chore: release v0.23.2

app.go

@@ -9121,6 +9121,49 @@ func (a *App) GetLogFilePath() string {
 	return applog.Path()
 }
 
+// TailLogFile returns the END of the diagnostic log — the last maxBytes, cut
+// back to a line boundary so the first line is never a fragment.
+//
+// The tail, not the file: it rotates at 10 MB, and the live viewer polls this
+// every second. Shipping megabytes across the Wails bridge on a timer would cost
+// more than the whole rest of the UI.
+func (a *App) TailLogFile(maxBytes int) (string, error) {
+	p := applog.Path()
+	if p == "" {
+		return "", fmt.Errorf("log file not initialised")
+	}
+	if maxBytes <= 0 || maxBytes > 4*1024*1024 {
+		maxBytes = 256 * 1024
+	}
+	f, err := os.Open(p)
+	if err != nil {
+		return "", err
+	}
+	defer f.Close()
+	fi, err := f.Stat()
+	if err != nil {
+		return "", err
+	}
+	start := int64(0)
+	if fi.Size() > int64(maxBytes) {
+		start = fi.Size() - int64(maxBytes)
+	}
+	if _, err := f.Seek(start, io.SeekStart); err != nil {
+		return "", err
+	}
+	buf, err := io.ReadAll(f)
+	if err != nil {
+		return "", err
+	}
+	s := string(buf)
+	if start > 0 {
+		if i := strings.IndexByte(s, '\n'); i >= 0 {
+			s = s[i+1:]
+		}
+	}
+	return s, nil
+}
+
 // UILog lets the frontend write to the same diagnostic log as the backend.
 //
 // Frontend-only logic (entry-strip auto-fill, debounce ordering, which field the
@@ -11377,13 +11420,18 @@ func (a *App) consumeUDPEvents() {
 			// after the configured duration. De-duped per call in the Flex backend.
 			if a.catFlexDecodeSpots && a.cat != nil {
 				now := time.Now()
-				if t, seen := lastDecodeSpot[ev.DecodeCall]; seen && now.Sub(t) < decodeSpotWindow {
+				// Key by call AND 100 kHz slot, not by call alone: with two
+				// receivers running (50.313 and 50.400, say) a station heard on
+				// both is two legitimate spots on two panadapters, and a
+				// call-only key threw the second away.
+				key := fmt.Sprintf("%s@%d", ev.DecodeCall, ev.DecodeFreqHz/100_000)
+				if t, seen := lastDecodeSpot[key]; seen && now.Sub(t) < decodeSpotWindow {
 					continue // spotted this call very recently — don't re-hammer the radio
 				}
 				if len(lastDecodeSpot) > 4000 {
 					lastDecodeSpot = map[string]time.Time{} // bound memory on long sessions
 				}
-				lastDecodeSpot[ev.DecodeCall] = now
+				lastDecodeSpot[key] = now
 				secs := a.catFlexDecodeSecs
 				if secs <= 0 {
 					secs = 120
@@ -13460,12 +13508,12 @@ func boolStr(b bool) string {
 // StationDevice is one configured relay board for the Station Control tab.
 type StationDevice struct {
 	ID       string   `json:"id"`
-	Type     string   `json:"type"` // "webswitch" | "kmtronic" | "denkovi" | "usbrelay"
+	Type     string   `json:"type"` // "webswitch" | "kmtronic" | "dingtian" | "denkovi" | "usbrelay"
 	Name     string   `json:"name"`
 	Host     string   `json:"host"`           // IP for network boards; FTDI serial for denkovi; COM port for usbrelay
-	User     string   `json:"user,omitempty"` // KMTronic HTTP auth (blank = none)
-	Pass     string   `json:"pass,omitempty"`
-	Channels int      `json:"channels,omitempty"` // usbrelay only: number of relays (1/2/4/8/16)
+	User     string   `json:"user,omitempty"` // KMTronic HTTP auth; Dingtian HTTP session ID (blank = none)
+	Pass     string   `json:"pass,omitempty"` // KMTronic HTTP auth; Dingtian relay password (0–9999)
+	Channels int      `json:"channels,omitempty"` // usbrelay/denkovi/dingtian: number of relays
 	Labels   []string `json:"labels"`             // per-relay label (index 0 = relay 1)
 }
 
@@ -13473,10 +13521,13 @@ type StationDevice struct {
 // except the Denkovi (4 or 8) and the generic USB-serial board, whose channel
 // count the user picks.
 func deviceRelayCount(d StationDevice) int {
-	if d.Type == "usbrelay" || d.Type == "denkovi" {
+	if d.Type == "usbrelay" || d.Type == "denkovi" || d.Type == "dingtian" {
 		if d.Channels >= 1 {
 			return d.Channels
 		}
+		if d.Type == "dingtian" {
+			return 2 // the smallest board; the real count comes from its status reply
+		}
 		return 8
 	}
 	return relayCountFor(d.Type)
@@ -13504,6 +13555,9 @@ func buildDeviceDriver(d StationDevice) relaydev.Device {
 	switch d.Type {
 	case "kmtronic":
 		return relaydev.NewKMTronic(d.Host, d.User, d.Pass)
+	case "dingtian":
+		// User carries the optional HTTP session ID, Pass the relay password.
+		return relaydev.NewDingtian(d.Host, d.User, d.Pass, deviceRelayCount(d))
 	case "denkovi":
 		// Host carries the FTDI serial number (e.g. "DAE0006K"), not a hostname.
 		return relaydev.NewDenkovi(d.Host, deviceRelayCount(d))
@@ -13607,7 +13661,7 @@ func (a *App) SaveStationDevices(devs []StationDevice) error {
 	}
 	for i := range devs {
 		switch devs[i].Type {
-		case "kmtronic", "denkovi", "usbrelay", "webswitch":
+		case "kmtronic", "dingtian", "denkovi", "usbrelay", "webswitch":
 			// known type — keep
 		default:
 			devs[i].Type = "webswitch"
@@ -15470,6 +15524,12 @@ type SpotStatus struct {
 	// when that database has been downloaded); POTA from the spot's tagged park.
 	NewCounty bool `json:"new_county"`
 	NewPOTA   bool `json:"new_pota"`
+	// NewPfx flags a CQ WPX prefix never worked before, and Pfx is that prefix.
+	// Also orthogonal: a common entity on a worked band can still carry a prefix
+	// that has never been in the log, which is exactly what a WPX chaser is
+	// scanning the cluster for.
+	NewPfx bool   `json:"new_pfx"`
+	Pfx    string `json:"pfx,omitempty"`
 }
 
 // ClusterSpotStatuses takes a batch of spots and returns slot status for
@@ -15525,6 +15585,16 @@ func (a *App) ClusterSpotStatuses(spots []SpotQuery) []SpotStatus {
 	// lookup) and worked POTA parks. Both built once per batch.
 	workedCounties, _ := a.qso.WorkedCountyKeys(a.ctx, award.USCountyKey)
 	workedPOTA, _ := a.qso.WorkedPOTARefs(a.ctx)
+	// Worked WPX prefixes, derived from the callsigns we already loaded — no
+	// extra query. Derived rather than read from the stored PFX column: that
+	// column is only filled when an import supplied it, and deriving keeps this
+	// in step with the WPX award, which does the same thing.
+	workedPfx := make(map[string]struct{}, len(workedCalls))
+	for c := range workedCalls {
+		if p := award.WPXPrefix(c); p != "" {
+			workedPfx[p] = struct{}{}
+		}
+	}
 	for i, q := range spots {
 		out[i] = SpotStatus{
 			Call: q.Call,
@@ -15534,6 +15604,13 @@ func (a *App) ClusterSpotStatuses(spots []SpotQuery) []SpotStatus {
 		if _, ok := workedCalls[strings.ToUpper(q.Call)]; ok {
 			out[i].WorkedCall = true
 		}
+		// NEW PFX: the spot's CQ WPX prefix, never worked before.
+		if p := award.WPXPrefix(q.Call); p != "" {
+			out[i].Pfx = p
+			if _, done := workedPfx[p]; !done {
+				out[i].NewPfx = true
+			}
+		}
 		// NEW POTA: the spot's tagged park, never worked before.
 		if ref := strings.ToUpper(strings.TrimSpace(q.POTARef)); ref != "" {
 			if _, done := workedPOTA[ref]; !done {

changelog.json

@@ -1,4 +1,54 @@
 [
+  {
+    "version": "0.23.2",
+    "date": "",
+    "en": [
+      "Lookup: the locator now keeps whichever is more precise. A 4-character square from QRZ or HamQTH no longer overwrites the full 6-character locator confirmed on a previous contact.",
+      "LoTW badge: when ARRL's own user list has not been rebuilt for a while, the tooltip says so with its date — a station shown as \"uploaded 7 days ago\" may simply be sitting in a frozen list.",
+      "FlexRadio decode spots: with two WSJT-X instances on two slices, decodes are no longer placed on the wrong panadapter, and a station heard on both is now spotted on both.",
+      "DX cluster: a spot glued to the login prompt is no longer dropped. Clusters that print the prompt without a newline cost you the first spot after connecting.",
+      "Help → Diagnostic log: read the log live, without leaving OpsLog. Filter the lines, and follow the end or scroll back freely.",
+      "Entity stats: the DX station's sunrise and sunset (UTC) now show on the right, next to Most Wanted. Midnight sun and polar night are named as such."
+    ],
+    "fr": [
+      "Recherche : le locator garde désormais le plus précis des deux. Un carré en 4 caractères venant de QRZ ou HamQTH n'écrase plus le locator complet en 6 caractères confirmé lors d'un contact précédent.",
+      "Badge LoTW : quand la liste ARRL elle-même n'a pas été régénérée depuis un moment, l'infobulle le dit avec sa date — une station annoncée « dernier envoi il y a 7 jours » peut simplement figurer dans une liste figée.",
+      "Spots de décodes FlexRadio : avec deux instances WSJT-X sur deux slices, les décodes ne s'affichent plus sur le mauvais panadapter, et une station entendue sur les deux est désormais spottée sur les deux.",
+      "Cluster DX : un spot collé à l'invite de connexion n'est plus perdu. Les clusters qui affichent leur invite sans retour à la ligne coûtaient le premier spot après la connexion.",
+      "Aide → Journal de diagnostic : lire le journal en direct sans quitter OpsLog. Filtrage des lignes, et suivi de la fin qu'on peut relâcher pour remonter.",
+      "Statistiques d'entité : le lever et le coucher du soleil de la station DX (UTC) s'affichent à droite, à côté du Most Wanted. Soleil de minuit et nuit polaire sont nommés."
+    ]
+  },
+  {
+    "version": "0.23.1",
+    "date": "",
+    "en": [
+      "DX cluster: NEW COUNTY is green, like NEW POTA.",
+      "CW: pressing ESC during a macro no longer turns the report from 599 into 59 when \"ESC clears the callsign too\" is on."
+    ],
+    "fr": [
+      "Cluster DX : NOUVEAU COMTÉ passe en vert, comme NOUVEAU POTA.",
+      "CW : appuyer sur Échap pendant une macro ne fait plus passer le report de 599 à 59 quand l'option « Échap efface aussi l'indicatif » est cochée."
+    ]
+  },
+  {
+    "version": "0.23.0",
+    "date": "",
+    "en": [
+      "Station Control: Dingtian IOT relay boards (2 to 32 relays, LAN or WiFi) can now be added.",
+      "ACOM amplifiers: the card now shows TUNE while the tuner is running, instead of an unknown state.",
+      "DX cluster: the status pills are gone. The call, band and mode turn yellow when that one is new, and a callsign already in the log turns blue.",
+      "Reports: starting OpsLog with the rig already in CW no longer leaves the RST fields on 59 — they now follow the mode you are actually on. (Thanks HB9HBY)",
+      "DX cluster: NEW PFX marks a spot whose CQ WPX prefix has never been worked, in the status column and as a filter."
+    ],
+    "fr": [
+      "Contrôle station : les cartes relais Dingtian IOT (2 à 32 relais, LAN ou WiFi) peuvent désormais être ajoutées.",
+      "Amplificateurs ACOM : la carte affiche TUNE pendant l'accord, au lieu d'un état inconnu.",
+      "Cluster DX : les pastilles de statut disparaissent. L'indicatif, la bande et le mode passent en jaune quand celui-ci est nouveau, et un indicatif déjà dans le log passe en bleu.",
+      "Reports : lancer OpsLog avec le poste déjà en CW ne laisse plus les RST à 59 — ils suivent maintenant le mode réellement en cours. (Merci HB9HBY)",
+      "Cluster DX : NOUVEAU PFX signale un spot dont le préfixe CQ WPX n'a jamais été contacté, dans la colonne de statut et en filtre."
+    ]
+  },
   {
     "version": "0.22.9",
     "date": "",

frontend/src/App.tsx

@@ -120,6 +120,7 @@ import {
 import { cn } from '@/lib/utils';
 import { pathBetween, pathBetweenLatLon, gridToLatLon, latLonToGrid } from '@/lib/maidenhead';
 import { flagURL } from '@/lib/flags';
+import { LogViewer } from '@/components/LogViewer';
 
 type QSO = QSOForm;
 type ImportResult = adifModels.ImportResult;
@@ -492,6 +493,14 @@ export default function App() {
   const [bandRx, setBandRx] = useState('20m');
   const [countries, setCountries] = useState<string[]>([]);
   const [rstLists, setRstLists] = useState<RSTLists>({ phone: [], cw: [], digital: [] });
+  // Refs for the report defaults. applyModePreset is called from long-lived
+  // closures — the global key handler is the one that bit us — whose dependency
+  // lists deliberately exclude the mode, so reading the state variables there
+  // gives whatever they were when that closure was built.
+  const modePresetsRef = useRef(modePresets);
+  useEffect(() => { modePresetsRef.current = modePresets; }, [modePresets]);
+  const rstListsRef = useRef(rstLists);
+  useEffect(() => { rstListsRef.current = rstLists; }, [rstLists]);
   const [rstSent, setRstSent] = useState('59');
   const [rstRcvd, setRstRcvd] = useState('59');
   const [grid, setGrid] = useState('');
@@ -539,7 +548,7 @@ export default function App() {
   }, []);
   // LoTW-user lookup for the entered callsign (from the cached ARRL activity list),
   // debounced. Drives a colour-coded LoTW badge by last-upload recency.
-  const [lotwInfo, setLotwInfo] = useState<{ is_user: boolean; last_upload?: string; days_ago: number } | null>(null);
+  const [lotwInfo, setLotwInfo] = useState<{ is_user: boolean; last_upload?: string; days_ago: number; feed_date?: string; feed_stale?: boolean } | null>(null);
   useEffect(() => {
     const c = callsign.trim();
     if (!c) { setLotwInfo(null); return; }
@@ -1382,7 +1391,7 @@ export default function App() {
   // county or a new park is not a DXCC state, it is another dimension of the
   // same spot — which is why the grid shows them as separate badges. Filtering
   // is an OR across all of them, as it already was for a worked callsign.
-  type SpotFilterKey = SpotStatusKey | 'new-pota' | 'new-county';
+  type SpotFilterKey = SpotStatusKey | 'new-pota' | 'new-county' | 'new-pfx';
   const [clusterStatusFilter, setClusterStatusFilter] = useState<Set<SpotFilterKey>>(() => lsSet<SpotFilterKey>('opslog.clusterStatusFilter'));
   // Mode filter chips. Empty set = show every mode. Categories map the
   // inferred per-spot mode onto SSB (phone) / CW / DATA (digital).
@@ -1478,7 +1487,7 @@ export default function App() {
   // Cached per-call slot status: "new" | "new-band" | "new-slot" | "worked".
   // Keyed by `${call}|${band}|${mode}` so two spots of the same call on
   // different slots don't share the same colour.
-  const [spotStatus, setSpotStatus] = useState<Record<string, { status: string; country?: string; continent?: string; worked_call?: boolean; new_county?: boolean; new_pota?: boolean }>>({});
+  const [spotStatus, setSpotStatus] = useState<Record<string, { status: string; country?: string; continent?: string; worked_call?: boolean; new_county?: boolean; new_pota?: boolean; new_pfx?: boolean; pfx?: string }>>({});
   // Live mirror of spotStatus so the incoming-spot buffer can tell which slots
   // still need resolving without re-subscribing the cluster:spot listener.
   const spotStatusRef = useRef(spotStatus);
@@ -1539,6 +1548,7 @@ export default function App() {
   const [showAbout, setShowAbout] = useState(false);
   // "What's new": the changelog for the version(s) since the operator last ran,
   // shown once on the first launch after an update (EN/FR per the UI language).
+  const [showLogViewer, setShowLogViewer] = useState(false);
   const [whatsNew, setWhatsNew] = useState<Array<{ version: string; date: string; en: string[]; fr: string[] }> | null>(null);
   // Which language the What's-new modal shows — defaults to the UI language but
   // toggleable, so a French operator running the English UI can still read it.
@@ -2112,11 +2122,22 @@ export default function App() {
         setModePresets(l.modes);
         const names = l.modes.map((m) => m.name);
         setModes(names);
-        setMode((cur) => names.includes(cur) ? cur : names[0]);
-        const preset = l.modes.find((m) => m.name === mode) ?? l.modes[0];
-        if (preset && !rstUserEditedRef.current) {
-          if (preset.default_rst_sent) setRstSent(preset.default_rst_sent);
-          if (preset.default_rst_rcvd) setRstRcvd(preset.default_rst_rcvd);
+        // Resolve the mode we are ACTUALLY on, then take that mode's report.
+        //
+        // This used to read the `mode` state variable, which this callback
+        // captures once (its dep list is empty) — so it was still the initial
+        // 'SSB' — and fell back to l.modes[0], SSB again, when the lookup
+        // missed. An operator who launched OpsLog with the rig already in CW
+        // and did not touch the VFO got 59/59 and kept it: nothing else runs
+        // until the CAT state actually changes.
+        const cur = names.includes(modeRef.current) ? modeRef.current : names[0];
+        setMode(cur);
+        if (!rstUserEditedRef.current) {
+          const lists: RSTLists = { phone: (l as any).rst_phone ?? [], cw: (l as any).rst_cw ?? [], digital: (l as any).rst_digital ?? [] };
+          const p = l.modes.find((m) => m.name === cur);
+          const fallback = rstOptions(cur, lists)[0] || '';
+          setRstSent(p?.default_rst_sent || fallback);
+          setRstRcvd(p?.default_rst_rcvd || fallback);
         }
       }
     } catch {}
@@ -2176,8 +2197,9 @@ export default function App() {
     // Prefer the user's configured preset RST; otherwise fall back to the mode
     // category default (CW/RTTY/PSK → 599, phone → 59, digital → first option)
     // so switching SSB→CW flips 59→599 even without a configured preset.
-    const p = modePresets.find((x) => x.name === m);
-    const fallback = rstOptions(m, rstLists)[0] || '';
+    // Read through the refs, never the state: see their declaration.
+    const p = modePresetsRef.current.find((x) => x.name === m);
+    const fallback = rstOptions(m, rstListsRef.current)[0] || '';
     setRstSent(p?.default_rst_sent || fallback);
     setRstRcvd(p?.default_rst_rcvd || fallback);
   }
@@ -2450,6 +2472,8 @@ export default function App() {
                 worked_call: !!(r as any).worked_call,
                 new_county: !!(r as any).new_county,
                 new_pota: !!(r as any).new_pota,
+                new_pfx: !!(r as any).new_pfx,
+                pfx: (r as any).pfx,
               };
             }
             return next;
@@ -2905,6 +2929,8 @@ export default function App() {
               worked_call: !!(r as any).worked_call,
               new_county: !!(r as any).new_county,
               new_pota: !!(r as any).new_pota,
+              new_pfx: !!(r as any).new_pfx,
+              pfx: (r as any).pfx,
             };
           }
           return next;
@@ -3013,7 +3039,11 @@ export default function App() {
     setWb(null); // clear the Worked-before grid for the just-cleared callsign
     setLookupError('');
     rstUserEditedRef.current = false;
-    applyModePreset(mode);
+    // modeRef, not `mode`: resetEntry is reached from the global key handler,
+    // whose effect does not re-run on a mode change. Pressing ESC during a CW
+    // macro therefore reset the report using the mode as it was when that
+    // handler was built — 'SSB' — and turned 599 into 59.
+    applyModePreset(modeRef.current);
     setDetails((d) => ({
       ...d,
       state: '', cnty: '', address: '', lat: undefined, lon: undefined,
@@ -3265,10 +3295,16 @@ export default function App() {
     if (!ue.has('name') && empty(r?.name) && last.name) setName(last.name);
     if (!ue.has('qth') && empty(r?.qth) && last.qth) setQth(last.qth);
     if (!ue.has('country') && empty(r?.country) && last.country) setCountry(last.country);
-    // Grid: a REAL provider grid always wins. Otherwise the last QSO's precise
-    // locator beats the coarse cty.dat entity centroid the provider block set — so
-    // a French call resolves to its real JNxx, not the country's JN16 centroid.
-    const adoptLastGrid = !ue.has('grid') && empty(r?.grid) && !!last.grid;
+    // Grid: the provider (QRZ / HamQTH) leads, but only while it is at least as
+    // PRECISE as what we already worked. It used to lead whenever it answered at
+    // all, so a 4-character square — which is what a provider returns when the
+    // station only published a rough locator, and what the cty.dat entity
+    // centroid gives — overwrote the full 6-character locator confirmed on a
+    // previous contact. Comparing lengths keeps the finer of the two, whichever
+    // side it came from.
+    const provGrid = String(r?.grid ?? '').trim();
+    const lastGrid = String(last.grid ?? '').trim();
+    const adoptLastGrid = !ue.has('grid') && !!lastGrid && lastGrid.length > provGrid.length;
     if (adoptLastGrid) setGrid(last.grid);
     setDetails((d) => {
       // When we adopt the last QSO's locator, take its coordinates too (derive them
@@ -3590,6 +3626,8 @@ export default function App() {
         { type: 'item' as const, label: sendingLog ? t('help.sendLogBusy') : t('help.sendLog'), action: 'help.sendlog', disabled: sendingLog },
       ] : []),
       { type: 'separator' },
+      { type: 'item', label: t('logview.title'), action: 'help.log' },
+      { type: 'separator' },
       { type: 'item', label: t('help.donate'), action: 'help.donate', accent: true },
       { type: 'separator' },
       { type: 'item', label: t('help.about'), action: 'help.about' },
@@ -3623,6 +3661,7 @@ export default function App() {
       case 'tools.refreshCty':  refreshCtyDat(); break;
       case 'tools.downloadRefs': downloadRefs(); break;
       case 'help.about':        setShowAbout(true); checkUpdateNow(); break;
+      case 'help.log':          setShowLogViewer(true); break;
       case 'help.whatsnew':     GetChangelog().then((e: any) => { if (Array.isArray(e) && e.length) setWhatsNew(e); else showToast(t('whatsnew.none')); }).catch(() => {}); break;
       case 'help.sendlog':      sendLogToDeveloper(); break;
       // Opens in the system browser, NOT the app WebView: a payment page must show
@@ -4031,8 +4070,14 @@ export default function App() {
     const cls = d >= 0 && d < 7 ? 'border-success text-success bg-success/15'
       : d < 30 ? 'border-warning text-warning bg-warning/15'
       : 'border-danger text-danger bg-danger/15';
+    // ARRL regenerates lotw-user-activity.csv on its own schedule and has been
+    // seen frozen for a week (2026-08-02: newest line 2026-07-27). "Uploaded 7
+    // days ago" then says nothing about the station, so the tooltip names the
+    // day the feed itself was built whenever that day is not recent.
+    const tip = t('lotw.userTip', { date: lotwInfo.last_upload || '?', days: d })
+      + (lotwInfo.feed_stale && lotwInfo.feed_date ? ' — ' + t('lotw.feedStale', { date: lotwInfo.feed_date }) : '');
     return (
-      <div className="shrink-0" title={t('lotw.userTip', { date: lotwInfo.last_upload || '?', days: d })}>
+      <div className="shrink-0" title={tip}>
         <span className={cn('inline-flex items-center rounded-md border px-1.5 py-1 text-[9px] font-extrabold tracking-wide leading-none', cls)}>
           LoTW
         </span>
@@ -4340,7 +4385,8 @@ export default function App() {
         const matches = clusterStatusFilter.has(st)
           || (!!e?.worked_call && clusterStatusFilter.has('worked'))
           || (!!e?.new_pota && clusterStatusFilter.has('new-pota'))
-          || (!!e?.new_county && clusterStatusFilter.has('new-county'));
+          || (!!e?.new_county && clusterStatusFilter.has('new-county'))
+          || (!!e?.new_pfx && clusterStatusFilter.has('new-pfx'));
         if (!matches) return false;
       }
       if (clusterHideWorked) {
@@ -4459,7 +4505,8 @@ export default function App() {
               // Same colours as the badges in the grid — a filter that does not
               // look like what it selects has to be learned twice.
               { k: 'new-pota'   as SpotFilterKey, label: 'NEW POTA',   cls: 'bg-success-muted text-success-muted-foreground border-success-border' },
-              { k: 'new-county' as SpotFilterKey, label: 'NEW COUNTY', cls: 'bg-info-muted text-info-muted-foreground border-info-border' },
+              { k: 'new-county' as SpotFilterKey, label: 'NEW COUNTY', cls: 'bg-success-muted text-success-muted-foreground border-success-border' },
+              { k: 'new-pfx'    as SpotFilterKey, label: 'NEW PFX',    cls: 'bg-caution-muted text-caution-muted-foreground border-caution-border' },
               // (no WORKED chip — use the "Hide worked" checkbox to drop dupes.)
             ]).map((s) => {
               const on = clusterStatusFilter.has(s.k);
@@ -5218,6 +5265,9 @@ export default function App() {
         </div>
       )}
 
+      {/* Live diagnostic log (Help → …). Polls only while open. */}
+      <LogViewer open={showLogViewer} onOpenChange={setShowLogViewer} />
+
       {/* What's new — shown once on the first launch after an update. */}
       {whatsNew && (
         <div className="fixed inset-0 z-[200] flex items-center justify-center bg-black/40 backdrop-blur-sm p-4" onClick={() => setWhatsNew(null)}>

frontend/src/components/BandSlotGrid.tsx

@@ -1,7 +1,8 @@
 import { useMemo } from 'react';
-import { Star, Radio } from 'lucide-react';
+import { Star, Radio, Sunrise, Sunset } from 'lucide-react';
 import { Badge } from '@/components/ui/badge';
 import { cn } from '@/lib/utils';
+import { sunTimes } from '@/lib/sun';
 import type { WorkedBeforeView } from '@/types';
 
 type WorkedBefore = WorkedBeforeView;
@@ -13,6 +14,10 @@ interface Props {
   currentMode: string;
   bands?: string[]; // operator's configured bands; falls back to DEFAULT_BANDS
   hasCall?: boolean; // a callsign is being entered — only then highlight the "current entry" cell
+  // DX station coordinates, for its sunrise/sunset. Optional: many spots resolve
+  // to an entity with no position at all, and the block simply does not appear.
+  lat?: number;
+  lon?: number;
 }
 
 // Compact column label for a band tag: keep the classic V/U for 2m/70cm,
@@ -84,7 +89,7 @@ function cellTitle(band: string, cls: string, status: string, current: boolean):
   return `${band} ${cls}: ${desc}${current ? ' — current entry' : ''}`;
 }
 
-export function BandSlotGrid({ wb, busy, currentBand, currentMode, bands, hasCall = true }: Props) {
+export function BandSlotGrid({ wb, busy, currentBand, currentMode, bands, hasCall = true, lat, lon }: Props) {
   // Columns from the operator's configured bands (so the matrix shows only the
   // bands they actually use), falling back to the built-in default set.
   const cols = useMemo(
@@ -151,6 +156,36 @@ export function BandSlotGrid({ wb, busy, currentBand, currentMode, bands, hasCal
     </Badge>
   ) : null;
 
+  // Sunrise / sunset AT THE DX, in UTC. A glance tells you whether the path is
+  // about to open or close on their side, which is the reason to look at a DX
+  // station's grey line at all. Recomputed only when the position changes.
+  const sun = useMemo(
+    () => (lat == null || lon == null ? null : sunTimes(new Date(), lat, lon)),
+    [lat, lon],
+  );
+  const sunBlock = sun ? (
+    <div className="ml-auto flex items-center gap-3 text-xs shrink-0"
+      title="Sunrise / sunset at the DX station (UTC)">
+      {sun.polarDay ? (
+        <span className="font-semibold text-warning">midnight sun</span>
+      ) : sun.polarNight ? (
+        <span className="font-semibold text-info">polar night</span>
+      ) : (
+        <>
+          <span className="flex items-center gap-1">
+            <Sunrise className="size-3.5 text-warning" />
+            <span className="font-mono tabular-nums">{sun.rise || '—'}</span>
+          </span>
+          <span className="flex items-center gap-1">
+            <Sunset className="size-3.5 text-info" />
+            <span className="font-mono tabular-nums">{sun.set || '—'}</span>
+          </span>
+          <span className="text-muted-foreground">UTC</span>
+        </>
+      )}
+    </div>
+  ) : null;
+
   return (
     <section
       className={cn(
@@ -158,7 +193,7 @@ export function BandSlotGrid({ wb, busy, currentBand, currentMode, bands, hasCal
         newOne && 'bg-gradient-to-br from-warning-muted to-warning-muted rounded-lg',
       )}
     >
-      <div className="flex items-center gap-2 min-w-[220px]">
+      <div className="flex items-center gap-2 min-w-[220px] flex-1">
         {newOne ? (
           <>
             <Badge className="bg-warning text-warning-foreground gap-1 px-3 py-1 text-[11px]">
@@ -207,6 +242,7 @@ export function BandSlotGrid({ wb, busy, currentBand, currentMode, bands, hasCal
             Type a callsign to see entity stats
           </span>
         )}
+        {sunBlock}
       </div>
 
       <div className="flex flex-col gap-2">

frontend/src/components/ClusterGrid.tsx

@@ -53,6 +53,8 @@ export type SpotStatusEntry = {
   worked_call?: boolean;
   new_county?: boolean;
   new_pota?: boolean;
+  new_pfx?: boolean;
+  pfx?: string;
 };
 
 type Props = {
@@ -99,47 +101,42 @@ function statusFor(p: any): SpotStatusEntry | undefined {
   ];
 }
 
-// statusBadge maps a resolved spot status to a short labelled badge for the
-// Status column, using the same colours as the per-cell fills (NEW DXCC =
-// call cell, NEW BAND = band cell, NEW SLOT = mode cell). Returns null when
-// there's nothing notable to show.
-type Badge = { text: string; fg: string; bg: string; bd: string };
+// Spot status is shown by COLOURING THE TEXT, never by a pill or a badge.
+//
+// The pills were dropped: a rounded box has its own height and padding, so it
+// sat off the row's baseline and the callsign inside it no longer lined up with
+// the plain callsigns above and below. A whole column of them read as chrome
+// rather than as data. Same reasoning — and the same semantic tokens — as the
+// Y/N/R QSL columns in lib/qslStatus.ts.
+//
+// Which cell is coloured IS the message, so one colour is enough for all three:
+//
+//   yellow call → new DXCC     yellow band → new band     yellow mode → new mode
+//   blue call   → already worked
+const NEW = 'var(--warning)'; // yellow: something here is new
+const WKD = 'var(--info)';    // blue: this callsign is already in the log
 
-// tok builds a badge from a semantic status token (success/warning/caution/
-// danger/info/neutral) so the colours adapt to every theme via CSS variables,
-// instead of the hard-coded light-theme pastels that looked wrong in dark mode.
-function tok(name: string, text: string): Badge {
-  if (name === 'neutral') return { text, fg: 'var(--muted-foreground)', bg: 'var(--muted)', bd: 'var(--border)' };
-  return { text, fg: `var(--${name}-muted-foreground)`, bg: `var(--${name}-muted)`, bd: `var(--${name}-border)` };
-}
-
-// cellChip wraps a Band/Mode cell value in a small rounded pill (same look as the
-// Status badges) when the slot is notable, instead of flooding the whole cell with
-// a heavy muted fill that turned into an ugly olive block on dark themes. `name` is
-// null → plain text, no pill.
-function cellChip(value: any, name: string | null): any {
+// cellText renders a cell value in an optional colour. An empty value keeps the
+// muted dash the grid used before, so blank cells still read as "nothing here"
+// rather than as a gap.
+function cellText(value: any, color: string | null): any {
   const txt = value === undefined || value === null || value === '' ? '' : String(value);
-  if (!name) return txt || <span style={{ color: 'var(--muted-foreground)', fontSize: 10 }}>—</span>;
-  // Inherit the column's font size (no fixed 9px / height) so a pill around a
-  // callsign stays the same size as the plain callsigns next to it — just tinted
-  // and rounded, not shrunk.
-  return (
-    <span style={{
-      display: 'inline-flex', alignItems: 'center', lineHeight: 1.1,
-      backgroundColor: `var(--${name}-muted)`, color: `var(--${name}-muted-foreground)`,
-      border: `1px solid var(--${name}-border)`, fontWeight: 700,
-      padding: '1px 6px', borderRadius: 999, whiteSpace: 'nowrap',
-    }}>{txt}</span>
-  );
+  if (!txt) return <span style={{ color: 'var(--muted-foreground)', fontSize: 10 }}>—</span>;
+  return <span style={color ? { color, fontWeight: 700 } : undefined}>{txt}</span>;
 }
 
-function statusBadge(t: TFn, s: SpotStatusEntry | undefined): Badge | null {
+// statusColor is the colour for a resolved status in the Status column. County,
+// POTA and prefix keep their own tokens: they are orthogonal to the band/mode/
+// DXCC story and an operator filters on them separately.
+function statusColor(s: SpotStatusEntry | undefined): string | null {
   switch (s?.status) {
-    case 'new':      return tok('danger',  t('clg2.newDxcc'));
-    case 'new-band': return tok('warning', t('clg2.newBand'));
-    case 'new-mode': return tok('caution', t('clg2.newMode'));
-    case 'new-slot': return tok('caution', t('clg2.newSlot'));
-    default:         return s?.worked_call ? tok('neutral', t('clg2.wkdCall')) : null;
+    case 'new':
+    case 'new-band':
+    case 'new-mode':
+    case 'new-slot':
+      return NEW;
+    default:
+      return s?.worked_call ? WKD : null;
   }
 }
 
@@ -166,15 +163,12 @@ const makeColCatalog = (t: TFn): ColEntry[] => [
     headerName: t('clg2.c.call'), field: 'dx_call' as any, width: 120,
     defaultVisible: true,
     cellClass: 'font-mono',
-    // NEW DXCC → a danger pill around the call, consistent with the NEW BAND /
-    // NEW MODE pills (same look, same tokens). Worked-call stays blue bold text;
-    // a plain spot inherits the theme's normal text colour so callsigns blend in
-    // with the rest of the row instead of always shouting a colour.
+    // NEW DXCC → yellow call. Already worked → blue call. Anything else keeps
+    // the theme's normal ink so ordinary callsigns don't shout.
     cellRenderer: (p: any) => {
       const s = statusFor(p);
-      if (s?.status === 'new') return cellChip(p.value, 'danger');
-      const color = s?.worked_call ? 'var(--info)' : undefined;
-      return <span style={{ color, fontWeight: 700 }}>{p.value ?? ''}</span>;
+      const color = s?.status === 'new' ? NEW : s?.worked_call ? WKD : null;
+      return <span style={{ color: color ?? undefined, fontWeight: 700 }}>{p.value ?? ''}</span>;
     },
     tooltipValueGetter: (p: any) => {
       const s = statusFor(p);
@@ -185,9 +179,10 @@ const makeColCatalog = (t: TFn): ColEntry[] => [
     group: 'Spot', label: t('clg2.c.status'), colId: 'status',
     headerName: t('clg2.c.status'), width: 120, sortable: true,
     defaultVisible: true,
-    // Spells out the slot status as a text badge so NEW SLOT (and the others)
-    // is obvious at the row level, not just a single coloured cell. NEW COUNTY
-    // and NEW POTA are orthogonal, so they stack as extra badges.
+    // Spells the status out in words so NEW SLOT (and the others) is obvious at
+    // the row level, not just a single coloured cell — NEW SLOT in particular
+    // colours no cell at all, since neither the band nor the mode is new on its
+    // own. NEW COUNTY and NEW POTA are orthogonal, so they stack after it.
     valueGetter: (p: any) => {
       const s = statusFor(p);
       const parts: string[] = [];
@@ -198,25 +193,31 @@ const makeColCatalog = (t: TFn): ColEntry[] => [
       else if (s?.worked_call) parts.push(t('clg2.wkdCall'));
       if (s?.new_county) parts.push(t('clg2.newCounty'));
       if (s?.new_pota) parts.push(t('clg2.newPota'));
+      if (s?.new_pfx) parts.push(t('clg2.newPfx'));
       return parts.join(' ');
     },
     cellRenderer: (p: any) => {
       const s = statusFor(p);
-      const badges: Badge[] = [];
-      const b = statusBadge(t, s);
-      if (b) badges.push(b);
-      if (s?.new_county) badges.push(tok('info', t('clg2.newCounty')));
-      if (s?.new_pota) badges.push(tok('success', t('clg2.newPota')));
-      if (badges.length === 0) return <span style={{ color: 'var(--muted-foreground)', fontSize: 10 }}>—</span>;
+      const parts: { text: string; color: string }[] = [];
+      const main = statusColor(s);
+      if (main) {
+        const label = s?.status === 'new' ? t('clg2.newDxcc')
+          : s?.status === 'new-band' ? t('clg2.newBand')
+            : s?.status === 'new-mode' ? t('clg2.newMode')
+              : s?.status === 'new-slot' ? t('clg2.newSlot')
+                : t('clg2.wkdCall');
+        parts.push({ text: label, color: main });
+      }
+      if (s?.new_county) parts.push({ text: t('clg2.newCounty'), color: 'var(--success)' });
+      if (s?.new_pota) parts.push({ text: t('clg2.newPota'), color: 'var(--success)' });
+      if (s?.new_pfx) parts.push({ text: t('clg2.newPfx'), color: 'var(--caution)' });
+      if (parts.length === 0) return <span style={{ color: 'var(--muted-foreground)', fontSize: 10 }}>—</span>;
       return (
-        <span style={{ display: 'flex', height: '100%', flexWrap: 'wrap', gap: 2, alignItems: 'center' }}>
-          {badges.map((bd, i) => (
-            <span key={i} style={{
-              display: 'inline-flex', alignItems: 'center', height: 15, lineHeight: 1,
-              backgroundColor: bd.bg, color: bd.fg, border: `1px solid ${bd.bd}`,
-              fontWeight: 700, fontSize: 9,
-              padding: '0 5px', borderRadius: 999, letterSpacing: 0.3, whiteSpace: 'nowrap',
-            }}>{bd.text}</span>
+        <span style={{ whiteSpace: 'nowrap' }}>
+          {parts.map((pt, i) => (
+            <span key={i} style={{ color: pt.color, fontWeight: 700 }}>
+              {i > 0 ? ' · ' : ''}{pt.text}
+            </span>
           ))}
         </span>
       );
@@ -249,8 +250,8 @@ const makeColCatalog = (t: TFn): ColEntry[] => [
     headerName: t('clg2.c.band'), field: 'band' as any, width: 75,
     defaultVisible: true,
     cellClass: 'font-mono',
-    // NEW BAND for this entity → small warning pill around the band text.
-    cellRenderer: (p: any) => cellChip(p.value, statusFor(p)?.status === 'new-band' ? 'warning' : null),
+    // NEW BAND for this entity → the band text turns yellow.
+    cellRenderer: (p: any) => cellText(p.value, statusFor(p)?.status === 'new-band' ? NEW : null),
     tooltipValueGetter: (p: any) => (statusFor(p)?.status === 'new-band' ? t('clg2.tipNewBand') : undefined),
   },
   {
@@ -263,7 +264,7 @@ const makeColCatalog = (t: TFn): ColEntry[] => [
     // for the entity. NEW SLOT means band AND mode were each worked before (just
     // not together), so highlighting the mode cell would wrongly imply "CW is new";
     // that case is signalled by the Status badge alone.
-    cellRenderer: (p: any) => cellChip(p.value, statusFor(p)?.status === 'new-mode' ? 'caution' : null),
+    cellRenderer: (p: any) => cellText(p.value, statusFor(p)?.status === 'new-mode' ? NEW : null),
     tooltipValueGetter: (p: any) => {
       const st = statusFor(p)?.status;
       if (st === 'new-mode') return t('clg2.tipNewMode');

frontend/src/components/DetailsPanel.tsx

@@ -215,6 +215,15 @@ export function DetailsPanel({ callsign, prefix, operatorGrid, remoteGrid, qth,
     }
     return null;
   }, [operatorGrid, remoteGrid, details.lat, details.lon]);
+  // Where the DX actually is, for its sunrise/sunset. The locator wins when we
+  // have one — it is what the operator can see and check — and the provider's
+  // raw coordinates cover entities that resolve through cty.dat with no grid.
+  const dxLL = useMemo(() => {
+    const byGrid = gridToLatLon(remoteGrid);
+    if (byGrid) return byGrid;
+    if (details.lat != null && details.lon != null) return { lat: details.lat, lon: details.lon };
+    return null;
+  }, [remoteGrid, details.lat, details.lon]);
   const fmtDeg = (n: number) => `${Math.round(n)}°`;
   const fmtKm = (n: number) => `${Math.round(n).toLocaleString()} km`;
 
@@ -263,7 +272,8 @@ export function DetailsPanel({ callsign, prefix, operatorGrid, remoteGrid, qth,
       <div className={cn('flex-1 min-h-0', open === 'stats' ? 'overflow-hidden' : 'overflow-y-auto')}>
       {open === 'stats' && (
         <div className="px-3 py-2.5">
-          <BandSlotGrid wb={wb} busy={!!wbBusy} currentBand={band} currentMode={mode} bands={bands} hasCall={callsign.trim() !== ''} />
+          <BandSlotGrid wb={wb} busy={!!wbBusy} currentBand={band} currentMode={mode} bands={bands} hasCall={callsign.trim() !== ''}
+            lat={dxLL?.lat} lon={dxLL?.lon} />
         </div>
       )}
 

frontend/src/components/LogViewer.tsx

@@ -0,0 +1,137 @@
+import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
+import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogDescription } from '@/components/ui/dialog';
+import { Button } from '@/components/ui/button';
+import { Input } from '@/components/ui/input';
+import { Checkbox } from '@/components/ui/checkbox';
+import { useI18n } from '@/lib/i18n';
+import { TailLogFile, GetLogFilePath } from '../../wailsjs/go/main/App';
+
+// LogViewer shows the tail of opslog.log and keeps it current while open.
+//
+// This exists because diagnosing a problem used to mean asking the operator to
+// find a file in their data directory, open it in a text editor, and re-open it
+// after every attempt. Half the round-trips in a bug report were spent on that.
+//
+// Three behaviours matter more than they look:
+//   • Auto-scroll is a checkbox the operator owns, AND it releases itself the
+//     moment they scroll up — otherwise the line they are reading is yanked away
+//     a second later, which defeats the one thing this window is for. Scrolling
+//     back to the bottom re-arms it, so following is never a dead end.
+//   • The filter keeps only matching LINES rather than highlighting inside a
+//     256 KB blob: with "cluster" or "acom" typed in, the window becomes exactly
+//     the subsystem trace you would have grepped for.
+//   • It polls only while open. A closed dialog costs nothing.
+const TAIL_BYTES = 256 * 1024;
+const POLL_MS = 1000;
+
+export function LogViewer({ open, onOpenChange }: { open: boolean; onOpenChange: (v: boolean) => void }) {
+  const { t } = useI18n();
+  const [text, setText] = useState('');
+  const [path, setPath] = useState('');
+  const [query, setQuery] = useState('');
+  const [autoScroll, setAutoScroll] = useState(true);
+  // Shown next to the checkbox so a QUIET log still proves it is being polled —
+  // without it there is no way to tell 'nothing new' from 'window is dead'.
+  const [lastPull, setLastPull] = useState('');
+  const boxRef = useRef<HTMLPreElement>(null);
+  const autoRef = useRef(true);
+  useEffect(() => { autoRef.current = autoScroll; }, [autoScroll]);
+
+  // stick pins the view to the bottom on the NEXT frame. Setting scrollTop
+  // straight away is not enough while the dialog is still animating in: the box
+  // has no height yet, scrollHeight is wrong, and the scroll silently does
+  // nothing — leaving the operator staring at the top of a 256 KB buffer, i.e.
+  // at lines from hours ago, which looks exactly like a frozen window.
+  const stick = useCallback(() => {
+    if (!autoRef.current) return;
+    requestAnimationFrame(() => {
+      const el = boxRef.current;
+      if (el) el.scrollTop = el.scrollHeight;
+    });
+  }, []);
+
+  const pull = useCallback(() => {
+    TailLogFile(TAIL_BYTES).then((s: any) => {
+      setText(String(s ?? ''));
+      setLastPull(new Date().toLocaleTimeString());
+    }).catch(() => {});
+  }, []);
+
+  useEffect(() => {
+    if (!open) return;
+    setAutoScroll(true);
+    autoRef.current = true;
+    GetLogFilePath().then((p: any) => setPath(String(p ?? ''))).catch(() => {});
+    pull();
+    // Re-assert the bottom after the open animation has settled. A quiet log
+    // never changes, so the content-driven scroll below would never fire again
+    // and the first attempt would be the only one.
+    const t1 = window.setTimeout(stick, 120);
+    const t2 = window.setTimeout(stick, 450);
+    const id = window.setInterval(pull, POLL_MS);
+    return () => { window.clearInterval(id); window.clearTimeout(t1); window.clearTimeout(t2); };
+  }, [open, pull, stick]);
+
+  const all = useMemo(() => text.split('\n'), [text]);
+  const shown = useMemo(() => {
+    const q = query.trim().toLowerCase();
+    if (!q) return all;
+    return all.filter((l) => l.toLowerCase().includes(q));
+  }, [all, query]);
+
+  // Stick to the bottom after each refresh, but only while auto-scroll is on.
+  useEffect(() => { if (open) stick(); }, [shown, open, stick]);
+
+  // Scrolling away from the bottom releases auto-scroll; coming back re-arms it.
+  function onScroll() {
+    const el = boxRef.current;
+    if (!el) return;
+    setAutoScroll(el.scrollHeight - el.scrollTop - el.clientHeight < 24);
+  }
+
+  const body = shown.join('\n');
+  return (
+    <Dialog open={open} onOpenChange={onOpenChange}>
+      <DialogContent className="max-w-5xl">
+        <DialogHeader>
+          <DialogTitle>{t('logview.title')}</DialogTitle>
+          <DialogDescription className="font-mono text-[11px] break-all">{path}</DialogDescription>
+        </DialogHeader>
+
+        <div className="flex items-center gap-2">
+          <Input className="h-8 flex-1 font-mono text-xs" value={query} placeholder={t('logview.searchPh')}
+            onChange={(e) => setQuery(e.target.value)} />
+          {query.trim() !== '' && (
+            <span className="text-xs text-muted-foreground tabular-nums whitespace-nowrap">
+              {t('logview.matches', { n: shown.length, total: all.length })}
+            </span>
+          )}
+        </div>
+
+        <pre ref={boxRef} onScroll={onScroll}
+          className="h-[60vh] overflow-auto rounded-md border border-border bg-muted/30 p-2 text-[11px] leading-snug font-mono whitespace-pre-wrap break-all">
+          {body.trim() === '' ? t('logview.empty') : body}
+        </pre>
+
+        <div className="flex items-center gap-2">
+          <label className="flex items-center gap-2 text-xs cursor-pointer">
+            <Checkbox checked={autoScroll} onCheckedChange={(c) => {
+              const on = !!c;
+              setAutoScroll(on);
+              if (on) { const el = boxRef.current; if (el) el.scrollTop = el.scrollHeight; }
+            }} />
+            {t('logview.autoScroll')}
+          </label>
+          {lastPull && <span className="text-xs text-muted-foreground tabular-nums">{t('logview.updated', { time: lastPull })}</span>}
+          <div className="flex-1" />
+          <Button variant="outline" size="sm" onClick={() => navigator.clipboard?.writeText(body)}>
+            {t('logview.copy')}
+          </Button>
+          <Button variant="outline" size="sm" onClick={() => { setQuery(''); setAutoScroll(true); pull(); }}>
+            {t('logview.toEnd')}
+          </Button>
+        </div>
+      </DialogContent>
+    </Dialog>
+  );
+}

frontend/src/components/SettingsModal.tsx

@@ -3298,6 +3298,7 @@ export function SettingsModal({ onClose, onSaved, initialSection, onMainPaneChan
           <Button variant="outline" size="sm" onClick={addAmp}>
             <Plus className="size-3.5 mr-1" /> {t('amp.add')}
           </Button>
+
         </div>
       </>
     );

frontend/src/components/StationControlPanel.tsx

@@ -33,13 +33,15 @@ type DevStatus = { id: string; name: string; type: string; connected: boolean; e
 const CARD_MIN = 430; // narrowest a card may get before "Auto" drops a column
 const GRID_GAP = 16; // px between cards, both axes
 
-const RELAY_COUNT: Record<string, number> = { webswitch: 5, kmtronic: 8, denkovi: 8, usbrelay: 8 };
-const TYPE_LABEL: Record<string, string> = { webswitch: 'WebSwitch 1216H', kmtronic: 'KMTronic 8-relay', denkovi: 'Denkovi USB (FT245)', usbrelay: 'Denkovi USB (serial)' };
+const RELAY_COUNT: Record<string, number> = { webswitch: 5, kmtronic: 8, denkovi: 8, usbrelay: 8, dingtian: 2 };
+const TYPE_LABEL: Record<string, string> = { webswitch: 'WebSwitch 1216H', kmtronic: 'KMTronic 8-relay', denkovi: 'Denkovi USB (FT245)', usbrelay: 'Denkovi USB (serial)', dingtian: 'Dingtian IOT relay' };
 
 // Relay count for a configured device: fixed by type, except Denkovi (4/8) and
 // the generic USB-serial board, whose channel count the user picks.
 const chanCount = (d: Device): number =>
-  (d.type === 'denkovi' || d.type === 'usbrelay') ? (d.channels && d.channels >= 1 ? d.channels : 8) : (RELAY_COUNT[d.type] ?? 5);
+  (d.type === 'denkovi' || d.type === 'usbrelay') ? (d.channels && d.channels >= 1 ? d.channels : 8)
+    : d.type === 'dingtian' ? (d.channels && d.channels >= 1 ? d.channels : 2)
+      : (RELAY_COUNT[d.type] ?? 5);
 
 function blankDevice(): Device {
   return { id: '', type: 'webswitch', name: '', host: '', user: '', pass: '', labels: Array(5).fill('') };
@@ -552,6 +554,7 @@ function DeviceEditor({ device, onChange, onSave, onCancel, t }: {
     onChange({ ...device, channels, labels });
   };
   const isKM = device.type === 'kmtronic';
+  const isDingtian = device.type === 'dingtian';
   const isDenkovi = device.type === 'denkovi';
   const isUsbRelay = device.type === 'usbrelay';
   // COM ports for the generic USB-serial relay picker.
@@ -602,6 +605,7 @@ function DeviceEditor({ device, onChange, onSave, onCancel, t }: {
             <SelectContent>
               <SelectItem value="webswitch">WebSwitch 1216H (5 relays)</SelectItem>
               <SelectItem value="kmtronic">KMTronic 8-relay (LAN)</SelectItem>
+              <SelectItem value="dingtian">Dingtian IOT relay (LAN / WiFi)</SelectItem>
               <SelectItem value="denkovi">Denkovi USB (FT245 / D2XX)</SelectItem>
               <SelectItem value="usbrelay">Denkovi USB (serial / COM)</SelectItem>
             </SelectContent>
@@ -612,13 +616,13 @@ function DeviceEditor({ device, onChange, onSave, onCancel, t }: {
           <Input value={device.name} placeholder={TYPE_LABEL[device.type]} onChange={(e) => onChange({ ...device, name: e.target.value })} />
         </div>
       </div>
-      {(isDenkovi || isUsbRelay) && (
+      {(isDenkovi || isUsbRelay || isDingtian) && (
         <div className="space-y-1 max-w-[10rem]">
           <Label>{t('station.channels')}</Label>
           <Select value={String(chanCount(device))} onValueChange={(v) => setChannels(parseInt(v, 10))}>
             <SelectTrigger className="h-9"><SelectValue /></SelectTrigger>
             <SelectContent>
-              {(isDenkovi ? [4, 8] : [1, 2, 4, 8, 16]).map((n) => (
+              {(isDenkovi ? [4, 8] : isDingtian ? [2, 4, 8, 16, 24, 32] : [1, 2, 4, 8, 16]).map((n) => (
                 <SelectItem key={n} value={String(n)}>{n}</SelectItem>
               ))}
             </SelectContent>
@@ -661,11 +665,28 @@ function DeviceEditor({ device, onChange, onSave, onCancel, t }: {
           <p className="text-[10px] text-muted-foreground">{t('station.usbRelayHint')}</p>
         </div>
       ) : (
-      <div className={cn('grid gap-3', isKM ? 'grid-cols-3' : 'grid-cols-1')}>
-        <div className={cn('space-y-1', isKM ? '' : 'max-w-xs')}>
+      <div className={cn('grid gap-3', (isKM || isDingtian) ? 'grid-cols-3' : 'grid-cols-1')}>
+        <div className={cn('space-y-1', (isKM || isDingtian) ? '' : 'max-w-xs')}>
           <Label>{t('station.host')}</Label>
           <Input className="font-mono" value={device.host} placeholder="192.168.1.100" onChange={(e) => onChange({ ...device, host: e.target.value })} />
         </div>
+        {/* Dingtian: both are OFF on a factory board — the session ID only when
+            "HTTP Session" is enabled in its web page, the password only when a
+            relay password is set. */}
+        {isDingtian && (
+          <>
+            <div className="space-y-1">
+              <Label>{t('station.dtSession')}</Label>
+              <Input className="font-mono" value={device.user ?? ''} placeholder={t('station.optional')}
+                onChange={(e) => onChange({ ...device, user: e.target.value })} />
+            </div>
+            <div className="space-y-1">
+              <Label>{t('station.dtPwd')}</Label>
+              <Input className="font-mono" value={device.pass ?? ''} placeholder="0"
+                onChange={(e) => onChange({ ...device, pass: e.target.value.replace(/[^0-9]/g, '') })} />
+            </div>
+          </>
+        )}
         {isKM && (
           <>
             <div className="space-y-1">

frontend/src/lib/sun.ts

@@ -0,0 +1,83 @@
+// Sunrise / sunset for a station, in UTC.
+//
+// Built on greyline.ts's sunPosition() rather than on a second implementation of
+// the solar equations: the map's terminator and the entry strip's sunrise must
+// never disagree, and there is a whole comment block over there about a sign
+// error that produced six months of plausible-looking wrong answers. One source
+// of astronomy, one place to be wrong.
+//
+// Everything is UTC. Amateur radio runs on UTC, the log is in UTC, and a local
+// time would raise the question "local to whom — me or the DX?".
+import { sunPosition } from './greyline';
+
+const DEG = Math.PI / 180;
+
+// Standard altitude of the Sun's centre at rise/set: half a solar diameter below
+// the horizon plus atmospheric refraction.
+const H0 = -0.833;
+
+// solarAltitude returns the Sun's elevation in degrees at a place and instant.
+function solarAltitude(date: Date, latDeg: number, lonDeg: number): number {
+	const { dec, gha } = sunPosition(date);
+	const ha = (gha + lonDeg) * DEG; // local hour angle
+	const d = dec * DEG;
+	const lat = latDeg * DEG;
+	return Math.asin(Math.sin(lat) * Math.sin(d) + Math.cos(lat) * Math.cos(d) * Math.cos(ha)) / DEG;
+}
+
+export type SunTimes = {
+	rise: string; // "HH:MM" UTC, "" when the Sun does not rise that day
+	set: string;
+	polarDay: boolean;   // Sun stays up all day
+	polarNight: boolean; // Sun never comes up
+};
+
+// sunTimes scans the UTC day a minute at a time and reports where the Sun
+// crosses the rise/set altitude.
+//
+// A scan, not the closed-form hour-angle formula, because the closed form needs
+// special-casing for the polar cases and for days where the declination shifts
+// enough to matter, and it silently returns NaN rather than saying "no sunrise
+// here today". 1440 evaluations is nothing, and the failure mode is honest: no
+// crossing found means no sunrise, which is a real answer above the Arctic
+// circle. The crossing minute is then refined by linear interpolation, so the
+// result is accurate to well under a minute despite the coarse scan.
+export function sunTimes(date: Date, latDeg: number, lonDeg: number): SunTimes {
+	const out: SunTimes = { rise: '', set: '', polarDay: false, polarNight: false };
+	if (!isFinite(latDeg) || !isFinite(lonDeg)) return out;
+
+	const start = Date.UTC(date.getUTCFullYear(), date.getUTCMonth(), date.getUTCDate());
+	const minute = 60000;
+	let prev = solarAltitude(new Date(start), latDeg, lonDeg);
+	const anyUp = prev > H0;
+	let anyDown = prev <= H0;
+	let sawUp = anyUp;
+
+	for (let i = 1; i <= 1440; i++) {
+		const alt = solarAltitude(new Date(start + i * minute), latDeg, lonDeg);
+		if (alt > H0) sawUp = true; else anyDown = true;
+		if (prev <= H0 && alt > H0 && !out.rise) {
+			out.rise = fmt(start + (i - 1 + frac(prev, alt)) * minute);
+		} else if (prev > H0 && alt <= H0 && !out.set) {
+			out.set = fmt(start + (i - 1 + frac(prev, alt)) * minute);
+		}
+		prev = alt;
+	}
+	if (!out.rise && !out.set) {
+		out.polarDay = sawUp && !anyDown;
+		out.polarNight = !sawUp;
+	}
+	return out;
+}
+
+// frac is where between two samples the altitude crosses H0.
+function frac(a: number, b: number): number {
+	const d = b - a;
+	return d === 0 ? 0 : (H0 - a) / d;
+}
+
+function fmt(ms: number): string {
+	const d = new Date(ms);
+	const p = (n: number) => String(n).padStart(2, '0');
+	return `${p(d.getUTCHours())}:${p(d.getUTCMinutes())}`;
+}

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 = '0.22.9';
+export const APP_VERSION = '0.23.2';
 
 // Author / credits, shown in Help -> About.
 export const APP_AUTHOR = 'F4BPO';

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

@@ -989,6 +989,8 @@ export function SwitchCATRig(arg1:number):Promise<void>;
 
 export function SyncPOTAHunterLog(arg1:boolean,arg2:boolean):Promise<main.POTASyncResult>;
 
+export function TailLogFile(arg1:number):Promise<string>;
+
 export function TestCloudlogUpload():Promise<string>;
 
 export function TestClublogUpload():Promise<string>;

frontend/wailsjs/go/main/App.js

@@ -1926,6 +1926,10 @@ export function SyncPOTAHunterLog(arg1, arg2) {
   return window['go']['main']['App']['SyncPOTAHunterLog'](arg1, arg2);
 }
 
+export function TailLogFile(arg1) {
+  return window['go']['main']['App']['TailLogFile'](arg1);
+}
+
 export function TestCloudlogUpload() {
   return window['go']['main']['App']['TestCloudlogUpload']();
 }

frontend/wailsjs/go/models.ts

@@ -1442,6 +1442,8 @@ export namespace lotwusers {
 	    is_user: boolean;
 	    last_upload?: string;
 	    days_ago: number;
+	    feed_date?: string;
+	    feed_stale: boolean;
 	
 	    static createFrom(source: any = {}) {
 	        return new Info(source);
@@ -1452,6 +1454,8 @@ export namespace lotwusers {
 	        this.is_user = source["is_user"];
 	        this.last_upload = source["last_upload"];
 	        this.days_ago = source["days_ago"];
+	        this.feed_date = source["feed_date"];
+	        this.feed_stale = source["feed_stale"];
 	    }
 	}
 
@@ -2904,6 +2908,8 @@ export namespace main {
 	    worked_call: boolean;
 	    new_county: boolean;
 	    new_pota: boolean;
+	    new_pfx: boolean;
+	    pfx?: string;
 	
 	    static createFrom(source: any = {}) {
 	        return new SpotStatus(source);
@@ -2920,6 +2926,8 @@ export namespace main {
 	        this.worked_call = source["worked_call"];
 	        this.new_county = source["new_county"];
 	        this.new_pota = source["new_pota"];
+	        this.new_pfx = source["new_pfx"];
+	        this.pfx = source["pfx"];
 	    }
 	}
 	export class StartupStatus {

internal/acom/ATU-FINDINGS.md

@@ -0,0 +1,86 @@
+# ACOM built-in ATU — what we know, and why OpsLog does not drive it
+
+Session of 2026-08-02 on F4BPO's friend's **ACOM 500S**, serial link, telemetry
+trace. Written down so nobody repeats the work. **Conclusion first: the tuner
+cannot be started over the serial link, and the attempt to work around that was
+abandoned.**
+
+## The tuner is PA state 8
+
+Frame byte 3's high nibble is the PA status. ACOM's own list (recovered by the
+ACOM-Controller project) has no entry for 8; it is the antenna tuner. Confirmed
+twice, front-panel TUNE, with the byte-level trace running:
+
+```
+14:47:20.745  state 8 step 0   ← TUNE pressed. err=FF
+14:47:22.588  operator keys a carrier (FT-891, FM, 31 W, 3.6358 MHz)
+14:47:24.006  state 8 step 2
+14:47:25.201  state 8 step 4
+14:47:27.457  state 8 step 5
+14:47:30.092  state 5 STANDBY  ← accord finished
+```
+
+Byte 3's **low** nibble is a step counter through the accord: `0 → 2 → 4 → 5`.
+Step 0 means *armed, waiting for RF* — in the first of the two runs the
+amplifier sat there **30 seconds** untouched before the operator transmitted.
+
+`paStatusNames[8] = "TUNE"` in acom.go is the only thing kept from all of this.
+
+## The command does not exist in the state-command family
+
+Every action byte of `55 81 08 02 00 XX 00 CHK` was tried, each one from a
+**verified** STANDBY (an earlier sweep was worthless because its second code
+parked the amp in SERVICE, where it silently refuses everything — 17 false
+negatives). Result:
+
+| byte | effect |
+|------|--------|
+| 0x01, 0x02 | **reboot the amplifier** — it prints `AMPLIFIER: ACOM 500S / HELLO ME…` |
+| 0x04 | → SERVICE (state 4) |
+| 0x05 | → STANDBY (state 5) |
+| 0x06 | → OPERATE (state 6) |
+| 0x0A | → OFF (state 10) |
+| 0x03, 0x07..0x09, 0x0B..0x18 | nothing, state unchanged |
+
+The action byte **is** the target PA state — four independent confirmations.
+Which makes 0x08 the obvious candidate for TUNE. **It was tried, from a verified
+STANDBY, and does nothing.** State 8 is reachable from the front panel only.
+
+Going further would mean varying the other bytes of the frame. That is a large
+space, and 0x01/0x02 prove that bad values reboot a 500 W amplifier. Not worth
+it.
+
+## The workaround that was built and removed
+
+Since the amp waits, armed, for a carrier, OpsLog could watch for state 8 and
+supply one: memorise the mode, drop the power, switch to FM, key the PTT, wait
+for state 8 to clear, unkey, restore. It was implemented (`acomtune.go`, opt-in,
+Settings → Amplifier) and **removed** after the first hardware test:
+
+- the power change did not take effect, and
+- **the PTT was not released when the tune finished.**
+
+A logger that can leave a transceiver keyed is not acceptable, and the whole
+thing was scaffolding around a protocol we do not actually control. Removed at
+the operator's request: *"je veux qu'OpsLog soit solide et ça c'est de la
+bidouille."*
+
+If it is ever revisited, the unexplained part is why the tune-finished detection
+did not fire — `anyAcomTuning()` polled `StateRaw == 8` every 200 ms and should
+have seen the drop to STANDBY. Suspect the status snapshot, not the amplifier.
+
+## Loose ends worth knowing
+
+- **Frame byte 6 is a multiplexer.** The tail of the frame changes meaning with
+  it: `0x93` = bytes 48/49 carry the TX frequency in kHz (`62 1B` = 7010 while
+  the rig was on 7.010 MHz), `0x9D` = something else. Byte 70 looked like a
+  tuner flag for a while purely because of this — it toggles on its own several
+  times a minute. Do not read tail bytes without checking byte 6.
+- **Byte 5 bit 0x80 alternates frame to frame.** It is a sequence/parity bit,
+  not a command acknowledgement.
+- **Byte 66 (the error code) shows 0x14 / 0x8E / 0x69 / 0x0F during a normal
+  tune and during transmission.** `errText` renders those as "ERROR — see
+  display" and "Remove drive power", so an ACOM operator probably sees a false
+  alarm. This was never confirmed with the amplifier in OPERATE (it was in
+  STANDBY throughout, where drive genuinely is an error) — worth a look with a
+  clean log before touching the table.

internal/acom/acom.go

@@ -77,9 +77,14 @@ var models = map[string]model{
 }
 
 // paStatusNames maps the PAstatus nibble to a display string.
+// 8 is absent from the state list the ACOM-Controller project recovered; it is
+// the antenna tuner, read off F4BPO's 500S on 2026-08-02. Pressing TUNE on the
+// front panel took byte 3 from 0x51 to 0x80, the amp then WAITED 19 s doing
+// nothing until the operator keyed a carrier, ran the tune over ~8 s while the
+// low nibble stepped 0→2→4→5, and dropped back to 0x51 (STANDBY).
 var paStatusNames = map[int]string{
 	1: "RESET", 2: "INIT", 3: "DEBUG", 4: "SERVICE",
-	5: "STANDBY", 6: "RECEIVE", 7: "TRANSMIT", 9: "SYSTEM", 10: "OFF",
+	5: "STANDBY", 6: "RECEIVE", 7: "TRANSMIT", 8: "TUNE", 9: "SYSTEM", 10: "OFF",
 }
 
 // acomBands maps the band nibble to a band label.

internal/cluster/cluster.go

@@ -648,6 +648,18 @@ func parseShowDX(line string) (Spot, bool) {
 }
 
 func parseSpot(line string) (Spot, bool) {
+	// A cluster prints its prompt WITHOUT a trailing newline, so the first spot
+	// to arrive gets glued onto it and the line reads
+	// "login: DX de YO2CK-#:   21074.0  PY4PTO  FT8 …". The anchor then fails
+	// and the spot is dropped — silently, apart from an UNPARSED log line.
+	//
+	// Cutting everything ahead of "DX de" rather than un-anchoring the pattern:
+	// an un-anchored match would also accept a talk/announce line that merely
+	// QUOTES a spot, and start injecting other people's conversations as real
+	// spots.
+	if i := strings.Index(line, "DX de"); i > 0 {
+		line = line[i:]
+	}
 	m := spotRE.FindStringSubmatch(line)
 	if m == nil {
 		return Spot{}, false

internal/cluster/cluster_test.go

@@ -14,6 +14,12 @@ func TestParseSpot(t *testing.T) {
 			`DX de DK0SWL:    14195.5  W1AW         CQ Field Day                 1745Z`,
 			"W1AW", 14195.5, "20m", "",
 		},
+		{
+			// The cluster prints its prompt with no trailing newline, so the
+			// first spot arrives glued to it. Seen live on 2026-08-02.
+			`login: DX de YO2CK-#:   21074.0  PY4PTO       FT8  -16 dB                    1733Z`,
+			"PY4PTO", 21074.0, "15m", "",
+		},
 		{
 			`DX de F4XYZ-#:    7074.0  3DA0RU       FT8 -10                       0823Z JN18`,
 			"3DA0RU", 7074.0, "40m", "JN18",

internal/integrations/udp/server.go

@@ -86,7 +86,13 @@ type Server struct {
 	stopped bool
 	mu      sync.Mutex
 
-	lastDialHz int64  // WSJT: dial freq from the last Status, added to Decode offsets
+	// WSJT: dial frequency from the last Status, added to Decode audio offsets —
+	// keyed by the WSJT-X instance id, NOT one value per listener. Two instances
+	// share one multicast group, so a single value was overwritten by whichever
+	// sent Status last: decodes from the 50.313 receiver were placed on the
+	// 50.400 panadapter. WSJT-X requires --rig-name for a second instance, so the
+	// id is distinct whenever there is more than one.
+	dialHz map[string]int64
 	lastDX     string // WSJT: last non-empty DX Call seen, to detect a clear
 }
 
@@ -211,15 +217,21 @@ func (s *Server) handle(pkt []byte, remote *net.UDPAddr) {
 		// offsets can be turned into RF frequencies for the panadapter.
 		if w.FreqHz > 0 && !w.IsDecode {
 			s.mu.Lock()
-			s.lastDialHz = w.FreqHz
+			if s.dialHz == nil {
+				s.dialHz = map[string]int64{}
+			}
+			s.dialHz[w.ProgramID] = w.FreqHz
 			s.mu.Unlock()
 		}
 		if w.IsDecode {
 			s.mu.Lock()
-			dial := s.lastDialHz
+			dial := s.dialHz[w.ProgramID]
 			s.mu.Unlock()
 			if dial <= 0 {
-				return // no dial freq yet (Status not seen) → can't place the spot
+				// No Status from THIS instance yet. Guessing with another
+				// instance's dial is what produced the wrong-panadapter spots,
+				// so drop the decode and wait — Status arrives every second.
+				return
 			}
 			ev.DecodeCall = w.DecodeCall
 			ev.DecodeFreqHz = dial + w.DeltaFreqHz

internal/lookup/QRZ-XML-FIELDS.md

@@ -0,0 +1,74 @@
+# QRZ.com XML API — what a free account returns, and what a subscription adds
+
+Captured 2026-08-02 on F4BPO's two accounts, same callsign looked up twice
+within a minute. Kept because the difference is the answer to a question that
+comes back regularly: *"someone told me their logger gets the 6-character
+locator from QRZ without paying"*. It does not.
+
+## Free account — `SubExp: non-subscriber`
+
+```xml
+<Callsign>
+  <call>F4BPO</call>
+  <fname>Gregory</fname>
+  <name>Salaun</name>
+  <addr2>Veigy-Foncenex</addr2>
+  <country>France</country>
+</Callsign>
+<Session>
+  <SubExp>non-subscriber</SubExp>
+  <Message>A subscription is required to access the complete record.</Message>
+</Session>
+```
+
+**Five fields.** No `grid`, no `lat`/`lon`, no `dxcc`, no zones, no email, no
+street, no image.
+
+## Subscriber — `SubExp: Sat Jul 3 21:45:38 2027`
+
+```xml
+<Callsign>
+  <call>F4BPO</call>          <dxcc>227</dxcc>        <nickname>Greg</nickname>
+  <fname>Gregory</fname>      <name>Salaun</name>
+  <addr2>Veigy-Foncenex</addr2><zip>74140</zip>       <country>France</country>
+  <lat>46.103333</lat>        <lon>6.290000</lon>     <grid>JN36dc</grid>
+  <ccode>97</ccode>           <land>France</land>     <class>2</class>
+  <codes>E</codes>            <qslmgr>Lotw, Buro, Direct</qslmgr>
+  <email>…</email>            <u_views>56966</u_views>
+  <bio>4414</bio>             <biodate>2026-07-08 15:30:58</biodate>
+  <image>https://cdn-xml.qrz.com/o/f4bpo/F4BPO_Greg_png.jpg</image>
+  <imageinfo>800:1200:221041</imageinfo>
+  <moddate>2025-08-24 19:55:31</moddate>
+  <eqsl>0</eqsl>              <mqsl>1</mqsl>          <lotw>1</lotw>
+  <cqzone>14</cqzone>         <ituzone>27</ituzone>
+  <geoloc>user</geoloc>       <name_fmt>Gregory "Greg" Salaun</name_fmt>
+  <serial>1000134</serial>
+</Callsign>
+```
+
+## Consequences
+
+- **A free QRZ account can never fill the locator, the coordinates, the zones
+  or the e-mail.** If someone reports a logger doing it on a free account, they
+  are either using HamQTH (free, returns a 6-character `grid`) or they hold an
+  XML subscription without realising it — the QRZ.com account and the "XML
+  Logbook Data" subscription are sold separately. `SubExp` in the session block
+  settles it in one request.
+- **Profile edits take a few minutes to reach the XML feed.** Changing the grid
+  on the website and looking the callsign up immediately returns the OLD value,
+  which looks exactly like a stale cache. Re-test after a few minutes before
+  suspecting the logger. (This cost an hour on 2026-08-02.)
+
+## Fields OpsLog does not use yet
+
+`qrz.go` maps call, name, addr1/2, zip, state, county, country, grid, lat, lon,
+dxcc, cqzone, ituzone, cont, email, qslmgr and image. Left on the table:
+
+- **`geoloc`** — `user` when the operator entered the position by hand, versus a
+  geocoded value derived from the postal address. This is a direct statement of
+  how much the coordinates and the locator can be trusted, and it is exactly
+  the question the grid-precision rule in App.tsx tries to answer by comparing
+  string lengths. Worth wiring if the locator ever misbehaves again.
+- **`eqsl` / `mqsl` / `lotw`** — the station's QSL preferences as flags, more
+  reliable than parsing the free-text `qslmgr`.
+- `nickname` / `name_fmt`, `class`, `moddate`, `bio`.

internal/lotwusers/lotwusers.go

@@ -29,6 +29,13 @@ type Info struct {
 	IsUser     bool   `json:"is_user"`
 	LastUpload string `json:"last_upload,omitempty"` // YYYY-MM-DD
 	DaysAgo    int    `json:"days_ago"`              // days since last upload (-1 if unknown)
+	// FeedDate is the newest upload date anywhere in ARRL's file, i.e. when ARRL
+	// last regenerated it, and FeedStale says that date is more than two days old.
+	// Without them "last uploaded 7 days ago" is unreadable: it may mean the
+	// station went quiet, or that the FEED has been frozen for a week — which is
+	// exactly what ARRL served on 2026-08-02, its newest line dated 2026-07-27.
+	FeedDate  string `json:"feed_date,omitempty"`
+	FeedStale bool   `json:"feed_stale"`
 }
 
 // Manager holds the parsed list + cache location.
@@ -36,6 +43,7 @@ type Manager struct {
 	mu      sync.RWMutex
 	users   map[string]time.Time // UPPER(callsign) → last-upload date (UTC)
 	updated time.Time            // when the cache was last refreshed
+	newest  time.Time            // newest upload date in the file = when ARRL built it
 	dir     string
 	client  *http.Client
 }
@@ -100,6 +108,7 @@ func (m *Manager) Download(ctx context.Context) (int, error) {
 // parse loads the CSV bytes into the map and returns the count.
 func (m *Manager) parse(data []byte) int {
 	users := make(map[string]time.Time, 1<<20)
+	var newest time.Time
 	sc := bufio.NewScanner(bytes.NewReader(data))
 	sc.Buffer(make([]byte, 1024*1024), 1024*1024)
 	for sc.Scan() {
@@ -120,16 +129,29 @@ func (m *Manager) parse(data []byte) int {
 			continue
 		}
 		users[call] = t
+		if t.After(newest) {
+			newest = t
+		}
 	}
 	if len(users) == 0 {
 		return 0
 	}
 	m.mu.Lock()
 	m.users = users
+	m.newest = newest
 	m.mu.Unlock()
 	return len(users)
 }
 
+// feedInfo fills the feed-age fields shared by every Lookup result.
+func (m *Manager) feedInfo(i Info) Info {
+	if !m.newest.IsZero() {
+		i.FeedDate = m.newest.Format("2006-01-02")
+		i.FeedStale = time.Since(m.newest) > 48*time.Hour
+	}
+	return i
+}
+
 // Lookup reports whether callsign is a LoTW user and how long ago it uploaded.
 // Tries the exact call, then (for portable calls like "EA8/DL1ABC" or "F5ABC/P")
 // the longest slash-separated segment — the base call LoTW is keyed on.
@@ -154,13 +176,13 @@ func (m *Manager) Lookup(callsign string) Info {
 		t, ok = m.users[base]
 	}
 	if !ok {
-		return Info{DaysAgo: -1}
+		return m.feedInfo(Info{DaysAgo: -1})
 	}
 	days := int(time.Since(t).Hours() / 24)
 	if days < 0 {
 		days = 0
 	}
-	return Info{IsUser: true, LastUpload: t.Format("2006-01-02"), DaysAgo: days}
+	return m.feedInfo(Info{IsUser: true, LastUpload: t.Format("2006-01-02"), DaysAgo: days})
 }
 
 // Count returns how many callsigns are loaded.

internal/relaydev/relaydev.go

@@ -7,6 +7,10 @@
 //   - KMTronic LAN 8-relay WEB board — 8 relays. Control: GET /FF{rr}{ss}
 //     (rr = 01..08, ss = 01 on / 00 off); status: GET /status.xml with
 //     <relay1>..<relay8> (relay0 is reserved). Optional HTTP basic auth.
+//   - Dingtian IOT relay (DTWONDER) — 2/4/8/16/24/32 relays over its HTTP GET
+//     CGI. Control: GET /relay_cgi.cgi?type=0&relay=N&on=1&time=0&pwd=P&;
+//     status: GET /relay_cgi_load.cgi. Both answer &-separated fields.
+//     (IOT Relay Programming Manual V1.9.8.1, §3.)
 //
 // A Device presents the same surface to the app regardless of wire protocol.
 package relaydev
@@ -173,3 +177,119 @@ func (k *kmtronic) Status(ctx context.Context) ([]bool, error) {
 	}
 	return out, nil
 }
+
+// ── Dingtian IOT relay (DTWONDER) ──────────────────────────────────────
+//
+// The board speaks several protocols (Modbus, MQTT, CoAP, its own binary); we
+// use the HTTP GET CGI, which needs no connection state and matches how the
+// other network boards here are driven.
+//
+// Both endpoints answer &-separated fields, first one 0 on success:
+//
+//	/relay_cgi_load.cgi                                  → &0&4&1&0&1&0&
+//	                                                       result, count, r1…rN
+//	/relay_cgi.cgi?type=0&relay=0&on=1&time=0&pwd=0&     → &0&0&0&1&0&
+//	                                                       result, type, relay, on, time
+//
+// NOTE the relay index in the URL is ZERO-based (relay=0 is relay 1), while the
+// Device interface is 1-based like every other board here.
+type dingtian struct {
+	host    string
+	session string // optional: the board can require "Cookie: session=<id>"
+	pwd     string // CGI password, 0–9999; "0" (or blank) when none is set
+	count   int
+}
+
+// NewDingtian builds a Dingtian IOT relay client. session is the HTTP session ID
+// when the board has "HTTP Session" enabled (blank otherwise); pwd is its relay
+// password (blank or "0" when none).
+func NewDingtian(host, session, pwd string, count int) Device {
+	if count <= 0 {
+		count = 2
+	}
+	if strings.TrimSpace(pwd) == "" {
+		pwd = "0"
+	}
+	return &dingtian{host: host, session: strings.TrimSpace(session), pwd: strings.TrimSpace(pwd), count: count}
+}
+
+func (d *dingtian) Count() int   { return d.count }
+func (d *dingtian) Close() error { return nil } // stateless HTTP, nothing to release
+
+// getCGI issues the GET with the session cookie the board may require.
+func (d *dingtian) getCGI(ctx context.Context, url string) ([]byte, error) {
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
+	if err != nil {
+		return nil, err
+	}
+	if d.session != "" {
+		req.Header.Set("Cookie", "session="+d.session)
+	}
+	resp, err := httpClient().Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+	body, _ := io.ReadAll(resp.Body)
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		return nil, fmt.Errorf("http %d: %s", resp.StatusCode, strings.TrimSpace(string(body)))
+	}
+	return body, nil
+}
+
+// dtFields splits an &-separated CGI reply into its fields, dropping the empty
+// ones the leading and trailing "&" produce.
+func dtFields(body []byte) []string {
+	var out []string
+	for _, f := range strings.Split(strings.TrimSpace(string(body)), "&") {
+		if f = strings.TrimSpace(f); f != "" {
+			out = append(out, f)
+		}
+	}
+	return out
+}
+
+func (d *dingtian) Set(ctx context.Context, relay int, on bool) error {
+	if relay < 1 || relay > d.count {
+		return fmt.Errorf("relay %d out of range 1..%d", relay, d.count)
+	}
+	state := 0
+	if on {
+		state = 1
+	}
+	// type=0 is plain ON/OFF (1 = jogging, 2 = delay, 3 = flash, 4 = toggle),
+	// and time is then unused.
+	body, err := d.getCGI(ctx, fmt.Sprintf("http://%s/relay_cgi.cgi?type=0&relay=%d&on=%d&time=0&pwd=%s&",
+		d.host, relay-1, state, d.pwd))
+	if err != nil {
+		return err
+	}
+	// A wrong password or session answers 200 with a non-zero result (e.g.
+	// "&302&/&"), so the HTTP status alone does not tell us it worked.
+	if f := dtFields(body); len(f) == 0 || f[0] != "0" {
+		return fmt.Errorf("dingtian: refused (%s) — check the relay password and the HTTP session ID",
+			strings.TrimSpace(string(body)))
+	}
+	return nil
+}
+
+func (d *dingtian) Status(ctx context.Context) ([]bool, error) {
+	body, err := d.getCGI(ctx, fmt.Sprintf("http://%s/relay_cgi_load.cgi", d.host))
+	if err != nil {
+		return nil, err
+	}
+	f := dtFields(body)
+	if len(f) < 2 || f[0] != "0" {
+		return nil, fmt.Errorf("dingtian: bad status reply %q", strings.TrimSpace(string(body)))
+	}
+	// The board reports its own relay count; trust it over the configured one so
+	// a mis-set channel count doesn't silently hide relays.
+	if n, e := strconv.Atoi(f[1]); e == nil && n > 0 && n <= 32 {
+		d.count = n
+	}
+	out := make([]bool, d.count)
+	for i := 0; i < d.count && i+2 < len(f); i++ {
+		out[i] = f[i+2] == "1"
+	}
+	return out, nil
+}

internal/relaydev/relaydev_test.go

@@ -99,3 +99,76 @@ func TestKMTronicSetURL(t *testing.T) {
 	}
 	_ = d.Set(context.Background(), 1, false) // → /FF0100
 }
+
+// Dingtian — the wire examples come straight from the IOT Relay Programming
+// Manual V1.9.8.1 §3.1/§3.2. The two traps pinned here: the URL relay index is
+// ZERO-based while the Device interface is 1-based, and a refusal (bad password
+// or session) answers HTTP 200 with a non-zero first field.
+
+func TestDingtianStatus(t *testing.T) {
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path != "/relay_cgi_load.cgi" {
+			t.Errorf("unexpected status path %q", r.URL.Path)
+		}
+		// Manual's own example: ok, 4 relays, 1 on, 2 off, 3 on, 4 off.
+		_, _ = w.Write([]byte("&0&4&1&0&1&0&"))
+	}))
+	defer srv.Close()
+
+	d := NewDingtian(strings.TrimPrefix(srv.URL, "http://"), "", "", 2)
+	st, err := d.Status(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	// The board said 4 relays even though 2 were configured — its count wins.
+	want := []bool{true, false, true, false}
+	if len(st) != len(want) {
+		t.Fatalf("got %d relays, want %d", len(st), len(want))
+	}
+	for i := range want {
+		if st[i] != want[i] {
+			t.Errorf("relay %d = %v, want %v", i+1, st[i], want[i])
+		}
+	}
+	if d.Count() != 4 {
+		t.Errorf("Count() = %d, want 4 (taken from the board)", d.Count())
+	}
+}
+
+func TestDingtianSetUsesZeroBasedIndexAndSession(t *testing.T) {
+	var gotQuery, gotCookie string
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		gotQuery = r.URL.RawQuery
+		gotCookie = r.Header.Get("Cookie")
+		_, _ = w.Write([]byte("&0&0&2&1&0&"))
+	}))
+	defer srv.Close()
+
+	d := NewDingtian(strings.TrimPrefix(srv.URL, "http://"), "12345678", "4660", 4)
+	if err := d.Set(context.Background(), 3, true); err != nil {
+		t.Fatal(err)
+	}
+	if !strings.Contains(gotQuery, "relay=2") {
+		t.Errorf("relay 3 must go out as relay=2 (zero-based); query was %q", gotQuery)
+	}
+	if !strings.Contains(gotQuery, "on=1") || !strings.Contains(gotQuery, "type=0") ||
+		!strings.Contains(gotQuery, "pwd=4660") {
+		t.Errorf("unexpected query %q", gotQuery)
+	}
+	if gotCookie != "session=12345678" {
+		t.Errorf("session cookie = %q, want session=12345678", gotCookie)
+	}
+}
+
+func TestDingtianSetRefusalIsAnError(t *testing.T) {
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
+		// Manual §3.4.4: a bad session still answers 200 OK.
+		_, _ = w.Write([]byte("&302&/&"))
+	}))
+	defer srv.Close()
+
+	d := NewDingtian(strings.TrimPrefix(srv.URL, "http://"), "", "", 2)
+	if err := d.Set(context.Background(), 1, true); err == nil {
+		t.Fatal("a refused command answered HTTP 200 and was reported as success")
+	}
+}

telemetry.go

@@ -21,7 +21,7 @@ import (
 
 const (
 	// appVersion is stamped on every heartbeat (and could feed the About box).
-	appVersion = "0.22.9"
+	appVersion = "0.23.2"
 
 	// posthogHost is the PostHog ingestion endpoint. EU cloud by default; change
 	// to https://us.i.posthog.com for a US project.

wiki/Amplifiers-and-Switches.md

@@ -57,10 +57,19 @@ Configure the host / password in Settings → Antenna Genius.
 
 ## Relay boards (Station Control)
 
-USB relay boards for antenna/accessory switching, with named buttons in Station
-Control: **Denkovi** (4/8 relays, FT245) and generic **CH340 / LCUS**
-USB-serial boards. A Test-connection button and detection feedback live in the
-setup panel.
+Relay boards for antenna/accessory switching, with named buttons in Station
+Control:
+
+- **WebSwitch 1216H** (5 relays, LAN) and **KMTronic** 8-relay WEB (LAN, with
+  optional HTTP authentication).
+- **Dingtian IOT relay** (2 to 32 relays, LAN or WiFi), driven over its HTTP
+  CGI. Give its IP address and pick the relay count; the **relay password** and
+  **session ID** fields are only needed if you enabled them on the board's own
+  web page — a factory board needs neither.
+- **Denkovi** USB (4/8 relays, FT245) and generic **CH340 / LCUS** USB-serial
+  boards.
+
+A Test-connection button and detection feedback live in the setup panel.
 
 ## Station Control