asked to be told about would appear on a screen they are
+// not looking at — so the same answer is docked in the widget strip, which sits
+// above the tabs and is therefore always in view. Only active AND needed: a
+// list of everything watched is the tab's job, and it would not fit here.
+import { useEffect, useMemo, useState } from 'react';
+import { Bell, X } from 'lucide-react';
+import { useI18n } from '@/lib/i18n';
+import { cn } from '@/lib/utils';
+import { inferSpotMode, spotStatusKey } from '@/lib/spot';
+import { useWatchlistSpots, newBadge, type WLEntry } from '@/lib/watchlistSpots';
+import type { ClusterSpot, SpotStatusEntry } from '@/components/ClusterGrid';
+import { WatchlistEntries } from '../../wailsjs/go/main/App';
+import { EventsOn } from '../../wailsjs/runtime/runtime';
+
+interface Props {
+  spots: ClusterSpot[];
+  // The cluster's own verdicts. WHAT a station is worth is the reason to leave
+  // what you are doing for it — "on the air and not worked" says nothing about
+  // whether it is a new entity or a fifth band on one worked in 1998.
+  spotStatus: Record<string, SpotStatusEntry>;
+  // A row is a spot: clicking it does what clicking one in the cluster does.
+  onPick?: (s: ClusterSpot) => void;
+  onClose?: () => void;
+}
+
+function age(s: ClusterSpot): string {
+  const ts = Date.parse(String((s as any).received_at ?? ''));
+  if (!(ts > 0)) return '';
+  const m = Math.floor((Date.now() - ts) / 60000);
+  if (m < 1) return 'now';
+  return `${m}m`;
+}
+
+export function WatchlistWidget({ spots, spotStatus, onPick, onClose }: Props) {
+  const { t } = useI18n();
+  const [entries, setEntries] = useState<WLEntry[]>([]);
+
+  const load = () => { WatchlistEntries().then((e: any) => setEntries((e ?? []) as WLEntry[])).catch(() => {}); };
+  useEffect(() => {
+    load();
+    // The list changes from four places (the tab, the cluster's star, the
+    // contest auto-add, an import), and a widget that only reads it at mount
+    // would quietly watch the wrong set for the rest of the session.
+    const off = EventsOn('watchlist:changed', load);
+    return () => { off?.(); };
+  }, []);
+
+  const { spotsFor, workedFor, settled } = useWatchlistSpots(entries, spots);
+
+  // Ticking, because every row carries an age and the freshest thing here is
+  // the reason to look at it at all.
+  const [, tick] = useState(0);
+  useEffect(() => {
+    const id = window.setInterval(() => tick((n) => n + 1), 30000);
+    return () => window.clearInterval(id);
+  }, []);
+
+  // One row per (entry, needed slot): the same station on two bands is two
+  // chances to work it, and collapsing them would hide the one that is open.
+  const rows = useMemo(() => {
+    const out: { e: WLEntry; s: ClusterSpot }[] = [];
+    for (const e of entries) {
+      for (const s of spotsFor.get(e.callsign) ?? []) {
+        if (!settled(e, s) || workedFor(e, s)) continue;
+        out.push({ e, s });
+      }
+    }
+    // Freshest first: a spot from twenty minutes ago is history, and this
+    // panel is short.
+    return out.sort((a, b) =>
+      Date.parse(String((b.s as any).received_at ?? '')) - Date.parse(String((a.s as any).received_at ?? '')));
+  }, [entries, spotsFor, workedFor, settled]);
+
+  return (
+    <section className="flex flex-col h-full min-h-0 rounded-lg border border-border bg-card overflow-hidden">
+      <div className="flex items-center gap-2 px-3 py-1.5 bg-muted/40 border-b border-border shrink-0">
+        <Bell className="size-4 text-primary shrink-0" />
+        <span className="text-xs font-semibold uppercase tracking-wider text-muted-foreground">
+          {t('wlw.title')}
+        </span>
+        <span className={cn('rounded px-1.5 py-px text-[10px] font-bold',
+          rows.length > 0 ? 'bg-warning text-warning-foreground' : 'bg-muted text-muted-foreground')}>
+          {rows.length}
+        </span>
+        <div className="flex-1" />
+        {onClose && (
+          <button type="button" onClick={onClose} title={t('wlw.hide')}
+            className="text-muted-foreground hover:text-foreground transition-colors">
+            <X className="size-3.5" />
+          </button>
+        )}
+      </div>
+
+      <div className="flex-1 min-h-0 overflow-y-auto">
+        {rows.length === 0 ? (
+          // Empty is the normal state, and it means something precise — say it,
+          // rather than leaving a blank box that reads as broken.
+          <div className="px-3 py-3 text-xs text-muted-foreground">
+            {entries.length === 0 ? t('wlw.emptyList') : t('wlw.emptyNone')}
+          </div>
+        ) : rows.map(({ e, s }, i) => {
+          const mode = inferSpotMode(s.comment ?? '', s.freq_hz) || '';
+          const badge = newBadge(spotStatus[spotStatusKey(s.dx_call, s.band ?? '', s.comment ?? '', s.freq_hz)]?.status);
+          return (
+            <button
+              key={`${e.callsign}-${s.dx_call}-${s.band}-${mode}-${i}`}
+              type="button"
+              onClick={() => onPick?.(s)}
+              title={e.callsign === s.dx_call
+                ? t('wlw.pick', { call: s.dx_call })
+                : `${t('wlw.pick', { call: s.dx_call })} — ${e.callsign}`}
+              className="w-full text-left px-2 py-1 border-b border-border/20 hover:bg-muted/50 transition-colors flex items-center gap-1.5"
+            >
+              {/* One line, in reading order: who, where, what it is worth, how
+                  long ago. The callsign is the only part allowed to give way —
+                  everything else is short and fixed, and a row that wraps is a
+                  row an operator has to parse instead of scan. */}
+              <span className="font-mono text-[13px] font-bold text-warning truncate">{s.dx_call}</span>
+              {s.band && (
+                <span className="rounded px-1 py-px text-[10px] font-bold uppercase bg-info-muted text-info-muted-foreground shrink-0">
+                  {s.band}
+                </span>
+              )}
+              {mode && <span className="font-mono text-[10px] text-muted-foreground shrink-0">{mode}</span>}
+              <div className="flex-1" />
+              {/* Why it is worth interrupting a QSO for — or not. */}
+              {badge && (
+                <span className="rounded px-1 py-px text-[10px] font-bold uppercase tracking-wide border shrink-0"
+                  style={{ color: badge.colour, borderColor: `color-mix(in srgb, ${badge.colour} 45%, transparent)`,
+                    background: `color-mix(in srgb, ${badge.colour} 12%, transparent)` }}>
+                  {t(badge.key)}
+                </span>
+              )}
+              <span className="font-mono text-[10px] text-muted-foreground/70 tabular-nums shrink-0 w-7 text-right">
+                {age(s)}
+              </span>
+            </button>
+          );
+        })}
+      </div>
+    </section>
+  );
+}

frontend/src/components/ui/combobox.tsx

@@ -9,7 +9,7 @@ import { cn } from '@/lib/utils';
 // can't hold a typo'd value that isn't in the list.
 export function Combobox({
   value, onChange, options, placeholder, className, allowFreeText = false, commitOnType = false,
-  showToggle = false,
+  showToggle = false, onWheelStep,
 }: {
   value: string;
   onChange: (v: string) => void;
@@ -21,6 +21,10 @@ export function Combobox({
   // fields read live by other actions — e.g. RST, so a CW macro sent without
   // leaving the field uses the value just typed.
   commitOnType?: boolean;
+  // Wheel over the field steps the value. The control cannot know what a step
+  // means — a decibel here, an S-unit there — so it reports the direction and
+  // the owner decides.
+  onWheelStep?: (dir: 1 | -1) => void;
   // Draw a chevron that opens the full list on click.
   //
   // Without it this control is indistinguishable from a plain text box: it opens
@@ -42,6 +46,21 @@ export function Combobox({
   // leave the list floating over the wrong row.
   const [menuPos, setMenuPos] = useState({ top: 0, left: 0, width: 0 });
 
+  // A NATIVE, non-passive listener: React attaches onWheel passively, where
+  // preventDefault does nothing at all and the panel scrolls away under the
+  // field being adjusted.
+  useEffect(() => {
+    const el = ref.current;
+    if (!el || !onWheelStep) return;
+    const onWheel = (e: WheelEvent) => {
+      if (e.deltaY === 0) return;
+      e.preventDefault();
+      onWheelStep(e.deltaY < 0 ? 1 : -1); // up is a better report
+    };
+    el.addEventListener('wheel', onWheel, { passive: false });
+    return () => el.removeEventListener('wheel', onWheel);
+  }, [onWheelStep]);
+
   useEffect(() => {
     function onDoc(e: MouseEvent) {
       if (ref.current && !ref.current.contains(e.target as Node)) setOpen(false);

frontend/src/lib/autocall.ts

@@ -1,221 +0,0 @@
-// Auto-call: let OpsLog answer a decode without the operator clicking it.
-//
-// WITHDRAWN FROM THE INTERFACE, because DXHunter already does it.
-//
-// Two programs from the same shack deciding on their own to answer the same
-// decode is worse than either doing it alone: they cannot see each other, so
-// they key over one another, and afterwards there is no telling which of them
-// called. The duplicate is the one to remove, and DXHunter is where this lives.
-//
-// There is no switch in Preferences and no button on the decodes toolbar, and
-// App.tsx returns before the loop can run. The file is kept whole: the rules
-// below are the delicate part, argued over and tested, and rewriting them from
-// memory later would be worse than leaving them here. Reinstating the feature
-// means restoring all three — the settings page, the button, and the guard.
-//
-// This KEYS THE TRANSMITTER on its own, which is why the rules here are written
-// as a series of refusals rather than a search for a reason to call. Everything
-// below has to be true; anything unknown means no.
-//
-// The decision is made here, in one pure function, precisely because it is the
-// dangerous part: it can be read, argued with and tested without a radio.
-
-export type AutoCallCriteria = {
-  dxcc: boolean;      // entity never worked
-  bandmode: boolean;  // entity worked, but neither this band nor this mode
-  band: boolean;      // entity never worked on this band
-  mode: boolean;      // entity never worked in this mode
-  slot: boolean;      // band and mode each worked, never together
-  grid: boolean;      // square wanted under the grid scope
-  county: boolean;    // US county never worked
-  pota: boolean;      // park never worked
-  // No SOTA here, though the shape invites it: a decode carries no summit
-  // reference and the backend publishes no "new summit" flag, so a criterion
-  // for it could never be true. It WAS declared, translated and impossible to
-  // tick — a field that lies about what the feature can do.
-  pfx: boolean;       // CQ WPX prefix never worked
-};
-
-export type AutoCallSettings = {
-  enabled: boolean;
-  criteria: AutoCallCriteria;
-  // Callsigns to answer on sight, wildcards allowed (4S7*, */P). Each is still
-  // subject to `watchCriteria` — "call TM0HQ, but only if it is a new band" is
-  // the request, not "call it every time it appears".
-  watch: string[];
-  // Empty means call a watched callsign whenever it is not already worked.
-  watchCriteria: AutoCallCriteria;
-  // Seconds to ignore a callsign after calling it, so a station that keeps
-  // sending CQ is not re-answered every slot while the QSO is in progress.
-  cooldownSec: number;
-};
-
-export const emptyCriteria: AutoCallCriteria = {
-  dxcc: false, bandmode: false, band: false, mode: false, slot: false,
-  grid: false, county: false, pota: false, pfx: false,
-};
-
-export const defaultAutoCall: AutoCallSettings = {
-  // OFF, and it stays off until asked for. Unattended transmit is not something
-  // to inherit from an upgrade.
-  enabled: false,
-  criteria: { ...emptyCriteria },
-  watch: [],
-  watchCriteria: { ...emptyCriteria },
-  cooldownSec: 120,
-};
-
-const AC_KEY = 'opslog.autoCall';
-
-export function loadAutoCall(): AutoCallSettings {
-  try {
-    const raw = localStorage.getItem(AC_KEY);
-    if (!raw) return { ...defaultAutoCall };
-    const v = JSON.parse(raw);
-    const out: AutoCallSettings = {
-      ...defaultAutoCall,
-      ...v,
-      criteria: { ...emptyCriteria, ...(v?.criteria ?? {}) },
-      watchCriteria: { ...emptyCriteria, ...(v?.watchCriteria ?? {}) },
-      watch: Array.isArray(v?.watch) ? v.watch : [],
-    };
-    // DISARMED ON SIGHT, and written back disabled.
-    //
-    // The runtime guard in App.tsx stops this build from calling anyone, but it
-    // leaves "enabled": true sitting in storage, where any build without the
-    // guard — an older one an operator reinstalls, a machine that upgrades
-    // later — reads it and keys the transmitter for a feature with no switch
-    // left to turn off. A withdrawn feature that keys a radio has to be
-    // disarmed where it is REMEMBERED, not only where it runs.
-    if (out.enabled) {
-      out.enabled = false;
-      try { localStorage.setItem(AC_KEY, JSON.stringify(out)); } catch { /* private mode: the guard still holds */ }
-    }
-    return out;
-  } catch { return { ...defaultAutoCall }; }
-}
-
-export const autoCallKey = AC_KEY;
-
-// A decode's resolved novelty, the same shape the panel already renders from.
-export type DecodeStatus = {
-  status?: string;
-  worked_call?: boolean;
-  new_grid?: boolean;
-  grid_state?: string;
-  new_county?: boolean;
-  new_pota?: boolean;
-  new_pfx?: boolean;
-};
-
-// matchesWildcard is the same rule the alert filters use: * is any run, ? is one.
-export function matchesWildcard(pattern: string, call: string): boolean {
-  const p = pattern.trim().toUpperCase();
-  const c = call.trim().toUpperCase();
-  if (!p) return false;
-  const re = new RegExp('^' + p.split('').map((ch) => (
-    ch === '*' ? '.*' : ch === '?' ? '.' : ch.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')
-  )).join('') + '$');
-  return re.test(c);
-}
-
-// anyCriterion is false for an all-off set, which is what makes "watch this
-// callsign, no conditions" expressible.
-function anyCriterion(c: AutoCallCriteria): boolean {
-  return Object.values(c).some(Boolean);
-}
-
-// meets reports whether a decode satisfies at least one ticked criterion.
-function meets(c: AutoCallCriteria, e: DecodeStatus): boolean {
-  if (c.dxcc && e.status === 'new') return true;
-  // Each status is exclusive, so a station that is new on both counts matches
-  // ONLY this criterion — ticking "new band" alone would not catch it, which is
-  // the wrong way round: it is the better catch of the two.
-  if (c.bandmode && e.status === 'new-band-mode') return true;
-  if (c.band && e.status === 'new-band') return true;
-  if (c.mode && e.status === 'new-mode') return true;
-  if (c.slot && e.status === 'new-slot') return true;
-  // A square that is merely UNCONFIRMED is not called: the QSO is already made,
-  // and calling again would work a duplicate to chase a QSL.
-  if (c.grid && e.new_grid && e.grid_state !== 'unconf') return true;
-  if (c.county && e.new_county) return true;
-  if (c.pota && e.new_pota) return true;
-  if (c.pfx && e.new_pfx) return true;
-  return false;
-}
-
-export type AutoCallDecode = {
-  call: string;
-  cq?: boolean;
-  msg?: string;
-  instance?: string;
-};
-
-// shouldAutoCall decides whether to answer one decode. The reason is returned
-// for the log: an automatic transmission with no record of WHY is the thing an
-// operator cannot argue with after the fact.
-export function shouldAutoCall(
-  s: AutoCallSettings,
-  d: AutoCallDecode,
-  e: DecodeStatus | undefined,
-  opts: {
-    // busy is "some receiver is mid-QSO", NOT "this one is transmitting".
-    //
-    // The distinction is the whole bug it fixes: with two instances the caller
-    // used to test a single global transmit flag, which belonged to whichever
-    // receiver reported last. So while slice A worked a station, slice B looked
-    // idle and auto-call started another QSO on it — and the moment either
-    // finished it chained straight into the next. One station at a time means
-    // one across ALL receivers, not one per receiver.
-    busy: boolean;
-    calledAt: Map<string, number>;
-    now: number;
-    myCall?: string;
-  },
-): { call: boolean; reason: string } {
-  const no = (why: string) => ({ call: false, reason: why });
-  if (!s.enabled) return no('off');
-  if (!e) return no('status not resolved yet');
-  const call = (d.call ?? '').trim().toUpperCase();
-  if (!call) return no('no callsign');
-  // Never answer ourselves, however the decode reached us.
-  if (opts.myCall && call === opts.myCall.trim().toUpperCase()) return no('own callsign');
-  // NOT limited to a CQ, deliberately.
-  //
-  // It used to be, on the reasoning that answering a station mid-QSO is calling
-  // over somebody. That reasoning ignored the case the feature exists for: a
-  // DXpedition running a pileup never sends CQ at all — it works caller after
-  // caller — so the rule sat out the one contact auto-call was turned on for. A
-  // new entity on 15 m FT8, decode after decode, and not a single transmission.
-  //
-  // WHEN to transmit is not ours to decide either: the Reply goes to the
-  // decoder, and MSHV starts at once while JTDX waits for a CQ. Two correct
-  // behaviours, both belonging to the program that owns the timing. Here the
-  // question is only whether the station is one the operator wants — the
-  // criteria below answer that, and the cooldown and the busy check keep it from
-  // calling twice.
-  // Not while ANY receiver is mid-QSO — transmitting, or holding a DX call it
-  // has not finished with. Starting a second exchange before the first is done
-  // is what turned this into a machine that called without stopping.
-  if (opts.busy) return no('a QSO is already in progress');
-  const last = opts.calledAt.get(call);
-  if (last !== undefined && opts.now - last < s.cooldownSec * 1000) return no('called recently');
-
-  // The watch list first: an explicitly named station outranks the general
-  // criteria, and may carry conditions of its own.
-  const watched = s.watch.some((p) => matchesWildcard(p, call));
-  if (watched) {
-    if (!anyCriterion(s.watchCriteria)) {
-      // No conditions attached: call it unless it is already worked.
-      return e.worked_call ? no('watched, but already worked') : { call: true, reason: 'watch list' };
-    }
-    return meets(s.watchCriteria, e)
-      ? { call: true, reason: 'watch list + criteria' }
-      : no('watched, but no criterion met');
-  }
-
-  if (!anyCriterion(s.criteria)) return no('no criteria ticked');
-  return meets(s.criteria, e)
-    ? { call: true, reason: 'criteria' }
-    : no('no criterion met');
-}

frontend/src/lib/clusterMacros.ts

@@ -10,7 +10,7 @@
 // Stored through writeUiPref like every other portable preference, so the
 // buttons travel with data/ rather than living in one browser profile.
 
-import { writeUiPref } from '@/lib/uiPref';
+import { writeUiPrefDebounced } from '@/lib/uiPref';
 
 export type ClusterMacro = {
   label: string; // what the button says
@@ -43,8 +43,12 @@ export function loadClusterMacros(): ClusterMacro[] {
   return out;
 }
 
+// Debounced, because this is called on every keystroke in twenty-four text
+// boxes. The local cache is written at once — it is what everything reads back
+// — and only the database write waits for the typing to stop. A round trip into
+// Go per character is what "the letters appear after I have moved on" was.
 export function saveClusterMacros(macros: ClusterMacro[]): void {
-  writeUiPref(clusterMacrosKey, JSON.stringify(macros));
+  writeUiPrefDebounced(clusterMacrosKey, JSON.stringify(macros));
 }
 
 // visibleClusterMacros drops the slots that would send nothing. The COMMAND is

frontend/src/lib/clusterPresets.ts

@@ -0,0 +1,50 @@
+// Cluster nodes worth starting from.
+//
+// Setting up a telnet cluster is the step operators get stuck on: the host and
+// the port are two pieces of information nobody has to hand, a typo produces a
+// silent failure to connect, and the ports are not guessable — a Reverse Beacon
+// feed on 7000 carries CW and RTTY while 7001 carries FT8 and FT4, which no
+// amount of trying will tell you.
+//
+// So the editor offers a list. It fills the fields and then gets out of the
+// way: everything stays editable, because a node moves or an operator wants a
+// different name for it, and a preset that could not be corrected would be
+// worse than none.
+//
+// The list is meant to grow. One entry per node, and nothing here is special —
+// a node added by hand behaves exactly the same.
+
+export type ClusterPreset = {
+  name: string;
+  host: string;
+  port: number;
+  // What it carries, in a few words: the dropdown is chosen from, not read, and
+  // "SOTA" means nothing to somebody who has never chased a summit.
+  about: string;
+  // Sent one per line after login. Empty for the nodes that need nothing.
+  init?: string;
+};
+
+export const CLUSTER_PRESETS: ClusterPreset[] = [
+  { name: 'F4BPO', host: 'cluster.f4bpo.com', port: 7300,
+    about: 'General DX cluster (OpsLog author’s node)' },
+  { name: 'DXFun', host: 'dxfun.com', port: 8000,
+    about: 'General DX cluster, worldwide' },
+  { name: 'F5LEN', host: 'dxcluster.f5len.org', port: 7373,
+    about: 'General DX cluster' },
+  { name: 'F5MZN', host: 'f5mzn.org', port: 9000,
+    about: 'General DX cluster' },
+  { name: 'KM3T', host: 'dxcc.km3t.net', port: 7373,
+    about: 'General DX cluster' },
+  { name: 'SOTA', host: 'cluster.sota.org.uk', port: 7300,
+    about: 'Summits On The Air spots' },
+  { name: 'POTA', host: 'pota-cluster.iz2lsc.eu', port: 7373,
+    about: 'Parks On The Air spots' },
+  // The two Reverse Beacon feeds are one network on two ports, and which port
+  // decides which modes arrive. Getting that wrong looks exactly like a dead
+  // node, so they are listed separately and named for what they carry.
+  { name: 'RBN CW', host: 'telnet.reversebeacon.net', port: 7000,
+    about: 'Reverse Beacon Network — CW and RTTY skimmers' },
+  { name: 'RBN FTx', host: 'telnet.reversebeacon.net', port: 7001,
+    about: 'Reverse Beacon Network — FT8 and FT4 skimmers' },
+];

frontend/src/lib/decoderName.ts

@@ -0,0 +1,25 @@
+// What a decoding program is CALLED, as against what it calls itself.
+//
+// Every WSJT-X-family packet carries an "id" naming the sending program, and
+// OpsLog shows it wherever a receiver has to be told apart from another. Most
+// of them send the name on the box: "WSJT-X", "JTDX", "MSHV".
+//
+// Nexus does not. It announces itself as "Tempo" — the name of the engine
+// inside it — so an operator running Nexus saw a program on their screen they
+// have never heard of, and had to work out that it was theirs.
+//
+// Only the LABEL is translated. The id stays the routing key everywhere else:
+// a Reply, a Halt and the auto-call's own bookkeeping are matched against what
+// the program sent, and renaming that would send them to nobody.
+const NAMES: Record<string, string> = {
+  TEMPO: 'Nexus',
+};
+
+export function decoderName(id?: string): string {
+  const raw = (id ?? '').trim();
+  if (!raw) return '';
+  // Matched on the leading word: some programs append a version or an instance
+  // number ("WSJT-X - 2", "Tempo 1.4"), and the name is the part before it.
+  const head = raw.split(/[\s\-–—]+/)[0].toUpperCase();
+  return NAMES[head] ?? raw;
+}

frontend/src/lib/maidenhead.ts

@@ -172,6 +172,50 @@ export function greatCirclePoints(
   return out;
 }
 
+// splitAtAntimeridian cuts a continuous (unwrapped) path into the pieces that
+// fit on a map showing ONE world, each piece with longitudes back inside ±180.
+//
+// greatCirclePoints deliberately lets longitude run past ±180 so the polyline
+// stays smooth. That is right for a map with repeating world copies, and wrong
+// for one without: an arc from Australia to South America came out at 190°,
+// 210°, 250° — drawn into the empty space off the right-hand edge, ending
+// nowhere, while its own end marker sat correctly on the far left. From VK,
+// where most paths cross the antimeridian, that was most of the map's arcs.
+//
+// Each crossing ends one piece at exactly ±180 and starts the next at the
+// opposite edge, at the SAME latitude, so the line leaves one side of the map
+// and re-enters the other at the height it left. Leaflet takes the result as a
+// multi-polyline, so one path is still one layer.
+export function splitAtAntimeridian(pts: [number, number][]): [number, number][][] {
+  if (pts.length === 0) return [];
+  // Which copy of the world a longitude belongs to: 0 is the map's own.
+  const world = (lon: number) => Math.floor((lon + 180) / 360);
+  const norm = (lon: number) => lon - 360 * world(lon);
+  const out: [number, number][][] = [];
+  let cur: [number, number][] = [];
+  for (let i = 0; i < pts.length; i++) {
+    const [lat, lon] = pts[i];
+    if (i > 0) {
+      const [pLat, pLon] = pts[i - 1];
+      const wPrev = world(pLon), wCur = world(lon);
+      if (wPrev !== wCur) {
+        const east = wCur > wPrev;
+        // The meridian actually crossed, in unwrapped degrees.
+        const edge = 180 + 360 * Math.min(wPrev, wCur);
+        const f = (edge - pLon) / (lon - pLon);
+        const edgeLat = pLat + f * (lat - pLat);
+        cur.push([edgeLat, east ? 180 : -180]);
+        out.push(cur);
+        cur = [[edgeLat, east ? -180 : 180]];
+      }
+    }
+    cur.push([lat, norm(lon)]);
+  }
+  if (cur.length > 1) out.push(cur);
+  else if (cur.length === 1 && out.length === 0) out.push(cur);
+  return out;
+}
+
 function toRad(d: number): number { return (d * Math.PI) / 180; }
 function toDeg(r: number): number { return (r * 180) / Math.PI; }
 

frontend/src/lib/mapBase.ts

@@ -0,0 +1,38 @@
+// Which imagery each map draws on — one choice per map.
+//
+// The world map and the grid-square map used to share a single key, so picking
+// satellite imagery to look at grids also repainted the main map, and there was
+// no way to have terrain on one and plain streets on the other. They are
+// different maps answering different questions, and the imagery that suits one
+// is not the imagery that suits the next.
+//
+// Portable (see lib/uiPref) like the remembered views in lib/mapView: a copied
+// data folder brings the choices with it.
+import { writeUiPref } from '@/lib/uiPref';
+import type { BasemapKey } from '@/components/MainMap';
+
+// The keys in use. Named here rather than typed at each call site so a rename
+// cannot silently orphan somebody's choice.
+export const MAP_BASE_WORLD = 'opslog.mapBasemap';
+export const MAP_BASE_GRIDS = 'opslog.gridMapBase';
+export const MAP_BASE_FT = 'opslog.ftmapBase';
+export const MAP_BASE_SAT = 'opslog.satMapBase';
+
+const VALID = ['light', 'voyager', 'street', 'satellite'];
+
+// loadMapBase reads one map's choice.
+//
+// inheritFrom exists for the split: the grid map's choice lived under the world
+// map's key until they were separated, so an operator who had chosen imagery
+// there keeps it instead of being silently reset to the default.
+export function loadMapBase(key: string, fallback: BasemapKey, inheritFrom?: string): BasemapKey {
+  const read = (k: string) => {
+    const v = localStorage.getItem(k);
+    return v && VALID.includes(v) ? (v as BasemapKey) : null;
+  };
+  return read(key) ?? (inheritFrom ? read(inheritFrom) : null) ?? fallback;
+}
+
+export function saveMapBase(key: string, v: BasemapKey): void {
+  writeUiPref(key, v);
+}

frontend/src/lib/mapView.ts

@@ -0,0 +1,31 @@
+// Remembered map views — where each map was left, per map.
+//
+// Panning and zooming a map is an operator saying "this is the part of the world
+// I work". Throwing that away on every tab switch made the maps something to
+// set up again each time rather than something to glance at, and the world map
+// was the only one that remembered anything.
+//
+// One key per map, and portable (see lib/uiPref) like the world map's own: a
+// copied data folder brings the views with it.
+import { writeUiPref } from '@/lib/uiPref';
+
+export type MapView = { lat: number; lon: number; zoom: number };
+
+// The keys in use. Named here rather than typed at each call site so a rename
+// cannot silently orphan somebody's saved view.
+export const MAP_VIEW_WORLD = 'opslog.mapView';
+export const MAP_VIEW_FT = 'opslog.ftMapView';
+export const MAP_VIEW_GRIDS = 'opslog.gridMapView';
+
+export function loadMapView(key: string): MapView | null {
+  try {
+    const v = JSON.parse(localStorage.getItem(key) || 'null');
+    return v && typeof v.zoom === 'number' && typeof v.lat === 'number' && typeof v.lon === 'number' ? v : null;
+  } catch {
+    return null; // corrupt or unreadable → open where the map would by default
+  }
+}
+
+export function saveMapView(key: string, lat: number, lon: number, zoom: number): void {
+  writeUiPref(key, JSON.stringify({ lat, lon, zoom }));
+}

frontend/src/lib/rotorStyle.ts

@@ -0,0 +1,39 @@
+// Which rotor dial to draw.
+//
+// Two compasses ship: the current one (night map, square scale, mouse pointer,
+// target marker) and the original small light-map dial. Neither is more correct
+// than the other — one operator reads the big map at a glance, another wants the
+// compact dial that was there before — so it is a preference, not a migration.
+//
+// A UI preference rather than a settings-database key: it decides what a widget
+// looks like, nothing is transmitted from it, and it belongs to the screen it is
+// read on. It is portable all the same (see lib/uiPref), so a copied folder
+// keeps the dial its owner chose.
+import { writeUiPref } from '@/lib/uiPref';
+
+export const KEY_ROTOR_STYLE = 'opslog.rotorStyle';
+
+export type RotorStyle = 'modern' | 'classic';
+
+export function rotorStyle(): RotorStyle {
+  try {
+    return localStorage.getItem(KEY_ROTOR_STYLE) === 'classic' ? 'classic' : 'modern';
+  } catch {
+    return 'modern';
+  }
+}
+
+// Same shape as the distance unit: the compasses are rendered from two call
+// sites, and a preference changed in Settings has to reach both without either
+// of them polling for it.
+const listeners = new Set<() => void>();
+
+export function setRotorStyle(style: RotorStyle): void {
+  writeUiPref(KEY_ROTOR_STYLE, style);
+  listeners.forEach((l) => l());
+}
+
+export function subscribeRotorStyle(fn: () => void): () => void {
+  listeners.add(fn);
+  return () => { listeners.delete(fn); };
+}

frontend/src/lib/rst.ts

@@ -36,3 +36,85 @@ export function rstOptions(mode: string, lists: RSTLists): string[] {
   if (l && l.length) return l;
   return cat === 'phone' ? ['59', '58', '57'] : cat === 'cw' ? ['599', '589', '579'] : ['+00', '-10', '-20'];
 }
+
+// stepRST moves a report one step up or down, the way an operator would say it.
+//
+// The dropdown beside these fields is a list of the values worth having to hand,
+// not of every legal report: nobody keeps 41 dB figures in it. So the wheel
+// works on the VALUE, not on the list — a digital report moves by a decibel and
+// an RST by one S-unit, which is what the hand on the wheel is asking for.
+//
+// dir is +1 for wheel up (a better report) and -1 for down.
+export function stepRST(value: string, dir: number, mode: string): string {
+  const v = (value || '').trim();
+  if (v === '') return v;
+  if (rstCategory(mode) === 'digital') {
+    // A dB report: "-12", "+05", "0". Kept in its own shape — signed and two
+    // digits — because that is how every decoder writes it and how the operator
+    // reads it back off the screen.
+    const n = parseInt(v, 10);
+    if (!Number.isFinite(n)) return v;
+    // The range WSJT-X itself reports in, with room either side. Beyond it the
+    // number stops meaning anything.
+    const next = Math.max(-30, Math.min(35, n + dir));
+    return (next < 0 ? '-' : '+') + String(Math.abs(next)).padStart(2, '0');
+  }
+  // RST/RS, and the S9+ ladder above it. What an operator counts through is
+  //
+  //   … 57  58  59  59+5  59+10  59+15  59+20 …
+  //
+  // — one S-unit up to nine, then five decibels at a time, because that is how
+  // a strong signal is reported and how the S-meter is read (see sMeterRST).
+  // Stepping the S digit and leaving the "+20" where it was would have gone
+  // from 59+20 to 58+20, which nobody has ever said on the air.
+  //
+  // R and T do not move: they are judgements about readability and tone, and a
+  // wheel has no business changing them.
+  const m = /^(\d)(\d)(\d?)(?:\+(\d+))?$/.exec(v);
+  if (!m) return v;
+  const head = m[1];
+  const tone = m[3];
+  let sUnit = parseInt(m[2], 10);
+  let over = m[4] === undefined ? 0 : parseInt(m[4], 10);
+  if (over > 0) {
+    // Above S9: five at a time, and back down through +5 to a plain 59.
+    over = Math.max(0, Math.min(60, over + dir * 5));
+  } else if (sUnit >= 9 && dir > 0) {
+    over = 5; // 59 → 59+5
+  } else {
+    sUnit = Math.max(1, Math.min(9, sUnit + dir));
+  }
+  return head + String(sUnit) + tone + (over > 0 ? '+' + over : '');
+}
+
+// rstFitsMode says whether a report belongs to the family a mode reports in.
+//
+// The three families are written differently and are not interchangeable: a
+// signed decibel figure ("+00"), a three-figure RST ("599"), a two-figure RS
+// ("59", with an optional "+20" above S9). "+00" on SSB is not a weak report,
+// it is not a report at all.
+export function rstFitsMode(value: string, mode: string): boolean {
+  const v = (value || '').trim();
+  if (v === '') return false;
+  switch (rstCategory(mode)) {
+    case 'digital': return /^[+-]\d{1,2}$/.test(v);
+    case 'cw': return /^\d{3}(\+\d+)?$/.test(v);
+    default: return /^\d{2}(\+\d+)?$/.test(v);
+  }
+}
+
+// convertRST carries a report across the CW/phone divide, keeping the operator's
+// own judgement of the signal: 57 becomes 579, 599 becomes 59.
+//
+// Only between those two — a decibel figure says nothing about readability and
+// an RST says nothing in decibels, so there the preset is the honest answer.
+// Returns '' when it cannot be done.
+export function convertRST(value: string, toMode: string): string {
+  const v = (value || '').trim();
+  const to = rstCategory(toMode);
+  if (to === 'digital') return '';
+  const m = /^(\d)(\d)(\d?)((?:\+\d+)?)$/.exec(v);
+  if (!m) return '';
+  if (to === 'cw') return m[1] + m[2] + '9' + m[4];  // RS → RST, tone 9
+  return m[1] + m[2] + m[4];                        // RST → RS, tone dropped
+}

frontend/src/lib/spot.ts

@@ -15,6 +15,15 @@ export function cleanSpotter(s: string): string {
 // alone instead of guessing wrong.
 export function inferSpotMode(comment: string, freqHz: number): string {
   const c = (comment || '').toUpperCase();
+  // SuperFox and Fox/Hound are FT8 — they are WSJT-X's DXpedition transmit modes,
+  // not modes of their own, and they turn up in a comment written every way an
+  // operator can shorten them: "super fox", SFOX, S/F, F/H.
+  //
+  // A spot commented "super fox" fell through to the band plan and came out
+  // DATA, and that verdict is not cosmetic: the
+  // band+mode status is computed from this answer, so a ZD8 on 21.071 read as a
+  // new DATA slot rather than the new FT8 one it is.
+  if (/\bSUPER\s*FOX\b|\bSFOX\b|\bS\/F\b|\bFOX\s*\/?\s*HOUND\b|\bF\/H\b/.test(c)) return 'FT8';
   if (/\bFT8\b/.test(c))   return 'FT8';
   if (/\bFT4\b/.test(c))   return 'FT4';
   if (/\bJS8\b/.test(c))   return 'JS8';

frontend/src/lib/theme.tsx

@@ -7,14 +7,14 @@ import { GetUIPref } from '../../wailsjs/go/main/App';
 // preference. The choice is persisted (localStorage + portable UI pref, so it
 // travels with the data/ folder like the language).
 export type ThemeChoice = 'auto' | 'light-warm' | 'light-cool' | 'light-sage' | 'light-nordic' | 'sahara'
-  | 'dim-slate' | 'dark-warm' | 'dark-graphite' | 'dark-indigo' | 'dark-teal' | 'dark-plum' | 'high-contrast';
+  | 'dim-slate' | 'dark-warm' | 'dark-graphite' | 'dark-indigo' | 'dark-teal' | 'dark-plum' | 'dxhunter' | 'dxhunter-orange' | 'high-contrast';
 
 // Selectable, concrete themes (excludes 'auto') in display order: lights first,
 // then darks, with high-contrast last — it is an accessibility choice, not a
 // taste one, and listing it among the moods buries it.
 export const CONCRETE_THEMES: Exclude<ThemeChoice, 'auto'>[] = [
   'light-warm', 'light-cool', 'light-sage', 'light-nordic', 'sahara',
-  'dim-slate', 'dark-warm', 'dark-graphite', 'dark-indigo', 'dark-teal', 'dark-plum',
+  'dim-slate', 'dark-warm', 'dark-graphite', 'dark-indigo', 'dark-teal', 'dark-plum', 'dxhunter', 'dxhunter-orange',
   'high-contrast',
 ];
 

frontend/src/lib/uiPref.ts

@@ -29,10 +29,14 @@ const PORTABLE_KEYS = [
   'opslog.bandMapBands',  // bands shown side-by-side in the Band Map tab
   'opslog.mapAutoZoomDX', // Main map: auto-zoom to the DX (vs free pan/zoom)
   'opslog.mapView',       // Main map: remembered free-pan view (lat/lon/zoom)
+  // The same, for the FT decodes map and the grid-square map: a view an
+  // operator set up is theirs, and it should follow the folder like the rest.
+  'opslog.ftMapView', 'opslog.gridMapView', 'opslog.satMapView',
   'opslog.lookupOnBlur',  // run the callsign lookup on blur instead of while typing
   'opslog.groupDigitalSlots', // matrix + cluster: all digital modes count as ONE (DXCC-style) instead of per-mode slots
   'opslog.clusterShowFilters', // cluster filter sidebar shown (tab + Main pane)
-  'opslog.mapBasemap',    // world map basemap (light / street / satellite)
+  // One imagery choice per map — world, grid squares, FT map, satellites.
+  'opslog.mapBasemap', 'opslog.gridMapBase', 'opslog.ftmapBase', 'opslog.satMapBase',
   'opslog.dateFormat',    // how dates are DISPLAYED (iso / fr / us); storage stays ISO
   'opslog.mapGreyline',   // world map: grey line (day/night terminator) shown
   'opslog.awardRefSort', 'opslog.awardRefSortDir', // award reference table: sort column and direction
@@ -44,6 +48,10 @@ const PORTABLE_KEYS = [
   'opslog.iaruRegion',    // IARU region (1/2/3) — band edges and segments on the band maps
   'opslog.chasePota',     // show POTA references and the NEW POTA marker on spots
   'opslog.chaseSota',     // show SOTA references on spots
+  // The other chase switches. In the DB as well as locally because AUTO-CALL
+  // reads them: what the operator does not hunt is not something to transmit
+  // for, and the backend cannot see localStorage.
+  'opslog.chasePfx', 'opslog.chaseCounty', 'opslog.chaseState', 'opslog.chaseGrids',
   'opslog.activeTab',     // last selected tab
   'opslog.mainSplit',    // Main tab: width share of the left pane (percent) — legacy, read once to seed mainShares
   'opslog.mainShares',   // Main tab: column shares per column count, as {2:[..],3:[..],4:[..]}
@@ -51,6 +59,8 @@ const PORTABLE_KEYS = [
   'opslog.clusterMuteWorked',    // cluster/band map: no colour or badge on worked spots
   'opslog.clusterSlotHighlight', // cluster/band map: colour calls not worked on this band+mode
   'opslog.bandMapWidth',    // docked band map: column width (px)
+  'opslog.satSideWidth', 'opslog.satSideShown', // Satellites tab: readout column width, and whether it is shown
+  'opslog.satSkyShown',  // Satellites tab: the polar sky plot
   'opslog.bandMapTabWidth', // Band map tab: shared card width (px)
   'opslog.bandMapZoom',     // band map zoom (px/kHz step) remembered per band, as one {band: index} map
   'opslog.decodeColWidths', // FT decodes table: per-column widths (px), as one {col: px} map
@@ -83,6 +93,50 @@ export async function syncPortablePrefs(): Promise<void> {
   }));
 }
 
+// writeUiPrefDebounced is writeUiPref for a value that changes AS SOMEBODY
+// TYPES.
+//
+// The local cache is written at once, because that is what the interface reads
+// back and it costs nothing. The DATABASE write is held until the typing stops:
+// writeUiPref crosses into Go and writes a row, and doing that per character in
+// a text box is a round trip per keystroke — twenty-four boxes of cluster
+// macros was exactly that, and it showed as characters appearing after the
+// finger had left the key.
+//
+// Pending writes are flushed when the page goes away, so a value typed and
+// immediately followed by a close is not lost.
+const pendingPrefs = new Map<string, { value: string; timer: number }>();
+
+export function writeUiPrefDebounced(key: string, value: string, ms = 400): void {
+  try { localStorage.setItem(key, value); } catch { /* quota / private mode */ }
+  const prev = pendingPrefs.get(key);
+  if (prev) window.clearTimeout(prev.timer);
+  const timer = window.setTimeout(() => {
+    pendingPrefs.delete(key);
+    SetUIPref(key, value).catch((e: any) => {
+      try { LogUIError('ui pref', 'could not store ' + key + ': ' + String(e?.message ?? e), ''); } catch { /* nothing left to try */ }
+    });
+  }, ms);
+  pendingPrefs.set(key, { value, timer });
+}
+
+// flushUiPrefs writes every pending value immediately.
+export function flushUiPrefs(): void {
+  for (const [key, p] of pendingPrefs) {
+    window.clearTimeout(p.timer);
+    SetUIPref(key, p.value).catch(() => { /* the local cache still holds it */ });
+  }
+  pendingPrefs.clear();
+}
+if (typeof window !== 'undefined') {
+  window.addEventListener('beforeunload', flushUiPrefs);
+  // Closing the app does not always fire beforeunload in a WebView; a hidden
+  // page is the earlier and more reliable signal.
+  document.addEventListener('visibilitychange', () => {
+    if (document.visibilityState === 'hidden') flushUiPrefs();
+  });
+}
+
 // writeUiPref write-throughs a value to the local cache AND the portable DB.
 // Use it everywhere these keys are written instead of localStorage.setItem.
 export function writeUiPref(key: string, value: string): void {

frontend/src/lib/watchlistSpots.ts

@@ -0,0 +1,133 @@
+// What the watch list is HEARING, and what of it is still needed.
+//
+// Two places ask the same question — the Watchlist tab and the docked widget —
+// and the answer involves a debounced round trip to the logbook per visible
+// slot. Written twice it would be two definitions of "needed" drifting apart,
+// and two bursts of the same query on every spot; written here it is one.
+import { useEffect, useMemo, useRef, useState } from 'react';
+import type { ClusterSpot } from '@/components/ClusterGrid';
+import { inferSpotMode } from '@/lib/spot';
+import { WatchlistWorkedSlots } from '../../wailsjs/go/main/App';
+
+export interface WLEntry {
+  callsign: string; lastSeenStr: string; addedAt: string; spotCount: number;
+  isContest: boolean; notify: boolean;
+  isExpedition: boolean; clubLogQSOs24h: number; clubLogTotalQSOs: number;
+  clubLogHasOQRS: boolean; clubLogLiveStream: boolean;
+}
+
+// A spot is ON AIR while its last sighting is this fresh.
+export const ON_AIR_MS = 10 * 60 * 1000;
+
+// Exact unless the entry carries a trailing * — the same rule the backend's
+// Match applies to the live stream, mirrored so the list and the alerts can
+// never disagree about what an entry covers.
+export function matchesEntry(call: string, pattern: string): boolean {
+  const c = call.toUpperCase();
+  if (pattern.endsWith('*')) {
+    const p = pattern.slice(0, -1);
+    return p !== '' && c.startsWith(p);
+  }
+  return c === pattern;
+}
+
+// What the cluster's verdict is worth saying, and in what colour.
+//
+// The order of severity is the one the band map and Chase new use: a new entity
+// first, then the band and mode inside it. Shared because the tab and the docked
+// widget must not label the same spot differently — an operator reads one of
+// them to decide whether to leave what they are doing.
+export const NEW_BADGES: Record<string, { key: string; colour: string }> = {
+  'new': { key: 'wl.newDxcc', colour: 'var(--danger)' },
+  'new-band-mode': { key: 'clg2.newBandMode', colour: 'var(--danger)' },
+  'new-band': { key: 'clg2.newBand', colour: 'var(--warning)' },
+  'new-mode': { key: 'clg2.newMode', colour: 'var(--caution)' },
+  'new-slot': { key: 'clg2.newSlot', colour: '#5AC8FA' },
+};
+
+export function newBadge(status?: string): { key: string; colour: string } | null {
+  return (status && NEW_BADGES[status]) || null;
+}
+
+export interface WatchlistSpots {
+  // The raw verdicts, exposed for dependency arrays: it changes only when an
+  // answer arrives, where the closures below are new on every render.
+  worked: Record<string, boolean>;
+  // The spots each entry covers, deduplicated by band+mode.
+  spotsFor: Map<string, ClusterSpot[]>;
+  // Worked on this exact slot (and, for a contest entry, today).
+  workedFor: (e: WLEntry, s: ClusterSpot) => boolean;
+  // Whether the logbook has actually answered for this pair yet. A spot whose
+  // verdict has not come back is NOT drawn: showing it as needed and
+  // withdrawing it half a second later made the list twitch on every burst,
+  // and nobody needs a spot 400 ms early — they need it settled.
+  settled: (e: WLEntry, s: ClusterSpot) => boolean;
+  onAir: (e: WLEntry) => boolean;
+}
+
+export function useWatchlistSpots(entries: WLEntry[], spots: ClusterSpot[]): WatchlistSpots {
+  const [worked, setWorked] = useState<Record<string, boolean>>({});
+
+  const spotsFor = useMemo(() => {
+    const map = new Map<string, ClusterSpot[]>();
+    for (const e of entries) map.set(e.callsign, []);
+    for (const s of spots) {
+      for (const e of entries) {
+        if (matchesEntry(s.dx_call ?? '', e.callsign)) { map.get(e.callsign)!.push(s); break; }
+      }
+    }
+    for (const [k, list] of map) {
+      const seen = new Set<string>();
+      map.set(k, list.filter((s) => {
+        const key = `${(s.band ?? '')}|${inferSpotMode(s.comment ?? '', s.freq_hz)}|${s.dx_call}`;
+        if (seen.has(key)) return false;
+        seen.add(key);
+        return true;
+      }));
+    }
+    return map;
+  }, [spots, entries]);
+
+  // Debounced: a spot burst must cost one round trip, not one per spot.
+  const queryTimer = useRef<number | undefined>(undefined);
+  useEffect(() => {
+    if (queryTimer.current) window.clearTimeout(queryTimer.current);
+    queryTimer.current = window.setTimeout(async () => {
+      const queries: { call: string; band: string; mode: string; contest: boolean }[] = [];
+      const keys: string[] = [];
+      for (const e of entries) {
+        for (const s of spotsFor.get(e.callsign) ?? []) {
+          const mode = inferSpotMode(s.comment ?? '', s.freq_hz) || '';
+          queries.push({ call: s.dx_call, band: s.band ?? '', mode, contest: e.isContest });
+          keys.push(`${s.dx_call}|${s.band ?? ''}|${mode}|${e.isContest ? 1 : 0}`);
+        }
+      }
+      if (queries.length === 0) { setWorked({}); return; }
+      try {
+        const res: boolean[] = (await WatchlistWorkedSlots(queries as any)) ?? [];
+        // MERGED, not replaced: replacing made every already-answered key
+        // momentarily unknown on each refresh, which re-hid settled lines.
+        setWorked((prev) => {
+          const next = { ...prev };
+          keys.forEach((k, i) => { next[k] = !!res[i]; });
+          return next;
+        });
+      } catch { /* the badges just stay conservative */ }
+    }, 150) as unknown as number;
+    return () => { if (queryTimer.current) window.clearTimeout(queryTimer.current); };
+  }, [spotsFor, entries]);
+
+  const wkey = (e: WLEntry, s: ClusterSpot) =>
+    `${s.dx_call}|${s.band ?? ''}|${inferSpotMode(s.comment ?? '', s.freq_hz) || ''}|${e.isContest ? 1 : 0}`;
+
+  return {
+    worked,
+    spotsFor,
+    workedFor: (e, s) => worked[wkey(e, s)] ?? false,
+    settled: (e, s) => wkey(e, s) in worked,
+    onAir: (e) => (spotsFor.get(e.callsign) ?? []).some((s) => {
+      const ts = Date.parse(String((s as any).received_at ?? ''));
+      return ts > 0 && Date.now() - ts < ON_AIR_MS;
+    }),
+  };
+}

frontend/src/style.css

@@ -574,8 +574,8 @@
      "entity confirmed" cell would read as a button. */
   --mx-call-conf: #22c55e;
   --mx-call-work: #2c7a52;
-  --mx-dx-conf:   #22d3ee;
-  --mx-dx-work:   #1b6b7c;
+  --mx-dx-conf:   #a78bfa;
+  --mx-dx-work:   #5b4a9e;
   --mx-none:      #2c2f4d;
 
   --scrollbar-thumb: #383c63;
@@ -862,6 +862,156 @@
   color-scheme: light;
 }
 
+/* ---- Theme 13: DXHunter — its own slate and blue -----------------------
+   Ported so an operator running both side by side does not switch between two
+   colour worlds every time they look up. It is Tailwind's slate scale, which
+   is what DXHunter is built on: page at slate-900, panels at slate-800, rules
+   at slate-700, and blue-500 for the accent — counted across its sources, not
+   guessed from one panel: blue is 132 uses to violet's 25, and the violet is
+   the PSK Reporter panel alone. Active tab, focus border, primary button: all
+   blue-500. The status colours are DXHunter's too — emerald for good, amber
+   for attention, cyan for information, red for trouble — so a green number
+   means the same thing in both windows. */
+[data-theme="dxhunter"] {
+  --background: #0f172a;             /* slate-900 — the page */
+  --foreground: #e2e8f0;             /* slate-200 */
+  --card: #1e293b;                   /* slate-800 — panels lift off the page */
+  --card-foreground: #e2e8f0;
+  --popover: #1e293b;
+  --popover-foreground: #e2e8f0;
+  --primary: #3b82f6;                /* blue-500 — active tabs, focus, buttons */
+  --primary-foreground: #f8fafc;
+  --secondary: #273449;
+  --secondary-foreground: #e2e8f0;
+  --muted: #1c2941;                  /* toolbars / table headers */
+  --muted-foreground: #94a3b8;       /* slate-400 — DXHunter's muted text */
+  --accent: #2c3b54;                 /* hover / selection tint */
+  --accent-foreground: #cbd5e1;
+  --destructive: #ef4444;
+  --destructive-foreground: #fef2f2;
+  --destructive-muted: #3a1518;
+  --destructive-muted-foreground: #fca5a5;
+  --border: #334155;                 /* slate-700 — every rule in DXHunter */
+  --input: #334155;
+  --ring: #60a5fa;                   /* blue-400 — its focus border */
+
+  --success: #34d399;                /* emerald-400 — "online", confirmed */
+  --success-foreground: #04211a;
+  --success-muted: #0e3029;
+  --success-muted-foreground: #6ee7b7;
+  --success-border: #17564a;
+
+  --warning: #fbbf24;                /* amber-400 */
+  --warning-foreground: #211803;
+  --warning-muted: #33280f;
+  --warning-muted-foreground: #fcd34d;
+  --warning-border: #4f3e15;
+
+  --caution: #facc15;
+  --caution-foreground: #211e04;
+  --caution-muted: #322d0e;
+  --caution-muted-foreground: #fde047;
+  --caution-border: #4b4315;
+
+  --danger: #f87171;                 /* red-400 — rose is barely used there */
+  --danger-foreground: #250912;
+  --danger-muted: #3a1621;
+  --danger-muted-foreground: #fda4af;
+  --danger-border: #5a2735;
+
+  --info: #22d3ee;                   /* cyan-400 — "heard near you" */
+  --info-foreground: #04212a;
+  --info-muted: #0c2f3b;
+  --info-muted-foreground: #67e8f9;
+  --info-border: #155e6e;
+
+  /* Blue is the primary, so the entity ramp goes VIOLET rather than reading
+     as a button — and violet is where DXHunter puts its own second accent. */
+  --mx-call-conf: #22c55e;
+  --mx-call-work: #2c7a52;
+  --mx-dx-conf:   #a78bfa;
+  --mx-dx-work:   #5b4a9e;
+  --mx-none:      #334155;
+
+  --scrollbar-thumb: #334155;        /* DXHunter's own scrollbar */
+  --scrollbar-thumb-hover: #475569;
+  --card-shadow: 0 1px 2px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(226, 232, 240, 0.05);
+  color-scheme: dark;
+}
+
+/* ---- Theme 14: DXHunter orange — the same slate, OpsLog's own accent --
+   DXHunter's slate, kept exactly — page, panels, rules, muted text, and its
+   status colours — with OpsLog's orange in place of its blue. For an operator
+   who wants the two windows to sit together without OpsLog losing the accent
+   it is recognised by. The entity ramp goes VIOLET here for the same reason as
+   in the blue version: it must not read as the accent. */
+[data-theme="dxhunter-orange"] {
+  --background: #0f172a;             /* slate-900 — the page */
+  --foreground: #e2e8f0;             /* slate-200 */
+  --card: #1e293b;                   /* slate-800 — panels lift off the page */
+  --card-foreground: #e2e8f0;
+  --popover: #1e293b;
+  --popover-foreground: #e2e8f0;
+  --primary: #f97316;                /* orange-500 — OpsLog's own accent */
+  --primary-foreground: #1c0a02;
+  --secondary: #273449;
+  --secondary-foreground: #e2e8f0;
+  --muted: #1c2941;                  /* toolbars / table headers */
+  --muted-foreground: #94a3b8;       /* slate-400 — DXHunter's muted text */
+  --accent: #2c3b54;                 /* hover / selection tint */
+  --accent-foreground: #cbd5e1;
+  --destructive: #ef4444;
+  --destructive-foreground: #fef2f2;
+  --destructive-muted: #3a1518;
+  --destructive-muted-foreground: #fca5a5;
+  --border: #334155;                 /* slate-700 — every rule in DXHunter */
+  --input: #334155;
+  --ring: #fdba74;                   /* orange-300 focus ring */
+
+  --success: #34d399;                /* emerald-400 — "online", confirmed */
+  --success-foreground: #04211a;
+  --success-muted: #0e3029;
+  --success-muted-foreground: #6ee7b7;
+  --success-border: #17564a;
+
+  --warning: #fbbf24;                /* amber-400 */
+  --warning-foreground: #211803;
+  --warning-muted: #33280f;
+  --warning-muted-foreground: #fcd34d;
+  --warning-border: #4f3e15;
+
+  --caution: #facc15;
+  --caution-foreground: #211e04;
+  --caution-muted: #322d0e;
+  --caution-muted-foreground: #fde047;
+  --caution-border: #4b4315;
+
+  --danger: #f87171;                 /* red-400 — rose is barely used there */
+  --danger-foreground: #250912;
+  --danger-muted: #3a1621;
+  --danger-muted-foreground: #fda4af;
+  --danger-border: #5a2735;
+
+  --info: #22d3ee;                   /* cyan-400 — "heard near you" */
+  --info-foreground: #04212a;
+  --info-muted: #0c2f3b;
+  --info-muted-foreground: #67e8f9;
+  --info-border: #155e6e;
+
+  /* Blue is the primary, so the entity ramp goes VIOLET rather than reading
+     as a button — and violet is where DXHunter puts its own second accent. */
+  --mx-call-conf: #22c55e;
+  --mx-call-work: #2c7a52;
+  --mx-dx-conf:   #a78bfa;
+  --mx-dx-work:   #5b4a9e;
+  --mx-none:      #334155;
+
+  --scrollbar-thumb: #334155;        /* DXHunter's own scrollbar */
+  --scrollbar-thumb-hover: #475569;
+  --card-shadow: 0 1px 2px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(226, 232, 240, 0.05);
+  color-scheme: dark;
+}
+
 /* ── Data-viz palette (Statistics dashboard) ────────────────────────────────
    A VALIDATED categorical palette, not hand-picked: the slot ORDER is what makes
    it colour-blind-safe (worst adjacent ΔE 24.2 light / 10.3 dark), so never
@@ -905,7 +1055,9 @@
 [data-theme="high-contrast"],
 [data-theme="dark-indigo"],
 [data-theme="dark-teal"],
-[data-theme="dark-plum"] {
+[data-theme="dark-plum"],
+[data-theme="dxhunter"],
+[data-theme="dxhunter-orange"] {
   --chart-1: #3987e5;
   --chart-2: #199e70;
   --chart-3: #c98500;

frontend/src/version.ts

@@ -1,6 +1,6 @@
 // Single source of truth for the app version shown in the UI (header + About).
 // Bump this on a release (the release script updates it alongside telemetry.go).
-export const APP_VERSION = '0.27.8';
+export const APP_VERSION = '0.27.17';
 
 // Author / credits, shown in Help -> About.
 export const APP_AUTHOR = 'F4BPO';

frontend/wailsjs/go/main/App.d.ts

@@ -15,9 +15,11 @@ import {cluster} from '../models';
 import {dxped} from '../models';
 import {extsvc} from '../models';
 import {powergenius} from '../models';
+import {pskrtgt} from '../models';
 import {pskr} from '../models';
 import {psu} from '../models';
 import {spe} from '../models';
+import {sat} from '../models';
 import {solar} from '../models';
 import {tunergenius} from '../models';
 import {webpub} from '../models';
@@ -51,6 +53,8 @@ export function ActiveRadioMyRig():Promise<string>;
 
 export function AddQSO(arg1:qso.QSO):Promise<number>;
 
+export function AddSatelliteElements(arg1:string):Promise<number>;
+
 export function AmpFanMode(arg1:string,arg2:string):Promise<void>;
 
 export function AmpOperate(arg1:string,arg2:boolean):Promise<void>;
@@ -415,6 +419,10 @@ export function GetAudioMonitorPref():Promise<boolean>;
 
 export function GetAudioSettings():Promise<main.AudioSettings>;
 
+export function GetAutoCallSettings():Promise<main.AutoCallSettings>;
+
+export function GetAutoCallStatus():Promise<main.AutoCallStatus>;
+
 export function GetAutostartPrograms():Promise<Array<main.AutostartProgram>>;
 
 export function GetAward(arg1:string,arg2:string):Promise<award.Result>;
@@ -449,6 +457,8 @@ export function GetChangelog():Promise<Array<main.ChangelogEntry>>;
 
 export function GetChaseNew():Promise<boolean>;
 
+export function GetChaseNewBands():Promise<Array<string>>;
+
 export function GetChaseNewGrids():Promise<boolean>;
 
 export function GetChaseNewSpots():Promise<Array<main.ChaseNewSpot>>;
@@ -549,8 +559,12 @@ export function GetPGXLStatus():Promise<powergenius.Status>;
 
 export function GetPOTAToken():Promise<string>;
 
+export function GetPSKAnalysis():Promise<pskrtgt.Analysis>;
+
 export function GetPSKReporterStatus():Promise<pskr.Status>;
 
+export function GetPSKTargetSettings():Promise<main.PSKTargetSettings>;
+
 export function GetPSUSettings():Promise<main.PSUSettings>;
 
 export function GetPSUStatus():Promise<psu.Status>;
@@ -577,6 +591,30 @@ export function GetRowColors():Promise<main.RowColorSettings>;
 
 export function GetSPEStatus():Promise<spe.Status>;
 
+export function GetSatSettings():Promise<main.SatSettings>;
+
+export function GetSatelliteBirds():Promise<Array<main.SatBird>>;
+
+export function GetSatelliteGroundTrack(arg1:string,arg2:number):Promise<Array<sat.Position>>;
+
+export function GetSatelliteNames():Promise<Array<string>>;
+
+export function GetSatelliteNextPass(arg1:string):Promise<main.SatPassInfo>;
+
+export function GetSatelliteObserver():Promise<Record<string, any>>;
+
+export function GetSatellitePasses(arg1:Array<string>,arg2:number):Promise<Array<sat.Pass>>;
+
+export function GetSatellitePositions(arg1:Array<string>):Promise<Array<sat.Position>>;
+
+export function GetSatelliteSkyTrack(arg1:string,arg2:number):Promise<Array<main.SatSkyPoint>>;
+
+export function GetSatelliteTLEInfo():Promise<main.SatTLEInfo>;
+
+export function GetSatelliteTracking():Promise<main.SatTrackStatus>;
+
+export function GetSatelliteTuning(arg1:string,arg2:number,arg3:number):Promise<main.SatTuning>;
+
 export function GetScpStatus():Promise<main.ScpStatus>;
 
 export function GetSecretStatus():Promise<main.SecretStatus>;
@@ -617,6 +655,8 @@ export function GetUltrabeamSettings():Promise<main.UltrabeamSettings>;
 
 export function GetUltrabeamStatus():Promise<main.UltrabeamStatusInfo>;
 
+export function GetWatchlistContestCalls():Promise<string>;
+
 export function GetWatchlistContestPattern():Promise<string>;
 
 export function GetWebPublishConfig():Promise<webpub.Config>;
@@ -635,18 +675,26 @@ export function GetWsjtFollowMode():Promise<boolean>;
 
 export function GetWsjtHighlight():Promise<boolean>;
 
+export function GetWsjtHighlightColours():Promise<main.WsjtHighlightColours>;
+
+export function GetWsjtHighlightWorked():Promise<boolean>;
+
 export function GetYaesuBandAntennas():Promise<Record<string, number>>;
 
 export function GetYaesuState():Promise<cat.YaesuTXState>;
 
 export function GridSquares(arg1:string):Promise<Array<qso.GridSquare>>;
 
+export function HaltAutoCall():Promise<void>;
+
 export function HaltDecodeTx(arg1:string,arg2:boolean):Promise<void>;
 
 export function HasBuiltinReferences(arg1:string):Promise<boolean>;
 
 export function IcomConsolePTT(arg1:boolean):Promise<void>;
 
+export function IcomRecallBand(arg1:string,arg2:number):Promise<number>;
+
 export function IcomRefresh():Promise<void>;
 
 export function IcomScopeData():Promise<cat.ScopeSweep>;
@@ -953,6 +1001,8 @@ export function RefreshDXpeditions():Promise<void>;
 
 export function RefreshKenwood():Promise<void>;
 
+export function RefreshSatelliteTLE():Promise<main.SatTLEInfo>;
+
 export function RefreshSolar():Promise<void>;
 
 export function RefreshYaesuPanel():Promise<void>;
@@ -977,6 +1027,8 @@ export function ReportLiveActivity(arg1:number,arg2:string,arg3:string):Promise<
 
 export function RescanAwards():Promise<void>;
 
+export function ResetAutoCall():Promise<void>;
+
 export function ResetAwardDefs():Promise<Array<award.Def>>;
 
 export function ResetDatabaseToDefault():Promise<void>;
@@ -1023,6 +1075,8 @@ export function SaveAntGeniusSettings(arg1:main.AntGeniusSettings):Promise<void>
 
 export function SaveAudioSettings(arg1:main.AudioSettings):Promise<void>;
 
+export function SaveAutoCallSettings(arg1:main.AutoCallSettings):Promise<void>;
+
 export function SaveAutostartPrograms(arg1:Array<main.AutostartProgram>):Promise<void>;
 
 export function SaveAwardDefs(arg1:Array<award.Def>):Promise<void>;
@@ -1073,6 +1127,8 @@ export function SavePGXLSettings(arg1:main.PGXLSettings):Promise<void>;
 
 export function SavePOTAToken(arg1:string):Promise<void>;
 
+export function SavePSKTargetSettings(arg1:main.PSKTargetSettings):Promise<void>;
+
 export function SavePSUSettings(arg1:main.PSUSettings):Promise<void>;
 
 export function SaveProfile(arg1:profile.Profile):Promise<profile.Profile>;
@@ -1089,6 +1145,8 @@ export function SaveRotorPresets(arg1:Array<main.RotorPreset>):Promise<void>;
 
 export function SaveRowColors(arg1:main.RowColorSettings):Promise<void>;
 
+export function SaveSatSettings(arg1:main.SatSettings):Promise<void>;
+
 export function SaveSelfSpotSettings(arg1:main.SelfSpotSettings):Promise<void>;
 
 export function SaveSpotColors(arg1:main.SpotColors):Promise<void>;
@@ -1133,6 +1191,12 @@ export function SetActiveRotor(arg1:number):Promise<void>;
 
 export function SetAlertEmailTo(arg1:string):Promise<void>;
 
+export function SetAutoCall(arg1:boolean):Promise<void>;
+
+export function SetAutoCallOnly(arg1:string):Promise<void>;
+
+export function SetAutoCallVisible(arg1:Array<string>,arg2:boolean):Promise<void>;
+
 export function SetCATFrequency(arg1:number):Promise<void>;
 
 export function SetCATMode(arg1:string):Promise<void>;
@@ -1143,6 +1207,8 @@ export function SetCWDecoderPitch(arg1:number):Promise<void>;
 
 export function SetChaseNew(arg1:boolean):Promise<void>;
 
+export function SetChaseNewBands(arg1:Array<string>):Promise<void>;
+
 export function SetChaseNewGrids(arg1:boolean):Promise<void>;
 
 export function SetClublogCtyEnabled(arg1:boolean):Promise<void>;
@@ -1205,6 +1271,8 @@ export function SetMotorFollow(arg1:boolean,arg2:number,arg3:string):Promise<voi
 
 export function SetOpsLogQSLReceived(arg1:number,arg2:boolean):Promise<void>;
 
+export function SetPSKTarget(arg1:string,arg2:string,arg3:number):Promise<void>;
+
 export function SetPSUOutput(arg1:boolean):Promise<void>;
 
 export function SetPassphrase(arg1:string):Promise<void>;
@@ -1261,6 +1329,8 @@ export function SetUIPref(arg1:string,arg2:string):Promise<void>;
 
 export function SetUltrabeamDirection(arg1:number):Promise<void>;
 
+export function SetWatchlistContestCalls(arg1:string):Promise<void>;
+
 export function SetWatchlistContestPattern(arg1:string):Promise<void>;
 
 export function SetWinkeyerTrace(arg1:boolean):Promise<void>;
@@ -1271,6 +1341,10 @@ export function SetWsjtFollowMode(arg1:boolean):Promise<void>;
 
 export function SetWsjtHighlight(arg1:boolean):Promise<void>;
 
+export function SetWsjtHighlightColours(arg1:main.WsjtHighlightColours):Promise<void>;
+
+export function SetWsjtHighlightWorked(arg1:boolean):Promise<void>;
+
 export function SetYaesuAFGain(arg1:number):Promise<void>;
 
 export function SetYaesuAGC(arg1:string):Promise<void>;
@@ -1313,10 +1387,14 @@ export function SetYaesuVOX(arg1:boolean):Promise<void>;
 
 export function StartCWDecoder():Promise<void>;
 
+export function StartSatelliteTracking(arg1:string,arg2:number):Promise<void>;
+
 export function StationSetRelay(arg1:string,arg2:number,arg3:boolean):Promise<void>;
 
 export function StopCWDecoder():Promise<void>;
 
+export function StopSatelliteTracking():Promise<void>;
+
 export function SwitchCATRig(arg1:number):Promise<void>;
 
 export function SyncFolderNow():Promise<number>;
@@ -1331,6 +1409,8 @@ export function TCIStopCW():Promise<void>;
 
 export function TailLogFile(arg1:number):Promise<string>;
 
+export function TakeAutoCallTarget(arg1:string,arg2:string,arg3:string):Promise<void>;
+
 export function TestCloudlogUpload():Promise<string>;
 
 export function TestClublogUpload():Promise<string>;
@@ -1355,6 +1435,8 @@ export function TestQRZUpload():Promise<string>;
 
 export function TestRotatorDevice(arg1:main.RotatorDevice,arg2:number):Promise<void>;
 
+export function TestSatelliteRotator():Promise<string>;
+
 export function TestStationDevice(arg1:main.StationDevice):Promise<main.StationTestResult>;
 
 export function TestUltrabeam(arg1:main.UltrabeamSettings):Promise<void>;

frontend/wailsjs/go/main/App.js

@@ -38,6 +38,10 @@ export function AddQSO(arg1) {
   return window['go']['main']['App']['AddQSO'](arg1);
 }
 
+export function AddSatelliteElements(arg1) {
+  return window['go']['main']['App']['AddSatelliteElements'](arg1);
+}
+
 export function AmpFanMode(arg1, arg2) {
   return window['go']['main']['App']['AmpFanMode'](arg1, arg2);
 }
@@ -766,6 +770,14 @@ export function GetAudioSettings() {
   return window['go']['main']['App']['GetAudioSettings']();
 }
 
+export function GetAutoCallSettings() {
+  return window['go']['main']['App']['GetAutoCallSettings']();
+}
+
+export function GetAutoCallStatus() {
+  return window['go']['main']['App']['GetAutoCallStatus']();
+}
+
 export function GetAutostartPrograms() {
   return window['go']['main']['App']['GetAutostartPrograms']();
 }
@@ -834,6 +846,10 @@ export function GetChaseNew() {
   return window['go']['main']['App']['GetChaseNew']();
 }
 
+export function GetChaseNewBands() {
+  return window['go']['main']['App']['GetChaseNewBands']();
+}
+
 export function GetChaseNewGrids() {
   return window['go']['main']['App']['GetChaseNewGrids']();
 }
@@ -1034,10 +1050,18 @@ export function GetPOTAToken() {
   return window['go']['main']['App']['GetPOTAToken']();
 }
 
+export function GetPSKAnalysis() {
+  return window['go']['main']['App']['GetPSKAnalysis']();
+}
+
 export function GetPSKReporterStatus() {
   return window['go']['main']['App']['GetPSKReporterStatus']();
 }
 
+export function GetPSKTargetSettings() {
+  return window['go']['main']['App']['GetPSKTargetSettings']();
+}
+
 export function GetPSUSettings() {
   return window['go']['main']['App']['GetPSUSettings']();
 }
@@ -1090,6 +1114,54 @@ export function GetSPEStatus() {
   return window['go']['main']['App']['GetSPEStatus']();
 }
 
+export function GetSatSettings() {
+  return window['go']['main']['App']['GetSatSettings']();
+}
+
+export function GetSatelliteBirds() {
+  return window['go']['main']['App']['GetSatelliteBirds']();
+}
+
+export function GetSatelliteGroundTrack(arg1, arg2) {
+  return window['go']['main']['App']['GetSatelliteGroundTrack'](arg1, arg2);
+}
+
+export function GetSatelliteNames() {
+  return window['go']['main']['App']['GetSatelliteNames']();
+}
+
+export function GetSatelliteNextPass(arg1) {
+  return window['go']['main']['App']['GetSatelliteNextPass'](arg1);
+}
+
+export function GetSatelliteObserver() {
+  return window['go']['main']['App']['GetSatelliteObserver']();
+}
+
+export function GetSatellitePasses(arg1, arg2) {
+  return window['go']['main']['App']['GetSatellitePasses'](arg1, arg2);
+}
+
+export function GetSatellitePositions(arg1) {
+  return window['go']['main']['App']['GetSatellitePositions'](arg1);
+}
+
+export function GetSatelliteSkyTrack(arg1, arg2) {
+  return window['go']['main']['App']['GetSatelliteSkyTrack'](arg1, arg2);
+}
+
+export function GetSatelliteTLEInfo() {
+  return window['go']['main']['App']['GetSatelliteTLEInfo']();
+}
+
+export function GetSatelliteTracking() {
+  return window['go']['main']['App']['GetSatelliteTracking']();
+}
+
+export function GetSatelliteTuning(arg1, arg2, arg3) {
+  return window['go']['main']['App']['GetSatelliteTuning'](arg1, arg2, arg3);
+}
+
 export function GetScpStatus() {
   return window['go']['main']['App']['GetScpStatus']();
 }
@@ -1170,6 +1242,10 @@ export function GetUltrabeamStatus() {
   return window['go']['main']['App']['GetUltrabeamStatus']();
 }
 
+export function GetWatchlistContestCalls() {
+  return window['go']['main']['App']['GetWatchlistContestCalls']();
+}
+
 export function GetWatchlistContestPattern() {
   return window['go']['main']['App']['GetWatchlistContestPattern']();
 }
@@ -1206,6 +1282,14 @@ export function GetWsjtHighlight() {
   return window['go']['main']['App']['GetWsjtHighlight']();
 }
 
+export function GetWsjtHighlightColours() {
+  return window['go']['main']['App']['GetWsjtHighlightColours']();
+}
+
+export function GetWsjtHighlightWorked() {
+  return window['go']['main']['App']['GetWsjtHighlightWorked']();
+}
+
 export function GetYaesuBandAntennas() {
   return window['go']['main']['App']['GetYaesuBandAntennas']();
 }
@@ -1218,6 +1302,10 @@ export function GridSquares(arg1) {
   return window['go']['main']['App']['GridSquares'](arg1);
 }
 
+export function HaltAutoCall() {
+  return window['go']['main']['App']['HaltAutoCall']();
+}
+
 export function HaltDecodeTx(arg1, arg2) {
   return window['go']['main']['App']['HaltDecodeTx'](arg1, arg2);
 }
@@ -1230,6 +1318,10 @@ export function IcomConsolePTT(arg1) {
   return window['go']['main']['App']['IcomConsolePTT'](arg1);
 }
 
+export function IcomRecallBand(arg1, arg2) {
+  return window['go']['main']['App']['IcomRecallBand'](arg1, arg2);
+}
+
 export function IcomRefresh() {
   return window['go']['main']['App']['IcomRefresh']();
 }
@@ -1842,6 +1934,10 @@ export function RefreshKenwood() {
   return window['go']['main']['App']['RefreshKenwood']();
 }
 
+export function RefreshSatelliteTLE() {
+  return window['go']['main']['App']['RefreshSatelliteTLE']();
+}
+
 export function RefreshSolar() {
   return window['go']['main']['App']['RefreshSolar']();
 }
@@ -1890,6 +1986,10 @@ export function RescanAwards() {
   return window['go']['main']['App']['RescanAwards']();
 }
 
+export function ResetAutoCall() {
+  return window['go']['main']['App']['ResetAutoCall']();
+}
+
 export function ResetAwardDefs() {
   return window['go']['main']['App']['ResetAwardDefs']();
 }
@@ -1982,6 +2082,10 @@ export function SaveAudioSettings(arg1) {
   return window['go']['main']['App']['SaveAudioSettings'](arg1);
 }
 
+export function SaveAutoCallSettings(arg1) {
+  return window['go']['main']['App']['SaveAutoCallSettings'](arg1);
+}
+
 export function SaveAutostartPrograms(arg1) {
   return window['go']['main']['App']['SaveAutostartPrograms'](arg1);
 }
@@ -2082,6 +2186,10 @@ export function SavePOTAToken(arg1) {
   return window['go']['main']['App']['SavePOTAToken'](arg1);
 }
 
+export function SavePSKTargetSettings(arg1) {
+  return window['go']['main']['App']['SavePSKTargetSettings'](arg1);
+}
+
 export function SavePSUSettings(arg1) {
   return window['go']['main']['App']['SavePSUSettings'](arg1);
 }
@@ -2114,6 +2222,10 @@ export function SaveRowColors(arg1) {
   return window['go']['main']['App']['SaveRowColors'](arg1);
 }
 
+export function SaveSatSettings(arg1) {
+  return window['go']['main']['App']['SaveSatSettings'](arg1);
+}
+
 export function SaveSelfSpotSettings(arg1) {
   return window['go']['main']['App']['SaveSelfSpotSettings'](arg1);
 }
@@ -2202,6 +2314,18 @@ export function SetAlertEmailTo(arg1) {
   return window['go']['main']['App']['SetAlertEmailTo'](arg1);
 }
 
+export function SetAutoCall(arg1) {
+  return window['go']['main']['App']['SetAutoCall'](arg1);
+}
+
+export function SetAutoCallOnly(arg1) {
+  return window['go']['main']['App']['SetAutoCallOnly'](arg1);
+}
+
+export function SetAutoCallVisible(arg1, arg2) {
+  return window['go']['main']['App']['SetAutoCallVisible'](arg1, arg2);
+}
+
 export function SetCATFrequency(arg1) {
   return window['go']['main']['App']['SetCATFrequency'](arg1);
 }
@@ -2222,6 +2346,10 @@ export function SetChaseNew(arg1) {
   return window['go']['main']['App']['SetChaseNew'](arg1);
 }
 
+export function SetChaseNewBands(arg1) {
+  return window['go']['main']['App']['SetChaseNewBands'](arg1);
+}
+
 export function SetChaseNewGrids(arg1) {
   return window['go']['main']['App']['SetChaseNewGrids'](arg1);
 }
@@ -2346,6 +2474,10 @@ export function SetOpsLogQSLReceived(arg1, arg2) {
   return window['go']['main']['App']['SetOpsLogQSLReceived'](arg1, arg2);
 }
 
+export function SetPSKTarget(arg1, arg2, arg3) {
+  return window['go']['main']['App']['SetPSKTarget'](arg1, arg2, arg3);
+}
+
 export function SetPSUOutput(arg1) {
   return window['go']['main']['App']['SetPSUOutput'](arg1);
 }
@@ -2458,6 +2590,10 @@ export function SetUltrabeamDirection(arg1) {
   return window['go']['main']['App']['SetUltrabeamDirection'](arg1);
 }
 
+export function SetWatchlistContestCalls(arg1) {
+  return window['go']['main']['App']['SetWatchlistContestCalls'](arg1);
+}
+
 export function SetWatchlistContestPattern(arg1) {
   return window['go']['main']['App']['SetWatchlistContestPattern'](arg1);
 }
@@ -2478,6 +2614,14 @@ export function SetWsjtHighlight(arg1) {
   return window['go']['main']['App']['SetWsjtHighlight'](arg1);
 }
 
+export function SetWsjtHighlightColours(arg1) {
+  return window['go']['main']['App']['SetWsjtHighlightColours'](arg1);
+}
+
+export function SetWsjtHighlightWorked(arg1) {
+  return window['go']['main']['App']['SetWsjtHighlightWorked'](arg1);
+}
+
 export function SetYaesuAFGain(arg1) {
   return window['go']['main']['App']['SetYaesuAFGain'](arg1);
 }
@@ -2562,6 +2706,10 @@ export function StartCWDecoder() {
   return window['go']['main']['App']['StartCWDecoder']();
 }
 
+export function StartSatelliteTracking(arg1, arg2) {
+  return window['go']['main']['App']['StartSatelliteTracking'](arg1, arg2);
+}
+
 export function StationSetRelay(arg1, arg2, arg3) {
   return window['go']['main']['App']['StationSetRelay'](arg1, arg2, arg3);
 }
@@ -2570,6 +2718,10 @@ export function StopCWDecoder() {
   return window['go']['main']['App']['StopCWDecoder']();
 }
 
+export function StopSatelliteTracking() {
+  return window['go']['main']['App']['StopSatelliteTracking']();
+}
+
 export function SwitchCATRig(arg1) {
   return window['go']['main']['App']['SwitchCATRig'](arg1);
 }
@@ -2598,6 +2750,10 @@ export function TailLogFile(arg1) {
   return window['go']['main']['App']['TailLogFile'](arg1);
 }
 
+export function TakeAutoCallTarget(arg1, arg2, arg3) {
+  return window['go']['main']['App']['TakeAutoCallTarget'](arg1, arg2, arg3);
+}
+
 export function TestCloudlogUpload() {
   return window['go']['main']['App']['TestCloudlogUpload']();
 }
@@ -2646,6 +2802,10 @@ export function TestRotatorDevice(arg1, arg2) {
   return window['go']['main']['App']['TestRotatorDevice'](arg1, arg2);
 }
 
+export function TestSatelliteRotator() {
+  return window['go']['main']['App']['TestSatelliteRotator']();
+}
+
 export function TestStationDevice(arg1) {
   return window['go']['main']['App']['TestStationDevice'](arg1);
 }

frontend/wailsjs/go/models.ts

@@ -1924,6 +1924,7 @@ export namespace main {
 	    preroll_seconds: number;
 	    ptt_method: string;
 	    ptt_port: string;
+	    ptt_data: boolean;
 	    format: string;
 	    from_gain: number;
 	    mic_gain: number;
@@ -1945,6 +1946,7 @@ export namespace main {
 	        this.preroll_seconds = source["preroll_seconds"];
 	        this.ptt_method = source["ptt_method"];
 	        this.ptt_port = source["ptt_port"];
+	        this.ptt_data = source["ptt_data"];
 	        this.format = source["format"];
 	        this.from_gain = source["from_gain"];
 	        this.mic_gain = source["mic_gain"];
@@ -1952,6 +1954,66 @@ export namespace main {
 	        this.qso_play_gain = source["qso_play_gain"];
 	    }
 	}
+	export class AutoCallSettings {
+	    enabled: boolean;
+	    only: string;
+	    attempts: number;
+	    watched_attempts: number;
+	    misses: number;
+	    max_rounds: number;
+	    rest_periods: number;
+	    on_screen_only: boolean;
+	    trace: boolean;
+	
+	    static createFrom(source: any = {}) {
+	        return new AutoCallSettings(source);
+	    }
+	
+	    constructor(source: any = {}) {
+	        if ('string' === typeof source) source = JSON.parse(source);
+	        this.enabled = source["enabled"];
+	        this.only = source["only"];
+	        this.attempts = source["attempts"];
+	        this.watched_attempts = source["watched_attempts"];
+	        this.misses = source["misses"];
+	        this.max_rounds = source["max_rounds"];
+	        this.rest_periods = source["rest_periods"];
+	        this.on_screen_only = source["on_screen_only"];
+	        this.trace = source["trace"];
+	    }
+	}
+	export class AutoCallStatus {
+	    enabled: boolean;
+	    only: string;
+	    target: string;
+	    waiting: string;
+	    calls: number;
+	    max: number;
+	    misses: number;
+	    max_miss: number;
+	    stopped: boolean;
+	    greylisted: number;
+	    reason: string;
+	
+	    static createFrom(source: any = {}) {
+	        return new AutoCallStatus(source);
+	    }
+	
+	    constructor(source: any = {}) {
+	        if ('string' === typeof source) source = JSON.parse(source);
+	        this.enabled = source["enabled"];
+	        this.only = source["only"];
+	        this.target = source["target"];
+	        this.waiting = source["waiting"];
+	        this.calls = source["calls"];
+	        this.max = source["max"];
+	        this.misses = source["misses"];
+	        this.max_miss = source["max_miss"];
+	        this.stopped = source["stopped"];
+	        this.greylisted = source["greylisted"];
+	        this.reason = source["reason"];
+	    }
+	}
 	export class AutostartLaunchResult {
 	    id: string;
 	    name: string;
@@ -2317,6 +2379,7 @@ export namespace main {
 	    kenwood_baud: number;
 	    kenwood_data_mode: string;
 	    yaesu_low_lines: boolean;
+	    yaesu_rtty_usb: boolean;
 	    kenwood_low_lines: boolean;
 	    icom_port: string;
 	    icom_baud: number;
@@ -2370,6 +2433,7 @@ export namespace main {
 	        this.kenwood_baud = source["kenwood_baud"];
 	        this.kenwood_data_mode = source["kenwood_data_mode"];
 	        this.yaesu_low_lines = source["yaesu_low_lines"];
+	        this.yaesu_rtty_usb = source["yaesu_rtty_usb"];
 	        this.kenwood_low_lines = source["kenwood_low_lines"];
 	        this.icom_port = source["icom_port"];
 	        this.icom_baud = source["icom_baud"];
@@ -3315,6 +3379,20 @@ export namespace main {
 		}
 	}
 	
+	export class PSKTargetSettings {
+	    enabled: boolean;
+	    scope: string;
+	
+	    static createFrom(source: any = {}) {
+	        return new PSKTargetSettings(source);
+	    }
+	
+	    constructor(source: any = {}) {
+	        if ('string' === typeof source) source = JSON.parse(source);
+	        this.enabled = source["enabled"];
+	        this.scope = source["scope"];
+	    }
+	}
 	export class PSUSettings {
 	    enabled: boolean;
 	    com_port: string;
@@ -3925,6 +4003,363 @@ export namespace main {
 		    return a;
 		}
 	}
+	export class SatTransponder {
+	    label: string;
+	    mode: string;
+	    down_lo: number;
+	    down_hi: number;
+	    up_lo: number;
+	    up_hi: number;
+	    inverting: boolean;
+	    ctcss: number;
+	    linear: boolean;
+	
+	    static createFrom(source: any = {}) {
+	        return new SatTransponder(source);
+	    }
+	
+	    constructor(source: any = {}) {
+	        if ('string' === typeof source) source = JSON.parse(source);
+	        this.label = source["label"];
+	        this.mode = source["mode"];
+	        this.down_lo = source["down_lo"];
+	        this.down_hi = source["down_hi"];
+	        this.up_lo = source["up_lo"];
+	        this.up_hi = source["up_hi"];
+	        this.inverting = source["inverting"];
+	        this.ctcss = source["ctcss"];
+	        this.linear = source["linear"];
+	    }
+	}
+	export class SatBird {
+	    name: string;
+	    norad: number;
+	    geostationary: boolean;
+	    favorite: boolean;
+	    has_elements: boolean;
+	    element_name: string;
+	    epoch_age_h: number;
+	    transponders: SatTransponder[];
+	
+	    static createFrom(source: any = {}) {
+	        return new SatBird(source);
+	    }
+	
+	    constructor(source: any = {}) {
+	        if ('string' === typeof source) source = JSON.parse(source);
+	        this.name = source["name"];
+	        this.norad = source["norad"];
+	        this.geostationary = source["geostationary"];
+	        this.favorite = source["favorite"];
+	        this.has_elements = source["has_elements"];
+	        this.element_name = source["element_name"];
+	        this.epoch_age_h = source["epoch_age_h"];
+	        this.transponders = this.convertValues(source["transponders"], SatTransponder);
+	    }
+	
+		convertValues(a: any, classs: any, asMap: boolean = false): any {
+		    if (!a) {
+		        return a;
+		    }
+		    if (a.slice && a.map) {
+		        return (a as any[]).map(elem => this.convertValues(elem, classs));
+		    } else if ("object" === typeof a) {
+		        if (asMap) {
+		            for (const key of Object.keys(a)) {
+		                a[key] = new classs(a[key]);
+		            }
+		            return a;
+		        }
+		        return new classs(a);
+		    }
+		    return a;
+		}
+	}
+	export class SatPassInfo {
+	    name: string;
+	    has_pass: boolean;
+	    in_pass: boolean;
+	    // Go type: time
+	    aos: any;
+	    // Go type: time
+	    los: any;
+	    aos_az: number;
+	    los_az: number;
+	    max_el: number;
+	    max_el_az: number;
+	    // Go type: time
+	    max_el_at: any;
+	    duration_s: number;
+	
+	    static createFrom(source: any = {}) {
+	        return new SatPassInfo(source);
+	    }
+	
+	    constructor(source: any = {}) {
+	        if ('string' === typeof source) source = JSON.parse(source);
+	        this.name = source["name"];
+	        this.has_pass = source["has_pass"];
+	        this.in_pass = source["in_pass"];
+	        this.aos = this.convertValues(source["aos"], null);
+	        this.los = this.convertValues(source["los"], null);
+	        this.aos_az = source["aos_az"];
+	        this.los_az = source["los_az"];
+	        this.max_el = source["max_el"];
+	        this.max_el_az = source["max_el_az"];
+	        this.max_el_at = this.convertValues(source["max_el_at"], null);
+	        this.duration_s = source["duration_s"];
+	    }
+	
+		convertValues(a: any, classs: any, asMap: boolean = false): any {
+		    if (!a) {
+		        return a;
+		    }
+		    if (a.slice && a.map) {
+		        return (a as any[]).map(elem => this.convertValues(elem, classs));
+		    } else if ("object" === typeof a) {
+		        if (asMap) {
+		            for (const key of Object.keys(a)) {
+		                a[key] = new classs(a[key]);
+		            }
+		            return a;
+		        }
+		        return new classs(a);
+		    }
+		    return a;
+		}
+	}
+	export class SatSettings {
+	    favorites: string[];
+	    min_el: number;
+	    window_h: number;
+	    auto_tle: boolean;
+	    grid: string;
+	    alt_m: number;
+	    rot_on: boolean;
+	    rot_type: string;
+	    rot_pst_port: number;
+	    rot_transport: string;
+	    rot_host: string;
+	    rot_port: number;
+	    rot_com: string;
+	    rot_baud: number;
+	    rot_max_az: number;
+	    rot_min_el: number;
+	    rot_step: number;
+	    rot_park: boolean;
+	
+	    static createFrom(source: any = {}) {
+	        return new SatSettings(source);
+	    }
+	
+	    constructor(source: any = {}) {
+	        if ('string' === typeof source) source = JSON.parse(source);
+	        this.favorites = source["favorites"];
+	        this.min_el = source["min_el"];
+	        this.window_h = source["window_h"];
+	        this.auto_tle = source["auto_tle"];
+	        this.grid = source["grid"];
+	        this.alt_m = source["alt_m"];
+	        this.rot_on = source["rot_on"];
+	        this.rot_type = source["rot_type"];
+	        this.rot_pst_port = source["rot_pst_port"];
+	        this.rot_transport = source["rot_transport"];
+	        this.rot_host = source["rot_host"];
+	        this.rot_port = source["rot_port"];
+	        this.rot_com = source["rot_com"];
+	        this.rot_baud = source["rot_baud"];
+	        this.rot_max_az = source["rot_max_az"];
+	        this.rot_min_el = source["rot_min_el"];
+	        this.rot_step = source["rot_step"];
+	        this.rot_park = source["rot_park"];
+	    }
+	}
+	export class SatSkyPoint {
+	    // Go type: time
+	    at: any;
+	    az: number;
+	    el: number;
+	
+	    static createFrom(source: any = {}) {
+	        return new SatSkyPoint(source);
+	    }
+	
+	    constructor(source: any = {}) {
+	        if ('string' === typeof source) source = JSON.parse(source);
+	        this.at = this.convertValues(source["at"], null);
+	        this.az = source["az"];
+	        this.el = source["el"];
+	    }
+	
+		convertValues(a: any, classs: any, asMap: boolean = false): any {
+		    if (!a) {
+		        return a;
+		    }
+		    if (a.slice && a.map) {
+		        return (a as any[]).map(elem => this.convertValues(elem, classs));
+		    } else if ("object" === typeof a) {
+		        if (asMap) {
+		            for (const key of Object.keys(a)) {
+		                a[key] = new classs(a[key]);
+		            }
+		            return a;
+		        }
+		        return new classs(a);
+		    }
+		    return a;
+		}
+	}
+	export class SatTLEInfo {
+	    count: number;
+	    // Go type: time
+	    fetched_at: any;
+	    age_h: number;
+	    stale: boolean;
+	    custom: number;
+	
+	    static createFrom(source: any = {}) {
+	        return new SatTLEInfo(source);
+	    }
+	
+	    constructor(source: any = {}) {
+	        if ('string' === typeof source) source = JSON.parse(source);
+	        this.count = source["count"];
+	        this.fetched_at = this.convertValues(source["fetched_at"], null);
+	        this.age_h = source["age_h"];
+	        this.stale = source["stale"];
+	        this.custom = source["custom"];
+	    }
+	
+		convertValues(a: any, classs: any, asMap: boolean = false): any {
+		    if (!a) {
+		        return a;
+		    }
+		    if (a.slice && a.map) {
+		        return (a as any[]).map(elem => this.convertValues(elem, classs));
+		    } else if ("object" === typeof a) {
+		        if (asMap) {
+		            for (const key of Object.keys(a)) {
+		                a[key] = new classs(a[key]);
+		            }
+		            return a;
+		        }
+		        return new classs(a);
+		    }
+		    return a;
+		}
+	}
+	export class SatTrackStatus {
+	    on: boolean;
+	    name: string;
+	    transponder: string;
+	    mode: string;
+	    nominal_down: number;
+	    nominal_up: number;
+	    down_hz: number;
+	    up_hz: number;
+	    az: number;
+	    el: number;
+	    visible: boolean;
+	    radio: string;
+	    error: string;
+	    rot_on: boolean;
+	    rot_az: number;
+	    rot_el: number;
+	    rot_live: boolean;
+	
+	    static createFrom(source: any = {}) {
+	        return new SatTrackStatus(source);
+	    }
+	
+	    constructor(source: any = {}) {
+	        if ('string' === typeof source) source = JSON.parse(source);
+	        this.on = source["on"];
+	        this.name = source["name"];
+	        this.transponder = source["transponder"];
+	        this.mode = source["mode"];
+	        this.nominal_down = source["nominal_down"];
+	        this.nominal_up = source["nominal_up"];
+	        this.down_hz = source["down_hz"];
+	        this.up_hz = source["up_hz"];
+	        this.az = source["az"];
+	        this.el = source["el"];
+	        this.visible = source["visible"];
+	        this.radio = source["radio"];
+	        this.error = source["error"];
+	        this.rot_on = source["rot_on"];
+	        this.rot_az = source["rot_az"];
+	        this.rot_el = source["rot_el"];
+	        this.rot_live = source["rot_live"];
+	    }
+	}
+	
+	export class SatTuning {
+	    name: string;
+	    transponder: string;
+	    mode: string;
+	    nominal_down: number;
+	    nominal_up: number;
+	    down_hz: number;
+	    up_hz: number;
+	    ctcss: number;
+	    inverting: boolean;
+	    az: number;
+	    el: number;
+	    range_km: number;
+	    range_rate: number;
+	    visible: boolean;
+	    // Go type: time
+	    at: any;
+	    lat: number;
+	    lon: number;
+	    alt_km: number;
+	    footprint_km: number;
+	
+	    static createFrom(source: any = {}) {
+	        return new SatTuning(source);
+	    }
+	
+	    constructor(source: any = {}) {
+	        if ('string' === typeof source) source = JSON.parse(source);
+	        this.name = source["name"];
+	        this.transponder = source["transponder"];
+	        this.mode = source["mode"];
+	        this.nominal_down = source["nominal_down"];
+	        this.nominal_up = source["nominal_up"];
+	        this.down_hz = source["down_hz"];
+	        this.up_hz = source["up_hz"];
+	        this.ctcss = source["ctcss"];
+	        this.inverting = source["inverting"];
+	        this.az = source["az"];
+	        this.el = source["el"];
+	        this.range_km = source["range_km"];
+	        this.range_rate = source["range_rate"];
+	        this.visible = source["visible"];
+	        this.at = this.convertValues(source["at"], null);
+	        this.lat = source["lat"];
+	        this.lon = source["lon"];
+	        this.alt_km = source["alt_km"];
+	        this.footprint_km = source["footprint_km"];
+	    }
+	
+		convertValues(a: any, classs: any, asMap: boolean = false): any {
+		    if (!a) {
+		        return a;
+		    }
+		    if (a.slice && a.map) {
+		        return (a as any[]).map(elem => this.convertValues(elem, classs));
+		    } else if ("object" === typeof a) {
+		        if (asMap) {
+		            for (const key of Object.keys(a)) {
+		                a[key] = new classs(a[key]);
+		            }
+		            return a;
+		        }
+		        return new classs(a);
+		    }
+		    return a;
+		}
+	}
 	export class ScpStatus {
 	    enabled: boolean;
 	    count: number;
@@ -4516,6 +4951,24 @@ export namespace main {
 		    return a;
 		}
 	}
+	export class WsjtHighlightColours {
+	    watchlist: string;
+	    new_dxcc: string;
+	    new_band: string;
+	    worked: string;
+	
+	    static createFrom(source: any = {}) {
+	        return new WsjtHighlightColours(source);
+	    }
+	
+	    constructor(source: any = {}) {
+	        if ('string' === typeof source) source = JSON.parse(source);
+	        this.watchlist = source["watchlist"];
+	        this.new_dxcc = source["new_dxcc"];
+	        this.new_band = source["new_band"];
+	        this.worked = source["worked"];
+	    }
+	}
 
 }
 
@@ -4894,6 +5347,8 @@ export namespace pskr {
 	    last_err?: string;
 	    broker: string;
 	    bands: string[];
+	    near_km: number;
+	    squares: number;
 	
 	    static createFrom(source: any = {}) {
 	        return new Status(source);
@@ -4907,6 +5362,8 @@ export namespace pskr {
 	        this.last_err = source["last_err"];
 	        this.broker = source["broker"];
 	        this.bands = source["bands"];
+	        this.near_km = source["near_km"];
+	        this.squares = source["squares"];
 	    }
 	
 		convertValues(a: any, classs: any, asMap: boolean = false): any {
@@ -4930,6 +5387,132 @@ export namespace pskr {
 
 }
 
+export namespace pskrtgt {
+	
+	export class Bin {
+	    offset_hz: number;
+	    count: number;
+	    avg_snr: number;
+	
+	    static createFrom(source: any = {}) {
+	        return new Bin(source);
+	    }
+	
+	    constructor(source: any = {}) {
+	        if ('string' === typeof source) source = JSON.parse(source);
+	        this.offset_hz = source["offset_hz"];
+	        this.count = source["count"];
+	        this.avg_snr = source["avg_snr"];
+	    }
+	}
+	export class Entry {
+	    call: string;
+	    grid: string;
+	    snr: number;
+	    offset_hz: number;
+	    age_sec: number;
+	
+	    static createFrom(source: any = {}) {
+	        return new Entry(source);
+	    }
+	
+	    constructor(source: any = {}) {
+	        if ('string' === typeof source) source = JSON.parse(source);
+	        this.call = source["call"];
+	        this.grid = source["grid"];
+	        this.snr = source["snr"];
+	        this.offset_hz = source["offset_hz"];
+	        this.age_sec = source["age_sec"];
+	    }
+	}
+	export class Analysis {
+	    target: string;
+	    mode?: string;
+	    enabled: boolean;
+	    online: boolean;
+	    spots: number;
+	    he_me: boolean;
+	    he_me_seconds: number;
+	    he_me_snr: number;
+	    he_me_offset_hz: number;
+	    target_uploads: boolean;
+	    target_grid?: string;
+	    near_him_count: number;
+	    near_him_top: Entry[];
+	    from_my_area_count: number;
+	    from_my_area_top: Entry[];
+	    path_open: boolean;
+	    heard_by_count: number;
+	    heard_near_me: number;
+	    heard_near_me_top: Entry[];
+	    decoded_by_count: number;
+	    decoded_by_top: Entry[];
+	    decoded_by_calls: string[];
+	    pileup_count: number;
+	    dial_hz: number;
+	    ceiling_hz: number;
+	    decodes_in_window: number;
+	    bins: Bin[];
+	    suggested_offset: number;
+	
+	    static createFrom(source: any = {}) {
+	        return new Analysis(source);
+	    }
+	
+	    constructor(source: any = {}) {
+	        if ('string' === typeof source) source = JSON.parse(source);
+	        this.target = source["target"];
+	        this.mode = source["mode"];
+	        this.enabled = source["enabled"];
+	        this.online = source["online"];
+	        this.spots = source["spots"];
+	        this.he_me = source["he_me"];
+	        this.he_me_seconds = source["he_me_seconds"];
+	        this.he_me_snr = source["he_me_snr"];
+	        this.he_me_offset_hz = source["he_me_offset_hz"];
+	        this.target_uploads = source["target_uploads"];
+	        this.target_grid = source["target_grid"];
+	        this.near_him_count = source["near_him_count"];
+	        this.near_him_top = this.convertValues(source["near_him_top"], Entry);
+	        this.from_my_area_count = source["from_my_area_count"];
+	        this.from_my_area_top = this.convertValues(source["from_my_area_top"], Entry);
+	        this.path_open = source["path_open"];
+	        this.heard_by_count = source["heard_by_count"];
+	        this.heard_near_me = source["heard_near_me"];
+	        this.heard_near_me_top = this.convertValues(source["heard_near_me_top"], Entry);
+	        this.decoded_by_count = source["decoded_by_count"];
+	        this.decoded_by_top = this.convertValues(source["decoded_by_top"], Entry);
+	        this.decoded_by_calls = source["decoded_by_calls"];
+	        this.pileup_count = source["pileup_count"];
+	        this.dial_hz = source["dial_hz"];
+	        this.ceiling_hz = source["ceiling_hz"];
+	        this.decodes_in_window = source["decodes_in_window"];
+	        this.bins = this.convertValues(source["bins"], Bin);
+	        this.suggested_offset = source["suggested_offset"];
+	    }
+	
+		convertValues(a: any, classs: any, asMap: boolean = false): any {
+		    if (!a) {
+		        return a;
+		    }
+		    if (a.slice && a.map) {
+		        return (a as any[]).map(elem => this.convertValues(elem, classs));
+		    } else if ("object" === typeof a) {
+		        if (asMap) {
+		            for (const key of Object.keys(a)) {
+		                a[key] = new classs(a[key]);
+		            }
+		            return a;
+		        }
+		        return new classs(a);
+		    }
+		    return a;
+		}
+	}
+	
+
+}
+
 export namespace psu {
 	
 	export class Status {
@@ -5847,6 +6430,109 @@ export namespace qso {
 
 }
 
+export namespace sat {
+	
+	export class Pass {
+	    name: string;
+	    // Go type: time
+	    aos: any;
+	    // Go type: time
+	    los: any;
+	    aos_az: number;
+	    los_az: number;
+	    max_el: number;
+	    max_el_az: number;
+	    // Go type: time
+	    max_el_at: any;
+	    duration_s: number;
+	
+	    static createFrom(source: any = {}) {
+	        return new Pass(source);
+	    }
+	
+	    constructor(source: any = {}) {
+	        if ('string' === typeof source) source = JSON.parse(source);
+	        this.name = source["name"];
+	        this.aos = this.convertValues(source["aos"], null);
+	        this.los = this.convertValues(source["los"], null);
+	        this.aos_az = source["aos_az"];
+	        this.los_az = source["los_az"];
+	        this.max_el = source["max_el"];
+	        this.max_el_az = source["max_el_az"];
+	        this.max_el_at = this.convertValues(source["max_el_at"], null);
+	        this.duration_s = source["duration_s"];
+	    }
+	
+		convertValues(a: any, classs: any, asMap: boolean = false): any {
+		    if (!a) {
+		        return a;
+		    }
+		    if (a.slice && a.map) {
+		        return (a as any[]).map(elem => this.convertValues(elem, classs));
+		    } else if ("object" === typeof a) {
+		        if (asMap) {
+		            for (const key of Object.keys(a)) {
+		                a[key] = new classs(a[key]);
+		            }
+		            return a;
+		        }
+		        return new classs(a);
+		    }
+		    return a;
+		}
+	}
+	export class Position {
+	    name: string;
+	    // Go type: time
+	    at: any;
+	    lat: number;
+	    lon: number;
+	    alt_km: number;
+	    footprint_km: number;
+	    az: number;
+	    el: number;
+	    range_km: number;
+	    range_rate: number;
+	
+	    static createFrom(source: any = {}) {
+	        return new Position(source);
+	    }
+	
+	    constructor(source: any = {}) {
+	        if ('string' === typeof source) source = JSON.parse(source);
+	        this.name = source["name"];
+	        this.at = this.convertValues(source["at"], null);
+	        this.lat = source["lat"];
+	        this.lon = source["lon"];
+	        this.alt_km = source["alt_km"];
+	        this.footprint_km = source["footprint_km"];
+	        this.az = source["az"];
+	        this.el = source["el"];
+	        this.range_km = source["range_km"];
+	        this.range_rate = source["range_rate"];
+	    }
+	
+		convertValues(a: any, classs: any, asMap: boolean = false): any {
+		    if (!a) {
+		        return a;
+		    }
+		    if (a.slice && a.map) {
+		        return (a as any[]).map(elem => this.convertValues(elem, classs));
+		    } else if ("object" === typeof a) {
+		        if (asMap) {
+		            for (const key of Object.keys(a)) {
+		                a[key] = new classs(a[key]);
+		            }
+		            return a;
+		        }
+		        return new classs(a);
+		    }
+		    return a;
+		}
+	}
+
+}
+
 export namespace scp {
 	
 	export class Result {

go.mod

@@ -3,6 +3,7 @@ module hamlog
 go 1.25.0
 
 require (
+	github.com/akhenakh/sgp4 v0.0.0-20260314155803-8ee03fc877eb
 	github.com/braheezy/shine-mp3 v0.1.0
 	github.com/eclipse/paho.mqtt.golang v1.5.1
 	github.com/go-ole/go-ole v1.3.0

go.sum

@@ -1,5 +1,7 @@
 filippo.io/edwards25519 v1.2.0 h1:crnVqOiS4jqYleHd9vaKZ+HKtHfllngJIiOpNpoJsjo=
 filippo.io/edwards25519 v1.2.0/go.mod h1:xzAOLCNug/yB62zG1bQ8uziwrIqIuxhctzJT18Q77mc=
+github.com/akhenakh/sgp4 v0.0.0-20260314155803-8ee03fc877eb h1:d9tZ7tJrssgs7Va9j8iu9vl7BlK2rmIs5RiOU7WQJrs=
+github.com/akhenakh/sgp4 v0.0.0-20260314155803-8ee03fc877eb/go.mod h1:JfAepWD223Cel6uRpzYdip/xijWZ2FT457YFLWy8Md4=
 github.com/bep/debounce v1.2.1 h1:v67fRdBA9UQu2NhLFXrSg0Brw7CexQekrBwDMM8bzeY=
 github.com/bep/debounce v1.2.1/go.mod h1:H8yggRPQKLUhUoqrJC1bO2xNya7vanpDl7xR3ISbCJ0=
 github.com/braheezy/shine-mp3 v0.1.0 h1:N2wZhv6ipCFduTSftaPNdDgZ5xFmQAPvB7JcqA4sSi8=

internal/adif/export.go

@@ -120,12 +120,36 @@ func (e *Exporter) writeDoc(ctx context.Context, w io.Writer, iter iterator) (in
 func SingleRecordADIF(q qso.QSO) string {
 	var b strings.Builder
 	bw := bufio.NewWriter(&b)
-	// Uploads target other services — keep it standard (no app-specific tags).
+	// Uploads target other services — keep it standard (no app-specific tags),
+	// and say nothing about the receive side when there is nothing to say: in
+	// ADIF an absent BAND_RX/FREQ_RX means "same as transmit", and a logger
+	// given both draws both. Wavelog reads a simplex FT8 contact uploaded with
+	// BAND_RX filled in as split and shows it as "17m/17m".
 	writeRecord(bw, q, false, nil)
 	bw.Flush()
 	return b.String()
 }
 
+// ForwardRecordADIF is the record sent to ANOTHER LOGGER on the UDP link.
+//
+// The receive side is written even when it repeats the transmit side, which is
+// the opposite of the upload rule above and is deliberate: Log4OM reads BAND_RX
+// and found nothing there for contacts logged by a path that left it blank. A
+// logger on the same desk is being handed a copy of our record, not published
+// to a service that will draw conclusions from every tag present.
+func ForwardRecordADIF(q qso.QSO) string {
+	var b strings.Builder
+	bw := bufio.NewWriter(&b)
+	writeRecord(bw, q, false, nil, keepRX)
+	bw.Flush()
+	return b.String()
+}
+
+// keepRX marks a record whose receive side must be written out in full.
+type rxMode int
+
+const keepRX rxMode = 1
+
 // FullRecordADIF serialises one QSO LOSSLESSLY — including the APP_* extras —
 // so it can be written out and read back with nothing dropped. Used by the
 // offline queue: a QSO parked in the safety file must come back identical
@@ -161,7 +185,18 @@ func BatchRecordsADIF(records []string) string {
 // Empty fields are omitted. MODE/SUBMODE are massaged so a "promoted"
 // mode (e.g. FT4 stored without a parent) is exported as the canonical
 // pair MODE=MFSK SUBMODE=FT4 — round-trips cleanly with strict loggers.
-func writeRecord(bw *bufio.Writer, q qso.QSO, includeApp bool, allow map[string]bool) {
+func writeRecord(bw *bufio.Writer, q qso.QSO, includeApp bool, allow map[string]bool, rx ...rxMode) {
+	// The receive side, unless it merely repeats the transmit side. See
+	// SingleRecordADIF and ForwardRecordADIF.
+	bandRX, freqRX := q.BandRX, q.FreqRXHz
+	if len(rx) == 0 || rx[0] != keepRX {
+		if strings.EqualFold(strings.TrimSpace(bandRX), strings.TrimSpace(q.Band)) {
+			bandRX = ""
+		}
+		if freqRX != nil && q.FreqHz != nil && *freqRX == *q.FreqHz {
+			freqRX = nil
+		}
+	}
 	// allow == nil → write every promoted field (standard/full behaviour).
 	// Otherwise a promoted tag is written only when it's in the chosen set.
 	// w/wi/wf wrap the raw writers with that gate so the ~150 field lines below
@@ -194,7 +229,7 @@ func writeRecord(bw *bufio.Writer, q qso.QSO, includeApp bool, allow map[string]
 		w("TIME_OFF", q.QSODateOff.UTC().Format("150405"))
 	}
 	w("BAND", q.Band)
-	w("BAND_RX", q.BandRX)
+	w("BAND_RX", bandRX)
 
 	mode, submode := modeForExport(q.Mode, q.Submode)
 	w("MODE", mode)
@@ -203,8 +238,8 @@ func writeRecord(bw *bufio.Writer, q qso.QSO, includeApp bool, allow map[string]
 	if q.FreqHz != nil && *q.FreqHz > 0 {
 		w("FREQ", strconv.FormatFloat(float64(*q.FreqHz)/1_000_000, 'f', 6, 64))
 	}
-	if q.FreqRXHz != nil && *q.FreqRXHz > 0 {
-		w("FREQ_RX", strconv.FormatFloat(float64(*q.FreqRXHz)/1_000_000, 'f', 6, 64))
+	if freqRX != nil && *freqRX > 0 {
+		w("FREQ_RX", strconv.FormatFloat(float64(*freqRX)/1_000_000, 'f', 6, 64))
 	}
 
 	w("RST_SENT", q.RSTSent)
@@ -372,12 +407,41 @@ func writeRecord(bw *bufio.Writer, q qso.QSO, includeApp bool, allow map[string]
 // length is the byte count (ADIF spec), which matches len(v) in Go since v is
 // already a UTF-8 byte string.
 func writeField(bw *bufio.Writer, tag, v string) {
+	v = oneLine(v)
 	if v == "" {
 		return
 	}
 	fmt.Fprintf(bw, "<%s:%d>%s ", tag, len(v), v)
 }
 
+// oneLine flattens a value onto a single line.
+//
+// ADIF counts bytes, so a value carrying line breaks is still read correctly —
+// and it turns the file into something nobody can read. ADDRESS is a multi-line
+// field by the standard, and callbooks and other loggers fill it that way: a
+// value of "Kabul" followed by four blank lines and "Afghanistan" came out of
+// OpsLog as one record spread down a dozen lines, with the next record
+// apparently starting in the middle of the page.
+//
+// The breaks are dropped rather than escaped: the parts are trimmed and joined
+// with a comma, which is how an address reads on one line anyway, and empty
+// fragments go. The length prefix is computed after this, so the record stays
+// exact.
+func oneLine(v string) string {
+	if !strings.ContainsAny(v, "\r\n\t") {
+		return v
+	}
+	parts := strings.FieldsFunc(v, func(r rune) bool { return r == '\r' || r == '\n' })
+	out := make([]string, 0, len(parts))
+	for _, part := range parts {
+		part = strings.TrimSpace(strings.ReplaceAll(part, "\t", " "))
+		if part != "" {
+			out = append(out, part)
+		}
+	}
+	return strings.Join(out, ", ")
+}
+
 func writeIntPtr(bw *bufio.Writer, tag string, p *int) {
 	if p == nil {
 		return

internal/adif/oneline_test.go

@@ -0,0 +1,46 @@
+package adif
+
+import (
+	"bufio"
+	"strings"
+	"testing"
+
+	"hamlog/internal/qso"
+)
+
+// An exported record has to fit on its own line. ADDRESS is a multi-line field
+// by the standard and callbooks fill it that way, so an OpsLog export was one
+// record spread down a dozen lines with the next apparently starting in the
+// middle of the page.
+func TestAMultiLineValueIsWrittenOnOneLine(t *testing.T) {
+	var b strings.Builder
+	bw := bufio.NewWriter(&b)
+	writeField(bw, "ADDRESS", "Kabul\r\n\r\n\r\n\r\nAfghanistan\r\n")
+	bw.Flush()
+
+	got := b.String()
+	if strings.ContainsAny(got, "\r\n") {
+		t.Fatalf("the record still breaks across lines: %q", got)
+	}
+	if want := "<ADDRESS:18>Kabul, Afghanistan "; got != want {
+		t.Errorf("got %q, want %q", got, want)
+	}
+}
+
+// And the whole record, the way an operator reads the file.
+func TestARecordIsOneLine(t *testing.T) {
+	hz := int64(28555000)
+	rec := SingleRecordADIF(qso.QSO{
+		Callsign: "T6T", Band: "10m", Mode: "SSB", FreqHz: &hz,
+		Address: "Kabul\n\n\nAfghanistan", Name: "Shuravi\t(Vyacheslav)",
+	})
+	if n := strings.Count(strings.TrimRight(rec, "\r\n"), "\n"); n != 0 {
+		t.Errorf("the record spans %d extra lines:\n%s", n, rec)
+	}
+	if !strings.Contains(rec, "Kabul, Afghanistan") {
+		t.Errorf("the address lost its parts:\n%s", rec)
+	}
+	if !strings.Contains(rec, "Shuravi (Vyacheslav)") {
+		t.Errorf("a tab was left in the value:\n%s", rec)
+	}
+}

internal/audio/manager.go

@@ -15,6 +15,12 @@ type Manager struct {
 	mu      sync.Mutex
 	recStop chan struct{}
 	recDone chan recResult
+	// Said once each: "the audio is reaching the speakers" and "it is arriving
+	// with nobody listening". Both are answers to the same evening — sound
+	// switched on, nothing out of the speakers — and neither is worth a line per
+	// packet at fifty packets a second.
+	gotAudioOnce sync.Once
+	noSinkOnce   sync.Once
 	// monGainPct scales what the RX monitor plays, 100 = as captured.
 	//
 	// The "From radio" slider used to reach only the QSO recorder, so an
@@ -224,6 +230,10 @@ func (m *Manager) StartMonitor(inputDev, outputDev string) error {
 	return m.startMonitor(inputDev, outputDev, true)
 }
 
+// Logf receives this package's diagnostic lines. Set to applog.Printf by the
+// app; a no-op in tests and for anything that vendors the package alone.
+var Logf = func(string, ...any) {}
+
 // StartMonitorSink starts ONLY the render side (no USB capture) so an external
 // producer — the network 50003 stream — can feed decoded RX PCM via
 // PushMonitorAudio. Same output path as StartMonitor, minus the capture goroutine.
@@ -255,8 +265,17 @@ func (m *Manager) startMonitor(inputDev, outputDev string, capture bool) error {
 		}()
 	}
 	// Consumer: render the ring to the output device at the internal 16 kHz mono.
+	//
+	// The error was thrown away, and that is the whole of "I turned the sound on
+	// and nothing comes out": a Listening device that has been unplugged, renamed
+	// by Windows or cannot open at 16 kHz fails here, silently, while everything
+	// upstream reports success — the stream is up, the packets arrive, the
+	// monitor says it started. Said out loud, the operator knows to look at the
+	// device rather than at the radio.
 	go func() {
-		_ = renderStream(outputDev, sampleRate, channels, bitsPerSample, stop, ring)
+		if err := renderStream(outputDev, sampleRate, channels, bitsPerSample, stop, ring); err != nil {
+			Logf("audio: the Listening device could not be opened (%q): %v", outputDev, err)
+		}
 	}()
 	m.notify()
 	return nil
@@ -321,9 +340,19 @@ func (m *Manager) PushMonitorAudio(pcm []byte) {
 	m.mu.Lock()
 	ring := m.monRing
 	m.mu.Unlock()
-	if ring != nil {
-		ring.Push(pcm)
+	if ring == nil {
+		// Nothing is listening: the stream is feeding the recorder and the voice
+		// keyer only. Said ONCE, because the alternative — silence in the log for
+		// silence in the speakers — is what makes this take an evening to find.
+		m.noSinkOnce.Do(func() {
+			Logf("audio: network RX audio is arriving but no monitor is running — the speakers are off (Listening)")
+		})
+		return
 	}
+	m.gotAudioOnce.Do(func() {
+		Logf("audio: network RX audio reaching the Listening device (%d-byte chunks)", len(pcm))
+	})
+	ring.Push(pcm)
 }
 
 // ---- TX audio passthrough (Phase 3: live mic → rig over USB) --------------

internal/autocall/autocall_test.go

@@ -0,0 +1,978 @@
+package autocall
+
+import (
+	"fmt"
+	"strings"
+	"testing"
+	"time"
+)
+
+const me = "F4BPO"
+
+// base is a slot boundary, so slot parity in the tests is the real arithmetic.
+var base = time.Date(2026, 9, 6, 12, 0, 0, 0, time.UTC)
+
+func at(period int) time.Time { return base.Add(time.Duration(period) * 15 * time.Second) }
+
+func cq(call string, need Need, snr int, opts ...func(*Candidate)) Candidate {
+	c := Candidate{
+		Decode: Decode{Call: call, Band: "20m", Mode: "FT8", SNR: snr, CQ: true,
+			Msg: "CQ " + call + " JN36", TRPeriod: 15, IsNew: true},
+		Need: need,
+	}
+	for _, o := range opts {
+		o(&c)
+	}
+	return c
+}
+
+func watched(c *Candidate) { c.Watched = true }
+func worked(c *Candidate)  { c.Worked = true }
+
+// busy is a station in the middle of an exchange with somebody else.
+func busy(call string, need Need, snr int) Candidate {
+	c := cq(call, need, snr)
+	c.CQ = false
+	c.Msg = "VP6D " + call + " JN36"
+	return c
+}
+
+// callsMe is a station answering us.
+func callsMe(call string, need Need, snr int) Candidate {
+	c := cq(call, need, snr)
+	c.CQ = false
+	c.Msg = me + " " + call + " -12"
+	return c
+}
+
+func period(n int, decodes ...Candidate) Period {
+	for i := range decodes {
+		decodes[i].At = at(n)
+	}
+	return Period{Key: fmt.Sprintf("p%d", n), At: at(n), TRPeriod: 15, Decodes: decodes, MyCall: me}
+}
+
+func on() *Engine { return New(Settings{Enabled: true}) }
+
+// ── The ladder ────────────────────────────────────────────────────────────
+
+func TestLadderOrder(t *testing.T) {
+	// Every rung. The watched ones come FIRST, ordered among themselves by what
+	// is needed — the list is the operator's answer, not a tie-breaker.
+	order := []Candidate{
+		cq("A", NeedDXCC, 0, watched), cq("C", NeedBand, 0, watched),
+		cq("E", NeedMode, 0, watched), cq("G", NeedSlot, 0, watched),
+		cq("I", NeedNone, 0, watched),
+		cq("B", NeedDXCC, 0), cq("D", NeedBand, 0),
+		cq("F", NeedMode, 0), cq("H", NeedSlot, 0),
+		// The orthogonal markers sit at the foot of the ladder: worth a call
+		// when nothing better is on the air, never worth leaving a band for.
+		cq("J", NeedExtra, 0),
+	}
+	for i := 1; i < len(order); i++ {
+		if rank(order[i-1]) <= rank(order[i]) {
+			t.Errorf("%s (%d) does not outrank %s (%d)",
+				order[i-1].Call, rank(order[i-1]), order[i].Call, rank(order[i]))
+		}
+	}
+	// A station with nothing needed and not watched is not called at all.
+	if rank(cq("Z", NeedNone, 0)) != 0 {
+		t.Error("a station with nothing to gain from it ranks above zero")
+	}
+	// And the pick agrees with the ladder, whatever order the period lists them.
+	e := on()
+	a := e.OnPeriod(period(0, order[8], order[5], order[0], order[6]))
+	if a.Kind != DoReply || a.Decode.Call != "A" {
+		t.Fatalf("picked %+v, want the watched new entity", a)
+	}
+	// A watched station with NOTHING needed still beats a new entity that is not
+	// watched — the case that sent an operator hunting: a watched DXpedition sat
+	// on the band all evening while the engine worked what the log wanted.
+	e = on()
+	if a := e.OnPeriod(period(2, cq("RARE", NeedDXCC, 0), cq("WATCHED", NeedNone, -20, watched))); a.Decode.Call != "WATCHED" {
+		t.Errorf("picked %q, want the watched callsign", a.Decode.Call)
+	}
+}
+
+func TestStrongestWinsBetweenEquals(t *testing.T) {
+	e := on()
+	a := e.OnPeriod(period(0, cq("WEAK", NeedBand, -20), cq("LOUD", NeedBand, -5)))
+	if a.Decode.Call != "LOUD" {
+		t.Errorf("picked %q, want the strongest of two equal needs", a.Decode.Call)
+	}
+}
+
+// ── The busy station ──────────────────────────────────────────────────────
+
+func TestBusyStationIsNeverCalled(t *testing.T) {
+	e := on()
+	// The new entity is answering a DXpedition; the new band is calling CQ.
+	a := e.OnPeriod(period(0, busy("RARE", NeedDXCC, -3), cq("DL1XX", NeedBand, -15)))
+	if a.Kind != DoReply || a.Decode.Call != "DL1XX" {
+		t.Fatalf("called %+v — a station in mid-QSO cannot answer and must not be called", a)
+	}
+	// It is not banned: the moment it calls CQ it takes the slot back, once the
+	// QSO in hand is over.
+	e2 := on()
+	if a := e2.OnPeriod(period(0, cq("RARE", NeedDXCC, -3))); a.Decode.Call != "RARE" {
+		t.Errorf("the same station calling CQ was not called: %+v", a)
+	}
+}
+
+func TestFinalFrameIsCallable(t *testing.T) {
+	e := on()
+	c := busy("RARE", NeedDXCC, -3)
+	c.Msg = "IK2AAA RARE RR73" // one frame from being free
+	if a := e.OnPeriod(period(0, c)); a.Kind != DoReply {
+		t.Errorf("a station sending its last frame is free next period: %+v", a)
+	}
+}
+
+// ── The brakes ────────────────────────────────────────────────────────────
+
+func TestAttemptsCapAtSevenAndFifteen(t *testing.T) {
+	for _, tc := range []struct {
+		name string
+		opt  func(*Candidate)
+		want int
+	}{{"plain", func(*Candidate) {}, 7}, {"watched", watched, 15}} {
+		e := on()
+		e.OnPeriod(period(0, cq("DX", NeedDXCC, -5, tc.opt)))
+		tx := TXState{Transmitting: true, Msg: "DX " + me + " JN36"}
+		for i := 1; i < tc.want; i++ {
+			if a := e.NoteTX(tx); a.Kind != DoNothing {
+				t.Fatalf("%s: gave up at call %d of %d", tc.name, i, tc.want)
+			}
+		}
+		a := e.NoteTX(tx)
+		if a.Kind != DoHalt {
+			t.Errorf("%s: still calling after %d attempts", tc.name, tc.want)
+		}
+		if e.Target() != "" {
+			t.Errorf("%s: target still held after giving up", tc.name)
+		}
+	}
+}
+
+func TestOnlyFreshCallsCount(t *testing.T) {
+	e := on()
+	e.OnPeriod(period(0, cq("DX", NeedDXCC, -5)))
+	// The rest of the exchange is not a call: without this the seven were spent
+	// on one QSO in progress.
+	for _, msg := range []string{"DX " + me + " -12", "DX " + me + " R-12", "DX " + me + " RR73"} {
+		if a := e.NoteTX(TXState{Transmitting: true, Msg: msg}); a.Kind != DoNothing {
+			t.Fatalf("%q ended the series", msg)
+		}
+	}
+	if e.Status().Attempts != 0 {
+		t.Errorf("attempts = %d after three QSO frames, want 0", e.Status().Attempts)
+	}
+	// A transmission aimed at somebody else counts for nothing either.
+	e.NoteTX(TXState{Transmitting: true, Msg: "OTHER " + me + " JN36"})
+	if e.Status().Attempts != 0 {
+		t.Errorf("a call to another station was counted against the target")
+	}
+}
+
+func TestMissesOnlyCountTheStationsOwnPeriods(t *testing.T) {
+	e := on()
+	e.OnPeriod(period(0, cq("DX", NeedDXCC, -5))) // learns nothing yet
+	e.OnPeriod(period(2, cq("DX", NeedDXCC, -5))) // seen: it transmits on even periods
+	// Its listening periods say nothing about it. Ten of them must not add up
+	// to a give-up.
+	for _, p := range []int{3, 5, 7, 9, 11} {
+		if a := e.OnPeriod(period(p)); a.Kind != DoNothing {
+			t.Fatalf("gave up during the station's own listening period %d", p)
+		}
+	}
+	if e.Status().Misses != 0 {
+		t.Errorf("misses = %d over five listening periods, want 0", e.Status().Misses)
+	}
+	// Absent from two of its transmit periods: still holding.
+	e.OnPeriod(period(4))
+	e.OnPeriod(period(6))
+	if e.Target() == "" {
+		t.Fatal("gave up after two misses, the limit is three")
+	}
+	if a := e.OnPeriod(period(8)); a.Kind != DoHalt {
+		t.Errorf("still holding after three missed transmit periods: %+v", a)
+	}
+}
+
+func TestOneMissPerPeriodEvenIfTheHandlerRunsTwice(t *testing.T) {
+	e := on()
+	e.OnPeriod(period(0, cq("DX", NeedDXCC, -5)))
+	e.OnPeriod(period(2, cq("DX", NeedDXCC, -5)))
+	p := period(4)
+	e.OnPeriod(p)
+	e.OnPeriod(p)
+	e.OnPeriod(p)
+	if e.Status().Misses != 1 {
+		t.Errorf("misses = %d after one period handled three times, want 1", e.Status().Misses)
+	}
+}
+
+func TestClockBackstopReleasesAStuckTarget(t *testing.T) {
+	e := on()
+	e.OnPeriod(period(0, cq("DX", NeedDXCC, -5)))
+	// Decoded every one of its periods and never answering, with the decoder
+	// never reporting a transmission: no counter can advance.
+	for p := 2; p <= 16; p += 2 {
+		e.OnPeriod(period(p, cq("DX", NeedDXCC, -5)))
+	}
+	if a := e.OnPeriod(period(18, cq("DX", NeedDXCC, -5))); a.Kind != DoHalt {
+		t.Errorf("a target held past MaxHold with no counter moving was never released: %+v", a)
+	}
+}
+
+// ── After a series ────────────────────────────────────────────────────────
+
+func TestAReleasedStationYieldsToAnythingBetter(t *testing.T) {
+	e := on()
+	e.OnPeriod(period(0, cq("DX", NeedBand, -5)))
+	tx := TXState{Transmitting: true, Msg: "DX " + me + " JN36"}
+	for i := 0; i < 7; i++ {
+		e.NoteTX(tx)
+	}
+	if e.Target() != "" {
+		t.Fatal("still holding after seven calls")
+	}
+	// It is still there, and so is a new entity: the entity takes the slot.
+	a := e.OnPeriod(period(2, cq("DX", NeedBand, -5), cq("RARE", NeedDXCC, -20)))
+	if a.Decode.Call != "RARE" {
+		t.Errorf("picked %q, want the higher priority over the station just released", a.Decode.Call)
+	}
+}
+
+// A series that ended in a brake is followed by ONE of the station's own overs
+// passed over — long enough to be a pause, short enough that the DX everybody
+// is chasing is still there when the calling resumes. It used to be two
+// minutes, which on FT8 is four overs: by then the DX has worked four other
+// callers, and half the time it has gone.
+func TestAReleasedStationSitsOutOneOfItsOvers(t *testing.T) {
+	e := on()
+	e.OnPeriod(period(0, cq("DX", NeedBand, -5)))
+	tx := TXState{Transmitting: true, Msg: "DX " + me + " JN36"}
+	for i := 0; i < 7; i++ {
+		e.NoteTX(tx)
+	}
+	// Its very next over is passed over, whatever else is on the air: seven
+	// calls, a halt, and the same station called again four seconds later is not
+	// a rest, it is a stutter.
+	if a := e.OnPeriod(period(2, cq("DX", NeedBand, -5))); a.Kind != DoNothing {
+		t.Fatalf("called again during the rest: %+v", a)
+	}
+	// And the one after that goes: still there, still wanted, and the operator
+	// has listened through an over.
+	if a := e.OnPeriod(period(4, cq("DX", NeedBand, -5))); a.Kind != DoReply {
+		t.Errorf("after one over: %+v, want the station called again", a)
+	}
+}
+
+func TestTheAttemptsCapLetsTheOverFinish(t *testing.T) {
+	e := on()
+	e.OnPeriod(period(0, cq("DX", NeedDXCC, -5)))
+	tx := TXState{Transmitting: true, Msg: "DX " + me + " JN36"}
+	var a Action
+	for i := 0; i < 7; i++ {
+		a = e.NoteTX(tx)
+	}
+	if a.Kind != DoHalt {
+		t.Fatalf("no halt after seven calls: %+v", a)
+	}
+	// The cap trips WHILE the seventh call is going out — cutting the carrier
+	// there sends half a call. It asks the decoder to finish the over first.
+	if !a.Soft {
+		t.Error("the attempts cap cut the transmission that counted it")
+	}
+}
+
+func TestAStationIsParkedAfterItsRounds(t *testing.T) {
+	e := on()
+	tx := TXState{Transmitting: true, Msg: "DX " + me + " JN36"}
+	// Rounds are spaced past the rest (2 min = 8 periods) or the station would
+	// simply be resting rather than parked.
+	for round := 1; round <= 3; round++ {
+		a := e.OnPeriod(period(round*10, cq("DX", NeedBand, -5)))
+		if a.Kind != DoReply {
+			t.Fatalf("round %d: not called (%+v)", round, a)
+		}
+		for i := 0; i < 7; i++ {
+			e.NoteTX(tx)
+		}
+	}
+	// Three series of seven is twenty-one calls. That is the end of it for this
+	// session — the whole point of the exercise is that it cannot reach fifty.
+	if a := e.OnPeriod(period(60, cq("DX", NeedBand, -5))); a.Kind != DoNothing {
+		t.Errorf("a fourth series was started: %+v", a)
+	}
+}
+
+// ── Handing over ──────────────────────────────────────────────────────────
+
+func TestFinishedQSOMovesToTheNextPriority(t *testing.T) {
+	e := on()
+	e.OnPeriod(period(0, cq("DX", NeedDXCC, -5)))
+	done := callsMe("DX", NeedDXCC, -5)
+	done.Msg = me + " DX RR73"
+	// The period the QSO ends in belongs to our own 73 — nothing else is called.
+	if a := e.OnPeriod(period(2, done, cq("NEXT", NeedBand, -10))); a.Kind != DoNothing {
+		t.Fatalf("took the slot our 73 goes out in: %+v", a)
+	}
+	a := e.OnPeriod(period(4, cq("NEXT", NeedBand, -10)))
+	if a.Kind != DoReply || a.Decode.Call != "NEXT" {
+		t.Errorf("next period: %+v, want the next priority", a)
+	}
+}
+
+func TestFinishedQSOWithNoPriorityAnswersWhoeverIsCallingUs(t *testing.T) {
+	e := on()
+	e.OnPeriod(period(0, cq("DX", NeedDXCC, -5)))
+	done := callsMe("DX", NeedDXCC, -5)
+	done.Msg = me + " DX RR73"
+	// Two stations calling us, nothing needed from either: the strongest wins —
+	// on the period after the one our 73 goes out in.
+	weak := callsMe("WEAK", NeedNone, -18)
+	weak.Watched = true
+	loud := callsMe("LOUD", NeedNone, -4)
+	loud.Watched = true
+	e.OnPeriod(period(2, done))
+	a := e.OnPeriod(period(4, weak, loud))
+	if a.Kind != DoReply || a.Decode.Call != "LOUD" {
+		t.Errorf("answered %+v, want the strongest of the stations calling us", a)
+	}
+}
+
+func TestAlreadyWorkedIsNeverCalled(t *testing.T) {
+	e := on()
+	a := e.OnPeriod(period(0, cq("DX", NeedDXCC, -5, worked)))
+	if a.Kind != DoNothing {
+		t.Errorf("called a station already in the log on this band and mode: %+v", a)
+	}
+}
+
+func TestReplayedHistoryIsNeverCalled(t *testing.T) {
+	e := on()
+	old := cq("DX", NeedDXCC, -5)
+	old.IsNew = false
+	if a := e.OnPeriod(period(0, old)); a.Kind != DoNothing {
+		t.Errorf("answered a replayed decode: %+v", a)
+	}
+}
+
+func TestNoCallStartsOverATransmissionInProgress(t *testing.T) {
+	e := on()
+	p := period(0, cq("DX", NeedDXCC, -5))
+	p.TX = TXState{Transmitting: true}
+	if a := e.OnPeriod(p); a.Kind != DoNothing {
+		t.Errorf("started a call while the decoder was transmitting: %+v", a)
+	}
+}
+
+// ── The "call this station" field ─────────────────────────────────────────
+
+func TestOnlyCallsThatStation(t *testing.T) {
+	e := New(Settings{Enabled: true, Only: "VP6D"})
+	a := e.OnPeriod(period(0, cq("RARE", NeedDXCC, -5), cq("VP6D", NeedSlot, -20)))
+	if a.Kind != DoReply || a.Decode.Call != "VP6D" {
+		t.Fatalf("picked %+v, want the station named in the field", a)
+	}
+	// Same brakes, then a hard stop: there is nothing else it was asked to do.
+	tx := TXState{Transmitting: true, Msg: "VP6D " + me + " JN36"}
+	for i := 0; i < 7; i++ {
+		e.NoteTX(tx)
+	}
+	if !e.Status().Stopped {
+		t.Error("an explicit target ran out of attempts and the feature did not stop")
+	}
+	if a := e.OnPeriod(period(2, cq("VP6D", NeedSlot, -20))); a.Kind != DoNothing {
+		t.Errorf("kept calling after the stop: %+v", a)
+	}
+	e.Reset()
+	if a := e.OnPeriod(period(4, cq("VP6D", NeedSlot, -20))); a.Kind != DoReply {
+		t.Errorf("the operator restarted it and nothing happened: %+v", a)
+	}
+}
+
+func TestDisabledDoesNothingAtAll(t *testing.T) {
+	e := New(Settings{})
+	if a := e.OnPeriod(period(0, cq("DX", NeedDXCC, 0))); a.Kind != DoNothing {
+		t.Errorf("switched off and still calling: %+v", a)
+	}
+	if a := e.NoteTX(TXState{Transmitting: true, Msg: "DX " + me + " JN36"}); a.Kind != DoNothing {
+		t.Errorf("switched off and still counting: %+v", a)
+	}
+}
+
+func TestOnlyStopsOnceThatStationIsWorked(t *testing.T) {
+	e := New(Settings{Enabled: true, Only: "VP6D"})
+	e.OnPeriod(period(0, cq("VP6D", NeedDXCC, -10)))
+	done := callsMe("VP6D", NeedDXCC, -10)
+	done.Msg = me + " VP6D RR73"
+	e.OnPeriod(period(2, done))
+	// The station is still on the air calling CQ. It has been worked: an
+	// explicit request is for one QSO, not for the whole evening.
+	if a := e.OnPeriod(period(4, cq("VP6D", NeedDXCC, -10))); a.Kind != DoNothing {
+		t.Errorf("called the named station again after working it: %+v", a)
+	}
+}
+
+func TestAStationJustWorkedIsNotCalledBackWhileTheLogCatchesUp(t *testing.T) {
+	e := on()
+	e.OnPeriod(period(0, cq("DX", NeedDXCC, -5)))
+	done := callsMe("DX", NeedDXCC, -5)
+	done.Msg = me + " DX RR73"
+	e.OnPeriod(period(2, done))
+	// Still flagged as a new entity — the QSO is not in the log yet — and still
+	// calling CQ. It must not be answered again.
+	if a := e.OnPeriod(period(4, cq("DX", NeedDXCC, -5))); a.Kind != DoNothing {
+		t.Errorf("called back a station worked two periods ago: %+v", a)
+	}
+}
+
+func TestChaseListTakesSeveralCallsigns(t *testing.T) {
+	// Typed the way an operator types a list: commas, spaces, or both.
+	for _, field := range []string{"VP6D 3Y0J", "vp6d,3y0j", "VP6D, 3Y0J", " VP6D ;3Y0J "} {
+		if got := onlyList(field); len(got) != 2 || got[0] != "VP6D" || got[1] != "3Y0J" {
+			t.Errorf("%q parsed as %v, want [VP6D 3Y0J]", field, got)
+		}
+	}
+
+	e := New(Settings{Enabled: true, Only: "VP6D, 3Y0J"})
+	// Nothing off the list is called, however rare it is.
+	if a := e.OnPeriod(period(0, cq("RARE", NeedDXCC, -1))); a.Kind != DoNothing {
+		t.Errorf("called a station that is not on the chase list: %+v", a)
+	}
+	// Between two listed stations the ladder still decides: the new entity over
+	// the new slot, whatever their order in the period.
+	a := e.OnPeriod(period(2, cq("3Y0J", NeedSlot, -1), cq("VP6D", NeedDXCC, -22)))
+	if a.Kind != DoReply || a.Decode.Call != "VP6D" {
+		t.Fatalf("picked %+v, want the new entity of the two listed", a)
+	}
+	// Working one of them leaves the other callable — the list is a hunt, not a
+	// single request.
+	done := callsMe("VP6D", NeedDXCC, -22)
+	done.Msg = me + " VP6D RR73"
+	e.OnPeriod(period(4, done, cq("3Y0J", NeedSlot, -1)))
+	a = e.OnPeriod(period(6, cq("3Y0J", NeedSlot, -1)))
+	if a.Kind != DoReply || a.Decode.Call != "3Y0J" {
+		t.Errorf("after working VP6D: %+v, want the other station on the list", a)
+	}
+}
+
+// ── Two decoders at once (the split view) ─────────────────────────────────
+
+func onInst(inst string, p Period) Period {
+	p.Instance = inst
+	for i := range p.Decodes {
+		p.Decodes[i].Instance = inst
+	}
+	return p
+}
+
+func TestTheOtherReceiverCannotBreakTheQSOInProgress(t *testing.T) {
+	e := on()
+	// Calling a new band on receiver A.
+	if a := e.OnPeriod(onInst("A", period(0, cq("DL1XX", NeedBand, -10)))); a.Decode.Call != "DL1XX" {
+		t.Fatalf("first call went to %+v", a)
+	}
+	// Receiver B now hears a new ENTITY — a better catch by every rule. It must
+	// still not be called: one station at a time, and the QSO in hand is the
+	// one already under way.
+	if a := e.OnPeriod(onInst("B", period(1, cq("RARE", NeedDXCC, -1)))); a.Kind != DoNothing {
+		t.Errorf("the other receiver started a second QSO: %+v", a)
+	}
+	// And B's periods count no misses against A's target: the station is not
+	// absent from B, it was never on that band.
+	e.OnPeriod(onInst("B", period(3, cq("RARE", NeedDXCC, -1))))
+	e.OnPeriod(onInst("B", period(5, cq("RARE", NeedDXCC, -1))))
+	e.OnPeriod(onInst("B", period(7, cq("RARE", NeedDXCC, -1))))
+	if e.Status().Misses != 0 || e.Target() != "DL1XX" {
+		t.Errorf("misses = %d, target = %q — the other receiver's periods were counted",
+			e.Status().Misses, e.Target())
+	}
+	// B transmitting its own QSO is not us calling DL1XX either.
+	for i := 0; i < 9; i++ {
+		e.NoteTX(TXState{Transmitting: true, Instance: "B", Msg: "DL1XX " + me + " JN36"})
+	}
+	if e.Status().Attempts != 0 {
+		t.Errorf("attempts = %d from the other receiver's transmissions, want 0", e.Status().Attempts)
+	}
+	// A's own transmissions do count.
+	e.NoteTX(TXState{Transmitting: true, Instance: "A", Msg: "DL1XX " + me + " JN36"})
+	if e.Status().Attempts != 1 {
+		t.Errorf("attempts = %d after one call from the calling receiver, want 1", e.Status().Attempts)
+	}
+	// Once the QSO is over, the other receiver's station is free to be taken.
+	done := callsMe("DL1XX", NeedBand, -10)
+	done.Msg = me + " DL1XX RR73"
+	e.OnPeriod(onInst("A", period(9, done)))
+	if a := e.OnPeriod(onInst("B", period(11, cq("RARE", NeedDXCC, -1)))); a.Decode.Call != "RARE" {
+		t.Errorf("after the QSO ended, the other receiver was still locked out: %+v", a)
+	}
+}
+
+// The one reported from the air: his RRR arrives, we are sending our 73, and
+// the engine picked the next station in the same instant. WSJT-X acts on a
+// reply at once — it dropped the exchange and started calling the new station,
+// cutting the 73 a second in.
+func TestNothingIsCalledOverOurOwnTransmission(t *testing.T) {
+	e := on()
+	e.OnPeriod(period(0, cq("DX", NeedDXCC, -5)))
+	done := callsMe("DX", NeedDXCC, -5)
+	done.Msg = me + " DX RRR"
+	p := period(2, done, cq("NEXT", NeedBand, -10))
+	p.TX = TXState{Transmitting: true, Msg: "DX " + me + " 73"}
+	if a := e.OnPeriod(p); a.Kind != DoNothing {
+		t.Fatalf("called %+v while our own over was still going out", a)
+	}
+	// The QSO is still released — only the next call waits.
+	if e.Target() != "" {
+		t.Errorf("target = %q after the QSO finished, want none", e.Target())
+	}
+	// Next period, carrier down: now it may take the next station.
+	if a := e.OnPeriod(period(4, cq("NEXT", NeedBand, -10))); a.Kind != DoReply || a.Decode.Call != "NEXT" {
+		t.Errorf("once the transmission ended: %+v, want the next station called", a)
+	}
+}
+
+func TestTheHoldClockRestartsWhenTheStationAnswers(t *testing.T) {
+	e := on()
+	e.OnPeriod(period(0, cq("DX", NeedDXCC, -5)))
+	// Called for a long time — nearly the backstop — and then he answers.
+	for p := 2; p <= 14; p += 2 {
+		e.OnPeriod(period(p, cq("DX", NeedDXCC, -5)))
+	}
+	e.OnPeriod(period(16, callsMe("DX", NeedDXCC, -5)))
+	// The exchange must not be halted by a backstop that was counting the wait.
+	for _, p := range []int{18, 20} {
+		if a := e.OnPeriod(period(p, callsMe("DX", NeedDXCC, -5))); a.Kind == DoHalt {
+			t.Fatalf("period %d: halted an exchange in progress (%s)", p, a.Reason)
+		}
+	}
+}
+
+func TestARealNeedOutranksAnUnconfirmedOne(t *testing.T) {
+	real := cq("REAL", NeedBand, -20)
+	unconf := cq("UNCONF", NeedBand, -2)
+	unconf.Unconfirmed = true
+	// Same need, and the unconfirmed one is 18 dB louder. The band never worked
+	// is still the catch: the other is a QSL to chase, not a QSO to make.
+	e := on()
+	if a := e.OnPeriod(period(0, unconf, real)); a.Decode.Call != "REAL" {
+		t.Errorf("picked %q, want the band never worked", a.Decode.Call)
+	}
+	// Watched changes that, and is meant to: the list is the operator's answer.
+	unconf.Watched = true
+	e = on()
+	if a := e.OnPeriod(period(0, unconf, real)); a.Decode.Call != "UNCONF" {
+		t.Errorf("picked %q, want the watched station", a.Decode.Call)
+	}
+	unconf.Watched = false
+	// Between two unwatched stations, an unconfirmed BAND still beats a real
+	// SLOT: the band is the bigger prize whatever state it is in.
+	slot := cq("SLOT", NeedSlot, 0)
+	e = on()
+	if a := e.OnPeriod(period(0, slot, unconf)); a.Decode.Call != "UNCONF" {
+		t.Errorf("picked %q, want the unconfirmed band over a real slot", a.Decode.Call)
+	}
+}
+
+// ── The operator's Halt ───────────────────────────────────────────────────
+
+func TestHaltSetsTheStationAsideForTheSession(t *testing.T) {
+	e := on()
+	if a := e.OnPeriod(period(0, cq("DX", NeedDXCC, -5))); a.Decode.Call != "DX" {
+		t.Fatalf("not called: %+v", a)
+	}
+	// The operator stops it mid-call.
+	if got := e.Halt(); got != "DX" {
+		t.Fatalf("Halt returned %q, want the station being called", got)
+	}
+	if e.Target() != "" {
+		t.Error("the target survived a halt")
+	}
+	// Still the loudest new entity on the air, period after period. It is the
+	// operator's verdict, so it is not called again — not next period, not in
+	// ten minutes.
+	for _, n := range []int{2, 4, 40} {
+		if a := e.OnPeriod(period(n, cq("DX", NeedDXCC, -5))); a.Kind != DoNothing {
+			t.Errorf("period %d: called a station the operator had stopped: %+v", n, a)
+		}
+	}
+	// Naming it explicitly does not override the operator either.
+	e.SetSettings(Settings{Enabled: true, Only: "DX"})
+	if a := e.OnPeriod(period(42, cq("DX", NeedDXCC, -5))); a.Kind != DoNothing {
+		t.Errorf("the chase list overrode a halt: %+v", a)
+	}
+	// Switching auto-call off and on is what starts over.
+	e.Reset()
+	e.SetSettings(Settings{Enabled: true})
+	if a := e.OnPeriod(period(44, cq("DX", NeedDXCC, -5))); a.Kind != DoReply {
+		t.Errorf("after a restart the station is fair game again: %+v", a)
+	}
+}
+
+func TestHaltWithNothingBeingCalledIsJustAHalt(t *testing.T) {
+	e := on()
+	if got := e.Halt(); got != "" {
+		t.Errorf("Halt returned %q with no target", got)
+	}
+	if e.Greylisted() != 0 {
+		t.Errorf("greylisted %d stations from an idle halt", e.Greylisted())
+	}
+}
+
+func TestTraceSaysWhyNobodyWasCalled(t *testing.T) {
+	var lines []string
+	e := on()
+	e.SetTrace(func(f string, args ...any) { lines = append(lines, fmt.Sprintf(f, args...)) })
+
+	worked := cq("A", NeedDXCC, -5, worked)
+	nothing := cq("B", NeedNone, -5)
+	busyOne := busy("C", NeedBand, -5)
+	e.Halt() // nothing held: no-op, keeps the set empty
+	e.OnPeriod(period(0, worked, nothing, busyOne))
+
+	if len(lines) == 0 {
+		t.Fatal("tracing on and nothing was written")
+	}
+	got := lines[len(lines)-1]
+	for _, want := range []string{"decodes=3", "callable=0", "worked=1", "nothing-needed=1", "busy=1"} {
+		if !strings.Contains(got, want) {
+			t.Errorf("trace %q does not say %q", got, want)
+		}
+	}
+
+	// And when it DOES call, the line names the candidates it ranked.
+	lines = nil
+	e.OnPeriod(period(2, cq("DX", NeedBand, -9, watched)))
+	if len(lines) == 0 || !strings.Contains(lines[0], "DX(watched band,-9 dB,r118)") {
+		t.Errorf("trace %v does not describe the station it called", lines)
+	}
+}
+
+func TestAStationCallingUsIsAnsweredEvenWithNothingToGain(t *testing.T) {
+	e := on()
+	// A QSO has just ended and two stations are calling us. Neither is worth
+	// anything to the log — and both are worth answering: they have heard us,
+	// they are waiting, and the contact is one over away.
+	weak := callsMe("WEAK", NeedNone, -18)
+	loud := callsMe("LOUD", NeedNone, -3)
+	a := e.OnPeriod(period(0, weak, loud))
+	if a.Kind != DoReply || a.Decode.Call != "LOUD" {
+		t.Fatalf("answered %+v, want the strongest of the stations calling us", a)
+	}
+	// A caller already worked on this band and mode is a duplicate, not a QSO.
+	e = on()
+	done := callsMe("DUPE", NeedNone, -1)
+	done.Worked = true
+	if a := e.OnPeriod(period(2, done)); a.Kind != DoNothing {
+		t.Errorf("answered a station already in the log on this band and mode: %+v", a)
+	}
+	// And one the operator halted stays halted, however politely it calls.
+	e = on()
+	e.OnPeriod(period(4, cq("STOP", NeedDXCC, -5)))
+	e.Halt()
+	if a := e.OnPeriod(period(6, callsMe("STOP", NeedDXCC, -5))); a.Kind != DoNothing {
+		t.Errorf("answered a station the operator had stopped: %+v", a)
+	}
+	// A needed station still comes first: a caller with nothing to gain is
+	// answered when nothing better is on the air, which is what was asked for.
+	e = on()
+	if a := e.OnPeriod(period(8, callsMe("CALLER", NeedNone, 0), cq("RARE", NeedDXCC, -20))); a.Decode.Call != "RARE" {
+		t.Errorf("picked %q, want the new entity ahead of a caller with nothing needed", a.Decode.Call)
+	}
+}
+
+// TestAStationWorkingSomebodyElseIsNotCHOSEN — the test above is about a target
+// already being called; this is about picking one. A reply to a decode in
+// mid-exchange is a reply WSJT-X and JTDX may refuse outright, so it never
+// starts a call there.
+func TestAStationWorkingSomebodyElseIsNotCHOSEN(t *testing.T) {
+	e := on()
+	busyNow := busy("ON7GB", NeedSlot, +5)
+	busyNow.Msg = "PY2SAD ON7GB JO21"
+	if a := e.OnPeriod(period(0, busyNow)); a.Kind == DoReply {
+		t.Fatalf("called %+v — it is in a QSO with PY2SAD", a)
+	}
+	if e.Target() != "" {
+		t.Errorf("target is %q", e.Target())
+	}
+	// Its final frame is different: one period from free is the best moment
+	// there is to be calling it.
+	last := busy("ON7GB", NeedSlot, +5)
+	last.Msg = "PY2SAD ON7GB RR73"
+	if a := e.OnPeriod(period(2, last)); a.Kind != DoReply {
+		t.Errorf("%+v — a station on its last frame was not called", a)
+	}
+}
+
+func TestAFinalFrameToSomebodyElseIsNotABusyTarget(t *testing.T) {
+	e := on()
+	e.OnPeriod(period(0, cq("DX", NeedSlot, 0)))
+	// Sending RR73 to another station: one period from being free, and the best
+	// moment there is to be calling it.
+	wrap := busy("DX", NeedSlot, 0)
+	wrap.Msg = "PY2SAD DX RR73"
+	if a := e.OnPeriod(period(2, wrap)); a.Kind != DoNothing || e.Target() != "DX" {
+		t.Errorf("dropped a station that was finishing: %+v (target %q)", a, e.Target())
+	}
+}
+
+func TestNothingHiddenByThePanelIsCalled(t *testing.T) {
+	e := New(Settings{Enabled: true, OnScreenOnly: true})
+	// The operator has filtered the list down to CQs: what is not on the screen
+	// is not called, whatever the log makes of it.
+	hidden := cq("RARE", NeedDXCC, 0)
+	hidden.Hidden = true
+	shown := cq("PLAIN", NeedSlot, -20)
+	if a := e.OnPeriod(period(0, hidden, shown)); a.Decode.Call != "PLAIN" {
+		t.Errorf("picked %q, want the station the panel is showing", a.Decode.Call)
+	}
+	// With the panel publishing nothing, nothing is hidden and the ladder
+	// decides alone.
+	e = New(Settings{Enabled: true, OnScreenOnly: true})
+	free := cq("RARE", NeedDXCC, 0)
+	if a := e.OnPeriod(period(2, free, shown)); a.Decode.Call != "RARE" {
+		t.Errorf("picked %q with no filtering in force, want the new entity", a.Decode.Call)
+	}
+}
+
+// MSHV answers two stations in one transmission and the decoder prints them as
+// one line. Reported from the air: the DX was answering us in the second half
+// and the engine, reading only the first, dropped it as busy.
+func TestAMultiAnswerLineIsReadWhole(t *testing.T) {
+	fox := cq("HK0/PY8WW", NeedDXCC, -17, watched)
+	fox.CQ = false
+	fox.Msg = "YV5ALI RR73; " + me + " <HK0/PY8WW> -08"
+
+	if !callingUs(fox, me) {
+		t.Error("the second half is a report to us and was not read as one")
+	}
+	if !callable(fox, me) {
+		t.Error("a station answering us was judged uncallable")
+	}
+	// Held as the target, that line must not release it — it is the answer we
+	// were waiting for, not a station working somebody else.
+	e := on()
+	e.OnPeriod(period(0, cq("HK0/PY8WW", NeedDXCC, -17, watched)))
+	if a := e.OnPeriod(period(2, fox)); a.Kind != DoNothing || e.Target() != "HK0/PY8WW" {
+		t.Errorf("dropped the DX as it answered us: %+v (target %q)", a, e.Target())
+	}
+	// The exchange is under way, so the attempt counter has done its job.
+	if e.Status().Attempts != 0 {
+		t.Errorf("attempts = %d while in QSO, want 0", e.Status().Attempts)
+	}
+	// And its final frame to us, in the same shape, ends the QSO.
+	done := fox
+	done.Msg = "IK2ABC RR73; " + me + " <HK0/PY8WW> RR73"
+	if !finished([]Candidate{done}, "HK0/PY8WW", me) {
+		t.Error("a 73 to us inside a multi-answer line did not end the QSO")
+	}
+}
+
+// Reported from the air twice: the DX sends RR73, our own 73 is about to go
+// out, and the engine answered somebody else in that very slot — two
+// transmissions in one period, and the station at the other end never got the
+// frame that closes the contact.
+func TestTheSlotAfterAQSOBelongsToOur73(t *testing.T) {
+	e := on()
+	e.OnPeriod(period(0, cq("HP/WE9G", NeedDXCC, -6)))
+	bye := callsMe("HP/WE9G", NeedDXCC, -6)
+	bye.Msg = "<" + me + "> HP/WE9G RR73"
+	// A new band is decoding in the same period and is not called.
+	a := e.OnPeriod(period(2, bye, cq("GW8DX", NeedBand, +2)))
+	if a.Kind != DoNothing {
+		t.Fatalf("called %+v in the slot our 73 goes out in", a)
+	}
+	if !strings.Contains(a.Reason, "73") {
+		t.Errorf("reason %q does not say why the slot was left alone", a.Reason)
+	}
+	// It is still there fifteen seconds later, which is the whole cost.
+	if a := e.OnPeriod(period(4, cq("GW8DX", NeedBand, +2))); a.Kind != DoReply || a.Decode.Call != "GW8DX" {
+		t.Errorf("next period: %+v, want the new band called", a)
+	}
+}
+
+func TestABetterStationTakesOverBeforeAnybodyHasAnswered(t *testing.T) {
+	e := on()
+	e.OnPeriod(period(0, cq("PLAIN", NeedSlot, +10)))
+	// A watched station comes on the air: nothing has answered us yet, so the
+	// call in progress is worth less than the one now possible.
+	a := e.OnPeriod(period(2, cq("PLAIN", NeedSlot, +10), cq("WATCHED", NeedNone, -15, watched)))
+	if a.Kind != DoReply || a.Decode.Call != "WATCHED" {
+		t.Fatalf("%+v — a better station did not take over", a)
+	}
+
+	// Equal rungs do NOT take over while the station being called is on the air.
+	e = on()
+	e.OnPeriod(period(4, cq("A", NeedBand, 0)))
+	if a := e.OnPeriod(period(6, cq("A", NeedBand, 0), cq("B", NeedBand, +20))); a.Kind != DoNothing {
+		t.Errorf("%+v — swapped between two stations of equal value", a)
+	}
+	// But they do when it is absent: seven calls into the void while a station
+	// of the same value is calling CQ is what the operator was watching.
+	if a := e.OnPeriod(period(8, cq("B", NeedBand, +20))); a.Kind != DoReply || a.Decode.Call != "B" {
+		t.Errorf("%+v — kept calling a station that was not on the air", a)
+	}
+
+	// Once the station has answered, nothing takes its place.
+	e = on()
+	e.OnPeriod(period(10, cq("DX", NeedSlot, 0)))
+	e.OnPeriod(period(12, callsMe("DX", NeedSlot, 0)))
+	if a := e.OnPeriod(period(14, callsMe("DX", NeedSlot, 0), cq("RARE", NeedDXCC, 0, watched))); a.Kind != DoNothing {
+		t.Errorf("%+v — abandoned an exchange in progress", a)
+	}
+}
+
+// TestAnExchangeInProgressIsNeverAbandoned is the shack report: mid-QSO with
+// V31MA — its report decoded, our RR73 going out — and a station of a higher
+// rung called us from the other side of the screen. The engine switched.
+func TestAnExchangeInProgressIsNeverAbandoned(t *testing.T) {
+	e := on()
+	// V31MA is worth nothing on the ladder: worked before, nothing needed.
+	if a := e.OnPeriod(period(0, callsMe("V31MA", NeedNone, -12))); a.Kind != DoReply {
+		t.Fatalf("%+v — a station calling us was not answered", a)
+	}
+	// Its report arrives in the same period a better station calls us. That
+	// period used to be judged before the reply was taken into account.
+	a := e.OnPeriod(period(2,
+		callsMe("V31MA", NeedNone, -12),
+		callsMe("F5NNN", NeedSlot, -10)))
+	if a.Kind != DoNothing {
+		t.Fatalf("%+v — left V31MA mid-exchange", a)
+	}
+	if e.target == nil || e.target.Call != "V31MA" {
+		t.Fatalf("target is %v — the QSO in progress lost its place", e.target)
+	}
+
+	// Our own transmission settles it too: a report is not an opening call, so
+	// even a QSO the operator started by hand is protected.
+	e = on()
+	e.OnPeriod(period(4, cq("V31MA", NeedNone, -12, watched)))
+	e.NoteTX(TXState{Transmitting: true, Msg: "V31MA F4BPO RR73"})
+	if !e.answered {
+		t.Error("sending a report did not count as being inside the exchange")
+	}
+	if a := e.OnPeriod(period(6, cq("V31MA", NeedNone, -12, watched), callsMe("F5NNN", NeedDXCC, -10))); a.Kind != DoNothing {
+		t.Errorf("%+v — abandoned a QSO we were in the middle of", a)
+	}
+	if e.attempts != 0 {
+		t.Errorf("attempts=%d — an exchange frame was counted as a call", e.attempts)
+	}
+}
+
+// TestAPileupIsWorkedByCallingThroughIt is the shack report: D44TWO finishing a
+// contact, the call started, the DX coming back to somebody else — and the
+// engine giving up on a station that was one period from being free.
+func TestAPileupIsWorkedByCallingThroughIt(t *testing.T) {
+	e := on()
+	if a := e.OnPeriod(period(0, cq("D44TWO", NeedDXCC, -7))); a.Kind != DoReply {
+		t.Fatalf("%+v", a)
+	}
+	// It answers three other callers in a row — which is what a DX with a queue
+	// does, and calling through it is how the queue is joined.
+	does := func(n int) Action { return e.OnPeriod(period(n, busy("D44TWO", NeedDXCC, -7))) }
+	for _, n := range []int{2, 4, 6} {
+		if a := does(n); a.Kind != DoNothing {
+			t.Fatalf("%+v — stopped calling a station working the pileup", a)
+		}
+		if e.Target() != "D44TWO" {
+			t.Fatalf("target is %q — the station was released while it worked others", e.Target())
+		}
+	}
+	// And when it comes to us, the exchange starts as usual.
+	if a := e.OnPeriod(period(8, callsMe("D44TWO", NeedDXCC, -7))); a.Kind != DoNothing {
+		t.Errorf("%+v", a)
+	}
+	if !e.answered {
+		t.Error("the reply was not taken as the start of the exchange")
+	}
+
+	// A BETTER station may still take the slot while it is busy: nothing has
+	// been answered, so nothing is lost by moving.
+	e = on()
+	e.OnPeriod(period(10, cq("D44TWO", NeedSlot, -7)))
+	if a := e.OnPeriod(period(12, busy("D44TWO", NeedSlot, -7), cq("RARE", NeedDXCC, -20, watched))); a.Kind != DoReply || a.Decode.Call != "RARE" {
+		t.Errorf("%+v — a watched new one did not take the slot from a busy station", a)
+	}
+}
+
+// TestTheFirstCallStartsWithNoMisses is the shack report: a CQ answered for the
+// first time, and the toolbar already reading two misses out of three.
+func TestTheFirstCallStartsWithNoMisses(t *testing.T) {
+	e := on()
+	// It calls CQ on an odd slot; we answer.
+	if a := e.OnPeriod(period(1, cq("ER1CW", NeedBand, -2))); a.Kind != DoReply {
+		t.Fatalf("%+v", a)
+	}
+	// The next period is OURS: we are transmitting to it, and of course it is
+	// not decoded. That is not a miss.
+	pp := period(2)
+	pp.TX = TXState{Transmitting: true}
+	e.OnPeriod(pp)
+	if e.misses != 0 {
+		t.Fatalf("misses=%d after our own transmit period", e.misses)
+	}
+	// Nor is a period of the wrong parity with nothing in it.
+	e.OnPeriod(period(4))
+	if e.misses != 0 {
+		t.Fatalf("misses=%d — counted a period the station never transmits in", e.misses)
+	}
+	// ITS period, and it is not there: that is a miss.
+	e.OnPeriod(period(3))
+	if e.misses != 1 {
+		t.Fatalf("misses=%d — the station's own silent period was not counted", e.misses)
+	}
+}
+
+// Parking answers "it will not answer, stop wasting the evening on it" — which
+// is a verdict about a station the LOG picked out, not about one the OPERATOR
+// did. From the air: a watched ZD8GB, six streams a period, refused for the
+// rest of the session after two series of unanswered calls.
+func TestAWatchedCallsignIsNeverParked(t *testing.T) {
+	spent := func(c Candidate) *Engine {
+		e := New(Settings{Enabled: true, MaxRounds: 2})
+		e.OnPeriod(period(0)) // the engine's clock, so the rest below is period time
+		for i := 0; i < 2; i++ {
+			e.giveUp(strings.ToUpper(c.Call), c) // a series ended by a brake
+		}
+		return e
+	}
+
+	// Period 8, well past the rest that follows a series: what is left is the
+	// parking, and only the parking.
+	plain := cq("PLAIN", NeedDXCC, 0)
+	if a := spent(plain).OnPeriod(period(8, plain)); a.Kind == DoReply {
+		t.Errorf("%+v — a station whose series are spent was called again", a)
+	}
+
+	dx := cq("ZD8GB", NeedDXCC, 0, watched)
+	if a := spent(dx).OnPeriod(period(8, dx)); a.Kind != DoReply {
+		t.Errorf("%+v — a watched DXpedition was parked for the session", a)
+	}
+}
+
+// A period is judged more than once — the decodes arrive in a burst and
+// stragglers follow — and a later judgement of it holds a partial view, not
+// evidence that the station has gone. From the air: D2ACE answered in the very
+// period the counter then read as a miss.
+func TestAPeriodTheTargetWasSeenInIsNeverAMiss(t *testing.T) {
+	e := on()
+	if a := e.OnPeriod(period(1, cq("D2ACE", NeedBand, 13))); a.Kind != DoReply {
+		t.Fatalf("%+v", a)
+	}
+	// Its own next period: decoded, so the exchange is under way.
+	p := period(3, callsMe("D2ACE", NeedBand, 13))
+	e.OnPeriod(p)
+	if e.Status().Misses != 0 {
+		t.Fatalf("misses=%d after being decoded", e.Status().Misses)
+	}
+	// The same period again, this time from a flush that carries only the
+	// stragglers — the target is not among them.
+	e.OnPeriod(period(3))
+	if got := e.Status().Misses; got != 0 {
+		t.Errorf("misses=%d — a second flush of a period it was seen in counted against it", got)
+	}
+}

internal/cat/cat.go

@@ -9,6 +9,7 @@ package cat
 import (
 	"fmt"
 	"runtime"
+	"strings"
 	"sync"
 	"time"
 )
@@ -240,15 +241,81 @@ func (m *Manager) freqOffsetHz() int64 {
 // display trick: the readout would say 144 and every spot click, band change and
 // memory recall would send the rig somewhere 116 MHz away.
 func (m *Manager) SetFrequency(hz int64) error {
+	real := hz
 	if off := m.freqOffsetHz(); off != 0 && hz > off {
 		hz -= off
 	}
-	return m.exec(func(b Backend) error { return b.SetFrequency(hz) })
+	err := m.exec(func(b Backend) error { return b.SetFrequency(hz) })
+	if err == nil {
+		m.noteCommandedFreq(real)
+	}
+	return err
+}
+
+// noteCommandedFreq publishes a frequency the radio has just acknowledged,
+// without waiting for the next poll to come round and read it back.
+//
+// The wait is what this is about. A rigctl client — WSJT-X above all — sets a
+// frequency and then READS it back before it believes it is there, and until
+// then it will not decode, transmit or even update its own dial. Everything
+// answering "f" here comes from the last poll, so the answer was the OLD
+// frequency for as long as a poll cycle takes; on a rig reached over the
+// internet, where one cycle is many round trips, a band change from WSJT-X took
+// ten seconds to be believed while the radio itself had moved instantly.
+//
+// Only when NOT split. In split the two frequencies mean different VFOs and a
+// guess about which one just moved is how a client ends up writing the transmit
+// frequency onto the dial — the poll is left to settle that case.
+func (m *Manager) noteCommandedFreq(hz int64) {
+	if hz <= 0 {
+		return
+	}
+	m.mu.Lock()
+	st := m.state
+	if !st.Connected || st.Split || st.FreqHz == hz {
+		m.mu.Unlock()
+		return
+	}
+	st.FreqHz = hz
+	st.Band = BandFromHz(hz)
+	st.UpdatedAt = time.Now()
+	m.state = st
+	m.mu.Unlock()
+	m.emitState()
 }
 
 // SetMode dispatches a SetMode call to the CAT goroutine.
 func (m *Manager) SetMode(mode string) error {
-	return m.exec(func(b Backend) error { return b.SetMode(mode) })
+	err := m.exec(func(b Backend) error { return b.SetMode(mode) })
+	if err == nil {
+		m.noteCommandedMode(mode)
+	}
+	return err
+}
+
+// noteCommandedMode is the mode half of noteCommandedFreq, and exists for the
+// same client readback.
+//
+// "DATA" is deliberately not published. A backend reports data mode under the
+// operator's own digital mode (FT8, JS8, RTTY…), and that name is what a QSO is
+// logged with — a plain "DATA" standing in for a poll cycle is a mode nobody
+// works, in a field that ends up in an ADIF file. The poll is a fraction of a
+// second away and knows the real name.
+func (m *Manager) noteCommandedMode(mode string) {
+	if mode == "" || strings.EqualFold(mode, "DATA") {
+		return
+	}
+	m.mu.Lock()
+	st := m.state
+	if !st.Connected || st.Mode == mode {
+		m.mu.Unlock()
+		return
+	}
+	st.Mode = mode
+	st.UpdatedAt = time.Now()
+	m.state = st
+	m.mu.Unlock()
+	m.emitState()
 }
 
 // SetPTT dispatches a transmit on/off request to the CAT goroutine.
@@ -256,6 +323,33 @@ func (m *Manager) SetPTT(on bool) error {
 	return m.exec(func(b Backend) error { return b.SetPTT(on) })
 }
 
+// dataPTTSetter is implemented by a backend that can key the DATA input rather
+// than the microphone. A Kenwood TS-590 has two transmit commands and takes its
+// audio from a different socket for each: TX (or TX0) opens the front mic, TX1
+// the rear ACC2/USB. Send the wrong one and the radio transmits in silence,
+// because the audio arriving on USB is simply not the input it is listening to.
+type dataPTTSetter interface {
+	SetPTTData(on bool) error
+}
+
+// SetPTTSource keys the transmitter, saying WHERE the audio is coming from.
+//
+// data=true means "the audio reaches the radio on its data/USB input" — what a
+// voice keyer playing through the rig's own sound card needs. A backend that
+// draws no distinction (every rig where one PTT is all there is) falls back to
+// the ordinary key, so nothing changes for it.
+func (m *Manager) SetPTTSource(on, data bool) error {
+	if !data {
+		return m.SetPTT(on)
+	}
+	return m.exec(func(b Backend) error {
+		if d, ok := b.(dataPTTSetter); ok {
+			return d.SetPTTData(on)
+		}
+		return b.SetPTT(on)
+	})
+}
+
 // splitSetter is implemented by the backends that can arm split AND place the
 // transmit frequency. Both together: arming without setting the dial transmits
 // on whatever the transmit VFO happened to hold, which is worse than refusing.
@@ -677,6 +771,10 @@ type IcomController interface {
 	SetVOXGain(int) error
 	SetAntiVOX(int) error
 	SetPower(bool) error // turn the transceiver on/off (manual — never auto on connect)
+	// RecallBandStack moves the VFO to what the radio's own band stacking
+	// register holds — the operator's last frequency and mode on that band.
+	// Returns the frequency landed on.
+	RecallBandStack(band, reg int) (int64, error)
 }
 
 // ScopeSweep is one complete spectrum-scope sweep reassembled from the Icom's
@@ -734,6 +832,50 @@ func (m *Manager) IcomDo(fn func(IcomController) error) error {
 	})
 }
 
+// SatTuner is a backend that can be put on a satellite: a receiver on one band
+// and a transmitter on another, both moving under Doppler, at the same time.
+//
+// It is a separate interface from the per-manufacturer ones because what a
+// satellite needs is not a manufacturer's feature — it is a shape of operating
+// that a FlexRadio and an IC-9700 both provide and reach in completely
+// different ways. A backend that cannot do it simply does not implement this,
+// and the caller falls back to tuning the downlink alone rather than pretending.
+type SatTuner interface {
+	// SetSatellite arms or disarms satellite operation: the rig's own satellite
+	// mode where it has one, two slices where it has those. Disarming must leave
+	// the radio somewhere an operator can work from, not half-configured.
+	SetSatellite(on bool) error
+	// TuneSatellite points the receiver at downHz and the transmitter at upHz,
+	// both already Doppler-corrected. Modes are ADIF names ("SSB", "FM", "CW");
+	// an empty one leaves that side's mode alone.
+	TuneSatellite(downHz, upHz int64, downMode, upMode string) error
+	// SatReceiveHz is where the receiver actually is. The operator tunes it to
+	// follow a station across a linear transponder, and that dial movement is
+	// the input the whole tracker works from — without reading it back, a
+	// tracker fights the operator instead of helping them.
+	SatReceiveHz() (int64, error)
+}
+
+// SatCapable reports whether the active backend can hold a satellite pair.
+func (m *Manager) SatCapable() bool {
+	m.mu.RLock()
+	b := m.backend
+	m.mu.RUnlock()
+	_, ok := b.(SatTuner)
+	return ok
+}
+
+// SatDo dispatches a satellite control onto the CAT goroutine.
+func (m *Manager) SatDo(fn func(SatTuner) error) error {
+	return m.exec(func(b Backend) error {
+		st, ok := b.(SatTuner)
+		if !ok {
+			return fmt.Errorf("this radio cannot hold a satellite pair from OpsLog")
+		}
+		return fn(st)
+	})
+}
+
 // exec marshals a backend operation onto the CAT goroutine. Returns the
 // operation's error or a "busy"/"not running" error if dispatch failed.
 func (m *Manager) exec(fn func(Backend) error) error {

internal/cat/civ/civ.go

@@ -49,6 +49,11 @@ const (
 	CmdScope  = 0x27 // spectrum-scope waveform stream (sub 0x00 = data, 0x11 = on/off)
 	CmdRIT    = 0x21 // RIT/ΔTX: sub 0x00 offset freq, 0x01 RIT on/off, 0x02 ΔTX(XIT) on/off
 	CmdSendCW = 0x17 // send a CW message (ASCII, ≤30 chars) via the rig's keyer; data 0xFF = stop
+	// CmdVFO selects which receiver subsequent commands address. On the two-band
+	// satellite rigs (IC-9700, IC-9100) the MAIN band is the downlink and the SUB
+	// band the uplink, so every satellite frequency set is "point at a band, then
+	// tune it".
+	CmdVFO = 0x07
 
 	SubLevelKeySpeed = 0x0C // CmdLevel: CW keying speed (0-255 → KeyMinWPM..KeyMaxWPM)
 
@@ -112,6 +117,17 @@ const (
 	SubSwBreakIn = 0x47 // CW break-in: 0=OFF, 1=SEMI, 2=FULL (needed so 0x17 CW keys TX)
 	SubSwMN      = 0x48 // manual notch on/off
 	SubSwAPF     = 0x32 // audio peak filter on/off (CW only)
+	// Satellite mode (IC-9700 / IC-9100). The rig's OWN satellite mode, not an
+	// imitation of one: it pairs main and sub, gives full duplex, and keeps the
+	// two dials linked the way the radio's designers meant. Asking it to do that
+	// is always better than building the same thing out of split.
+	SubSwSatellite = 0x5A
+
+	// CmdVFO sub-commands: which of a two-receiver rig's bands the next command
+	// addresses.
+	SubVFOMain     = 0xD0 // MAIN band — the downlink in satellite mode
+	SubVFOSub      = 0xD1 // SUB band — the uplink
+	SubVFOExchange = 0xB0 // swap main and sub
 )
 
 // CW break-in modes (CmdSwitch 0x47).
@@ -425,3 +441,49 @@ func indexPreamble(buf []byte, from int) int {
 	}
 	return -1
 }
+
+// ── Band stacking registers (CI-V 0x1A sub 0x01) ──────────────────────────
+//
+// Every modern Icom remembers the last few frequency/mode pairs used on each
+// band, and its front-panel band key walks through them. That is why pressing
+// [14] on the radio lands on the FT8 watering hole rather than on a number
+// somebody chose in software: the register is the operator's OWN last visit.
+//
+// The frame is a READ — it asks the rig what a register holds and changes
+// nothing — so a rig that does not know the command answers NG and the caller
+// is exactly where it started.
+//
+//	→ 1A 01 <band> <reg>
+//	← 1A 01 <band> <reg> <freq 5 BCD, LE> <mode> <filter> <data mode> …
+//
+// Anything past the data-mode byte (duplex, tone, DV squelch on the VHF rigs)
+// is not read here: the question is where the operator last was, and the answer
+// to that is the frequency and the mode.
+const SubBandStack = 0x01
+
+// BandStack is one register's contents.
+type BandStack struct {
+	FreqHz int64
+	Mode   byte
+	Data   bool // the data-mode flag that goes with Mode
+}
+
+// DecodeBandStack reads the payload of a 0x1A 0x01 reply, i.e. everything after
+// the command byte. ok is false for a frame that is not the register asked for,
+// which is what a desynchronised read looks like.
+func DecodeBandStack(data []byte, band, reg byte) (BandStack, bool) {
+	if len(data) < 9 || data[0] != SubBandStack || data[1] != band || data[2] != reg {
+		return BandStack{}, false
+	}
+	hz, ok := BCDToFreq(data[3:8])
+	if !ok || hz <= 0 {
+		return BandStack{}, false
+	}
+	bs := BandStack{FreqHz: hz, Mode: data[8]}
+	// Filter then data mode. A rig that stops at the filter byte is not an
+	// error — it is a register without a data flag, so the flag stays false.
+	if len(data) >= 11 {
+		bs.Data = data[10] != 0
+	}
+	return bs, true
+}

internal/cat/civ/civ_test.go

@@ -204,3 +204,36 @@ func TestBCDToFreqRejectsNonDecimal(t *testing.T) {
 		t.Error("a short but valid BCD frame must still decode")
 	}
 }
+
+// A band stacking register reply, byte for byte as the rigs send it:
+// 1A 01 <band> <reg> <freq 5 LE-BCD> <mode> <filter> <data>. The payload here
+// is everything after the command byte, which is what Decoded.Data holds.
+func TestDecodeBandStack(t *testing.T) {
+	// 14.074.000 MHz, USB, FIL1, data mode on — the FT8 stack on 20 m.
+	frame := []byte{0x01, 0x05, 0x03, 0x00, 0x40, 0x07, 0x14, 0x00, ModeUSB, 0x01, 0x01}
+	bs, ok := DecodeBandStack(frame, 0x05, 0x03)
+	if !ok {
+		t.Fatal("a well-formed register was rejected")
+	}
+	if bs.FreqHz != 14_074_000 {
+		t.Errorf("freq = %d, want 14074000", bs.FreqHz)
+	}
+	if bs.Mode != ModeUSB || !bs.Data {
+		t.Errorf("mode = 0x%02X data = %v, want USB + data", bs.Mode, bs.Data)
+	}
+	// The register ASKED FOR is part of the answer: a reply about another one is
+	// a desynchronised read, not a frequency to send the radio to.
+	if _, ok := DecodeBandStack(frame, 0x05, 0x01); ok {
+		t.Error("a reply for register 3 was accepted as register 1")
+	}
+	if _, ok := DecodeBandStack(frame, 0x03, 0x03); ok {
+		t.Error("a reply about 40 m was accepted as 20 m")
+	}
+	// A register without the data-mode byte is a shorter frame, not a bad one.
+	if bs, ok := DecodeBandStack(frame[:10], 0x05, 0x03); !ok || bs.FreqHz != 14_074_000 || bs.Data {
+		t.Errorf("short register = %+v ok=%v, want the frequency with no data flag", bs, ok)
+	}
+	if _, ok := DecodeBandStack([]byte{0x01, 0x05, 0x03}, 0x05, 0x03); ok {
+		t.Error("a truncated frame was accepted")
+	}
+}

internal/cat/flex.go

@@ -67,6 +67,14 @@ type Flex struct {
 	pendingSpot     map[int]string // seq → callsign, awaiting the spot index in the R response
 	pendingSpotMode map[int]string // seq → ADIF mode, paired with pendingSpot
 	pendingSplit    map[int]bool   // seq → awaiting the new TX slice's index (split create)
+	pendingSat      map[int]string // seq → "rx"/"tx", awaiting a satellite slice's index
+	// Satellite pair: slice A is the downlink, slice B the uplink. -1 when not
+	// armed. satCreatedTX marks an uplink slice OpsLog opened, and is the only
+	// one it will close again.
+	satOn        bool
+	satRX        int
+	satTX        int
+	satCreatedTX bool
 	spotCall        map[int]string // spot index → callsign (to fill the call on a panadapter click)
 	spotMode        map[int]string // spot index → ADIF mode, so a click can also set the slice mode (SmartSDR tunes the spot's freq but not its mode)
 	spotFreq        map[int]int64  // spot index → Hz, so a click can report where it was (the trigger message carries only the index)
@@ -227,7 +235,7 @@ func NewFlex(host string, port int, spotsEnabled bool) *Flex {
 	return &Flex{
 		host: strings.TrimSpace(host), port: port,
 		slices: map[int]*flexSlice{}, spotsEnabled: spotsEnabled,
-		spotIdx: map[int]bool{}, pendingSpot: map[int]string{}, pendingSpotMode: map[int]string{}, spotCall: map[int]string{}, spotMode: map[int]string{}, spotFreq: map[int]int64{}, pendingSpotFreq: map[int]int64{}, panWindow: map[string]panView{}, spotSig: map[string]string{}, spotSent: map[string]time.Time{}, spotByCall: map[string]int{}, pendingSplit: map[int]bool{},
+		spotIdx: map[int]bool{}, pendingSpot: map[int]string{}, pendingSpotMode: map[int]string{}, spotCall: map[int]string{}, spotMode: map[int]string{}, spotFreq: map[int]int64{}, pendingSpotFreq: map[int]int64{}, panWindow: map[string]panView{}, spotSig: map[string]string{}, spotSent: map[string]time.Time{}, spotByCall: map[string]int{}, pendingSplit: map[int]bool{}, pendingSat: map[int]string{}, satRX: -1, satTX: -1,
 		meterMeta: map[int]meterInfo{}, meterVal: map[int]float64{}, meterSub: map[int]bool{},
 		sentCmds: map[int]string{}, txSetAt: map[string]time.Time{},
 		pinnedSlice: -1,
@@ -458,12 +466,23 @@ func (f *Flex) reader(conn net.Conn) {
 			if splitSeq {
 				delete(f.pendingSplit, seq)
 			}
+			// The same reply carries the index of a slice created for a satellite
+			// pair; which of the two it is was recorded when it was asked for.
+			satRole := f.pendingSat[seq]
+			if satRole != "" {
+				delete(f.pendingSat, seq)
+			}
 			f.mu.Unlock()
 			if splitSeq && ok && len(parts) >= 3 {
 				if idx, e := strconv.Atoi(strings.TrimSpace(parts[2])); e == nil {
 					f.send(fmt.Sprintf("slice s %d tx=1", idx))
 				}
 			}
+			if satRole != "" && ok && len(parts) >= 3 {
+				if idx, e := strconv.Atoi(strings.TrimSpace(parts[2])); e == nil {
+					f.adoptSatSlice(satRole, idx)
+				}
+			}
 		}
 	}
 	// Connection ended.

internal/cat/flexsat.go

@@ -0,0 +1,202 @@
+package cat
+
+import (
+	"fmt"
+	"strings"
+
+	"hamlog/internal/applog"
+)
+
+// Satellite operation on a FlexRadio.
+//
+// A Flex has no satellite mode, and does not need one: it has slices. Slice A
+// is the downlink and slice B the uplink — the arrangement every Flex satellite
+// operator already uses by hand — with the transmitter on B and full duplex on,
+// so the operator hears their own signal come back through the transponder.
+// The transverters that put 145 and 435 MHz within the radio's reach are
+// configured in SmartSDR, and their offsets are the radio's business: OpsLog
+// sends the real satellite frequency and SmartSDR does the arithmetic.
+//
+// The two slices are CREATED when they are missing, because "slice B does not
+// exist" is not a thing to make the operator fix at the start of a ten-minute
+// pass. Only what OpsLog created is taken away again on disarming: a slice the
+// operator opened is theirs.
+
+// SetSatellite arranges (or unwinds) the two-slice satellite pair.
+func (f *Flex) SetSatellite(on bool) error {
+	f.mu.Lock()
+	connected := f.conn != nil
+	f.mu.Unlock()
+	if !connected {
+		return fmt.Errorf("flex: not connected")
+	}
+	if !on {
+		return f.satDisarm()
+	}
+
+	// The downlink slice is the one the operator is already on: taking the
+	// active slice rather than insisting on index 0 means arming the satellite
+	// does not move them off the receiver they were listening to.
+	f.mu.Lock()
+	rxIdx, _ := f.mainSliceLocked()
+	var txIdx = -1
+	for _, idx := range f.sortedSliceIdxLocked() {
+		if s := f.slices[idx]; s != nil && s.inUse && idx != rxIdx {
+			txIdx = idx
+			break
+		}
+	}
+	f.satRX, f.satTX = rxIdx, txIdx
+	f.satOn = true
+	f.mu.Unlock()
+
+	// Full duplex before anything else: without it the radio mutes the receiver
+	// on transmit, and an operator who cannot hear their own downlink has no way
+	// to know they are in the passband at all.
+	f.send("radio set full_duplex_enabled=1")
+
+	if rxIdx < 0 {
+		// A radio with no slice at all. One is created; the status that comes
+		// back adopts it as the downlink.
+		f.satCreate("rx", 145.900, "USB")
+	}
+	if txIdx < 0 {
+		f.satCreate("tx", 435.100, "USB")
+	} else {
+		f.send(fmt.Sprintf("slice s %d tx=1", txIdx))
+	}
+	applog.Printf("flex: satellite armed (rx slice %d, tx slice %d)", rxIdx, txIdx)
+	return nil
+}
+
+func (f *Flex) satDisarm() error {
+	f.mu.Lock()
+	rx, tx, created := f.satRX, f.satTX, f.satCreatedTX
+	f.satOn, f.satRX, f.satTX, f.satCreatedTX = false, -1, -1, false
+	f.mu.Unlock()
+
+	f.send("radio set full_duplex_enabled=0")
+	if created && tx >= 0 {
+		f.send(fmt.Sprintf("slice remove %d", tx))
+	}
+	// Transmit goes back where the operator is listening. A radio left
+	// transmitting on a slice that no longer exists — or on the uplink band with
+	// the satellite gone — is not somewhere anyone should be handed back.
+	if rx >= 0 {
+		f.send(fmt.Sprintf("slice s %d tx=1", rx))
+	}
+	applog.Printf("flex: satellite disarmed")
+	return nil
+}
+
+// satCreate asks for a slice and remembers what it is for; the index arrives in
+// the reply (see the R-line handler), which is where the role is applied.
+func (f *Flex) satCreate(role string, freqMHz float64, mode string) {
+	seq := f.send(fmt.Sprintf("slice create freq=%.6f mode=%s", freqMHz, mode))
+	if seq <= 0 {
+		return
+	}
+	f.mu.Lock()
+	if f.pendingSat == nil {
+		f.pendingSat = map[int]string{}
+	}
+	f.pendingSat[seq] = role
+	f.mu.Unlock()
+}
+
+// adoptSatSlice records a freshly created slice in its role. Called from the
+// reply handler with the index the radio assigned.
+func (f *Flex) adoptSatSlice(role string, idx int) {
+	f.mu.Lock()
+	switch role {
+	case "rx":
+		f.satRX = idx
+	case "tx":
+		f.satTX = idx
+		f.satCreatedTX = true
+	}
+	f.mu.Unlock()
+	if role == "tx" {
+		f.send(fmt.Sprintf("slice s %d tx=1", idx))
+	}
+	applog.Printf("flex: satellite %s slice is %d", role, idx)
+}
+
+// TuneSatellite moves the two slices.
+func (f *Flex) TuneSatellite(downHz, upHz int64, downMode, upMode string) error {
+	f.mu.Lock()
+	rx, tx := f.satRX, f.satTX
+	connected := f.conn != nil
+	if rx >= 0 && f.slices[rx] != nil && downHz > 0 {
+		f.slices[rx].freqHz = downHz // optimistic, as SetFrequency is
+	}
+	if tx >= 0 && f.slices[tx] != nil && upHz > 0 {
+		f.slices[tx].freqHz = upHz
+	}
+	f.mu.Unlock()
+	if !connected {
+		return fmt.Errorf("flex: not connected")
+	}
+	if rx < 0 {
+		// The slice was asked for and its index has not come back yet. Nothing is
+		// wrong — the next Doppler step, a second later, will find it.
+		return nil
+	}
+	if downHz > 0 {
+		f.send(fmt.Sprintf("slice t %d %.6f", rx, float64(downHz)/1e6))
+		f.satMode(rx, downMode, downHz)
+	}
+	if tx >= 0 && upHz > 0 {
+		f.send(fmt.Sprintf("slice t %d %.6f", tx, float64(upHz)/1e6))
+		f.satMode(tx, upMode, upHz)
+	}
+	return nil
+}
+
+// satMode sets a slice's mode only when it is not already there. A mode command
+// on every Doppler step is a command a second per slice for a whole pass, and
+// SmartSDR redraws the filter each time.
+func (f *Flex) satMode(idx int, mode string, freqHz int64) {
+	mode = strings.TrimSpace(mode)
+	if mode == "" {
+		return
+	}
+	// USB on both sides above 30 MHz, which is every satellite worth the name —
+	// including the parts of a passband that would be an LSB band down on HF.
+	if strings.EqualFold(mode, "SSB") && freqHz > 30_000_000 {
+		mode = "USB"
+	}
+	fm := adifModeToFlex(mode, freqHz)
+	if fm == "" {
+		return
+	}
+	f.mu.Lock()
+	s := f.slices[idx]
+	same := s != nil && strings.EqualFold(s.mode, fm)
+	if s != nil {
+		s.mode = fm
+	}
+	f.mu.Unlock()
+	if same {
+		return
+	}
+	f.send(fmt.Sprintf("slice s %d mode=%s", idx, fm))
+}
+
+// SatReceiveHz is where the downlink slice sits.
+//
+// From the cache, not from a read: SmartSDR pushes every slice change as it
+// happens, so the cached value is what the radio said, and there is no round
+// trip to pay for once a second.
+func (f *Flex) SatReceiveHz() (int64, error) {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	if f.satRX < 0 {
+		return 0, fmt.Errorf("flex: no downlink slice")
+	}
+	s := f.slices[f.satRX]
+	if s == nil || !s.inUse {
+		return 0, fmt.Errorf("flex: the downlink slice has gone")
+	}
+	return s.freqHz, nil
+}

internal/cat/icom_silence_test.go

@@ -60,3 +60,33 @@ func TestIcomSilenceBackoff(t *testing.T) {
 		t.Errorf("backoff overshot the ceiling: %s", g)
 	}
 }
+
+// A new session must not be judged on the previous one's silence.
+//
+// From an operator's log: a rig switched to standby, then a dial-and-drop loop
+// every forty seconds for as long as it was left there. lastGoodAt bounds "the
+// link answers but no CI-V comes back"; it belongs to a session, and it was
+// never cleared when a new one opened, so every fresh session started already
+// past the grace — and the Icom console, where the power-ON button lives,
+// blinked away on every pass.
+func TestAFreshSessionStartsWithACleanSilenceClock(t *testing.T) {
+	b := &IcomSerial{
+		lastGoodAt:  time.Now().Add(-30 * time.Minute), // a session from before standby
+		readFails:   9,
+		silentGrace: icomSilentGraceMax,
+	}
+	// What Connect does once the transport is open, before anything is sent.
+	b.lastGoodAt = time.Time{}
+	b.readFails = 0
+	b.silentGrace = icomSilentGrace
+
+	if !b.lastGoodAt.IsZero() {
+		t.Fatal("the previous session's last good read survived into this one")
+	}
+	tolerate := func(lastGood time.Time, silentFor, grace time.Duration) bool {
+		return lastGood.IsZero() || silentFor < grace
+	}
+	if !tolerate(b.lastGoodAt, time.Hour, b.silentGrace) {
+		t.Error("a session silent since connect was torn down — that is a rig in standby, and where the ON button has to work")
+	}
+}

internal/cat/icomaudio.go

@@ -67,12 +67,26 @@ type icomAudio struct {
 	txOuter uint16
 	txSend  uint16
 	lastRx  atomic.Int64 // UnixNano of last packet (liveness)
+	rxCount atomic.Int64 // packets delivered on this stream
 
 	done      chan struct{}
 	closeOnce sync.Once
 }
 
-func (a *icomAudio) markRx() { a.lastRx.Store(time.Now().UnixNano()) }
+func (a *icomAudio) markRx() {
+	a.lastRx.Store(time.Now().UnixNano())
+	a.rxCount.Add(1)
+}
+
+// packets reports whether the stream is actually delivering — the difference
+// between "audio is on" and "audio is arriving", which is what makes it worth
+// naming as a suspect when CI-V has gone quiet on the same session.
+func (a *icomAudio) packets() int64 {
+	if a == nil {
+		return 0
+	}
+	return a.rxCount.Load()
+}
 
 // Close tears the audio stream down (disconnect a few times; UDP is lossy).
 func (a *icomAudio) Close() {

internal/cat/icomnet.go

@@ -43,7 +43,7 @@ var icnBE = binary.BigEndian
 // = CI-V only (the proven default). The audio stream is fully separate from CAT,
 // so enabling it can't affect freq/mode/DSP control.
 func NewIcomNet(host, user, pass string, civAddr int, digitalDefault string, audioSink func([]byte)) *IcomSerial {
-	if civAddr <= 0 || civAddr > 0xFF {
+	if civAddr < 0 || civAddr > 0xFF {
 		civAddr = 0x98 // IC-7610
 	}
 	if digitalDefault == "" {
@@ -132,6 +132,13 @@ type icomNet struct {
 	// loop, not the rig — and RS-BA1 showing no such dropouts points that way.
 	txCiv    atomic.Uint32
 	txAtData atomic.Uint32
+	// WHAT was asked, not just how much. A rig that answers at connect and then
+	// never again has usually been sent something it does not like, and counting
+	// the unanswered commands says nothing about which one that was. The last few
+	// command headers are kept so the silence report can name them — the only way
+	// to find a poison command on a radio nobody here has.
+	cmdMu   sync.Mutex
+	lastCmd []string
 
 	rx      chan []byte // CI-V byte chunks from civPump → Read (control replies)
 	scopeRx chan []byte // scope (0x27) frames, kept off rx so the panadapter
@@ -268,6 +275,7 @@ func (n *icomNet) Write(p []byte) (int, error) {
 	n.vCivSeq++
 	n.seqMu.Unlock()
 	n.txCiv.Add(1)
+	n.noteCmd(p)
 	pkt := icnCivData(seq, n.vID, n.vRemote, civSeq, p)
 	n.sentMu.Lock()
 	n.sentBuf[seq] = pkt
@@ -280,6 +288,35 @@ func (n *icomNet) Write(p []byte) (int, error) {
 	return len(p), nil
 }
 
+// noteCmd remembers the command bytes of a CI-V frame — everything after the
+// preamble and the two addresses, up to four bytes, which is command,
+// sub-command and the first of the data.
+func (n *icomNet) noteCmd(p []byte) {
+	if len(p) < 5 {
+		return
+	}
+	body := p[4:]
+	if len(body) > 4 {
+		body = body[:4]
+	}
+	n.cmdMu.Lock()
+	n.lastCmd = append(n.lastCmd, fmt.Sprintf("% X", body))
+	if len(n.lastCmd) > 8 {
+		n.lastCmd = n.lastCmd[len(n.lastCmd)-8:]
+	}
+	n.cmdMu.Unlock()
+}
+
+// recentCmds is what noteCmd collected, oldest first.
+func (n *icomNet) recentCmds() string {
+	n.cmdMu.Lock()
+	defer n.cmdMu.Unlock()
+	if len(n.lastCmd) == 0 {
+		return "none"
+	}
+	return strings.Join(n.lastCmd, " | ")
+}
+
 // icnTrace toggles verbose per-frame CI-V request/reply logging for diagnosing
 // the network transport. Off by default (the connect-step logs stay); flip to
 // true to trace every TX/RX again.
@@ -496,6 +533,18 @@ func (n *icomNet) civPump() {
 			}
 			debugLog.Printf("icom net: no CI-V DATA for 10 s (transport last heard %s ago; last scope frame %s ago; last socket error: %v; missing-seq backlog: %d; CI-V commands SENT since the last answer: %d)",
 				time.Since(lastPkt).Round(time.Second), scopeAge, lastErr, len(n.rxMissing), n.txCiv.Load()-n.txAtData.Load())
+			debugLog.Printf("icom net: the last CI-V commands sent, oldest first: %s", n.recentCmds())
+			// THE AUDIO STREAM IS THE FIRST SUSPECT, AND ONLY THE LOG CAN SAY SO.
+			//
+			// The RX audio stream is experimental and shares the rig's session with
+			// CI-V. The shape seen in the field is exactly this one: audio packets
+			// arriving by the hundred while not one CI-V reply comes back, the
+			// watchdog tearing the session down, and the whole thing beginning
+			// again — a loop an operator reads as "the Icom keeps disconnecting",
+			// with nothing pointing at the switch that would end it.
+			if n.audio != nil && n.audio.packets() > 0 {
+				debugLog.Printf("icom net: the RX audio stream is running and still delivering while CI-V has gone quiet — that option is experimental and shares this session. If the drops continue, turn OFF \"Stream RX audio over the network\" in Settings → CAT and see whether control steadies.")
+			}
 			// And try the gentle repair before the 30 s watchdog tears the whole
 			// session down: if the rig quietly closed the CI-V data flow (the
 			// transport is still chatting, so the session itself stands), saying
@@ -808,20 +857,46 @@ func dialIcomNet(host, user, pass, compName string, rigAddr byte, cancel <-chan
 	n.vTracked++
 	n.vCivSeq++
 
-	go n.ctrlPump()
-	go n.civPump()
-
 	// Optional RX audio stream (50003). The rig was told (conninfo rxEnable=1) to
 	// stream audio; open the socket + handshake now. A failure here is NON-fatal:
 	// CAT works without audio, so we log and continue rather than tear down a
 	// perfectly good control/CI-V session.
+	//
+	// BEFORE the pumps start, because the conninfo below touches the control-
+	// stream auth state, and after ctrlPump is running that state belongs to it.
 	if wantAudio {
 		if a, err := dialIcomAudio(host, audioSink, cancel); err != nil {
 			debugLog.Printf("icom net: audio stream FAILED (CAT unaffected): %v", err)
 		} else {
 			n.audio = a
+			// AND THE CONNINFO AGAIN, NOW THAT SOMEBODY IS LISTENING ON 50003.
+			//
+			// The first one goes out during the login, before this socket exists —
+			// it has to, since it is what authorises the stream. So the rig is told
+			// to send audio to a port nothing is bound to yet, and what comes back
+			// is an ICMP port-unreachable; it then backs off, and the audio appears
+			// only when its own retry timer comes round. An operator timed that at
+			// twenty to thirty seconds of silence after switching the speakers on,
+			// and one log here shows a minute and a half.
+			//
+			// Re-sent once the port is open, so the rig starts streaming into a
+			// socket that is ready for it. Idempotent — the same message the session
+			// already carries, which is why RS-BA1 repeats it too.
+			pkt := icnConnInfo(n.cTracked, n.cAuthSeq, n.cTokReq, n.cID, n.cRemote, n.cToken, user, rigMAC, 50002, 50003, 0x01)
+			n.cSentBuf[n.cTracked] = pkt
+			n.cTracked++
+			n.cAuthSeq++
+			if _, err := ctrl.Write(pkt); err != nil {
+				debugLog.Printf("icom net: could not re-send the conninfo after opening the audio port: %v", err)
+			} else {
+				debugLog.Printf("icom net: conninfo re-sent now that :50003 is listening — the rig can start the audio at once")
 			}
 		}
+	}
+
+	go n.ctrlPump()
+	go n.civPump()
+
 	return n, nil
 }
 

internal/cat/icomsat.go

@@ -0,0 +1,181 @@
+package cat
+
+import (
+	"errors"
+	"fmt"
+	"strings"
+
+	"hamlog/internal/applog"
+	"hamlog/internal/cat/civ"
+)
+
+// Satellite operation on an Icom.
+//
+// Two rigs in the range have a satellite mode of their own — the IC-9700 and
+// the IC-9100 — and on those the right thing to do is ask the radio for it
+// rather than build an imitation out of split. Their satellite mode pairs the
+// MAIN band (the downlink) with the SUB band (the uplink), gives full duplex,
+// and keeps the two dials linked the way the designers meant. Every other Icom
+// has one receiver on one band: it can be tuned to the downlink, and that is
+// the whole truth about what it can do on a cross-band satellite.
+//
+// UNTESTED ON HARDWARE. Built from the IC-9700 CI-V reference: 0x16 0x5A arms
+// satellite mode, 0x07 0xD0 / 0xD1 select MAIN and SUB, and once a band is
+// selected the ordinary 0x05 / 0x06 tune it. If an IC-9700 owner reports it
+// misbehaving, the log lines below name every frame sent.
+
+// ErrSatUplinkUnreachable says the downlink was tuned and the uplink was not,
+// because the radio has no second receiver and the two are on different bands.
+//
+// A distinct error rather than a silent half-success: a tracker that quietly
+// stops transmitting where the operator expects it to is worse than one that
+// says it cannot. The caller reports it once, not once per Doppler step.
+var ErrSatUplinkUnreachable = errors.New("cat: this radio has one receiver — the uplink is on another band and cannot be set")
+
+// SetSatellite arms the rig's own satellite mode.
+func (b *IcomSerial) SetSatellite(on bool) error {
+	if !b.satNative {
+		// Nothing to arm and nothing to break: the tuning path below does what
+		// this radio can do without any mode change. Refusing here would deny an
+		// operator the downlink, which is most of the value on a receive-heavy
+		// pass.
+		b.satOn = on
+		return nil
+	}
+	if err := b.exec(civ.CmdSwitch, civ.SubSwSatellite, boolByte(on)); err != nil {
+		return fmt.Errorf("icom: satellite mode %v refused: %w", on, err)
+	}
+	b.satOn = on
+	applog.Printf("icom: satellite mode %v (%s)", on, b.model)
+	if on {
+		// Leave the radio pointing at MAIN. Everything else in OpsLog — the poll
+		// loop, the logged frequency, the operator's dial — reads the selected
+		// band, and on a satellite the band worth reading is the one carrying the
+		// downlink.
+		_ = b.exec(civ.CmdVFO, civ.SubVFOMain)
+	}
+	return nil
+}
+
+// TuneSatellite puts the receiver on downHz and the transmitter on upHz.
+func (b *IcomSerial) TuneSatellite(downHz, upHz int64, downMode, upMode string) error {
+	if downHz <= 0 {
+		return fmt.Errorf("icom: no downlink frequency")
+	}
+	if !b.satNative {
+		return b.tuneSatSingleBand(downHz, upHz, downMode, upMode)
+	}
+	// MAIN — the downlink.
+	if err := b.exec(civ.CmdVFO, civ.SubVFOMain); err != nil {
+		return fmt.Errorf("icom: could not select the main band: %w", err)
+	}
+	if err := b.SetFrequency(downHz); err != nil {
+		return err
+	}
+	if err := b.satSetMode(downMode, downHz); err != nil {
+		return err
+	}
+	// SUB — the uplink.
+	if upHz > 0 {
+		if err := b.exec(civ.CmdVFO, civ.SubVFOSub); err != nil {
+			return fmt.Errorf("icom: could not select the sub band: %w", err)
+		}
+		uerr := b.execIdempotent(fmt.Sprintf("set uplink %d Hz", upHz),
+			append([]byte{civ.CmdSetFreq}, civ.FreqToBCD(upHz)...)...)
+		merr := b.satSetMode(upMode, upHz)
+		// Back to MAIN whatever happened. A rig left pointing at SUB reports the
+		// uplink as its frequency, and every band-dependent thing in OpsLog —
+		// the log, the antenna, the amplifier — would follow the transmitter
+		// onto the wrong band.
+		if err := b.exec(civ.CmdVFO, civ.SubVFOMain); err != nil {
+			applog.Printf("icom: could not return to the main band: %v", err)
+		}
+		if uerr != nil {
+			return uerr
+		}
+		if merr != nil {
+			return merr
+		}
+	}
+	return nil
+}
+
+// satSetMode sets the mode of whichever band is currently selected. An empty
+// mode leaves it alone — a linear transponder is worked in one mode for a whole
+// pass, and re-sending it every second is traffic for nothing.
+func (b *IcomSerial) satSetMode(mode string, freqHz int64) error {
+	mode = strings.TrimSpace(mode)
+	if mode == "" {
+		return nil
+	}
+	// modeCode resolves "SSB" against the CURRENT dial to pick a sideband, which
+	// is wrong here twice over: the dial may still be on the other band, and on
+	// satellites USB is the convention on both sides whatever the frequency.
+	code, data, err := b.modeCode(satSideband(mode))
+	if err != nil {
+		return err
+	}
+	return b.setModeBytes(mode, code, data)
+}
+
+// satSideband is the sideband convention above 30 MHz: USB, on both the uplink
+// and the downlink, including the parts of a linear transponder that fall in
+// what would be an LSB band on HF. The exceptions — AO-7's mode A downlink on
+// 29 MHz among them — are still USB by convention, so there is no exception to
+// make.
+func satSideband(mode string) string {
+	if strings.EqualFold(strings.TrimSpace(mode), "SSB") {
+		return "USB"
+	}
+	return mode
+}
+
+// SatReceiveHz is where the receiver is now.
+func (b *IcomSerial) SatReceiveHz() (int64, error) {
+	if b.satNative {
+		// The selected band is MAIN — see TuneSatellite, which always returns to
+		// it — so the ordinary frequency read is the downlink.
+		if err := b.exec(civ.CmdVFO, civ.SubVFOMain); err != nil {
+			applog.Printf("icom: sat readback could not select main: %v", err)
+		}
+	}
+	return b.readFreq()
+}
+
+// tuneSatSingleBand is every other Icom: one receiver, one band.
+//
+// The downlink is set, because that is what the operator is listening to. The
+// uplink is set through split only when it is close enough to be on the same
+// band — QO-100 behind transverters, AO-7's mode A — and otherwise reported as
+// out of reach rather than quietly skipped.
+func (b *IcomSerial) tuneSatSingleBand(downHz, upHz int64, downMode, _ string) error {
+	if err := b.SetFrequency(downHz); err != nil {
+		return err
+	}
+	if err := b.satSetMode(downMode, downHz); err != nil {
+		return err
+	}
+	if upHz <= 0 {
+		return nil
+	}
+	// One megahertz apart is the working definition of "the same band" here: it
+	// covers a transponder's own passband and any sensible transverter pairing,
+	// and excludes every real cross-band satellite (145 / 435 MHz).
+	if abs64(upHz-downHz) > 1_000_000 {
+		return ErrSatUplinkUnreachable
+	}
+	if err := b.exec(append([]byte{civ.CmdVfoFreq, civ.SubVfoUnselected}, civ.FreqToBCD(upHz)...)...); err != nil {
+		return err
+	}
+	if !b.satOn {
+		return nil
+	}
+	return b.exec(civ.CmdSplit, boolByte(true))
+}
+
+func abs64(v int64) int64 {
+	if v < 0 {
+		return -v
+	}
+	return v
+}

internal/cat/icomserial.go

@@ -94,6 +94,13 @@ type IcomSerial struct {
 	// reassembled sweep; scopeMu guards it (written by the scope goroutine, read
 	// via ScopeData from the binding goroutine).
 	dualScope bool
+	// satNative marks the two-band satellite rigs — the IC-9700 and the IC-9100 —
+	// which have a real satellite mode of their own. Everything else gets the
+	// downlink and, where the uplink is reachable, split.
+	satNative bool
+	// satOn tracks what we last told the rig, so TuneSatellite can arm the mode
+	// once rather than on every Doppler step.
+	satOn bool
 	// Set when the rig rejects the waveform-output command in both shapes: it has
 	// no stream to give, and asking again on every enable is noise.
 	scopeUnsupported bool
@@ -172,12 +179,13 @@ const (
 )
 
 // NewIcomSerial builds an (unconnected) Icom serial backend. baud defaults to
-// 115200, rig address to the IC-7610's 0x98 when out of range.
+// 115200, rig address to the IC-7610's 0x98 when out of range — and 0x00 is in
+// range: it is a valid CI-V address that some rigs and interfaces are set to.
 func NewIcomSerial(portName string, baud, civAddr int, digitalDefault string) *IcomSerial {
 	if baud <= 0 {
 		baud = 115200
 	}
-	if civAddr <= 0 || civAddr > 0xFF {
+	if civAddr < 0 || civAddr > 0xFF {
 		civAddr = 0x98 // IC-7610
 	}
 	if digitalDefault == "" {
@@ -231,6 +239,21 @@ func (b *IcomSerial) Connect() error {
 	_ = port.SetRTS(false)
 	b.port = port
 	b.model = civ.ModelName(b.rigAddr)
+	// A NEW SESSION IS NOT JUDGED ON THE OLD ONE'S SILENCE.
+	//
+	// lastGoodAt bounds "the control link answers but no CI-V comes back". It
+	// belongs to a session, and it was never cleared when a new one opened —
+	// so a rig that went to standby half an hour ago handed every fresh session
+	// a half-hour-old "last good read", which is past the grace before the first
+	// command is even sent. The session was torn down at once, redialled twenty
+	// seconds later, and torn down again: a loop with no way out, and the Icom
+	// console (with its power-ON button) blinking away on every pass.
+	//
+	// Cleared, the rule reads as it was written: silent since connect is a rig in
+	// standby, and the session is kept so the operator can wake it.
+	b.lastGoodAt = time.Time{}
+	b.readFails = 0
+	b.silentGrace = icomSilentGrace
 
 	// Start the reader before any request: recv() now waits on respCh, which only
 	// the reader feeds. respCh is buffered so a burst (or the scope stream) never
@@ -268,6 +291,10 @@ func (b *IcomSerial) Connect() error {
 	// non-default address still RENDERS; this flag only drives the SET/read commands
 	// (mode, span, edges), which need the 0x00 selector to be accepted on the 7300.
 	b.dualScope = idAddr == 0x98 || idAddr == 0xA2 || idAddr == 0x94
+	// The satellite rigs: IC-9700 and IC-9100. Both carry two receivers on two
+	// bands and a satellite mode that pairs them; no other Icom in this table
+	// does, and asking one that does not is a rejected frame per Doppler step.
+	b.satNative = idAddr == 0xA2 || idAddr == 0x7C
 	// Silence any LEFTOVER waveform stream, BLIND, before anything else. The
 	// 0x27 output flag lives in the RADIO and survives sessions; its flood is
 	// what makes the IC-7760 stop answering CI-V — so waiting for CI-V to
@@ -594,6 +621,15 @@ func (b *IcomSerial) SetMode(mode string) error {
 	if err != nil {
 		return err
 	}
+	return b.setModeBytes(mode, code, data)
+}
+
+// setModeBytes is SetMode once the mode is already a CI-V byte and a data flag.
+// Split out for the band-stacking recall, which gets both FROM the radio and
+// must not go back through an ADIF name to reach them: a register holding CW-R
+// or LSB would come back as plain CW or as whatever the band convention says,
+// i.e. not the mode the operator left there.
+func (b *IcomSerial) setModeBytes(mode string, code byte, data bool) error {
 	// Set the base mode (keeping the rig's current filter by sending only the
 	// mode byte), then set the data-mode flag for digital modes.
 	if err := b.execIdempotent("set mode "+mode, civ.CmdSetMode, code); err != nil {
@@ -2188,3 +2224,59 @@ func (b *IcomSerial) TXAudioSender() (func([]byte) error, error) {
 	}
 	return nil, fmt.Errorf("this rig takes transmit audio through its USB sound card, not the CAT link")
 }
+
+// ── Band stacking registers ───────────────────────────────────────────────
+
+// RecallBandStack puts the VFO where the operator last was on a band, by asking
+// the radio rather than by holding an opinion about it.
+//
+// The console's band buttons used to send a frequency chosen in software — a
+// reasonable middle-of-the-band number, and never where anybody actually
+// operates. The radio already knows better: every band key press it has ever
+// had is remembered in that band's stacking registers, so register 1 is the
+// last place used on that band, and cycling through 2 and 3 walks back through
+// the ones before it — CW where CW was worked, and the FT8 frequency where FT8
+// was worked, without either being written down anywhere.
+//
+// Reads the register, then sets frequency and mode from it. Returns the
+// frequency it landed on, so the caller can say where it went; a register the
+// rig will not read leaves the radio untouched and returns an error, which is
+// what makes the caller's fallback to a plain frequency safe.
+func (b *IcomSerial) RecallBandStack(band, reg int) (int64, error) {
+	if b.port == nil {
+		return 0, fmt.Errorf("not connected")
+	}
+	if band <= 0 || reg < 1 || reg > 3 {
+		return 0, fmt.Errorf("icom: band stack %d/%d is not a register", band, reg)
+	}
+	bb, rb := civ.ByteToBCD(band), civ.ByteToBCD(reg)
+	if err := b.write(civ.CmdExtra, civ.SubBandStack, bb, rb); err != nil {
+		return 0, err
+	}
+	f, err := b.recv(icomReadTimeout, func(d civ.Decoded) bool {
+		return d.Cmd == civ.CmdExtra && len(d.Data) >= 2 && d.Data[0] == civ.SubBandStack
+	})
+	if err != nil {
+		return 0, err
+	}
+	bs, ok := civ.DecodeBandStack(f.Data, bb, rb)
+	if !ok {
+		// Logged with the raw frame: the register layout has a tail that differs
+		// between models, and a rig that answers something we cannot read is the
+		// one thing worth seeing here.
+		applog.Printf("icom: band stack %d/%d — cannot read the register from % X", band, reg, f.Data)
+		return 0, fmt.Errorf("icom: band stacking register %d/%d not understood", band, reg)
+	}
+	if err := b.SetFrequency(bs.FreqHz); err != nil {
+		return 0, err
+	}
+	// The mode is best-effort. Landing on the right frequency in the wrong mode
+	// is a nuisance; refusing the whole recall over it would send the operator
+	// back to a button that does less.
+	if bs.Mode != 0 {
+		if err := b.setModeBytes(civ.ModeToADIF(bs.Mode, bs.Data), bs.Mode, bs.Data); err != nil {
+			applog.Printf("icom: band stack %d/%d — frequency set, mode 0x%02X refused: %v", band, reg, bs.Mode, err)
+		}
+	}
+	return bs.FreqHz, nil
+}

internal/cat/kenwood.go

@@ -632,6 +632,28 @@ func (k *Kenwood) SetPTT(on bool) error {
 	return k.write("RX;")
 }
 
+// SetPTTData keys the transmitter on the DATA input: TX1 on a TS-590, which is
+// ACC2/USB rather than the front microphone. The radio's own manual is explicit
+// that the parameter chooses the input — "0: SEND (normal transmission using
+// the MIC input), 1: DATA SEND (ACC2/USB input)" — so a voice keyer playing
+// into the rig's USB codec has to say TX1 or it transmits dead air while the
+// radio listens to a microphone nobody is speaking into.
+//
+// Unkeying is the same RX either way; there is no data-flavoured stop.
+func (k *Kenwood) SetPTTData(on bool) error {
+	k.mu.Lock()
+	defer k.mu.Unlock()
+	if k.port == nil {
+		return fmt.Errorf("kenwood: not connected")
+	}
+	k.tx = on
+	if on {
+		k.txAt = time.Now()
+		return k.write("TX1;")
+	}
+	return k.write("RX;")
+}
+
 func (k *Kenwood) write(cmd string) error {
 	if k.port == nil {
 		return fmt.Errorf("kenwood: not connected")

internal/cat/yaesu.go

@@ -59,6 +59,13 @@ var yaesuModels = map[string]string{
 	"0650": "FT-891",
 	"0670": "FT-DX3000",
 	"0460": "FT-450D",
+	// The eight-digit family. Named for the console; the frequency format is
+	// learned from the rig either way (see learnFreqWidth).
+	"0251": "FT-2000",
+	"0310": "FT-950",
+	"0583": "FTDX1200",
+	"0462": "FTDX3000",
+	"0101": "FTDX5000",
 }
 
 // yaesuModeToADIF maps the MD digit to an ADIF mode. The DATA and RTTY variants
@@ -100,6 +107,11 @@ type Yaesu struct {
 	// rxVFOCmd is "FR" when the rig reports its receive VFO that way, else empty
 	// and VS is used — see ReadState.
 	rxVFOCmd string
+	// freqDigits is how many digits this rig writes a frequency in, LEARNED from
+	// its own replies. See learnFreqWidth.
+	freqDigits int
+	// rttyUpper picks RTTY-U over RTTY-L — see SetRTTYUpper.
+	rttyUpper bool
 
 	curFreq   int64
 	curRXFreq int64
@@ -130,6 +142,18 @@ func NewYaesu(portName string, baud int, digital string) *Yaesu {
 	return &Yaesu{portName: strings.TrimSpace(portName), baud: baud, digital: digital, curVFO: "A"}
 }
 
+// SetRTTYUpper chooses which sideband RTTY is set on.
+//
+// Yaesu has both — MD06 is RTTY-L, MD09 is RTTY-U — and ADIF has neither: it
+// says "RTTY" and stops there, so the rig cannot be driven from the logged mode
+// alone. LSB is the older convention and stays the default; an operator whose
+// FSK controller or decoder wants the other one says so once here.
+func (y *Yaesu) SetRTTYUpper(v bool) {
+	y.mu.Lock()
+	defer y.mu.Unlock()
+	y.rttyUpper = v
+}
+
 // SetLowerLines chooses whether DTR and RTS are deasserted on connect. Set
 // before Connect.
 func (y *Yaesu) SetLowerLines(v bool) {
@@ -275,6 +299,7 @@ func (y *Yaesu) ReadState() (RigState, error) {
 	if err != nil {
 		return RigState{}, err // the rig stopped answering — let the Manager reconnect
 	}
+	y.learnFreqWidth(faRaw, "FA")
 	freqA, ok := parseYaesuFreq(faRaw, "FA")
 	if !ok {
 		return RigState{}, fmt.Errorf("yaesu: unparsable FA reply %q", faRaw)
@@ -355,7 +380,7 @@ func (y *Yaesu) SetFrequency(hz int64) error {
 	if y.curVFO == "B" {
 		cmd = "FB"
 	}
-	return y.write(fmt.Sprintf("%s%09d;", cmd, hz))
+	return y.write(fmt.Sprintf("%s%0*d;", cmd, y.freqWidth(), hz))
 }
 
 func (y *Yaesu) SetMode(mode string) error {
@@ -364,7 +389,7 @@ func (y *Yaesu) SetMode(mode string) error {
 	if y.port == nil {
 		return fmt.Errorf("yaesu: not connected")
 	}
-	d := yaesuModeDigit(mode, y.curFreq)
+	d := yaesuModeDigit(mode, y.curFreq, y.rttyUpper)
 	if d == 0 {
 		return fmt.Errorf("yaesu: no CAT mode for %q", mode)
 	}
@@ -481,7 +506,53 @@ func cmdPrefix(cmd string) string {
 	return c
 }
 
-// parseYaesuFreq reads "FA014074000;" into Hz.
+// EIGHT DIGITS OR NINE — the rig says which, and it is not a matter of taste.
+//
+// The FTDX10, FT-991A, FT-891 and FT-710 write a frequency in nine digits;
+// everything before them — FTDX3000, FTDX5000, FTDX1200, FT-2000, FT-950,
+// FT-450 — writes eight, and answers a nine-digit SET with "?;". An operator
+// with an FTDX3000 saw exactly that: every FA command rejected, a radio that
+// would not follow, and nothing to say why.
+//
+// The width is LEARNED rather than tabulated: the rig announces it in every
+// reply to "FA;", so the answer comes from the radio in front of the operator
+// instead of from a list of models that will always be one release behind. Nine
+// until the first reply lands, which is what the modern rigs use and what this
+// backend was written against.
+const yaesuFreqDigitsDefault = 9
+
+func (y *Yaesu) freqWidth() int {
+	if y.freqDigits >= 8 && y.freqDigits <= 11 {
+		return y.freqDigits
+	}
+	return yaesuFreqDigitsDefault
+}
+
+// learnFreqWidth takes the width from a frequency reply. Only a reply that
+// parses as a frequency teaches anything — a "?;" or a stray frame says nothing
+// about the format, and a width learned from one would be worse than the
+// default.
+func (y *Yaesu) learnFreqWidth(reply, prefix string) {
+	r := strings.TrimSpace(reply)
+	if !strings.HasPrefix(r, prefix) {
+		return
+	}
+	digits := strings.TrimSuffix(strings.TrimPrefix(r, prefix), ";")
+	if len(digits) < 8 || len(digits) > 11 {
+		return
+	}
+	for _, c := range digits {
+		if c < '0' || c > '9' {
+			return
+		}
+	}
+	if y.freqDigits != len(digits) {
+		debugLog.Printf("yaesu: this rig writes frequencies in %d digits — commands will match", len(digits))
+		y.freqDigits = len(digits)
+	}
+}
+
+// parseYaesuFreq reads "FA014074000;" (or "FA14074000;") into Hz.
 func parseYaesuFreq(reply, prefix string) (int64, bool) {
 	r := strings.TrimSpace(reply)
 	if !strings.HasPrefix(r, prefix) {
@@ -551,7 +622,7 @@ func resolveYaesuVFOs(freqA, freqB int64, vfo string, split bool) (tx, rx int64,
 // yaesuModeDigit maps an ADIF mode to the MD digit. SSB has no single digit —
 // the sideband follows the worldwide convention (LSB below 10 MHz, USB above),
 // which is why the current frequency is part of the decision.
-func yaesuModeDigit(mode string, freqHz int64) byte {
+func yaesuModeDigit(mode string, freqHz int64, rttyUpper bool) byte {
 	switch strings.ToUpper(strings.TrimSpace(mode)) {
 	case "SSB":
 		if freqHz > 0 && freqHz < 10_000_000 {
@@ -569,7 +640,10 @@ func yaesuModeDigit(mode string, freqHz int64) byte {
 	case "AM":
 		return '5'
 	case "RTTY":
-		return '6'
+		if rttyUpper {
+			return '9' // RTTY-U
+		}
+		return '6' // RTTY-L, the older convention
 	case "":
 		return 0
 	default:

internal/cat/yaesu_freqwidth_test.go

@@ -0,0 +1,38 @@
+package cat
+
+import "testing"
+
+// The FTDX10 family writes a frequency in nine digits; everything before it —
+// FTDX3000, FTDX5000, FTDX1200, FT-2000, FT-950, FT-450 — writes eight and
+// answers a nine-digit SET with "?;". Reported from an FTDX3000: every FA
+// command rejected, a radio that would not follow.
+//
+// The width is taken from the rig's own reply, so a model this backend has
+// never heard of is right on the first read.
+func TestYaesuFrequencyWidthIsLearnedFromTheRig(t *testing.T) {
+	y := &Yaesu{}
+	if got := y.freqWidth(); got != 9 {
+		t.Errorf("before any reply the width is %d, want the modern 9", got)
+	}
+
+	y.learnFreqWidth("FA14074000;", "FA") // an FTDX3000
+	if got := y.freqWidth(); got != 8 {
+		t.Errorf("width %d after an eight-digit reply, want 8", got)
+	}
+
+	y.learnFreqWidth("FA014074000;", "FA") // and an FTDX10 on the next session
+	if got := y.freqWidth(); got != 9 {
+		t.Errorf("width %d after a nine-digit reply, want 9", got)
+	}
+
+	// Nothing that is not a frequency teaches anything: a rejection, a stray
+	// frame or a reply from another command would otherwise set the format for
+	// every command that follows.
+	for _, junk := range []string{"?;", "FA;", "FB014074000;", "FA1407400X;", "FA1234567;", "FA123456789012;"} {
+		before := y.freqWidth()
+		y.learnFreqWidth(junk, "FA")
+		if after := y.freqWidth(); after != before {
+			t.Errorf("%q changed the width from %d to %d", junk, before, after)
+		}
+	}
+}

internal/cat/yaesu_panel.go

@@ -84,6 +84,11 @@ type YaesuTXState struct {
 // same shape as FlexController and IcomController.
 type YaesuController interface {
 	YaesuState() YaesuTXState
+	// SetRTTYUpper is a preference, not a command — see Yaesu.SetRTTYUpper. It
+	// belongs here so a change of mind reaches the RUNNING rig: the link is not
+	// rebuilt for it, and until it was reachable this way the setting only took
+	// effect on the next launch.
+	SetRTTYUpper(bool)
 	RefreshYaesu() error
 	SetYaesuPower(int) error
 	SetYaesuMicGain(int) error
@@ -388,7 +393,14 @@ func (y *Yaesu) RefreshYaesu() error {
 }
 
 func (y *Yaesu) SetYaesuPower(w int) error {
-	return y.setAndRefresh(fmt.Sprintf("PC%03d;", clampInt(w, 5, 100)))
+	// The SAME ceiling the console draws its slider to. It was hard-coded at 100
+	// here while yaesuMaxPower already answered 200 for an FTDX101MP: asking for
+	// 200 W sent PC100, the rig obeyed, and the slider sprang back to 100 on the
+	// next poll — which is how the operator discovered it.
+	y.mu.Lock()
+	max := yaesuMaxPower(y.model, y.panel.RFPower)
+	y.mu.Unlock()
+	return y.setAndRefresh(fmt.Sprintf("PC%03d;", clampInt(w, 5, max)))
 }
 
 func (y *Yaesu) SetYaesuMicGain(p int) error {

internal/cat/yaesu_power_test.go

@@ -0,0 +1,29 @@
+package cat
+
+import "testing"
+
+// Reported on an FTDX101MP: the power slider sprang back to 100 W. The console
+// already knew the rig could do 200 — yaesuMaxPower says so — but the SET path
+// clamped to 100, so the radio was politely given half what was asked for.
+func TestYaesuPowerCeilingFollowsTheModel(t *testing.T) {
+	cases := []struct {
+		model string
+		want  int
+	}{
+		{"FTDX101MP", 200},
+		{"FT-DX5000", 200},
+		{"FTDX9000", 200},
+		{"FTDX101D", 100},
+		{"FTDX10", 100},
+		{"Yaesu (0999)", 100}, // unknown: ask for too little, never too much
+	}
+	for _, c := range cases {
+		if got := yaesuMaxPower(c.model, 0); got != c.want {
+			t.Errorf("%s ceiling = %d W, want %d", c.model, got, c.want)
+		}
+	}
+	// A rig REPORTING more than the table expects has just proved what it can do.
+	if got := yaesuMaxPower("FTDX10", 150); got != 150 {
+		t.Errorf("a rig reporting 150 W was capped at %d", got)
+	}
+}

internal/cat/yaesu_test.go

@@ -123,7 +123,7 @@ func TestYaesuModeDigit(t *testing.T) {
 		{"", 14074000, 0},      // nothing to set
 	}
 	for _, c := range cases {
-		if got := yaesuModeDigit(c.mode, c.hz); got != c.want {
+		if got := yaesuModeDigit(c.mode, c.hz, false); got != c.want {
 			t.Errorf("yaesuModeDigit(%q, %d) = %q, want %q", c.mode, c.hz, got, c.want)
 		}
 	}
@@ -406,3 +406,38 @@ func TestYaesuAntennaCommand(t *testing.T) {
 		}
 	}
 }
+
+// ADIF says "RTTY" and stops there, but Yaesu has both sidebands and the rig
+// has to be told one. LSB is the older convention and the default; the other is
+// a station's own choice, made once.
+func TestYaesuRTTYSideband(t *testing.T) {
+	if got := yaesuModeDigit("RTTY", 14_080_000, false); got != '6' {
+		t.Errorf("RTTY = %q, want RTTY-L", got)
+	}
+	if got := yaesuModeDigit("RTTY", 14_080_000, true); got != '9' {
+		t.Errorf("RTTY (upper) = %q, want RTTY-U", got)
+	}
+	// The switch is about RTTY and nothing else.
+	if got := yaesuModeDigit("FT8", 28_074_000, true); got != 'C' {
+		t.Errorf("FT8 = %q, want DATA-U", got)
+	}
+	if got := yaesuModeDigit("CW", 14_030_000, true); got != '3' {
+		t.Errorf("CW = %q, want CW-U", got)
+	}
+}
+
+// The RTTY sideband is a preference the LINK does not depend on, so it is not
+// in catLinkSig and the link is not rebuilt for it — which means the running
+// client has to accept it. It did not, and the setting waited for the next
+// launch while the rig went on choosing LSB.
+func TestYaesuAcceptsTheRTTYSidebandWhileConnected(t *testing.T) {
+	var y YaesuController = &Yaesu{}
+	y.SetRTTYUpper(true)
+	if got := y.(*Yaesu).rttyUpper; !got {
+		t.Error("a running Yaesu ignored the RTTY sideband")
+	}
+	y.SetRTTYUpper(false)
+	if got := y.(*Yaesu).rttyUpper; got {
+		t.Error("it could not be turned back")
+	}
+}

internal/dxcc/dxcc.go

@@ -40,6 +40,14 @@ type Match struct {
 	Continent string  `json:"continent"`
 	Lat       float64 `json:"lat"`
 	Lon       float64 `json:"lon"`
+	// Exact marks a hit on cty.dat's "=CALLSIGN" list rather than on a prefix.
+	//
+	// The two carry very different authority. A prefix match is a rule of thumb
+	// about a block of callsigns; an exact entry is somebody having looked at
+	// THIS callsign and written down where it was. A second country file may
+	// improve on the first kind and should not be allowed to overrule the
+	// second.
+	Exact bool `json:"exact,omitempty"`
 }
 
 type prefixEntry struct {
@@ -149,7 +157,9 @@ func (db *DB) Lookup(callsign string) (Match, bool) {
 		return Match{}, false
 	}
 	if e, ok := db.exact[call]; ok {
-		return materialize(e), true
+		m := materialize(e)
+		m.Exact = true
+		return m, true
 	}
 	// KG4 special case: Guantanamo Bay (DXCC 105) is "KG4" followed by EXACTLY
 	// two characters (KG4XX). "KG4", "KG4X", "KG4XYZ"… are continental USA.

internal/extsvc/configured.go

@@ -0,0 +1,79 @@
+package extsvc
+
+import (
+	"fmt"
+	"strings"
+)
+
+// Configured reports what a service still needs before it can be uploaded to.
+//
+// It exists so the answer lives NEXT TO THE UPLOADERS that enforce it. Written
+// once in the app instead, it drifted immediately: Club Log was refused for a
+// missing API key, which nobody has ever set — OpsLog carries its own
+// application key (see clublogAppAPIKey) and the account is an email, a password
+// and the logbook callsign. An operator whose live upload had been working for
+// months was told his service was not configured.
+//
+// Each case mirrors the guard at the top of the matching Upload* function. It
+// answers "can this be attempted", not "are these credentials right": only the
+// service can say that, and it says it by refusing the upload.
+func Configured(svc Service, cfg ExternalServices) error {
+	missing := func(service string, fields ...string) error {
+		return fmt.Errorf("%s is not configured — %s", service, strings.Join(fields, ", "))
+	}
+	set := func(v string) bool { return strings.TrimSpace(v) != "" }
+	var need []string
+	add := func(ok bool, what string) {
+		if !ok {
+			need = append(need, what)
+		}
+	}
+
+	switch svc {
+	case ServiceQRZ:
+		add(set(cfg.QRZ.APIKey), "the logbook API key")
+		if len(need) > 0 {
+			return missing("QRZ.com", need...)
+		}
+	case ServiceClublog:
+		// No API key: OpsLog's own application key is embedded.
+		add(set(cfg.Clublog.Email), "the account email")
+		add(set(cfg.Clublog.Password), "the password")
+		add(set(cfg.Clublog.Callsign), "the logbook callsign")
+		if len(need) > 0 {
+			return missing("Club Log", need...)
+		}
+	case ServiceHRDLog:
+		add(set(cfg.HRDLog.Callsign), "the station callsign")
+		add(set(cfg.HRDLog.Code), "the upload code")
+		if len(need) > 0 {
+			return missing("HRDLog.net", need...)
+		}
+	case ServiceEQSL:
+		add(set(cfg.EQSL.Username), "the username (callsign)")
+		add(set(cfg.EQSL.Password), "the password")
+		if len(need) > 0 {
+			return missing("eQSL.cc", need...)
+		}
+	case ServiceHamQTH:
+		add(set(cfg.HamQTH.Username), "the username")
+		add(set(cfg.HamQTH.Password), "the password")
+		if len(need) > 0 {
+			return missing("HamQTH", need...)
+		}
+	case ServiceCloudlog:
+		add(set(cfg.Cloudlog.URL), "the instance URL")
+		add(set(cfg.Cloudlog.APIKey), "the API key")
+		add(set(cfg.Cloudlog.StationID), "the station profile")
+		if len(need) > 0 {
+			return missing("Cloudlog / Wavelog", need...)
+		}
+	case ServiceLoTW:
+		add(set(cfg.LoTW.TQSLPath), "the path to tqsl.exe")
+		add(set(cfg.LoTW.StationLocation), "the TQSL station location")
+		if len(need) > 0 {
+			return missing("LoTW", need...)
+		}
+	}
+	return nil
+}

internal/extsvc/hamlog.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"context"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"io"
 	"net/http"
@@ -104,7 +105,26 @@ func UploadHamlog(ctx context.Context, client *http.Client, cfg ServiceConfig, a
 	return uploadHamlogTo(ctx, client, hamlogAPIEndpoint, cfg, adifRecord)
 }
 
+// ErrHamlogClosed is why nothing is sent to HAMLOG.online any more.
+//
+// The site stopped issuing API keys, and the upload API takes nothing else. An
+// operator without a key cannot obtain one, and one WITH an old key is the
+// exception this cannot be built around — so the door is closed here rather
+// than left ajar for a request that can only fail.
+//
+// The code stays: their confirmations still arrive as an ADIF FILE (QSL Manager
+// → HAMLOG.online → Import confirmations), which never needed a key, and the
+// sent/received state already in operators' logs stays readable, filterable and
+// bulk-editable.
+var ErrHamlogClosed = errors.New("hamlog: HAMLOG.online no longer issues API keys, so uploading is not possible — their confirmations can still be imported from a file")
+
 func uploadHamlogTo(ctx context.Context, client *http.Client, endpoint string, cfg ServiceConfig, adifRecord string) (UploadResult, error) {
+	return UploadResult{}, ErrHamlogClosed
+}
+
+// uploadHamlogLive is the upload as it was, kept whole against the day keys
+// come back. Nothing calls it.
+func uploadHamlogLive(ctx context.Context, client *http.Client, endpoint string, cfg ServiceConfig, adifRecord string) (UploadResult, error) {
 	key := strings.TrimSpace(cfg.APIKey)
 	if key == "" {
 		return UploadResult{}, fmt.Errorf("hamlog: API key not set — get one at %s", hamlogKeyPage)

internal/extsvc/hamlog_test.go

@@ -3,6 +3,7 @@ package extsvc
 import (
 	"context"
 	"encoding/json"
+	"errors"
 	"io"
 	"net/http"
 	"net/http/httptest"
@@ -28,7 +29,7 @@ func TestUploadHamlogRequestShape(t *testing.T) {
 	}))
 	defer srv.Close()
 
-	res, err := uploadHamlogTo(context.Background(), nil, srv.URL, ServiceConfig{APIKey: "KEY123"}, "<call:5>F4BPO <eor>")
+	res, err := uploadHamlogLive(context.Background(), nil, srv.URL, ServiceConfig{APIKey: "KEY123"}, "<call:5>F4BPO <eor>")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -64,7 +65,7 @@ func TestHamlogFailureIsNotSuccess(t *testing.T) {
 		srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			_, _ = w.Write([]byte(tc.body))
 		}))
-		res, err := uploadHamlogTo(context.Background(), nil, srv.URL, ServiceConfig{APIKey: "K"}, "<eor>")
+		res, err := uploadHamlogLive(context.Background(), nil, srv.URL, ServiceConfig{APIKey: "K"}, "<eor>")
 		srv.Close()
 		if err != nil {
 			t.Fatalf("%s: %v", tc.body, err)
@@ -80,8 +81,21 @@ func TestHamlogFailureIsNotSuccess(t *testing.T) {
 
 // Nothing leaves without a key, and the message says where to get one.
 func TestUploadHamlogNeedsAKey(t *testing.T) {
-	_, err := UploadHamlog(context.Background(), nil, ServiceConfig{}, "<eor>")
+	_, err := uploadHamlogLive(context.Background(), nil, "http://example.invalid", ServiceConfig{}, "<eor>")
 	if err == nil || !strings.Contains(err.Error(), hamlogKeyPage) {
 		t.Fatalf("err = %v, want it to point at %s", err, hamlogKeyPage)
 	}
 }
+
+// The door is shut: HAMLOG.online stopped issuing API keys, so an upload that
+// could only fail is refused before it is attempted. The request-shape tests
+// above still cover the code kept against the day keys come back.
+func TestUploadHamlogIsClosed(t *testing.T) {
+	res, err := UploadHamlog(context.Background(), nil, ServiceConfig{APIKey: "KEY123"}, "<eor>")
+	if !errors.Is(err, ErrHamlogClosed) {
+		t.Fatalf("err = %v, want ErrHamlogClosed", err)
+	}
+	if res.OK {
+		t.Error("a refused upload reported success")
+	}
+}

internal/extsvc/manager.go

@@ -87,6 +87,7 @@ type Manager struct {
 	mu               sync.Mutex
 	cfg              ExternalServices
 	rnd              *rand.Rand
+	hamlogClosedOnce sync.Once
 }
 
 // maxUploadAttempts bounds retries of a transient upload failure.
@@ -230,13 +231,13 @@ func (m *Manager) OnQSOLogged(id int64) {
 			m.route(ServiceCloudlog, id, c)
 		}
 	}
-	// HAMLOG.online — one API key and nothing else to get wrong.
-	if h := cfg.Hamlog; h.AutoUpload {
-		if h.APIKey == "" {
-			m.logf("extsvc: hamlog auto-upload is ON but no API key is set (QSO %d not sent)", id)
-		} else {
-			m.route(ServiceHamlog, id, h)
-		}
+	// HAMLOG.online is closed to uploads — see ErrHamlogClosed. Said once per
+	// session rather than per QSO, because an operator who left the switch on
+	// deserves to know why nothing leaves, and does not deserve it every minute.
+	if cfg.Hamlog.AutoUpload {
+		m.hamlogClosedOnce.Do(func() {
+			m.logf("extsvc: %v", ErrHamlogClosed)
+		})
 	}
 	// HamQTH — the callbook credentials double as the logbook login.
 	if h := cfg.HamQTH; h.AutoUpload {
@@ -296,9 +297,7 @@ func (m *Manager) onCloseServices() []Service {
 	if c := cfg.Cloudlog; c.AutoUpload && c.UploadMode == ModeOnClose && c.URL != "" && c.APIKey != "" && c.StationID != "" {
 		out = append(out, ServiceCloudlog)
 	}
-	if h := cfg.Hamlog; h.AutoUpload && h.UploadMode == ModeOnClose && h.APIKey != "" {
-		out = append(out, ServiceHamlog)
-	}
+
 	if h := cfg.HamQTH; h.AutoUpload && h.UploadMode == ModeOnClose && h.Username != "" && h.Password != "" {
 		out = append(out, ServiceHamQTH)
 	}
@@ -348,8 +347,7 @@ func (m *Manager) FlushOnClose() int {
 			uploaded += m.flushOneByOne(svc, ids, cfg.HRDLog)
 		case ServiceCloudlog:
 			uploaded += m.flushOneByOne(svc, ids, cfg.Cloudlog)
-		case ServiceHamlog:
-			uploaded += m.flushOneByOne(svc, ids, cfg.Hamlog)
+
 		case ServiceHamQTH:
 			uploaded += m.flushOneByOne(svc, ids, cfg.HamQTH)
 		}

internal/geo/geo.go

@@ -11,6 +11,7 @@ package geo
 
 import (
 	"math"
+	"sort"
 	"strings"
 )
 
@@ -118,3 +119,65 @@ func NeighbourGrids(lat, lon float64, ring int) []string {
 	}
 	return out
 }
+
+// GridsWithin returns every Maidenhead square whose centre lies within km of
+// (lat, lon), nearest first, at most max of them.
+//
+// NeighbourGrids answers "the ring around here", which is the right shape for a
+// few hundred kilometres and the wrong one past that: a ring is a square, so
+// asking for 2000 km through it means 1369 squares, most of them further away
+// than the ones it left out. This measures instead, and the count then follows
+// the AREA asked for rather than the corner of a box.
+//
+// Nearest first because the caller has to be able to trim: these become one
+// broker subscription each, and when there are more than can be afforded, the
+// squares to keep are the close ones.
+func GridsWithin(lat, lon, km float64, max int) []string {
+	if km <= 0 || max <= 0 {
+		return nil
+	}
+	// One square is 1° of latitude and 2° of longitude. Sweep a box big enough
+	// to hold the circle — a degree of latitude is ~111 km everywhere, and a
+	// degree of longitude never MORE than that, so this cannot cut the circle.
+	steps := int(km/111.0) + 1
+	type cand struct {
+		grid string
+		d    float64
+	}
+	seen := map[string]bool{}
+	out := []cand{}
+	for dLat := -steps; dLat <= steps; dLat++ {
+		for dLon := -2 * steps; dLon <= 2*steps; dLon++ {
+			la := lat + float64(dLat)
+			lo := lon + float64(dLon)*2
+			if la > 90 || la < -90 {
+				continue
+			}
+			g := LatLonToGrid(la, lo)
+			if seen[g] {
+				continue
+			}
+			// Measured to the square's own centre, not to the sample point, so
+			// two samples landing in one square agree about how far it is.
+			cLat, cLon, ok := GridToLatLon(g)
+			if !ok {
+				continue
+			}
+			d := HaversineKm(lat, lon, cLat, cLon)
+			if d > km {
+				continue
+			}
+			seen[g] = true
+			out = append(out, cand{g, d})
+		}
+	}
+	sort.Slice(out, func(i, j int) bool { return out[i].d < out[j].d })
+	if len(out) > max {
+		out = out[:max]
+	}
+	grids := make([]string, len(out))
+	for i, c := range out {
+		grids[i] = c.grid
+	}
+	return grids
+}

internal/integrations/udp/decodemode_test.go

@@ -113,3 +113,27 @@ func TestDecodeKeepsTheRawModeMarkerForReplies(t *testing.T) {
 			ev.DecodeModeRaw, "~")
 	}
 }
+
+// Reported from a real shack: JTDX decoding FT4 showed up as Q65.
+//
+// The two forks disagree about ":" — Q65 in WSJT-X, FT4 in JTDX — so the
+// character alone cannot answer, and the wrong answer poisons every verdict
+// that follows: new mode, new slot, the mode filter. The program's own Status
+// names the mode in full and settles it.
+func TestAmbiguousModeCharDefersToTheProgram(t *testing.T) {
+	cases := []struct {
+		raw, status, want, why string
+	}{
+		{":", "FT4", "FT4", "JTDX decoding FT4"},
+		{":", "Q65", "Q65", "WSJT-X decoding Q65"},
+		{":", "", "Q65", "no Status yet — WSJT-X's reading, the older and commoner"},
+		// The unambiguous markers are unaffected, Status or no Status.
+		{"~", "FT4", "FT8", "a tilde is FT8 in both"},
+		{"+", "", "FT4", "a plus is FT4 in both"},
+	}
+	for _, c := range cases {
+		if got := DecodeModeName(c.raw, c.status); got != c.want {
+			t.Errorf("DecodeModeName(%q, %q) = %q, want %q — %s", c.raw, c.status, got, c.want, c.why)
+		}
+	}
+}

internal/integrations/udp/dxclear_test.go

@@ -0,0 +1,54 @@
+package udp
+
+import "testing"
+
+// Three decoders on one multicast group, which is the ordinary setup. MSHV is
+// working a station; WSJT-X and JTDX are idle and say so once a second each.
+//
+// Read across the listener rather than per program, every one of those idle
+// Status packets was a "the operator cleared the DX Call" — so OpsLog emptied
+// the entry field, MSHV's next Status refilled it, and the entry blinked and
+// the map zoomed at 1 Hz for as long as all three were running.
+func TestDXClearIsPerProgram(t *testing.T) {
+	s := &Server{}
+
+	if s.noteDXCall("MSHV", "F5NNN") {
+		t.Fatal("taking up a station is not a clear")
+	}
+	// The idle ones, interleaved, as they arrive on the wire.
+	for i := 0; i < 3; i++ {
+		if s.noteDXCall("WSJT-X", "") {
+			t.Fatal("an idle WSJT-X was read as MSHV clearing its call")
+		}
+		if s.noteDXCall("JTDX", "") {
+			t.Fatal("an idle JTDX was read as MSHV clearing its call")
+		}
+		if s.noteDXCall("MSHV", "F5NNN") {
+			t.Fatal("MSHV repeating the same station is not a clear")
+		}
+	}
+
+	// MSHV's own clear is still an edge, and only once: the Status that follows
+	// is just as empty and must not re-clear a field the operator may have
+	// typed into since.
+	if !s.noteDXCall("MSHV", "") {
+		t.Error("MSHV clearing its own DX Call was not reported")
+	}
+	if s.noteDXCall("MSHV", "") {
+		t.Error("the clear repeated on the next identical Status")
+	}
+}
+
+// Each program's edge is its own: WSJT-X letting go says nothing about MSHV.
+func TestDXClearOfOneProgramLeavesTheOthers(t *testing.T) {
+	s := &Server{}
+	s.noteDXCall("MSHV", "F5NNN")
+	s.noteDXCall("WSJT-X", "DL1ABC")
+
+	if !s.noteDXCall("WSJT-X", "") {
+		t.Error("WSJT-X clearing its own call should be reported")
+	}
+	if s.noteDXCall("MSHV", "F5NNN") {
+		t.Error("MSHV's unchanged call was disturbed by WSJT-X's clear")
+	}
+}

internal/integrations/udp/server.go

@@ -235,7 +235,16 @@ type Server struct {
 	// lastMode is the mode NAME from each program's last Status, used to resolve
 	// a Decode's one-character mode marker.
 	lastMode map[string]string
-	lastDX   string // WSJT: last non-empty DX Call seen, to detect a clear
+	// lastDX is each program's last DX Call, to spot the moment it is cleared.
+	//
+	// PER PROGRAM, and that is the whole point of the map. Two or three decoders
+	// commonly share one listener — the multicast group on 2237 is the usual
+	// setup — and a single value meant WSJT-X's empty DX Call was read as MSHV
+	// clearing the station it was calling. One "cleared" per second, alternating
+	// with MSHV re-announcing the call: the entry field emptied and refilled at
+	// 1 Hz and the map zoomed in and out with it. "The operator cleared the DX
+	// call" is a statement about ONE program, never about a socket.
+	lastDX map[string]string
 
 	// badPkts counts datagrams this listener could not parse, so the diagnostic
 	// dump below stays bounded. A misconfigured port is not a one-off: the
@@ -403,6 +412,25 @@ func (s *Server) run() {
 // radios on different bands. The port is included — a program keeps its socket
 // for as long as it runs, which is exactly the lifetime this has to be stable
 // over.
+// noteDXCall records a program's current DX Call and reports whether THIS
+// program has just cleared one.
+//
+// A decoder sends Status every second whether anything changed or not, so the
+// clear is an edge — a call, then none — and it is an edge in ONE program's
+// stream. Several decoders commonly share a listener, and reading the edge
+// across all of them made an idle WSJT-X look like MSHV abandoning the station
+// it was calling, once a second, for as long as both were running.
+func (s *Server) noteDXCall(inst, dx string) (cleared bool) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	if s.lastDX == nil {
+		s.lastDX = map[string]string{}
+	}
+	prev := s.lastDX[inst]
+	s.lastDX[inst] = dx
+	return dx == "" && prev != ""
+}
+
 func (s *Server) instanceLabel(id string, remote *net.UDPAddr) string {
 	if id == "" {
 		return ""
@@ -623,12 +651,9 @@ func (s *Server) handle(pkt []byte, remote *net.UDPAddr) {
 		// operator cleared it in WSJT-X / JTDX / MSHV. Fire ONE clear (tracked per
 		// server) — an idle app sends empty Status every second, and we must not
 		// re-clear (which would fight a manual entry) on each of those.
-		s.mu.Lock()
-		prev := s.lastDX
-		s.lastDX = w.DXCall
-		s.mu.Unlock()
-		if w.DXCall == "" && prev != "" {
+		if s.noteDXCall(inst, w.DXCall) {
 			ev.ClearCall = true
+			ev.ProgramID = inst // whose clear it is — the app filters on it
 		}
 	case ServiceADIF:
 		// JTAlert / GridTracker forward a text ADIF record after a QSO is

internal/integrations/udp/wsjt.go

@@ -523,10 +523,24 @@ var decodeModeChar = map[string]string{
 	"#": "JT65",
 	"@": "JT9",
 	"&": "MSK144",
-	":": "Q65",
 	"`": "FST4",
 }
 
+// ambiguousModeChar is a marker the forks do not agree on.
+//
+// ":" is Q65 in WSJT-X and FT4 in JTDX, so the character alone cannot answer:
+// a JTDX operator decoding FT4 was told they were on Q65, and every verdict
+// downstream — new mode, new slot, the mode filter — was computed against a
+// mode nobody was using.
+//
+// The sender's own Status settles it. It comes from the same program, names the
+// mode in full, and is re-sent whenever it changes, so it knows what that
+// program is decoding in a way one character never can. The fallback is
+// WSJT-X's reading, which is the older and commoner one.
+var ambiguousModeChar = map[string]string{
+	":": "Q65",
+}
+
 // DecodeModeName resolves a Decode's mode field to a real mode name. statusMode
 // is the mode from the same program's last Status, used when the field is a
 // marker we do not know, or empty.
@@ -535,6 +549,13 @@ func DecodeModeName(raw, statusMode string) string {
 	if m, ok := decodeModeChar[raw]; ok {
 		return m
 	}
+	if fallback, ok := ambiguousModeChar[raw]; ok {
+		// Believe the program over the character it happened to print.
+		if st := strings.ToUpper(strings.TrimSpace(statusMode)); st != "" {
+			return st
+		}
+		return fallback
+	}
 	// A mode name is at least two alphanumeric characters ("FT8", "JS8", "Q65").
 	// Anything shorter, or carrying punctuation, is a marker rather than a name.
 	if len(raw) >= 2 {

internal/lookup/lookup.go

@@ -167,9 +167,14 @@ func (m *Manager) Lookup(ctx context.Context, callsign string) (Result, error) {
 				r.Callsign = call
 				r.Source = p.Name()
 				r.FetchedAt = time.Now().UTC()
-				fillFromDXCC(&r, dxcc)
 				normalizeNames(&r)
+				// Cached BEFORE the cty.dat pass, so the row is a copy of the
+				// callbook page rather than of our conclusions about it. Every
+				// read runs the pass again (see the cache-hit path above), so a
+				// later cty.dat update reaches old rows — and a value we derived
+				// can never come back looking like something the page said.
 				_ = m.cache.Put(ctx, r)
+				fillFromDXCC(&r, dxcc)
 				return r, nil
 			}
 			if errors.Is(err, ErrNotFound) {
@@ -208,9 +213,9 @@ func (m *Manager) Lookup(ctx context.Context, callsign string) (Result, error) {
 			if !saysNothingAboutLocation(call) {
 				clearHomeLocation(&r)
 			}
-			fillFromDXCC(&r, dxcc) // entity/zones/lat-lon from the FULL (slashed) call
 			normalizeNames(&r)
-			_ = m.cache.Put(ctx, r)
+			_ = m.cache.Put(ctx, r) // the page as it was; cty.dat is applied on read
+			fillFromDXCC(&r, dxcc)  // entity/zones/lat-lon from the FULL (slashed) call
 			return r, nil
 		}
 	}
@@ -390,6 +395,47 @@ func titleCase(s string) string {
 // lives, and keeps the ones that say WHO they are — name, address, QSL route.
 // A portable operator's cards still go to the home address, so that address is
 // not wrong; their county is.
+// sameEntityName reports whether two country names denote the same entity.
+//
+// The two come from different vocabularies — the callbook writes "Germany"
+// where cty.dat writes "Fed. Rep. of Germany", "United States" where the ADIF
+// list says "United States of America" — so they are compared on their
+// significant words with the boilerplate of officialdom removed, and one
+// containing the other counts as a match.
+//
+// Deliberately generous. Getting it wrong in the strict direction discards a
+// correct grid, which is the fault this exists to fix; getting it wrong in the
+// generous direction keeps a location from a neighbouring entity, which is the
+// state of every callbook record that has no page for the portable call anyway.
+func sameEntityName(a, b string) bool {
+	na, nb := entityKey(a), entityKey(b)
+	if na == "" || nb == "" {
+		return false
+	}
+	return na == nb || strings.Contains(na, nb) || strings.Contains(nb, na)
+}
+
+var entityNoise = map[string]bool{
+	"THE": true, "OF": true, "FED": true, "REP": true, "REPUBLIC": true,
+	"FEDERAL": true, "FEDERATION": true, "DEM": true, "DEMOCRATIC": true,
+	"STATE": true, "KINGDOM": true, "AMERICA": true,
+}
+
+// entityKey reduces a country name to its significant letters.
+func entityKey(s string) string {
+	s = strings.ToUpper(strings.TrimSpace(s))
+	var b strings.Builder
+	for _, tok := range strings.FieldsFunc(s, func(r rune) bool {
+		return r == ' ' || r == '.' || r == ',' || r == '-'
+	}) {
+		if entityNoise[tok] {
+			continue
+		}
+		b.WriteString(tok)
+	}
+	return b.String()
+}
+
 func clearHomeLocation(r *Result) {
 	r.Country, r.Continent = "", ""
 	r.CQZ, r.ITUZ, r.DXCC = 0, 0, 0
@@ -425,14 +471,26 @@ func fillFromDXCC(r *Result, dxcc DXCCResolver) bool {
 	//
 	// Same-entity portables (F4BPO/P, W2RE/2) are untouched: the entities match,
 	// and there the home details ARE where the operator is.
+	// UNLESS THE RECORD IS ABOUT THE OPERATION ITSELF.
+	//
+	// Some compound calls have a callbook page of their own, filed under the
+	// slashed form and describing where the station actually is: QRZ's HP/WE9G
+	// carries Altos del Maria, Panama, square EJ98xq. Clearing that threw away
+	// the one field the lookup existed to find, and the QSO was logged with no
+	// grid at all while the page plainly showed one.
+	//
+	// The record's OWN country is what tells the two apart: a page for the
+	// operation names the entity being operated from, a home page names home.
 	if dxccNum != 0 && strings.ContainsRune(r.Callsign, '/') && !saysNothingAboutLocation(r.Callsign) {
 		if home := homeCall(r.Callsign); home != "" && home != r.Callsign {
 			if homeNum, _, _, _, _, _, _, homeOK := dxcc.Resolve(home); homeOK && homeNum != 0 && homeNum != dxccNum {
+				if !sameEntityName(r.Country, country) {
 					clearHomeLocation(r)
 					filled = true
 				}
 			}
 		}
+	}
 	if country != "" {
 		r.Country = country
 		filled = true
@@ -441,11 +499,23 @@ func fillFromDXCC(r *Result, dxcc DXCCResolver) bool {
 		r.Continent = cont
 		filled = true
 	}
-	if cqz != 0 {
+	// Zones FILL, they do not override.
+	//
+	// The rule above is right for the country and wrong for the zones, because
+	// they answer different questions. An entity is what a callsign IS, and
+	// cty.dat is the authority on that. A zone is where the station SITS, and a
+	// large entity has many: Asiatic Russia spans CQ 16 to 23 and ITU 20 to 34,
+	// and cty.dat carries one representative pair for the whole country. Stamping
+	// it on every UA0 threw away the callbook's per-station answer and recorded a
+	// WAZ credit for a zone the operator had not worked — RU0LL is CQ 19, ITU 34,
+	// and was logged 17/30.
+	//
+	// So the callbook wins where it spoke, and cty.dat fills the silence.
+	if cqz != 0 && r.CQZ == 0 {
 		r.CQZ = cqz
 		filled = true
 	}
-	if ituz != 0 {
+	if ituz != 0 && r.ITUZ == 0 {
 		r.ITUZ = ituz
 		filled = true
 	}

internal/lookup/portable_location_test.go

@@ -91,3 +91,60 @@ func TestSameEntityPortableKeepsItsLocation(t *testing.T) {
 		t.Errorf("lat/lon = %v/%v — the precise home position was replaced by the entity centroid", r.Lat, r.Lon)
 	}
 }
+
+// The other half again, and the one an operator reported: a compound call with
+// a callbook page OF ITS OWN. QRZ files HP/WE9G under that exact form, with the
+// Panama address and square the station is actually operating from — and the
+// QSO was being logged with no grid at all while the page plainly showed one.
+func TestACompoundCallWithItsOwnPageKeepsThatPagesLocation(t *testing.T) {
+	dxcc := testDXCC()
+	dxcc["HP/WE9G"] = struct {
+		num       int
+		country   string
+		cont      string
+		cqz, ituz int
+		lat, lon  float64
+	}{num: 88, country: "Panama", cont: "NA", cqz: 7, ituz: 11, lat: 8.5, lon: -80.0}
+	dxcc["WE9G"] = struct {
+		num       int
+		country   string
+		cont      string
+		cqz, ituz int
+		lat, lon  float64
+	}{num: 291, country: "United States", cont: "NA", cqz: 5, ituz: 8, lat: 39.8, lon: -98.5}
+
+	r := Result{
+		Callsign: "HP/WE9G",
+		Name:     "Richard B",
+		Country:  "Panama", // the RECORD's own country: this page is the operation
+		Grid:     "EJ98xq",
+		Lat:      8.686667, Lon: -80.043333,
+	}
+	fillFromDXCC(&r, dxcc)
+
+	if r.Grid != "EJ98xq" {
+		t.Errorf("grid = %q, want EJ98xq — the page describes the operation, not a home address", r.Grid)
+	}
+	if r.Lat != 8.686667 || r.Lon != -80.043333 {
+		t.Errorf("lat/lon = %v/%v — the station's own position was replaced by the entity centroid", r.Lat, r.Lon)
+	}
+}
+
+func TestSameEntityNameAcrossVocabularies(t *testing.T) {
+	same := [][2]string{
+		{"Germany", "Fed. Rep. of Germany"},
+		{"United States", "United States of America"},
+		{"Panama", "Panama"},
+		{"Kosovo", "Republic of Kosovo"},
+	}
+	for _, p := range same {
+		if !sameEntityName(p[0], p[1]) {
+			t.Errorf("%q and %q read as different entities", p[0], p[1])
+		}
+	}
+	for _, p := range [][2]string{{"Costa Rica", "United States"}, {"France", "Belgium"}, {"", "Panama"}} {
+		if sameEntityName(p[0], p[1]) {
+			t.Errorf("%q and %q read as the same entity", p[0], p[1])
+		}
+	}
+}

internal/lookup/zones_test.go

@@ -0,0 +1,36 @@
+package lookup
+
+import "testing"
+
+// asiaticRussia stands in for cty.dat: one representative zone pair for a
+// country eight CQ zones wide.
+func asiaticRussia(cqz, ituz int) fakeDXCC {
+	return fakeDXCC{"RU0LL": {num: 15, country: "Asiatic Russia", cont: "AS", cqz: cqz, ituz: ituz}}
+}
+
+// A zone is where the station SITS; an entity is what the callsign IS. Asiatic
+// Russia spans CQ 16-23 and ITU 20-34, and cty.dat carries one representative
+// pair for the whole country — so stamping it over a callbook's per-station
+// answer records a WAZ credit for a zone the operator never worked.
+//
+// Reported with real callsigns: RU0LL is CQ 19 / ITU 34 and was logged 17/30.
+func TestCallbookZonesSurviveTheEntityDefault(t *testing.T) {
+	// What QRZ said about this very station.
+	r := Result{Callsign: "RU0LL", CQZ: 19, ITUZ: 34}
+	fillFromDXCC(&r, asiaticRussia(17, 30))
+	if r.CQZ != 19 || r.ITUZ != 34 {
+		t.Errorf("callbook zones were overwritten: CQ%d ITU%d, want CQ19 ITU34", r.CQZ, r.ITUZ)
+	}
+	if r.Country != "Asiatic Russia" {
+		t.Errorf("the ENTITY must still come from cty.dat, got %q", r.Country)
+	}
+}
+
+func TestEntityZonesFillSilence(t *testing.T) {
+	// A callbook that says nothing about zones still gets an answer.
+	r := Result{Callsign: "RU0LL"}
+	fillFromDXCC(&r, asiaticRussia(17, 30))
+	if r.CQZ != 17 || r.ITUZ != 30 {
+		t.Errorf("empty zones were not filled: CQ%d ITU%d", r.CQZ, r.ITUZ)
+	}
+}

internal/pskr/pskr.go

@@ -140,8 +140,17 @@ func New(cfg Config) *Watcher {
 // same measurement is 0.2 to 1.2 — the load follows distance, which is what the
 // feed is actually about, and it is the same for every operator.
 func (w *Watcher) topics() []string {
+	bands := w.cfg.Bands
+	// One subscription per band per square multiplies, and past a point the
+	// cheaper trade is to take every band from those squares and drop the
+	// unwanted ones here: four bands over six hundred squares is 2400
+	// subscriptions, where "+" is 600 for maybe three times the messages —
+	// which are then filtered locally, as they already are for everything else.
+	if len(bands) > 1 && len(bands)*len(w.cfg.RxGrids) > 1000 {
+		bands = []string{"+"}
+	}
 	out := []string{}
-	for _, b := range w.cfg.Bands {
+	for _, b := range bands {
 		if len(w.cfg.RxGrids) == 0 {
 			out = append(out, "pskr/filter/v2/"+b+"/#")
 			continue
@@ -181,13 +190,30 @@ func (w *Watcher) Start() error {
 
 	opts.OnConnect = func(c mqtt.Client) {
 		w.cfg.Logf("pskr: connected to %s", w.cfg.Broker)
-		for _, topic := range w.topics() {
-			if tok := c.Subscribe(topic, 0, w.handle); tok.Wait() && tok.Error() != nil {
-				w.cfg.Logf("pskr: subscribe %s failed: %v", topic, tok.Error())
+		topics := w.topics()
+		// In batches, not one at a time. Each Subscribe waits for its own
+		// acknowledgement, which is fine for the nine squares this started with
+		// and is minutes of waiting for the six hundred a 2000 km radius asks
+		// for — during which the feed is only partly subscribed and the panel
+		// looks broken.
+		const batch = 100
+		subbed := 0
+		for i := 0; i < len(topics); i += batch {
+			end := i + batch
+			if end > len(topics) {
+				end = len(topics)
+			}
+			filters := make(map[string]byte, end-i)
+			for _, t := range topics[i:end] {
+				filters[t] = 0
+			}
+			if tok := c.SubscribeMultiple(filters, w.handle); tok.Wait() && tok.Error() != nil {
+				w.cfg.Logf("pskr: subscribing to %d topics failed: %v", len(filters), tok.Error())
 				continue
 			}
-			w.cfg.Logf("pskr: watching %s", topic)
+			subbed += len(filters)
 		}
+		w.cfg.Logf("pskr: watching %d topics (%d bands × %d receiver squares)", subbed, len(w.cfg.Bands), max(len(w.cfg.RxGrids), 1))
 	}
 	opts.OnConnectionLost = func(_ mqtt.Client, err error) {
 		w.mu.Lock()
@@ -293,6 +319,12 @@ type Status struct {
 	LastErr  string    `json:"last_err,omitempty"`
 	Broker   string    `json:"broker"`
 	Bands    []string  `json:"bands"`
+	// What the feed is actually filtered on, so a panel showing nothing can say
+	// WHY instead of leaving the operator to guess: the radius in force, and how
+	// many receiver squares it came to. A radius raised in Preferences that
+	// never reached the subscription is invisible without these two.
+	NearKm  int `json:"near_km"`
+	Squares int `json:"squares"`
 }
 
 func (w *Watcher) Status() Status {
@@ -301,6 +333,7 @@ func (w *Watcher) Status() Status {
 	st := Status{
 		Running: w.running, Received: w.received, LastAt: w.lastAt,
 		LastErr: w.lastErr, Broker: w.cfg.Broker,
+		NearKm: w.cfg.NearKm, Squares: len(w.cfg.RxGrids),
 	}
 	st.Bands = append(st.Bands, w.cfg.Bands...)
 	return st

internal/pskrtgt/pskrtgt.go

@@ -0,0 +1,936 @@
+// Package pskrtgt answers one question about one station: can they hear me?
+//
+// It is the other way round from internal/pskr. That watcher asks what is
+// happening AROUND HERE — reports collected near the operator, whoever sent
+// them — and it is the right shape for finding a band opening or a new entity.
+// This one starts from a callsign the operator wants to work and gathers the
+// evidence about that path, in both directions:
+//
+//   - did the DX decode MY call, and how long ago
+//   - who NEAR ME did the DX decode (the path is open at my end)
+//   - who near the DX decoded ME (the path is open at his end, even when he
+//     uploads nothing himself)
+//   - how many stations he is decoding right now (the pileup I am up against)
+//   - where in his receive passband those decodes land, so a caller can pick a
+//     slot he is not already covered on
+//
+// Nothing here is persisted and nothing is inferred from a QSO: it is a sliding
+// window of PSK Reporter reports, and when the window empties the answer goes
+// back to "not known", which is the honest answer.
+//
+// The window is FIVE minutes. An FT8 cycle is fifteen seconds, so that is
+// twenty chances for a path to show itself — short enough that "he decoded you"
+// still means now, long enough that one missed cycle does not erase it.
+package pskrtgt
+
+import (
+	"encoding/json"
+	"encoding/xml"
+	"fmt"
+	"net/http"
+	"net/url"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	mqtt "github.com/eclipse/paho.mqtt.golang"
+)
+
+// DefaultBroker is PSK Reporter's public MQTT endpoint, TLS. Same one the
+// band-opening watcher uses — two connections to it, because the two want
+// opposite slices of the feed and neither can be filtered out of the other's.
+const DefaultBroker = "tls://mqtt.pskreporter.info:1884"
+
+const (
+	// window is how far back a report still counts.
+	//
+	// TEN minutes. Five was chosen as "recent enough to still mean now", and on
+	// the air it meant half the evidence: PSK Reporter's uploaders batch their
+	// reports, many of them every five minutes, so a five-minute window catches
+	// roughly one upload cycle per station. Side by side with DXHunter on the
+	// same DX, the same second: 18 decodes here against 27 there, and a station
+	// missing from "from your area" that was simply six minutes old.
+	//
+	// It is a window on ONE station's activity, not on the band: ten minutes of
+	// a DX working a pileup is still what he is doing now.
+	window = 10 * time.Minute
+	// pileupWindow is the tighter one for "how many stations is he working
+	// through". A station he decoded four minutes ago has very likely moved on,
+	// and counting it inflates the only number an operator uses to decide
+	// whether it is worth calling at all.
+	pileupWindow = 2 * time.Minute
+
+	// backfillEvery is how often the history query is asked again for a target
+	// that is still being watched. Five minutes is PSK Reporter's own courtesy
+	// interval for repeating a query, and it happens to be the period most
+	// uploaders batch on.
+	backfillEvery = 5 * time.Minute
+
+	// The passband histogram: 60 Hz bins from 200 Hz to 4000 Hz. Above 4 kHz
+	// there is essentially no FT8, and drawing the empty space made the strip
+	// look broken rather than empty.
+	binHz  = 60
+	lowHz  = 200
+	highHz = 4000
+)
+
+// Scope decides how much of the feed is subscribed to.
+type Scope string
+
+const (
+	// ScopeTarget subscribes to three filters: what the DX transmits, what he
+	// receives, and who hears the operator. A handful of messages a second, and
+	// the REST backfill fills the window the moment the target changes.
+	ScopeTarget Scope = "target"
+	// ScopeBand subscribes to the whole band's FTx traffic. Switching target is
+	// then instant with no backfill, at the cost of every message on the band —
+	// hundreds a second when 20 m is busy.
+	ScopeBand Scope = "band"
+)
+
+// spot is one PSK Reporter reception report, as the v2 payload carries it.
+type spot struct {
+	Freq   int64  `json:"f"`
+	Mode   string `json:"md"`
+	SNR    int    `json:"rp"`
+	TxCall string `json:"sc"`
+	TxGrid string `json:"sl"`
+	RxCall string `json:"rc"`
+	RxGrid string `json:"rl"`
+	Band   string `json:"b"`
+	// at is stamped on arrival. The payload's own timestamps differ between
+	// versions of the feed, and everything here is measured in minutes.
+	at time.Time
+}
+
+// Entry is one station in one of the lists the panel shows.
+type Entry struct {
+	Call     string `json:"call"`
+	Grid     string `json:"grid"`
+	SNR      int    `json:"snr"`
+	OffsetHz int    `json:"offset_hz"` // audio offset from the operator's dial
+	AgeSec   int    `json:"age_sec"`
+}
+
+// Bin is one 60 Hz slice of the DX's receive passband.
+type Bin struct {
+	OffsetHz int     `json:"offset_hz"`
+	Count    int     `json:"count"`
+	AvgSNR   float64 `json:"avg_snr"`
+}
+
+// Analysis is the whole snapshot the panel draws, recomputed on demand.
+type Analysis struct {
+	Target string `json:"target"`
+	Mode   string `json:"mode,omitempty"`
+	// Enabled is the operator's switch; Online is whether the broker is
+	// actually connected. A panel that says nothing has to be able to say WHY.
+	Enabled bool `json:"enabled"`
+	Online  bool `json:"online"`
+	// Spots is everything in the window, the sign that the feed is alive even
+	// when every counter below is legitimately zero.
+	Spots int `json:"spots"`
+
+	// HeMe is the answer to the question. The rest is what to do when it is no.
+	HeMe        bool `json:"he_me"`
+	HeMeSeconds int  `json:"he_me_seconds"`
+	HeMeSNR     int  `json:"he_me_snr"`
+	HeMeOffset  int  `json:"he_me_offset_hz"`
+
+	// TargetUploads distinguishes "he is not hearing anybody" from "his software
+	// tells PSK Reporter nothing" — without it, a silent panel reads as a dead
+	// band when it may be a full one.
+	TargetUploads bool   `json:"target_uploads"`
+	TargetGrid    string `json:"target_grid,omitempty"`
+
+	// Near the DX: stations in his square that decoded the operator. This is
+	// what still works when he uploads nothing himself.
+	NearHimCount int     `json:"near_him_count"`
+	NearHimTop   []Entry `json:"near_him_top"`
+
+	// Near the operator: stations in his own field that the DX decoded.
+	FromMyAreaCount int     `json:"from_my_area_count"`
+	FromMyAreaTop   []Entry `json:"from_my_area_top"`
+	PathOpen        bool    `json:"path_open"`
+
+	// Who heard the DX, worldwide and locally.
+	HeardByCount   int     `json:"heard_by_count"`
+	HeardNearMe    int     `json:"heard_near_me"`
+	HeardNearMeTop []Entry `json:"heard_near_me_top"`
+
+	// The pileup: everyone he decoded (window), and the recent slice of it.
+	DecodedByCount int      `json:"decoded_by_count"`
+	DecodedByTop   []Entry  `json:"decoded_by_top"`
+	DecodedByCalls []string `json:"decoded_by_calls"`
+	PileupCount    int      `json:"pileup_count"`
+
+	// His receive passband, and a slot in it that nobody is using.
+	DialHz          int64 `json:"dial_hz"`
+	CeilingHz       int   `json:"ceiling_hz"`
+	DecodesInWindow int   `json:"decodes_in_window"`
+	Bins            []Bin `json:"bins"`
+	SuggestedOffset int   `json:"suggested_offset"`
+}
+
+// Config is what the watcher needs from the application.
+type Config struct {
+	Broker string
+	Scope  Scope
+	// MyCall and MyGrid are the operator's. Both matter: the callsign is what
+	// "he decoded you" is looked up by, and the grid decides what counts as
+	// "near me" — its first two characters, a Maidenhead FIELD, which is a few
+	// hundred kilometres rather than a whole continent.
+	MyCall string
+	MyGrid string
+	// Continent resolves a callsign to EU/NA/AS/… It is only a FALLBACK, for an
+	// operator whose grid is not set: without a grid there is nothing to compare
+	// squares with, and a continent is better than nothing. Injected so this
+	// package does not pull in the country file.
+	Continent func(call string) string
+	Logf      func(string, ...any)
+}
+
+// Watcher owns the MQTT connection and the window.
+type Watcher struct {
+	mu     sync.Mutex
+	cfg    Config
+	client mqtt.Client
+
+	target string // the callsign being analysed, upper case
+	mode   string // FT8 / FT4 — the target's mode, for the band-scope topic
+	band   string // band tag currently subscribed to under ScopeBand
+	dialHz int64  // the operator's dial, for audio offsets
+
+	// subs is what we are subscribed to right now, so a target change can take
+	// the old filters down without guessing at their shape.
+	subs  []string
+	spots []spot
+
+	// backfilled remembers the target the REST history was fetched for and when,
+	// so the panel's polling cannot re-fetch it every second — PSK Reporter's
+	// query API answers that with a rate limit, and rightly — while a target
+	// held for a while still gets a fresh look every few minutes.
+	backfilled   string
+	backfilledAt time.Time
+}
+
+func New(cfg Config) *Watcher {
+	if cfg.Broker == "" {
+		cfg.Broker = DefaultBroker
+	}
+	if cfg.Scope == "" {
+		cfg.Scope = ScopeTarget
+	}
+	if cfg.Logf == nil {
+		cfg.Logf = func(string, ...any) {}
+	}
+	return &Watcher{cfg: cfg}
+}
+
+// Watch points the analysis at a callsign. Connects on the first call, so an
+// operator who never opens the panel never opens a socket.
+//
+// Called repeatedly with the same target — the panel re-asserts it as the
+// operator works — so everything expensive here is guarded on an actual change.
+func (w *Watcher) Watch(target, mode string, dialHz int64) error {
+	target = strings.ToUpper(strings.TrimSpace(target))
+	mode = strings.ToUpper(strings.TrimSpace(mode))
+	if mode == "" {
+		mode = "FT8"
+	}
+	if target == "" {
+		w.Stop()
+		return nil
+	}
+
+	w.mu.Lock()
+	changed := target != w.target || mode != w.mode
+	w.target, w.mode = target, mode
+	if dialHz > 0 {
+		w.dialHz = dialHz
+	}
+	band := bandTag(w.dialHz)
+	bandChanged := band != "" && band != w.band
+	// Set BEFORE any connect: the subscription is built from it, and a first
+	// connect that found it empty would subscribe to every band at once under
+	// the band-wide scope — the one case where that is expensive.
+	if band != "" {
+		w.band = band
+	}
+	client := w.client
+	w.mu.Unlock()
+
+	if client == nil || !client.IsConnected() {
+		c, err := w.connect()
+		if err != nil {
+			return err
+		}
+		w.mu.Lock()
+		w.client, client = c, c
+		w.mu.Unlock()
+		// connect() subscribes on its own OnConnect handler; anything below
+		// would only repeat it.
+		changed = false
+		bandChanged = false
+	}
+	if !changed && !bandChanged {
+		return nil
+	}
+
+	if changed {
+		w.dropWindowOfPreviousTarget()
+	}
+
+	if err := w.resubscribe(client); err != nil {
+		return err
+	}
+	if changed {
+		// In BOTH scopes. The band-wide subscription was assumed to arrive with
+		// the target's reports already in the window — true only once it has been
+		// running a while, and false in the case that matters: the operator picks
+		// a station a minute after opening the panel and sees one decode where
+		// another program, running for an hour, shows four.
+		go w.backfill(target, mode)
+	}
+	return nil
+}
+
+// dropWindowOfPreviousTarget empties the collected window when it belonged to
+// the station being left behind.
+//
+// WHOSE WINDOW IS IT? Under the narrow scope the subscription IS the target —
+// three filters about one station — so the window is his, and keeping it across
+// a change would answer the new question with the old station's evidence.
+//
+// Under the band-wide scope it is the BAND's: every FTx report on it, filtered
+// by target only when the analysis is drawn. Clearing it there threw away an
+// hour of accumulated evidence on every click, and a panel that had been showing
+// hundreds of reports read zero — the operator clicking a decode to ask "can he
+// hear me" is the very moment that history is worth something, and it was being
+// deleted in order to answer the question.
+func (w *Watcher) dropWindowOfPreviousTarget() {
+	w.mu.Lock()
+	defer w.mu.Unlock()
+	if w.cfg.Scope == ScopeBand {
+		return
+	}
+	w.spots = w.spots[:0]
+}
+
+// resubscribe replaces every filter with the ones the current target and scope
+// want. Takes the old ones down first: a target change that only ADDED filters
+// would leave the previous station's reports arriving for ever.
+func (w *Watcher) resubscribe(c mqtt.Client) error {
+	w.mu.Lock()
+	old := w.subs
+	topics := w.topicsLocked()
+	w.subs = topics
+	target, scope := w.target, w.cfg.Scope
+	w.mu.Unlock()
+
+	if len(old) > 0 {
+		if tok := c.Unsubscribe(old...); tok.Wait() && tok.Error() != nil {
+			w.cfg.Logf("pskr target: unsubscribe failed: %v", tok.Error())
+		}
+	}
+	if len(topics) == 0 {
+		return nil
+	}
+	filters := make(map[string]byte, len(topics))
+	for _, t := range topics {
+		filters[t] = 0
+	}
+	if tok := c.SubscribeMultiple(filters, w.handle); tok.Wait() && tok.Error() != nil {
+		return fmt.Errorf("pskr target: subscribe: %w", tok.Error())
+	}
+	w.cfg.Logf("pskr target: watching %s (%s scope, %d filters)", target, scope, len(topics))
+	return nil
+}
+
+// topicsLocked builds the subscription list. The v2 topic is
+//
+//	pskr/filter/v2/<band>/<mode>/<tx call>/<rx call>/<tx grid>/<rx grid>/<tx dxcc>/<rx dxcc>
+//
+// so both directions of one callsign are addressable at the broker, which is
+// the whole reason the narrow scope costs almost nothing.
+func (w *Watcher) topicsLocked() []string {
+	if w.target == "" {
+		return nil
+	}
+	if w.cfg.Scope == ScopeBand {
+		band := w.band
+		if band == "" {
+			band = "+"
+		}
+		return []string{"pskr/filter/v2/" + band + "/" + w.mode + "/#"}
+	}
+	out := []string{
+		// What he is transmitting: who is hearing him.
+		"pskr/filter/v2/+/" + w.mode + "/" + w.target + "/#",
+		// What he is receiving: the pileup, and whether the operator is in it.
+		"pskr/filter/v2/+/" + w.mode + "/+/" + w.target + "/#",
+	}
+	// Who hears the OPERATOR. Only some of those receivers are near the DX, and
+	// those are the ones that answer "can I be heard over there" on a DX who
+	// uploads nothing himself. Left out when the callsign is not configured
+	// rather than subscribing to a filter with an empty level in it.
+	if my := strings.ToUpper(strings.TrimSpace(w.cfg.MyCall)); my != "" {
+		out = append(out, "pskr/filter/v2/+/"+w.mode+"/"+my+"/#")
+	}
+	return out
+}
+
+func (w *Watcher) connect() (mqtt.Client, error) {
+	opts := mqtt.NewClientOptions().
+		AddBroker(w.cfg.Broker).
+		SetClientID(fmt.Sprintf("opslog-tgt-%d", time.Now().UnixNano())).
+		SetCleanSession(true).
+		SetAutoReconnect(true).
+		SetConnectRetry(true).
+		SetConnectRetryInterval(30 * time.Second).
+		SetConnectTimeout(15 * time.Second).
+		SetOrderMatters(false)
+	// Re-subscribe on every connect, reconnects included: the session is clean,
+	// so the broker remembers nothing and a dropped link would otherwise come
+	// back up subscribed to nothing at all — a panel that goes quiet for ever
+	// while still saying "online".
+	opts.OnConnect = func(c mqtt.Client) {
+		w.mu.Lock()
+		w.subs = nil
+		target, mode := w.target, w.mode
+		w.mu.Unlock()
+		if err := w.resubscribe(c); err != nil {
+			w.cfg.Logf("pskr target: %v", err)
+		}
+		if target != "" {
+			go w.backfill(target, mode)
+		}
+	}
+	opts.OnConnectionLost = func(_ mqtt.Client, err error) {
+		w.cfg.Logf("pskr target: connection lost: %v (will retry)", err)
+	}
+	c := mqtt.NewClient(opts)
+	tok := c.Connect()
+	if !tok.WaitTimeout(15*time.Second) || tok.Error() != nil {
+		err := tok.Error()
+		if err == nil {
+			err = fmt.Errorf("timeout")
+		}
+		return nil, fmt.Errorf("pskr target: connect %s: %w", w.cfg.Broker, err)
+	}
+	return c, nil
+}
+
+func (w *Watcher) handle(_ mqtt.Client, m mqtt.Message) {
+	var s spot
+	if err := json.Unmarshal(m.Payload(), &s); err != nil {
+		return
+	}
+	if s.TxCall == "" || s.RxCall == "" {
+		return
+	}
+	s.TxCall = strings.ToUpper(s.TxCall)
+	s.RxCall = strings.ToUpper(s.RxCall)
+	s.TxGrid = strings.ToUpper(s.TxGrid)
+	s.RxGrid = strings.ToUpper(s.RxGrid)
+	s.at = time.Now()
+	w.mu.Lock()
+	w.spots = append(w.spots, s)
+	w.mu.Unlock()
+}
+
+// Stop drops the target and the connection. The window goes with it: it is
+// evidence about a station nobody is asking about any more.
+func (w *Watcher) Stop() {
+	w.mu.Lock()
+	c := w.client
+	w.client, w.target, w.band, w.subs, w.backfilled = nil, "", "", nil, ""
+	w.spots = nil
+	w.mu.Unlock()
+	if c != nil {
+		c.Disconnect(250)
+	}
+}
+
+// SetDial updates the frequency audio offsets are measured against.
+func (w *Watcher) SetDial(hz int64) {
+	if hz <= 0 {
+		return
+	}
+	w.mu.Lock()
+	w.dialHz = hz
+	w.mu.Unlock()
+}
+
+// SetOperator refreshes the operator's own callsign and grid. Called when the
+// station profile changes: every "near me" answer is measured from these, and a
+// stale pair would quietly measure them from somebody else's station.
+func (w *Watcher) SetOperator(call, grid string) {
+	w.mu.Lock()
+	w.cfg.MyCall = strings.ToUpper(strings.TrimSpace(call))
+	w.cfg.MyGrid = strings.ToUpper(strings.TrimSpace(grid))
+	w.mu.Unlock()
+}
+
+// Snapshot recomputes the analysis from the window.
+func (w *Watcher) Snapshot() Analysis {
+	// Due another look at the history? Checked here because this is what the
+	// panel calls every second; the query itself is rate-limited inside
+	// backfill, so this cannot turn into a request per poll.
+	w.mu.Lock()
+	if t, m := w.target, w.mode; t != "" && time.Since(w.backfilledAt) >= backfillEvery {
+		w.mu.Unlock()
+		go w.backfill(t, m)
+		w.mu.Lock()
+	}
+	defer w.mu.Unlock()
+
+	now := time.Now()
+	cutoff := now.Add(-window)
+	kept := w.spots[:0]
+	for _, s := range w.spots {
+		if s.at.After(cutoff) {
+			kept = append(kept, s)
+		}
+	}
+	w.spots = kept
+
+	a := Analysis{
+		Target: w.target,
+		Mode:   w.mode,
+		Online: w.client != nil && w.client.IsConnected(),
+		DialHz: w.dialHz,
+		Spots:  len(w.spots),
+	}
+	if w.target == "" {
+		return a
+	}
+
+	myCall := strings.ToUpper(strings.TrimSpace(w.cfg.MyCall))
+	myField := ""
+	if g := strings.ToUpper(strings.TrimSpace(w.cfg.MyGrid)); len(g) >= 2 {
+		myField = g[:2]
+	}
+	myCont := ""
+	if myField == "" && myCall != "" && w.cfg.Continent != nil {
+		myCont = strings.ToUpper(w.cfg.Continent(myCall))
+	}
+
+	// His square, taken from any report where he was transmitting. It is what
+	// "near him" is measured against, so without it that whole answer is
+	// unavailable rather than approximated.
+	for i := range w.spots {
+		if w.spots[i].TxCall == w.target && len(w.spots[i].TxGrid) >= 4 {
+			a.TargetGrid = w.spots[i].TxGrid[:4]
+		}
+	}
+
+	entry := func(call, grid string, s *spot) Entry {
+		off := 0
+		if w.dialHz > 0 {
+			off = int(s.Freq - w.dialHz)
+		}
+		return Entry{Call: call, Grid: grid, SNR: s.SNR, OffsetHz: off,
+			AgeSec: int(now.Sub(s.at).Seconds())}
+	}
+	// One entry per station, overwritten as newer reports arrive, so a station
+	// calling every cycle counts once and shows its latest report.
+	heardBy := map[string]Entry{}
+	heardNearMe := map[string]Entry{}
+	fromMyArea := map[string]Entry{}
+	decodedBy := map[string]Entry{}
+	nearHim := map[string]Entry{}
+	pileup := map[string]struct{}{}
+	pileupCutoff := now.Add(-pileupWindow)
+
+	type acc struct {
+		n   int
+		sum float64
+	}
+	bins := map[int]*acc{}
+	var lastHeMe *spot
+
+	near := func(theirGrid, call string) bool {
+		if myField != "" {
+			return strings.HasPrefix(strings.ToUpper(theirGrid), myField)
+		}
+		if myCont != "" && w.cfg.Continent != nil {
+			return strings.ToUpper(w.cfg.Continent(call)) == myCont
+		}
+		return false
+	}
+
+	for i := range w.spots {
+		s := &w.spots[i]
+
+		// He transmitted: somebody heard him.
+		if s.TxCall == w.target {
+			e := entry(s.RxCall, s.RxGrid, s)
+			heardBy[s.RxCall] = e
+			if near(s.RxGrid, s.RxCall) {
+				heardNearMe[s.RxCall] = e
+			}
+		}
+
+		// The operator transmitted and a station in the DX's own square heard
+		// it. That is a path to his region, proved without his help.
+		if a.TargetGrid != "" && myCall != "" && s.TxCall == myCall &&
+			strings.HasPrefix(s.RxGrid, a.TargetGrid) {
+			nearHim[s.RxCall] = entry(s.RxCall, s.RxGrid, s)
+		}
+
+		// He received: this is the pileup, the passband, and the answer.
+		if s.RxCall == w.target {
+			a.DecodesInWindow++
+			if s.TxCall == myCall {
+				if lastHeMe == nil || s.at.After(lastHeMe.at) {
+					lastHeMe = s
+				}
+				continue // the operator is not part of his own pileup
+			}
+			decodedBy[s.TxCall] = entry(s.TxCall, s.TxGrid, s)
+			if s.at.After(pileupCutoff) {
+				pileup[s.TxCall] = struct{}{}
+			}
+			if near(s.TxGrid, s.TxCall) {
+				fromMyArea[s.TxCall] = entry(s.TxCall, s.TxGrid, s)
+			}
+			if w.dialHz > 0 {
+				off := int(s.Freq - w.dialHz)
+				if off >= lowHz && off <= highHz {
+					edge := (off / binHz) * binHz
+					b := bins[edge]
+					if b == nil {
+						b = &acc{}
+						bins[edge] = b
+					}
+					b.n++
+					b.sum += float64(s.SNR)
+					if off > a.CeilingHz {
+						a.CeilingHz = off
+					}
+				}
+			}
+		}
+	}
+
+	if lastHeMe != nil {
+		a.HeMe = true
+		a.HeMeSeconds = int(now.Sub(lastHeMe.at).Seconds())
+		a.HeMeSNR = lastHeMe.SNR
+		if w.dialHz > 0 {
+			a.HeMeOffset = int(lastHeMe.Freq - w.dialHz)
+		}
+	}
+	a.TargetUploads = a.DecodesInWindow > 0
+	a.HeardByCount = len(heardBy)
+	a.HeardNearMe = len(heardNearMe)
+	a.HeardNearMeTop = top(heardNearMe, 5)
+	a.FromMyAreaCount = len(fromMyArea)
+	a.FromMyAreaTop = top(fromMyArea, 5)
+	a.PathOpen = a.FromMyAreaCount > 0
+	a.NearHimCount = len(nearHim)
+	a.NearHimTop = top(nearHim, 5)
+	a.DecodedByCount = len(decodedBy)
+	a.DecodedByTop = top(decodedBy, 10)
+	a.DecodedByCalls = make([]string, 0, len(decodedBy))
+	for c := range decodedBy {
+		a.DecodedByCalls = append(a.DecodedByCalls, c)
+	}
+	sort.Strings(a.DecodedByCalls)
+	a.PileupCount = len(pileup)
+
+	a.Bins = make([]Bin, 0, len(bins))
+	for edge, b := range bins {
+		avg := 0.0
+		if b.n > 0 {
+			avg = b.sum / float64(b.n)
+		}
+		a.Bins = append(a.Bins, Bin{OffsetHz: edge, Count: b.n, AvgSNR: avg})
+	}
+	sort.Slice(a.Bins, func(i, j int) bool { return a.Bins[i].OffsetHz < a.Bins[j].OffsetHz })
+	a.SuggestedOffset = suggestOffset(a.Bins, a.CeilingHz)
+	return a
+}
+
+// top returns the freshest entries from a per-callsign map, newest first.
+func top(m map[string]Entry, limit int) []Entry {
+	out := make([]Entry, 0, len(m))
+	for _, e := range m {
+		out = append(out, e)
+	}
+	sort.Slice(out, func(i, j int) bool { return out[i].AgeSec < out[j].AgeSec })
+	if len(out) > limit {
+		out = out[:limit]
+	}
+	return out
+}
+
+// suggestOffset picks an audio slot to call on.
+//
+// Below the CEILING, not below 4000 Hz. The ceiling is the highest offset he
+// has actually decoded, and it is the only evidence available about how wide
+// his receiver is set — plenty of stations run 2500 Hz. Suggesting 3400 Hz to
+// somebody whose passband stops at 2700 is advice to transmit into a filter.
+//
+// Two passes, and the second is the one that matters on a busy DX. Looking for
+// an empty run alone answered "nowhere" exactly when the answer was most
+// wanted: a hundred decodes across a 2800 Hz passband leave no run of clear
+// bins at all, and the panel drew a full histogram with no advice under it.
+// Failing a real gap, the quietest slot is still better than the one the
+// operator would have picked by eye.
+func suggestOffset(bins []Bin, ceiling int) int {
+	if ceiling < 1000 {
+		return 0
+	}
+	count := make(map[int]int, len(bins))
+	busy := make(map[int]bool, len(bins)*3)
+	for _, b := range bins {
+		count[b.OffsetHz] = b.Count
+		if b.Count > 0 {
+			// The neighbours too: FT8 is 50 Hz wide and the bins are 60, so a
+			// signal on a bin edge covers the next one as surely as its own.
+			busy[b.OffsetHz], busy[b.OffsetHz-binHz], busy[b.OffsetHz+binHz] = true, true, true
+		}
+	}
+	// From 1000 Hz up: below that is where every default transmit offset sits,
+	// so it is the most crowded part of the passband and the least useful advice.
+	const low = 1020
+	high := (ceiling / binHz) * binHz
+
+	// Pass 1 — the widest clear run, and call from its middle.
+	bestStart, bestLen, start, run := -1, 0, -1, 0
+	for edge := low; edge <= high; edge += binHz {
+		if busy[edge] {
+			start, run = -1, 0
+			continue
+		}
+		if start < 0 {
+			start = edge
+		}
+		run++
+		if run > bestLen {
+			bestStart, bestLen = start, run
+		}
+	}
+	if bestStart >= 0 && bestLen >= 2 {
+		return bestStart + bestLen*binHz/2
+	}
+
+	// Pass 2 — no clear run: the least busy slot. Walked from the top down, so
+	// a tie goes to the higher offset, which is the less crowded half of any
+	// passband and the half a pile-up leaves alone.
+	quietest, fewest := -1, 1<<30
+	for edge := high; edge >= low; edge -= binHz {
+		if c := count[edge]; c < fewest {
+			quietest, fewest = edge, c
+		}
+	}
+	if quietest < 0 {
+		return 0
+	}
+	// Never past the ceiling: the top bin CONTAINS it, so its middle can sit
+	// beyond the highest offset he has been shown to decode — which is the one
+	// thing this function exists to avoid.
+	if quietest+binHz/2 > ceiling {
+		quietest -= binHz
+	}
+	if quietest < low {
+		return 0
+	}
+	return quietest + binHz/2
+}
+
+// bandTag names the band a dial frequency is on, in PSK Reporter's own
+// vocabulary ("20m"). Only used by the band-wide scope, to subscribe to one
+// band instead of all of them.
+func bandTag(hz int64) string {
+	khz := hz / 1000
+	switch {
+	case khz >= 1800 && khz <= 2000:
+		return "160m"
+	case khz >= 3500 && khz <= 4000:
+		return "80m"
+	case khz >= 5250 && khz <= 5450:
+		return "60m"
+	case khz >= 7000 && khz <= 7300:
+		return "40m"
+	case khz >= 10100 && khz <= 10150:
+		return "30m"
+	case khz >= 14000 && khz <= 14350:
+		return "20m"
+	case khz >= 18068 && khz <= 18168:
+		return "17m"
+	case khz >= 21000 && khz <= 21450:
+		return "15m"
+	case khz >= 24890 && khz <= 24990:
+		return "12m"
+	case khz >= 28000 && khz <= 29700:
+		return "10m"
+	case khz >= 50000 && khz <= 54000:
+		return "6m"
+	case khz >= 70000 && khz <= 70500:
+		return "4m"
+	case khz >= 144000 && khz <= 148000:
+		return "2m"
+	case khz >= 430000 && khz <= 440000:
+		return "70cm"
+	}
+	return ""
+}
+
+// ── REST backfill ─────────────────────────────────────────────────────────
+//
+// The narrow subscription starts empty, and five minutes of waiting is not an
+// answer to "should I call this station now". PSK Reporter's query API hands
+// back the last quarter hour in one request, so the window is populated before
+// the first cycle finishes.
+//
+// Fetched ONCE per target. The panel polls every second, and a query per poll
+// is what gets an application rate-limited off the service for everyone.
+
+type pskrReport struct {
+	Sender        string `xml:"senderCallsign,attr"`
+	SenderGrid    string `xml:"senderLocator,attr"`
+	Receiver      string `xml:"receiverCallsign,attr"`
+	ReceiverGrid  string `xml:"receiverLocator,attr"`
+	Frequency     string `xml:"frequency,attr"`
+	SNR           string `xml:"sNR,attr"`
+	Mode          string `xml:"mode,attr"`
+	FlowStartSecs string `xml:"flowStartSeconds,attr"`
+}
+
+type pskrReports struct {
+	XMLName xml.Name     `xml:"receptionReports"`
+	Reports []pskrReport `xml:"receptionReport"`
+}
+
+// backfill fetches the last quarter hour for a target, in BOTH directions.
+//
+// Two queries, because the panel asks two questions and the service answers
+// them separately: what the target RECEIVED (his pileup, the passband, whether
+// he decoded us) and what he TRANSMITTED (who is hearing him, and how much of
+// that is near us). The live feed fills both eventually; a target picked ten
+// seconds ago has neither, and with the narrow subscription there is nothing in
+// the window at all until his own uploader next reports.
+//
+// Fetched ONCE per target. The panel polls every second, and a query per poll
+// is what gets an application rate-limited off the service for everyone.
+func (w *Watcher) backfill(target, mode string) {
+	w.mu.Lock()
+	// Once per target, then no more often than the refresh interval.
+	//
+	// The live feed alone lags by design: PSK Reporter's uploaders batch their
+	// reports, most of them every five minutes, so between two batches the
+	// window only holds what happened to have been sent. Asking the history
+	// again at that same cadence keeps it as full as a program that has been
+	// subscribed for an hour — which is the whole of the difference an operator
+	// sees when comparing the two side by side.
+	if w.backfilled == target && time.Since(w.backfilledAt) < backfillEvery {
+		w.mu.Unlock()
+		return
+	}
+	w.backfilled, w.backfilledAt = target, time.Now()
+	w.mu.Unlock()
+
+	got := 0
+	for _, dir := range []struct{ param, what string }{
+		{"receiverCallsign", "decoded by him"},
+		{"senderCallsign", "who is hearing him"},
+	} {
+		q := url.Values{}
+		q.Set(dir.param, target)
+		q.Set("mode", mode)
+		q.Set("flowStartSeconds", strconv.Itoa(-900))
+		q.Set("nolocator", "0")
+		// The pskquery5 endpoint rather than retrieve.pskreporter.info: this is
+		// the one DXHunter has been using against the live service, and a
+		// backfill that silently returns nothing is worse than none at all.
+		req, err := http.NewRequest("GET", "https://pskreporter.info/cgi-bin/pskquery5.pl?"+q.Encode(), nil)
+		if err != nil {
+			continue
+		}
+		req.Header.Set("User-Agent", "OpsLog (PSK Reporter target analysis)")
+		resp, err := (&http.Client{Timeout: 15 * time.Second}).Do(req)
+		if err != nil {
+			w.cfg.Logf("pskr target: history for %s (%s) unavailable: %v", target, dir.what, err)
+			continue
+		}
+		if resp.StatusCode != http.StatusOK {
+			// 503 is the service saying "too often". Worth a line, because the
+			// panel then fills at the live feed's pace and looks slow for no
+			// visible reason.
+			w.cfg.Logf("pskr target: history for %s (%s) refused (HTTP %d)", target, dir.what, resp.StatusCode)
+			resp.Body.Close()
+			continue
+		}
+		var rr pskrReports
+		err = xml.NewDecoder(resp.Body).Decode(&rr)
+		resp.Body.Close()
+		if err != nil {
+			continue
+		}
+		got += w.absorb(target, rr.Reports)
+	}
+	if got > 0 {
+		w.cfg.Logf("pskr target: %d recent reports for %s from the history queries", got, target)
+	}
+}
+
+// absorb adds fetched reports to the window, skipping what the live feed has
+// already delivered. Without the check the same report arrives twice — once by
+// MQTT, once by query — and every count that is not per-callsign doubles: the
+// decode total, and the bars of the passband.
+func (w *Watcher) absorb(target string, reports []pskrReport) int {
+	now := time.Now()
+	w.mu.Lock()
+	defer w.mu.Unlock()
+	// Still the same target? The operator may have moved on while this was in
+	// flight, and dropping a stale answer into the window would attribute one
+	// station's pileup to another.
+	if w.target != target {
+		return 0
+	}
+	type key struct {
+		tx, rx string
+		hz     int64
+	}
+	seen := make(map[key]bool, len(w.spots))
+	for i := range w.spots {
+		seen[key{w.spots[i].TxCall, w.spots[i].RxCall, w.spots[i].Freq}] = true
+	}
+	added := 0
+	for _, r := range reports {
+		hz, _ := strconv.ParseInt(r.Frequency, 10, 64)
+		snr, _ := strconv.Atoi(r.SNR)
+		k := key{strings.ToUpper(r.Sender), strings.ToUpper(r.Receiver), hz}
+		if hz == 0 || seen[k] {
+			continue
+		}
+		at := now
+		if secs, err := strconv.ParseInt(r.FlowStartSecs, 10, 64); err == nil {
+			switch {
+			case secs > 1_000_000_000:
+				at = time.Unix(secs, 0) // an absolute time
+			case secs < 0:
+				at = now.Add(time.Duration(secs) * time.Second) // an age in seconds
+			}
+		}
+		// Stamped with its REAL age, so it ages out of the window on its own and
+		// a quarter-hour-old decode is never read as "he heard you just now".
+		if at.Before(now.Add(-window)) {
+			continue
+		}
+		seen[k] = true
+		w.spots = append(w.spots, spot{
+			Freq: hz, Mode: strings.ToUpper(r.Mode), SNR: snr,
+			TxCall: k.tx, TxGrid: strings.ToUpper(r.SenderGrid),
+			RxCall: k.rx, RxGrid: strings.ToUpper(r.ReceiverGrid),
+			at: at,
+		})
+		added++
+	}
+	return added
+}

internal/pskrtgt/pskrtgt_test.go

@@ -0,0 +1,181 @@
+package pskrtgt
+
+import (
+	"testing"
+	"time"
+)
+
+// feed builds a watcher with a window already populated, so the analysis can be
+// pinned without a broker.
+func feed(target string, spots ...spot) *Watcher {
+	w := New(Config{MyCall: "F4BPO", MyGrid: "JN36BQ"})
+	w.target, w.mode, w.dialHz = target, "FT8", 14_074_000
+	w.spots = spots
+	return w
+}
+
+func rep(tx, txGrid, rx, rxGrid string, snr int, offset int, ago time.Duration) spot {
+	return spot{
+		TxCall: tx, TxGrid: txGrid, RxCall: rx, RxGrid: rxGrid,
+		SNR: snr, Freq: 14_074_000 + int64(offset), at: time.Now().Add(-ago),
+	}
+}
+
+func TestHeardYouIsTheOperatorsOwnCallOnly(t *testing.T) {
+	w := feed("YI5RLS",
+		rep("F4BPO", "JN36", "YI5RLS", "LM43", -14, 1200, 20*time.Second),
+		rep("F4XYZ", "JN36", "YI5RLS", "LM43", -8, 900, 30*time.Second),
+	)
+	a := w.Snapshot()
+	if !a.HeMe {
+		t.Fatal("the DX decoded the operator and the panel says he did not")
+	}
+	if a.HeMeSNR != -14 || a.HeMeOffset != 1200 {
+		t.Errorf("he_me = %d dB @ %d Hz, want -14 dB @ 1200 Hz", a.HeMeSNR, a.HeMeOffset)
+	}
+	// The operator is not part of the pileup he is calling into: counting
+	// yourself as competition is how a "1 caller" band looks contested.
+	if a.PileupCount != 1 {
+		t.Errorf("pileup = %d, want 1 (the other station only)", a.PileupCount)
+	}
+	// F4XYZ shares the operator's Maidenhead field, so the path from this
+	// region is demonstrably open.
+	if !a.PathOpen || a.FromMyAreaCount != 1 {
+		t.Errorf("from my area = %d (open=%v), want 1 open", a.FromMyAreaCount, a.PathOpen)
+	}
+}
+
+func TestNearHimNeedsHisSquareAndTheOperatorsCall(t *testing.T) {
+	// He transmits (so his square is known), and a station in that square hears
+	// the operator. He himself has decoded nobody.
+	w := feed("YI5RLS",
+		rep("YI5RLS", "LM43", "OH5CX", "KP30", -3, 0, 40*time.Second),
+		rep("F4BPO", "JN36", "YI9XY", "LM43CC", -19, 1500, 25*time.Second),
+	)
+	a := w.Snapshot()
+	if a.TargetGrid != "LM43" {
+		t.Fatalf("his square = %q, want LM43", a.TargetGrid)
+	}
+	if a.NearHimCount != 1 || len(a.NearHimTop) != 1 || a.NearHimTop[0].Call != "YI9XY" {
+		t.Errorf("near him = %d %v, want the one receiver in his square", a.NearHimCount, a.NearHimTop)
+	}
+	// He uploads nothing: the panel must be able to say so, or an operator
+	// reads an empty panel as a closed band.
+	if a.TargetUploads {
+		t.Error("he received nothing in the window, yet the panel claims he uploads")
+	}
+	if a.HeMe {
+		t.Error("nobody reported HIM decoding the operator")
+	}
+}
+
+func TestWindowDropsWhatIsTooOld(t *testing.T) {
+	// Inside the window: a report from six minutes ago is still evidence. Five
+	// minutes was too short — measured against DXHunter on the same station at
+	// the same moment, it hid a third of the decodes and a co-area station.
+	w := feed("YI5RLS",
+		rep("F4BPO", "JN36", "YI5RLS", "LM43", -14, 1200, 6*time.Minute),
+	)
+	if a := w.Snapshot(); !a.HeMe {
+		t.Errorf("a six-minute-old report was dropped from a ten-minute window: %+v", a)
+	}
+	// Past it, it goes.
+	w = feed("YI5RLS",
+		rep("F4BPO", "JN36", "YI5RLS", "LM43", -14, 1200, 11*time.Minute),
+	)
+	if a := w.Snapshot(); a.HeMe || a.Spots != 0 {
+		t.Errorf("an eleven-minute-old report survived: %+v", a)
+	}
+}
+
+func TestSuggestOffsetAvoidsTheOccupiedBinsAndTheCeiling(t *testing.T) {
+	// Busy from 1000 to 1500 Hz, empty from 1560 to 2400, ceiling 2400.
+	bins := []Bin{}
+	for hz := 1020; hz <= 1500; hz += binHz {
+		bins = append(bins, Bin{OffsetHz: hz, Count: 3})
+	}
+	bins = append(bins, Bin{OffsetHz: 2400, Count: 1})
+	got := suggestOffset(bins, 2400)
+	if got < 1620 || got > 2340 {
+		t.Errorf("suggested %d Hz, want somewhere in the empty 1560-2400 run", got)
+	}
+	// A passband with no gap at all still gets an answer — the quietest slot,
+	// which is what an operator would look for by eye. What it must never do is
+	// advise ABOVE the ceiling: transmitting past the DX's filter is the one
+	// outcome worse than picking a busy slot.
+	if got := suggestOffset(bins, 1500); got <= 1000 || got > 1500 {
+		t.Errorf("suggested %d Hz with a full 1500 Hz passband, want a slot inside it", got)
+	}
+	if got := suggestOffset(nil, 0); got != 0 {
+		t.Errorf("suggested %d Hz with no data at all, want none", got)
+	}
+}
+
+func TestTopicsFollowTheScope(t *testing.T) {
+	w := New(Config{MyCall: "F4BPO", Scope: ScopeTarget})
+	w.target, w.mode, w.band = "YI5RLS", "FT8", "20m"
+	got := w.topicsLocked()
+	want := []string{
+		"pskr/filter/v2/+/FT8/YI5RLS/#",
+		"pskr/filter/v2/+/FT8/+/YI5RLS/#",
+		"pskr/filter/v2/+/FT8/F4BPO/#",
+	}
+	if len(got) != len(want) {
+		t.Fatalf("narrow scope = %v, want %v", got, want)
+	}
+	for i := range want {
+		if got[i] != want[i] {
+			t.Errorf("filter %d = %q, want %q", i, got[i], want[i])
+		}
+	}
+
+	w.cfg.Scope = ScopeBand
+	if got := w.topicsLocked(); len(got) != 1 || got[0] != "pskr/filter/v2/20m/FT8/#" {
+		t.Errorf("band scope = %v, want the one band-wide filter", got)
+	}
+}
+
+// The case reported from the air: a busy DX, 103 decodes across a 2805 Hz
+// passband, and the panel drew the whole histogram with no advice under it.
+func TestACrowdedPassbandStillGetsAnAnswer(t *testing.T) {
+	// Every bin from 1020 to 2800 occupied — no clear run anywhere, and the
+	// quietest slot is the answer.
+	bins := []Bin{}
+	for hz := 1020; hz <= 2760; hz += binHz {
+		n := 5
+		if hz == 2400 { // one slot noticeably quieter than the rest
+			n = 1
+		}
+		bins = append(bins, Bin{OffsetHz: hz, Count: n})
+	}
+	got := suggestOffset(bins, 2805)
+	if got == 0 {
+		t.Fatal("no advice on a full passband — this is exactly when it is wanted")
+	}
+	if got < 2400 || got > 2460 {
+		t.Errorf("suggested %d Hz, want the quietest slot around 2400", got)
+	}
+}
+
+// Under the band-wide scope the window is the BAND's, not the target's: it is
+// every FTx report on it, filtered by target only when the analysis is drawn.
+// Clearing it on a target change threw away an hour of accumulated evidence at
+// the exact moment it was worth something — the operator clicking a decode to
+// ask "can he hear me" saw the report count drop to zero.
+func TestBandScopeKeepsItsWindowAcrossATargetChange(t *testing.T) {
+	for _, tc := range []struct {
+		scope Scope
+		keep  bool
+	}{{ScopeBand, true}, {ScopeTarget, false}} {
+		w := &Watcher{cfg: Config{Scope: tc.scope, Logf: func(string, ...any) {}}}
+		w.target, w.mode = "OLD", "FT8"
+		w.spots = []spot{{TxCall: "OLD", RxCall: "F4BPO", at: time.Now()}}
+
+		w.dropWindowOfPreviousTarget()
+		w.target = "NEW"
+
+		if got := len(w.spots) > 0; got != tc.keep {
+			t.Errorf("%s scope: window kept = %v, want %v", tc.scope, got, tc.keep)
+		}
+	}
+}

internal/rigctld/rigctld.go

@@ -262,7 +262,18 @@ func (s *Server) serve(c net.Conn) {
 			return
 		}
 		req := strings.TrimSpace(line)
+		started := time.Now()
 		resp, quit := s.handle(req)
+		// A command the radio took a visible time to accept is worth a line of its
+		// own, always — not behind the trace switch below.
+		//
+		// This is the shape every "WSJT-X takes ten seconds to change band" report
+		// has: the client is waiting on us, we are waiting on the rig, and the log
+		// showed neither. Which command, and how long, is the whole diagnosis —
+		// and one second is already far outside anything a healthy link does.
+		if took := time.Since(started); took > time.Second && req != "" {
+			s.log("rigctld: %q took %s — the radio was slow to answer, the client waited that long", req, took.Round(10*time.Millisecond))
+		}
 		// The whole exchange, when tracing is on.
 		//
 		// Only PTT transitions were ever recorded, so when JTDX aborted a
@@ -362,6 +373,21 @@ func (s *Server) handle(line string) (resp string, quit bool) {
 		if len(args) < 1 {
 			return rprt(-1), false
 		}
+		// Only touch the radio on a CHANGE, the same rule set_ptt above follows.
+		//
+		// WSJT-X restates the mode on every band change and after every transmit,
+		// almost always the mode the rig is already in. On a native backend that
+		// is not free: an Icom set_mode is the mode frame, the data-mode frame and
+		// a readback to check the rig honoured them, each a round trip — over a
+		// remote CI-V link that is seconds, spent to arrive where we already were,
+		// with the client blocked on the answer the whole time.
+		//
+		// Compared in the CLIENT's own vocabulary — what "m" would report against
+		// what it just asked for — so nothing it can observe changes. A rig whose
+		// mode we do not know yet (empty) is never assumed.
+		if cur := s.rig.Mode(); cur != "" && adifToHamlib(cur) == adifToHamlib(hamlibToADIF(args[0])) {
+			return rprt(0), false
+		}
 		if err := s.rig.SetMode(hamlibToADIF(args[0])); err != nil {
 			s.log("rigctld: set_mode %q failed: %v", args[0], err)
 			return rprt(-9), false

internal/rigctld/rigctld_test.go

@@ -332,3 +332,31 @@ func TestModeMapping(t *testing.T) {
 		}
 	}
 }
+
+// A mode the rig is already in must not reach it. WSJT-X restates the mode on
+// every band change, and on a native backend each restatement is several CI-V
+// round trips with the client blocked on the answer.
+func TestSetModeSkipsWhenUnchanged(t *testing.T) {
+	cases := []struct {
+		rig  string // what the rig reports (ADIF)
+		ask  string // what the client asks for (hamlib)
+		want int    // times the radio should be touched
+	}{
+		{"CW", "CW", 0},
+		{"SSB", "USB", 0},    // "SSB" is reported as USB to a client
+		{"FT8", "PKTUSB", 0}, // data rides on USB; both name it PKTUSB
+		{"USB", "PKTUSB", 1}, // out of data mode into it: a real change
+		{"CW", "USB", 1},     // a real change
+		{"", "USB", 1},       // mode unknown: never assume
+	}
+	for _, c := range cases {
+		f := &fakeRig{mode: c.rig, freq: 14074000}
+		s := New(4532, f, nil)
+		if got, _ := s.handle("M " + c.ask); got != "RPRT 0\n" {
+			t.Fatalf("set_mode %q on a rig in %q = %q", c.ask, c.rig, got)
+		}
+		if n := len(f.setModes); n != c.want {
+			t.Errorf("rig in %q, client asked %q: rig touched %d times, want %d", c.rig, c.ask, n, c.want)
+		}
+	}
+}

internal/rotator/easycomm/easycomm.go

@@ -0,0 +1,369 @@
+// Package easycomm drives azimuth/elevation rotator controllers that speak
+// EasyComm II, over a raw TCP socket or a serial port.
+//
+// EasyComm is what satellite rotator controllers agreed on: SatPC32, Gpredict
+// and Hamlib all speak it, so a controller that works with any of those works
+// here. The dialect matters less than it looks — every command is a two-letter
+// name with a number stuck to it, on one line, and a controller that does not
+// recognise one ignores it.
+//
+// The subset used:
+//
+//	AZ123.4 EL45.0<LF>  point there
+//	AZ EL<LF>           ask where it is — the reply is the same shape
+//	SA SE<LF>           stop both axes
+//
+// Not every controller ANSWERS. A great many EasyComm boxes — the Arduino
+// trackers above all — accept commands and never say a word back, which is
+// perfectly legal in EasyComm I and common in II. So a silent controller is not
+// treated as a broken one: the last commanded position is reported instead, and
+// the rotator keeps being driven. Refusing to work with a write-only controller
+// would rule out half the satellite stations in the hobby.
+package easycomm
+
+import (
+	"fmt"
+	"io"
+	"math"
+	"net"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"go.bug.st/serial"
+)
+
+const (
+	dialTimeout = 3 * time.Second
+	ioTimeout   = 1500 * time.Millisecond
+	// replyWait is how long a query waits before deciding the controller is one
+	// of the silent ones. Short: this runs once a second inside a pass, and a
+	// controller that is going to answer answers in milliseconds.
+	replyWait = 400 * time.Millisecond
+)
+
+// Client is one rotator controller. Exactly one of (Host, Port) or ComPort is
+// used.
+type Client struct {
+	Host    string
+	Port    int
+	ComPort string
+	Baud    int
+	// MaxAz is how far the rotator turns: 360 or 450. A 450° rotator can follow
+	// a pass straight through north without unwinding, which is the difference
+	// between hearing the whole of an overhead pass and losing the middle of it.
+	MaxAz int
+
+	mu sync.Mutex
+	// lastAz/lastEl are what was last commanded — the answer for a controller
+	// that does not talk back.
+	lastAz, lastEl float64
+	commanded      bool
+	// silent latches once a query has gone unanswered. Without it, a write-only
+	// controller costs a 400 ms wait on every single poll of a pass.
+	silent bool
+}
+
+// New builds a TCP client. There is no standard port; 4533 is Hamlib's rotctld
+// convention and the usual default in the controllers' own setup screens.
+func New(host string, port int, maxAz int) *Client {
+	if strings.TrimSpace(host) == "" {
+		host = "127.0.0.1"
+	}
+	if port <= 0 || port > 65535 {
+		port = 4533
+	}
+	return &Client{Host: host, Port: port, MaxAz: normMaxAz(maxAz)}
+}
+
+// NewSerial builds a serial client.
+func NewSerial(comPort string, baud int, maxAz int) *Client {
+	if baud <= 0 {
+		baud = 9600
+	}
+	return &Client{ComPort: comPort, Baud: baud, MaxAz: normMaxAz(maxAz)}
+}
+
+func normMaxAz(v int) int {
+	if v == 450 {
+		return 450
+	}
+	return 360
+}
+
+// Point commands the rotator to an azimuth and elevation.
+//
+// The azimuth is given in the rotator's own terms: on a 450° machine an
+// azimuth past 360 is a real, reachable position, and asking for 010 when the
+// rotator is sitting at 370 would send it the long way round through the whole
+// scale — three quarters of a turn, in the middle of a pass, with the antenna
+// pointing at the ground for most of it.
+func (c *Client) Point(az, el float64) error {
+	az = c.wrapAz(az)
+	el = clamp(el, 0, 180)
+	if err := c.send(fmt.Sprintf("AZ%.1f EL%.1f", az, el), false); err != nil {
+		return err
+	}
+	c.mu.Lock()
+	c.lastAz, c.lastEl, c.commanded = az, el, true
+	c.mu.Unlock()
+	return nil
+}
+
+// Stop halts both axes.
+func (c *Client) Stop() error { return c.send("SA SE", false) }
+
+// Heading is where the rotator says it is.
+//
+// live is false when the answer is the last commanded position rather than a
+// reading — the caller shows that differently, because "where I told it to go"
+// and "where it is" are not the same claim and a stuck rotator must not be able
+// to hide behind the first.
+func (c *Client) Heading() (az, el float64, live bool, err error) {
+	c.mu.Lock()
+	silent, la, le, commanded := c.silent, c.lastAz, c.lastEl, c.commanded
+	c.mu.Unlock()
+	if silent {
+		if !commanded {
+			return 0, 0, false, fmt.Errorf("easycomm: the controller does not report its position")
+		}
+		return la, le, false, nil
+	}
+	line, err := c.query("AZ EL")
+	if err != nil {
+		// One silence is enough: a controller either answers or it does not, and
+		// this runs every second for the length of a pass.
+		c.mu.Lock()
+		c.silent = true
+		c.mu.Unlock()
+		if commanded {
+			return la, le, false, nil
+		}
+		return 0, 0, false, err
+	}
+	a, e, ok := parseHeading(line)
+	if !ok {
+		c.mu.Lock()
+		c.silent = true
+		c.mu.Unlock()
+		if commanded {
+			return la, le, false, nil
+		}
+		return 0, 0, false, fmt.Errorf("easycomm: could not read %q", line)
+	}
+	return a, e, true, nil
+}
+
+// wrapAz brings an azimuth into what this rotator can reach.
+//
+// On a 360° machine that is a plain modulo. On a 450° one the extra 90° is an
+// OVERLAP — 370 and 10 are the same direction — and which of the two to use is
+// decided by whichever is nearer where the rotator already is, so a pass
+// crossing north continues instead of unwinding.
+func (c *Client) wrapAz(az float64) float64 {
+	az = math.Mod(az, 360)
+	if az < 0 {
+		az += 360
+	}
+	if c.MaxAz != 450 {
+		return az
+	}
+	c.mu.Lock()
+	cur, known := c.lastAz, c.commanded
+	c.mu.Unlock()
+	if !known {
+		return az
+	}
+	alt := az + 360
+	if alt > 450 {
+		return az
+	}
+	if math.Abs(alt-cur) < math.Abs(az-cur) {
+		return alt
+	}
+	return az
+}
+
+// ── Transport ───────────────────────────────────────────────────────────────
+
+type heldPort struct {
+	p        serial.Port
+	openedAt time.Time
+}
+
+var (
+	portsMu   sync.Mutex
+	openPorts = map[string]*heldPort{}
+)
+
+// bootSettle: an Arduino-based controller resets when its serial port is
+// opened, and its bootloader then holds the processor for a second or more. A
+// command sent into that window is simply lost — which is how a controller that
+// answers a terminal perfectly reports nothing here.
+const bootSettle = 2 * time.Second
+
+func acquire(com string, baud int) (*heldPort, error) {
+	portsMu.Lock()
+	defer portsMu.Unlock()
+	if h, ok := openPorts[com]; ok && h.p != nil {
+		return h, nil
+	}
+	if baud <= 0 {
+		baud = 9600
+	}
+	sp, err := serial.Open(com, &serial.Mode{BaudRate: baud})
+	if err != nil {
+		return nil, fmt.Errorf("open rotator %s @ %d baud: %w", com, baud, err)
+	}
+	_ = sp.SetReadTimeout(150 * time.Millisecond)
+	h := &heldPort{p: sp, openedAt: time.Now()}
+	openPorts[com] = h
+	return h, nil
+}
+
+func drop(com string) {
+	portsMu.Lock()
+	defer portsMu.Unlock()
+	if h, ok := openPorts[com]; ok {
+		if h.p != nil {
+			_ = h.p.Close()
+		}
+		delete(openPorts, com)
+	}
+}
+
+// Close releases the serial port. TCP dials per command and holds nothing.
+func (c *Client) Close() {
+	if c.ComPort != "" {
+		drop(c.ComPort)
+	}
+}
+
+func (c *Client) send(cmd string, wantReply bool) error {
+	_, err := c.exchange(cmd, wantReply)
+	return err
+}
+
+func (c *Client) query(cmd string) (string, error) { return c.exchange(cmd, true) }
+
+func (c *Client) exchange(cmd string, wantReply bool) (string, error) {
+	var conn io.ReadWriteCloser
+	if c.ComPort != "" {
+		h, err := acquire(c.ComPort, c.Baud)
+		if err != nil {
+			return "", err
+		}
+		if wait := bootSettle - time.Since(h.openedAt); wait > 0 {
+			time.Sleep(wait)
+		}
+		conn = h.p
+		drain(h.p)
+	} else {
+		nc, err := net.DialTimeout("tcp", net.JoinHostPort(c.Host, strconv.Itoa(c.Port)), dialTimeout)
+		if err != nil {
+			return "", fmt.Errorf("connect rotator %s:%d: %w", c.Host, c.Port, err)
+		}
+		_ = nc.SetDeadline(time.Now().Add(ioTimeout))
+		defer nc.Close()
+		conn = nc
+	}
+	// LF, not CR: EasyComm's own documents use a line feed, and the controllers
+	// that want CR accept either. The reverse is not true of every Arduino
+	// sketch out there.
+	if _, err := conn.Write([]byte(cmd + "\n")); err != nil {
+		if c.ComPort != "" {
+			drop(c.ComPort)
+		}
+		return "", fmt.Errorf("send %q: %w", cmd, err)
+	}
+	if !wantReply {
+		return "", nil
+	}
+	buf := make([]byte, 128)
+	var sb strings.Builder
+	deadline := time.Now().Add(replyWait)
+	for time.Now().Before(deadline) {
+		n, err := conn.Read(buf)
+		if n > 0 {
+			sb.Write(buf[:n])
+			if strings.ContainsAny(sb.String(), "\r\n") {
+				break
+			}
+		}
+		if err != nil {
+			break
+		}
+	}
+	line := strings.TrimSpace(sb.String())
+	if line == "" {
+		return "", fmt.Errorf("no reply to %q", cmd)
+	}
+	return line, nil
+}
+
+func drain(sp serial.Port) {
+	buf := make([]byte, 256)
+	for {
+		n, err := sp.Read(buf)
+		if n == 0 || err != nil {
+			return
+		}
+	}
+}
+
+// parseHeading reads a controller's answer.
+//
+// The shapes in the wild differ more than the specification suggests —
+// "AZ123.4 EL45.0", "AZ=123.4 EL=45.0", "+123.4+045.0", lower case, tabs — so
+// this looks for the two labels and takes the number attached to each rather
+// than trying to match a whole line.
+func parseHeading(line string) (az, el float64, ok bool) {
+	up := strings.ToUpper(line)
+	az, aok := numberAfter(up, "AZ")
+	el, eok := numberAfter(up, "EL")
+	if !aok {
+		return 0, 0, false
+	}
+	// Elevation missing is not a broken reply: an azimuth-only controller
+	// answering an AZ EL query says what it has.
+	if !eok {
+		el = 0
+	}
+	return az, el, true
+}
+
+func numberAfter(s, label string) (float64, bool) {
+	i := strings.Index(s, label)
+	if i < 0 {
+		return 0, false
+	}
+	rest := strings.TrimLeft(s[i+len(label):], " \t=:")
+	end := 0
+	for end < len(rest) {
+		ch := rest[end]
+		if (ch >= '0' && ch <= '9') || ch == '.' || ((ch == '-' || ch == '+') && end == 0) {
+			end++
+			continue
+		}
+		break
+	}
+	if end == 0 {
+		return 0, false
+	}
+	v, err := strconv.ParseFloat(strings.TrimSuffix(rest[:end], "."), 64)
+	if err != nil {
+		return 0, false
+	}
+	return v, true
+}
+
+func clamp(v, lo, hi float64) float64 {
+	if v < lo {
+		return lo
+	}
+	if v > hi {
+		return hi
+	}
+	return v
+}

internal/rotator/easycomm/easycomm_test.go

@@ -0,0 +1,92 @@
+package easycomm
+
+import "testing"
+
+// Every one of these is a shape a real controller has been seen to answer with.
+// The point of the parser is that none of them is special-cased.
+func TestParseHeading(t *testing.T) {
+	for _, tc := range []struct {
+		line   string
+		az, el float64
+		ok     bool
+	}{
+		{"AZ123.4 EL45.0", 123.4, 45, true},
+		{"AZ=123.4 EL=45.0", 123.4, 45, true},
+		{"az 123.4 el 45.0", 123.4, 45, true},
+		{"AZ123.4\tEL45.0\r\n", 123.4, 45, true},
+		{"AZ012.0 EL000.0", 12, 0, true},
+		{"AZ370.5 EL05.5", 370.5, 5.5, true},
+		{"AZ123.4", 123.4, 0, true}, // azimuth-only controller
+		{"RPRT 0", 0, 0, false},
+		{"", 0, 0, false},
+	} {
+		az, el, ok := parseHeading(tc.line)
+		if ok != tc.ok {
+			t.Errorf("%q: ok=%v, wanted %v", tc.line, ok, tc.ok)
+			continue
+		}
+		if ok && (az != tc.az || el != tc.el) {
+			t.Errorf("%q: got %.1f/%.1f, wanted %.1f/%.1f", tc.line, az, el, tc.az, tc.el)
+		}
+	}
+}
+
+// The 450° overlap is the whole reason a satellite rotator is worth having: a
+// pass crossing north must continue past 360 instead of unwinding through the
+// entire scale with the antenna sweeping the ground.
+func TestWrapAz450(t *testing.T) {
+	c := &Client{MaxAz: 450}
+	// Nothing commanded yet: no history to be near, so the plain bearing.
+	if got := c.wrapAz(10); got != 10 {
+		t.Errorf("first move: got %.1f, wanted 10", got)
+	}
+	c.lastAz, c.commanded = 350, true
+	// Crossing north: 370 is 20° away, 10 is 340° away.
+	if got := c.wrapAz(10); got != 370 {
+		t.Errorf("crossing north from 350: got %.1f, wanted 370", got)
+	}
+	// Coming back down the same way, the overlap stays the near answer.
+	c.lastAz = 370
+	if got := c.wrapAz(350); got != 350 {
+		t.Errorf("back from 370: got %.1f, wanted 350", got)
+	}
+	// Beyond the rotator's reach there is no overlap to use.
+	c.lastAz = 440
+	if got := c.wrapAz(100); got != 100 {
+		t.Errorf("past the end of the scale: got %.1f, wanted 100", got)
+	}
+}
+
+func TestWrapAz360(t *testing.T) {
+	c := &Client{MaxAz: 360}
+	c.lastAz, c.commanded = 350, true
+	if got := c.wrapAz(10); got != 10 {
+		t.Errorf("a 360 rotator has no overlap: got %.1f, wanted 10", got)
+	}
+	if got := c.wrapAz(-10); got != 350 {
+		t.Errorf("negative bearing: got %.1f, wanted 350", got)
+	}
+	if got := c.wrapAz(725); got != 5 {
+		t.Errorf("two turns and five degrees: got %.1f, wanted 5", got)
+	}
+}
+
+// A controller that never answers must not be treated as a broken one: the last
+// commanded position is reported, marked as not live.
+func TestSilentControllerReportsCommanded(t *testing.T) {
+	c := &Client{MaxAz: 360, silent: true}
+	if _, _, _, err := c.Heading(); err == nil {
+		t.Error("a silent controller with nothing commanded should say it cannot report")
+	}
+	c.lastAz, c.lastEl, c.commanded = 120, 30, true
+	az, el, live, err := c.Heading()
+	if err != nil {
+		t.Fatalf("after a command: %v", err)
+	}
+	if live {
+		t.Error("a commanded position must not be reported as a live reading")
+	}
+	if az != 120 || el != 30 {
+		t.Errorf("got %.1f/%.1f, wanted 120/30", az, el)
+	}
+}

internal/rotator/gs232/gs232.go

@@ -28,6 +28,7 @@ import (
 	"regexp"
 	"strconv"
 	"strings"
+	"sync"
 	"time"
 
 	"go.bug.st/serial"
@@ -71,32 +72,99 @@ func NewSerial(comPort string, baud int) *Client {
 	return &Client{ComPort: comPort, Baud: baud}
 }
 
-// roundTrip opens a connection (TCP or serial per the client's config), sends
-// one CR-terminated command and (when wantReply) reads one CR/LF-terminated
-// reply line.
-func (c *Client) roundTrip(cmd string, wantReply bool) (string, error) {
-	var conn io.ReadWriteCloser
-	if c.ComPort != "" {
-		baud := c.Baud
+// bootSettle is how long a freshly opened serial port is left alone before the
+// first command.
+//
+// An Arduino-based controller — K3NG's firmware, the ERC family — RESETS when
+// the serial port is opened: the DTR line pulses its reset pin, and the
+// bootloader then holds the processor for a second or more. A command sent into
+// that window is simply lost, which is exactly how a controller that answers
+// PuTTY perfectly reports "no reply" here.
+const bootSettle = 2 * time.Second
+
+// heldPort is an open serial port, kept between calls.
+//
+// The package holds it rather than the Client because the callers build a FRESH
+// Client for every poll (one per heading request), and the port has to outlive
+// them. Reopening per command is what made an Arduino controller reboot several
+// times a second and never answer anything. A serial port is a single-owner
+// resource in any case: two clients for COM5 would be two handles on one cable.
+type heldPort struct {
+	p        serial.Port
+	openedAt time.Time
+}
+
+var (
+	portsMu   sync.Mutex
+	openPorts = map[string]*heldPort{}
+)
+
+// acquire returns the open port for com, opening it if needed.
+func acquire(com string, baud int) (*heldPort, error) {
+	portsMu.Lock()
+	defer portsMu.Unlock()
+	if h, ok := openPorts[com]; ok && h.p != nil {
+		return h, nil
+	}
 	if baud <= 0 {
 		baud = 9600
 	}
-		sp, err := serial.Open(c.ComPort, &serial.Mode{BaudRate: baud})
+	sp, err := serial.Open(com, &serial.Mode{BaudRate: baud})
 	if err != nil {
-			return "", fmt.Errorf("open rotator %s @ %d baud: %w", c.ComPort, baud, err)
+		return nil, fmt.Errorf("open rotator %s @ %d baud: %w", com, baud, err)
 	}
 	_ = sp.SetReadTimeout(200 * time.Millisecond)
-		conn = sp
+	h := &heldPort{p: sp, openedAt: time.Now()}
+	openPorts[com] = h
+	return h, nil
+}
+
+// drop closes and forgets a port, so the next call opens a fresh one. Called
+// when an exchange fails: a half-spoken conversation is worse than a new one.
+func drop(com string) {
+	portsMu.Lock()
+	defer portsMu.Unlock()
+	if h, ok := openPorts[com]; ok {
+		if h.p != nil {
+			_ = h.p.Close()
+		}
+		delete(openPorts, com)
+	}
+}
+
+// roundTrip sends one CR-terminated command and (when wantReply) reads one
+// CR/LF-terminated reply line. Serial keeps its port open between calls; TCP
+// dials per call, which is what the ARCO's LAN side expects.
+func (c *Client) roundTrip(cmd string, wantReply bool) (string, error) {
+	var conn io.ReadWriteCloser
+	if c.ComPort != "" {
+		h, err := acquire(c.ComPort, c.Baud)
+		if err != nil {
+			return "", err
+		}
+		// Let a just-reset controller finish booting before speaking to it.
+		if wait := bootSettle - time.Since(h.openedAt); wait > 0 {
+			time.Sleep(wait)
+		}
+		conn = h.p
+		// Whatever is already in the buffer belongs to the last exchange — the
+		// trailing LF of the previous reply, or a line the controller volunteered
+		// while nobody was reading. Read as the answer to THIS command it would
+		// be an answer to the wrong question.
+		drain(h.p)
 	} else {
 		nc, err := net.DialTimeout("tcp", net.JoinHostPort(c.Host, strconv.Itoa(c.Port)), dialTimeout)
 		if err != nil {
 			return "", fmt.Errorf("connect ARCO %s:%d: %w", c.Host, c.Port, err)
 		}
 		_ = nc.SetDeadline(time.Now().Add(ioTimeout))
+		defer nc.Close()
 		conn = nc
 	}
-	defer conn.Close()
 	if _, err := conn.Write([]byte(cmd + "\r")); err != nil {
+		if c.ComPort != "" {
+			drop(c.ComPort)
+		}
 		return "", fmt.Errorf("send %q: %w", cmd, err)
 	}
 	if !wantReply {
@@ -121,11 +189,29 @@ func (c *Client) roundTrip(cmd string, wantReply bool) (string, error) {
 	}
 	line := strings.TrimSpace(sb.String())
 	if line == "" {
+		// Silence may mean the port is fine and the controller is not, or that
+		// the handle is stale (a USB adapter unplugged and replugged). Let go of
+		// it so the next attempt starts from a clean open rather than repeating
+		// the same silence for ever.
+		if c.ComPort != "" {
+			drop(c.ComPort)
+		}
 		return "", fmt.Errorf("no reply to %q", cmd)
 	}
 	return line, nil
 }
 
+// drain empties whatever is waiting, without blocking for long.
+func drain(sp serial.Port) {
+	buf := make([]byte, 128)
+	for i := 0; i < 4; i++ {
+		n, err := sp.Read(buf)
+		if n == 0 || err != nil {
+			return
+		}
+	}
+}
+
 // GoTo points the antenna at the given azimuth (0-359). GS-232A takes M000-M450
 // (overlap rotators accept >360); we normalise to [0,360).
 func (c *Client) GoTo(az int) error {