merge: Elecraft KPA500 and KPA1500 amplifiers

A fourth amplifier brand alongside the SPE, the Acom and the PowerGenius, sharing the same multi-amplifier support: the linking, the fan-out and the polling all work on it unchanged. The protocol is the Elecraft one — a caret, letters, a semicolon — decoded from the KPA1500 Programming Reference, with the document's own examples kept as the test. ^WS gives forward power and SWR in one exchange, ^VI gives volts in tenths and amps whole, and ^FL is HEX: read as decimal, the 'antenna not connected' fault matches nothing at all. Three things this amplifier does that the others do not, each handled where it shows: a KPA500 has no network side, the amplifier answers while its main supplies are off, and going to OPERATE clears the current fault. Nothing here has met real hardware yet.
2026-08-26 18:09:39 +02:00
parent 949b92d7e7 3013a2ba08
commit ff7227af5b
11 changed files with 972 additions and 30 deletions
@@ -43,6 +43,7 @@ import (
 	"hamlog/internal/geo"
 	"hamlog/internal/gridcache"
 	"hamlog/internal/integrations/udp"
+	"hamlog/internal/kpa"
 	"hamlog/internal/lookup"
 	"hamlog/internal/lotwusers"
 	"hamlog/internal/netctl"
@@ -18075,6 +18076,7 @@ type ampInst struct {
 	pgxl   *powergenius.Client
 	spe    *spe.Client
 	acom   *acom.Client
+	kpa    *kpa.Client
 	catemu *catemu.Server // Kenwood-format responder for band-follow (ACOM)
 }

@@ -18088,6 +18090,9 @@ func (i *ampInst) stopAll() {
 	if i.acom != nil {
 		i.acom.Stop()
 	}
+	if i.kpa != nil {
+		i.kpa.Stop()
+	}
 	if i.catemu != nil {
 		i.catemu.Stop()
 	}
@@ -18101,7 +18106,9 @@ func ampTypeLabel(t string) string {
 	case strings.HasPrefix(t, "spe"):
 		return "SPE " + map[string]string{"spe13": "1.3K-FA", "spe15": "1.5K-FA", "spe2k": "2K-FA"}[t]
 	case strings.HasPrefix(t, "acom"):
-		return "ACOM " + strings.TrimPrefix(t, "acom") + "S"
+		return "Acom " + strings.TrimPrefix(t, "acom") + "S"
+	case strings.HasPrefix(t, "kpa"):
+		return "Elecraft " + strings.ToUpper(t)
 	}
 	return t
 }
@@ -18213,6 +18220,19 @@ func (a *App) startAmps() {
 			if a.acom == nil {
 				a.acom = inst.acom
 			}
+		case strings.HasPrefix(c.Type, "kpa"):
+			// A KPA500 has no network port at all, so a configuration asking for
+			// one is a mistake worth naming rather than a connection that never
+			// succeeds.
+			if strings.EqualFold(c.Type, "kpa500") && c.Transport == "tcp" {
+				applog.Printf("amp %s: a KPA500 has no network connection — use its serial port", c.Name)
+				continue
+			}
+			inst.kpa = kpa.New(kpa.Config{
+				Model: strings.ToUpper(c.Type), Transport: c.Transport,
+				ComPort: c.ComPort, Baud: c.Baud, Host: c.Host, Port: c.Port,
+			})
+			_ = inst.kpa.Start()
 		default: // spe*
 			inst.spe = spe.New(spe.Config{Transport: c.Transport, ComPort: c.ComPort, Baud: c.Baud, Host: c.Host, Port: c.Port})
 			_ = inst.spe.Start()
@@ -18258,6 +18278,22 @@ func (a *App) feedAmpBandFollow(s cat.RigState) {
 			inst.catemu.SetFrequency(s.FreqHz)
 			inst.catemu.SetMode(s.Mode)
 		}
+		// A KPA is TOLD its band, on the link it is already on.
+		//
+		// The emulator above exists because an Acom polls a transceiver and has
+		// no command to be given a band; the KPA has one (^BN), so it needs
+		// neither a second serial port nor a pretend rig. Sent from a goroutine
+		// because this runs on the CAT state-change path, and nothing about the
+		// rig should wait on an amplifier's link.
+		// Asked for, like every other write to somebody's station. The option is
+		// the same one an Acom uses — "keep the amplifier on the radio's band" is
+		// one idea to an operator, whatever it takes underneath — and it is off
+		// for the operator who has wired the amplifier straight to the rig and
+		// does not want a second voice telling it where to be.
+		if inst.kpa != nil && inst.cfg.FreqOut && s.Band != "" {
+			k, band := inst.kpa, s.Band
+			go func() { _ = k.SetBand(band) }()
+		}
 	}
 }

@@ -18284,6 +18320,7 @@ type AmpStatus struct {
 	PGXL *powergenius.Status `json:"pgxl,omitempty"`
 	SPE  *spe.Status         `json:"spe,omitempty"`
 	ACOM *acom.Status        `json:"acom,omitempty"`
+	KPA  *kpa.Status         `json:"kpa,omitempty"`
 }

 // GetAmpStatuses returns the live state of every ENABLED amplifier, in the
@@ -18310,6 +18347,9 @@ func (a *App) GetAmpStatuses() []AmpStatus {
 			case inst.acom != nil:
 				v := inst.acom.GetStatus()
 				st.ACOM = &v
+			case inst.kpa != nil:
+				v := inst.kpa.GetStatus()
+				st.KPA = &v
 			}
 		}
 		out = append(out, st)
@@ -18391,6 +18431,8 @@ func (a *App) ampOperateOne(id string, on bool) error {
 		return inst.spe.Operate(on)
 	case inst.acom != nil:
 		return inst.acom.Operate(on)
+	case inst.kpa != nil:
+		return inst.kpa.Operate(on)
 	}
 	return fmt.Errorf("amplifier not running")
 }
@@ -18427,6 +18469,11 @@ func (a *App) ampPowerOne(id string, on, linked bool) error {
 			return inst.acom.PowerOn()
 		}
 		return inst.acom.PowerOff()
+	case inst.kpa != nil:
+		// OFF is a real power-down on a KPA1500: the main supplies drop and the
+		// way back on is the front panel or Wake-on-LAN. The button that reaches
+		// this asks first — see the UI — because "off" here is not standby.
+		return inst.kpa.PowerOn(on)
 	}
 	// Not an error worth surfacing when linked: a PGXL alongside two SPEs simply
 	// has no power command on its direct link, and reporting that as a failure
@@ -18522,7 +18569,7 @@ func (a *App) GetACOMStatus() acom.Status {
 // protocol has explicit commands for each, unlike the SPE's toggle key.
 func (a *App) ACOMSetOperate(on bool) error {
 	if a.acom == nil {
-		return fmt.Errorf("ACOM amplifier not connected — enable it in Settings → Amplifier")
+		return fmt.Errorf("Acom amplifier not connected — enable it in Settings → Amplifier")
 	}
 	return a.acom.Operate(on)
 }
@@ -18531,7 +18578,7 @@ func (a *App) ACOMSetOperate(on bool) error {
 // the power-on pins wired in the cable) or off (false, the OFF data command).
 func (a *App) ACOMSetPower(on bool) error {
 	if a.acom == nil {
-		return fmt.Errorf("ACOM amplifier not connected — enable it in Settings → Amplifier")
+		return fmt.Errorf("Acom amplifier not connected — enable it in Settings → Amplifier")
 	}
 	if on {
 		return a.acom.PowerOn()
@@ -1 +1 @@
-f9b41e192918fa2511f68cd1b361fcd3
+704fe1bf370b669665df0606fae8a69d
@@ -47,7 +47,7 @@ function powerLevelLabel(pl?: string): string {
  }
 }

-type Amp = { id: string; name: string; type?: string; spe?: any; acom?: any; pgxl?: any };
+type Amp = { id: string; name: string; type?: string; spe?: any; acom?: any; kpa?: any; pgxl?: any };

 export function AmpCard({ amp, flex, t }: { amp: Amp; flex: any; t: (k: string, v?: any) => string }) {
  // Peak-hold so the jittery VITA-49 meters read steadily (own ref per card).
@@ -64,6 +64,7 @@ export function AmpCard({ amp, flex, t }: { amp: Amp; flex: any; t: (k: string,

  const isSPE = !!amp.spe;
  const isACOM = !!amp.acom;
+  const isKPA = !!amp.kpa;

  if (isSPE) {
    const spe = amp.spe;
@@ -127,7 +128,7 @@ export function AmpCard({ amp, flex, t }: { amp: Amp; flex: any; t: (k: string,
  if (isACOM) {
    const acom = amp.acom;
    return (
-      <Card icon={Flame} ckey="amplifier" title={`${t('flxp.amplifier')} · ${amp.name || `ACOM${acom.model ? ' ' + acom.model : ''}`}`} accent="#ea580c">
+      <Card icon={Flame} ckey="amplifier" title={`${t('flxp.amplifier')} · ${amp.name || `Acom${acom.model ? ' ' + acom.model : ''}`}`} accent="#ea580c">
        <div className="flex items-center gap-3 flex-wrap">
          <button type="button" disabled={!acom.connected}
            onClick={() => AmpOperate(amp.id, !acom.operate).catch(() => {})}
@@ -168,6 +169,53 @@ export function AmpCard({ amp, flex, t }: { amp: Amp; flex: any; t: (k: string,
    );
  }

+  if (isKPA) {
+    const kpa = amp.kpa;
+    return (
+      <Card icon={Flame} ckey="amplifier" title={`${t('flxp.amplifier')} · ${amp.name || kpa.model || 'Elecraft'}`} accent="#ea580c">
+        <div className="flex items-center gap-3 flex-wrap">
+          <button type="button" disabled={!kpa.connected}
+            onClick={() => AmpOperate(amp.id, !kpa.operate).catch(() => {})}
+            title={kpa.fault_text ? t('flxp.kpaClearsFault') : undefined}
+            className={cn('px-4 py-2 rounded-lg text-sm font-extrabold tracking-wide border-2 transition-all disabled:opacity-30',
+              kpa.operate ? 'bg-warning text-warning-foreground border-warning shadow-[0_0_14px] shadow-warning/50' : 'bg-card text-warning border-warning hover:bg-warning-muted')}>
+            {kpa.operate ? 'OPERATE' : 'STANDBY'}
+          </button>
+          {/* The amplifier answers while its main supplies are off — a sleeping
+              microcontroller stays awake for exactly that — so ON is offered
+              over the network as well, unlike the SPE and Acom. */}
+          <div className="inline-flex rounded-lg overflow-hidden border-2 border-success/70">
+            <button type="button" disabled={!kpa.connected}
+              onClick={() => AmpPower(amp.id, true).catch(() => {})}
+              className="px-3 py-2 text-sm font-bold bg-card text-success hover:bg-success/15 disabled:opacity-30">ON</button>
+            <button type="button" disabled={!kpa.connected}
+              onClick={() => AmpPower(amp.id, false).catch(() => {})}
+              className="px-3 py-2 text-sm font-bold bg-card text-danger border-l-2 border-success/70 hover:bg-danger/15 disabled:opacity-30">OFF</button>
+          </div>
+          <span className={cn('inline-flex items-center gap-1.5 text-sm', kpa.connected ? 'text-muted-foreground' : 'text-danger')}>
+            <span className={cn('size-2 rounded-full', kpa.connected ? 'bg-success' : 'bg-danger')} />
+            {kpa.connected ? (kpa.tuning ? t('flxp.kpaTuning') : (kpa.power_on ? 'ON' : 'OFF')) : t('flxp.acomOffline')}
+          </span>
+          {kpa.connected && (
+            <span className="text-sm font-mono text-muted-foreground tabular-nums">
+              {kpa.band ? `${kpa.band} · ` : ''}{kpa.fwd_w}W · SWR {Number(kpa.swr ?? 0).toFixed(1)} · {kpa.temp_c}°C · {kpa.volt_v}V {kpa.cur_a}A
+            </span>
+          )}
+          <div className="flex-1" />
+          {kpa.fault_text && (
+            <span className="px-2 py-1 rounded bg-danger-muted text-danger-muted-foreground text-xs font-bold">⚠ {kpa.fault_text}</span>
+          )}
+        </div>
+        {kpa.connected && (
+          <MeterBar label={t('flxp.outputPower')} value={Number(kpa.fwd_w) || 0} unit="W"
+            lo={0} hi={String(kpa.model).includes('500') ? 500 : 1500}
+            display={`${Number(kpa.fwd_w) || 0} W`}
+            segColor={(f) => (f > 0.9 ? '#dc2626' : f > 0.75 ? '#f59e0b' : '#ea580c')} />
+        )}
+      </Card>
+    );
+  }
+
  // PowerGenius XL — OPERATE + meters ride on the Flex; fan mode on the GSCP link.
  const pg = amp.pgxl || {};
  const viaFlex = !!flex?.amp_available;
@@ -15,7 +15,7 @@ import { AmpOperate, AmpPower, AmpPowerLevel, AmpFanMode, FlexAmpOperate } from
 // With several amplifiers configured the caller passes a selection ("all" or an
 // amp id) chosen from the toolbar icon's dropdown.

-type Amp = { id: string; name: string; type?: string; spe?: any; acom?: any; pgxl?: any };
+type Amp = { id: string; name: string; type?: string; spe?: any; acom?: any; kpa?: any; pgxl?: any };

 // Full-scale watts for the output bar, from the model string.
 function maxW(model?: string, fallback = 1300): number {
@@ -92,27 +92,39 @@ function OperateButton({ operate, disabled, onClick, t }: {
 function AmpBlock({ amp, flex, showName, t }: {
  amp: Amp; flex: any; showName: boolean; t: (k: string, v?: any) => string;
 }) {
-  const spe = amp.spe, acom = amp.acom;
+  const spe = amp.spe, acom = amp.acom, kpaAmp = amp.kpa;
  const hold = usePeakHold();

-  if (spe || acom) {
-    const s = spe || acom;
+  // One block for the three amplifiers OpsLog drives over its own link. They
+  // report the same handful of things under different names, so the differences
+  // are named here rather than spread through the markup.
+  if (spe || acom || kpaAmp) {
+    const s = spe || acom || kpaAmp;
    // The amp reports zero watts on receive, so its TX flag clears the meter as
    // soon as the operator lets go — and the radio's own flag, when we have one,
    // gets there first (the amp is polled on its own slower cycle).
    const txing = typeof flex?.transmitting === 'boolean' ? flex.transmitting : s.tx !== false;
    const w = hold('w', Number(spe ? s.output_w : s.fwd_w) || 0, txing);
    const swr = Number(spe ? s.swr_ant : s.swr) || 0;
-    const hi = spe ? maxW(s.model) : (Number(s.max_w) || 800);
+    // The full-scale mark. A KPA500 reading against a 1500 W scale would look
+    // idle at full output, so the model decides it.
+    const hi = spe ? maxW(s.model)
+      : kpaAmp ? (String(s.model).includes('500') ? 500 : 1500)
+      : (Number(s.max_w) || 800);
    // Power ON drives the remote-on control lines, so it stays available while
    // the amplifier is off and reporting nothing — but only over a serial link.
-    const canPowerOn = spe ? (s.connected || s.transport === 'serial') : (s.port_open && s.transport === 'serial');
+    // A KPA answers ^ON while its main supplies are off — the sleeping
+    // microcontroller stays awake for exactly that — so power-on is available
+    // whenever the link itself is up, over serial and over the network alike.
+    const canPowerOn = spe ? (s.connected || s.transport === 'serial')
+      : kpaAmp ? !!s.connected
+      : (s.port_open && s.transport === 'serial');
    return (
      <div className="h-full flex flex-col gap-1.5">
        {showName && (
          <div className="flex items-center gap-1.5">
            <span className={cn('size-1.5 rounded-full shrink-0', s.connected ? 'bg-success shadow-[0_0_6px_rgba(16,185,129,0.8)]' : 'bg-danger')} />
-            <span className="text-[10px] font-bold uppercase tracking-wider truncate">{amp.name || (spe ? 'SPE' : 'ACOM')}</span>
+            <span className="text-[10px] font-bold uppercase tracking-wider truncate">{amp.name || (spe ? 'SPE' : kpaAmp ? (s.model || 'KPA') : 'Acom')}</span>
            {s.connected && s.band && <span className="ml-auto text-[9px] text-muted-foreground shrink-0">{s.band}</span>}
          </div>
        )}
@@ -155,11 +167,17 @@ function AmpBlock({ amp, flex, showName, t }: {
        ) : (
          <div className="text-[10px] text-center text-muted-foreground italic py-1">{t('ampw.offline')}</div>
        )}
-        {(s.warnings || s.alarms || s.err_text) && (
+        {(s.warnings || s.alarms || s.err_text || s.fault_text) && (
          <div className="rounded-md border border-danger-border bg-danger-muted text-danger-muted-foreground text-[9px] px-1.5 py-0.5 text-center break-words">
-            {s.err_text || `${s.warnings || ''} ${s.alarms || ''}`.trim()}
+            {s.fault_text || s.err_text || `${s.warnings || ''} ${s.alarms || ''}`.trim()}
          </div>
        )}
+        {/* Said where the fault is read, because it is the way out of it: on a
+            KPA, going to OPERATE clears the current fault — everything except
+            temperature, which clears by cooling. */}
+        {kpaAmp && s.fault_text && (
+          <div className="text-[9px] text-center text-muted-foreground">{t('ampw.kpaClear')}</div>
+        )}
        <PowerMeter label={t('flxp.outputPower')} watts={s.connected ? w : 0} maxWatts={hi} />
      </div>
    );
@@ -905,9 +905,10 @@ function AmpStatusCard({ id }: { id: string }) {
    const t = window.setInterval(tick, 1000);
    return () => { alive = false; window.clearInterval(t); };
  }, [id]);
-  const st: any = amp?.spe ?? amp?.acom ?? amp?.pgxl ?? { connected: false };
+  const st: any = amp?.spe ?? amp?.acom ?? amp?.kpa ?? amp?.pgxl ?? { connected: false };
  const isSPE = !!amp?.spe;
  const isACOM = !!amp?.acom;
+  const isKPA = !!amp?.kpa;
  const operate = !!st.operate;
  return (
    <div className="rounded-md border border-border p-3 space-y-2 text-xs max-w-xl">
@@ -948,7 +949,23 @@ function AmpStatusCard({ id }: { id: string }) {
          {st.err_text && <div className="col-span-4 text-warning">⚠ {st.err_text} ({st.err_code})</div>}
        </div>
      )}
-      {st.connected && !isSPE && !isACOM && (
+      {st.connected && isKPA && (
+        <div className="grid grid-cols-4 gap-x-3 gap-y-1 font-mono text-[11px]">
+          <div>{st.power_on ? 'ON' : 'OFF'}</div>
+          <div>Band {st.band || '—'}</div>
+          <div>{st.fwd_w} W</div>
+          <div>SWR {Number(st.swr ?? 0).toFixed(1)}</div>
+          <div>{st.volt_v} V</div>
+          <div>{st.cur_a} A</div>
+          <div>{st.temp_c}°C</div>
+          <div>{st.tuning ? 'TUNING' : ''}</div>
+          {/* A fault has already put the amplifier in standby by itself, so it
+              is the one thing worth the width — and OPERATE is the way out of
+              it, which the button above already is. */}
+          {st.fault_text && <div className="col-span-4 text-warning">⚠ {st.fault_text}</div>}
+        </div>
+      )}
+      {st.connected && !isSPE && !isACOM && !isKPA && (
        <div className="grid grid-cols-3 gap-x-3 gap-y-1 font-mono text-[11px]">
          <div>{st.state || ''}</div>
          <div>Fan {st.fan_mode || '—'}</div>
@@ -4142,15 +4159,28 @@ function SettingsModalImpl({ onClose, onSaved, initialSection, onMainPaneChanged
        { value: 'acom1200', label: '1200S' },
        { value: 'acom2020', label: '2020S' },
      ],
+      kpa: [
+        { value: 'kpa1500', label: 'KPA1500' },
+        { value: 'kpa500', label: 'KPA500' },
+      ],
    };
-    const brandOf = (ty: string) => (!ty || ty === 'pgxl') ? 'pgxl' : ty.startsWith('acom') ? 'acom' : 'spe';
+    const brandOf = (ty: string) => (!ty || ty === 'pgxl') ? 'pgxl'
+      : ty.startsWith('acom') ? 'acom'
+      : ty.startsWith('kpa') ? 'kpa' : 'spe';
    const patchAmp = (i: number, patch: Partial<AmpUI>) => setAmps((l) => l.map((a, j) => (j === i ? { ...a, ...patch } : a)));
    // Each family has a fixed serial speed: SPE talks 115200, the ACOM S-series is
    // 9600 8N1 — preset it so switching brand just works. PGXL is TCP-only.
+    // Each family has its own fixed serial speed and its own default port, so
+    // switching model leaves a working configuration rather than one the
+    // operator has to repair. A KPA500 has no network side at all — it is put
+    // on serial here rather than being allowed to sit on a TCP setting that
+    // could never connect.
    const applyType = (i: number, v: string) => patchAmp(i, {
      type: v,
-      transport: v === 'pgxl' ? 'tcp' : amps[i].transport,
-      baud: v.startsWith('acom') ? 9600 : v.startsWith('spe') ? 115200 : amps[i].baud,
+      freq_out: v.startsWith('kpa') ? true : amps[i].freq_out,
+      transport: v === 'pgxl' ? 'tcp' : v === 'kpa500' ? 'serial' : amps[i].transport,
+      baud: v.startsWith('acom') ? 9600 : v.startsWith('spe') ? 115200 : v.startsWith('kpa') ? 38400 : amps[i].baud,
+      port: v === 'kpa1500' ? 1500 : amps[i].port,
    });
    const addAmp = () => setAmps((l) => [...l, {
      id: '', name: '', enabled: true, type: 'spe13', transport: 'tcp', host: '', port: 9008, com_port: '', baud: 115200,
@@ -4167,6 +4197,7 @@ function SettingsModalImpl({ onClose, onSaved, initialSection, onMainPaneChanged
            const brand = brandOf(amp.type);
            const isPGXL = brand === 'pgxl';
            const isACOM = brand === 'acom';
+            const isKPA = brand === 'kpa';
            const isSerial = !isPGXL && amp.transport === 'serial';
            return (
              <div key={amp.id || `new-${i}`} className="rounded-lg border border-border p-3 space-y-3">
@@ -4194,7 +4225,8 @@ function SettingsModalImpl({ onClose, onSaved, initialSection, onMainPaneChanged
                      <SelectContent>
                        <SelectItem value="pgxl">4O3A</SelectItem>
                        <SelectItem value="spe">SPE</SelectItem>
-                        <SelectItem value="acom">ACOM</SelectItem>
+                        <SelectItem value="acom">Acom</SelectItem>
+                        <SelectItem value="kpa">Elecraft</SelectItem>
                      </SelectContent>
                    </Select>
                  </div>
@@ -4284,10 +4316,27 @@ function SettingsModalImpl({ onClose, onSaved, initialSection, onMainPaneChanged
                )}

                {/* Band-follow, for any amp that takes its band from a transceiver
-                    CAT link (ACOM and SPE both do) — never PowerGenius, which is
+                    CAT link (Acom and SPE both do) — never PowerGenius, which is
                    driven over its network protocol. A SECOND serial port,
-                    separate from the metering one above. */}
-                {!isPGXL && (
+                    separate from the metering one above.
+                    Never a KPA either: it has a band command of its own (^BN),
+                    so OpsLog tells it directly on the link it is already using.
+                    Offering a second serial port and a transceiver emulator for
+                    that would be a workaround for a problem this amplifier does
+                    not have. */}
+                {isKPA && (
+                  <div className="border-t border-border/60 pt-3 space-y-1">
+                    <label className="flex items-center gap-2 text-sm cursor-pointer">
+                      <Checkbox
+                        checked={!!amp.freq_out}
+                        onCheckedChange={(c) => patchAmp(i, { freq_out: !!c })}
+                      />
+                      {t('amp.kpaBandFollow')}
+                    </label>
+                    <p className="text-[11px] text-muted-foreground">{t('amp.kpaBandFollowHint')}</p>
+                  </div>
+                )}
+                {!isPGXL && !isKPA && (
                  <div className="border-t border-border/60 pt-3 space-y-3">
                    <label className="flex items-center gap-2 text-sm cursor-pointer">
                      <Checkbox
@@ -230,7 +230,7 @@ const en: Dict = {
  'gen.showBeam': 'Show the antenna beam heading on the Main map',
  'gen.startEqEnd': 'QSO start time = end time', 'gen.startEqEndHint': '(matches LoTW when you call a while)',
  'gen.showQsoRate': 'Show QSO rate in the header', 'gen.showQsoRateHint': '(QSOs/hour, projected from the last 10 / 60 min)',
-  'gen.lookupOnBlur': 'Look up the callsign only after leaving the field', 'gen.lookupOnBlurHint': '(not while typing)', 'amp.hint': 'Configure one or several amplifiers — each panel card has a dropdown to pick which one it shows.', 'amp.linked': 'Amplifiers commanded together', 'amp.linkedHint': 'Tick the ones sharing a combiner: ON, OFF and OPERATE will act on all of them at once, since one left in STANDBY would feed power to a single input. Any amplifier left unticked keeps its own buttons. Each keeps its own meters.', 'amp.linkedSaveFirst': 'Save first — an amplifier needs an id before it can join a group.', 'amp.none': 'No amplifier configured yet.', 'amp.namePh': 'Name (e.g. SPE left)', 'amp.remove': 'Remove this amplifier', 'amp.add': 'Add amplifier', 'amp.password': 'Remote code', 'amp.passwordPh': 'blank on LAN', 'amp.passwordHint': 'PowerGenius XL only: needed when reaching the amp remotely — it then announces "AUTH" and rejects every command ("Unauthorized") until you log in. Leave blank on the local network.', 'amp.freqOut': 'Send the frequency to the amplifier (band follow)', 'amp.freqPort': 'CAT/AUX COM port', 'amp.freqBroadcast': 'Also send unprompted', 'amp.freqPollOnly': 'No — answer the amplifier only', 'amp.freqEvery': 'Yes, every {ms} ms', 'amp.freqHint': 'OpsLog pretends to be a transceiver on this second port, in Kenwood format: set the amplifier to that command set (set 5 on an ACOM) at the same baud rate, and put it in OPERATE — in standby it acknowledges but does not switch band. An amplifier that POLLS (ACOM) needs nothing more; one that only LISTENS to the CAT line of the radio hears nothing unless you also turn on the unprompted send.',
+  'gen.lookupOnBlur': 'Look up the callsign only after leaving the field', 'gen.lookupOnBlurHint': '(not while typing)', 'amp.hint': 'Configure one or several amplifiers — each panel card has a dropdown to pick which one it shows.', 'amp.linked': 'Amplifiers commanded together', 'amp.linkedHint': 'Tick the ones sharing a combiner: ON, OFF and OPERATE will act on all of them at once, since one left in STANDBY would feed power to a single input. Any amplifier left unticked keeps its own buttons. Each keeps its own meters.', 'amp.linkedSaveFirst': 'Save first — an amplifier needs an id before it can join a group.', 'amp.none': 'No amplifier configured yet.', 'amp.namePh': 'Name (e.g. SPE left)', 'amp.remove': 'Remove this amplifier', 'amp.add': 'Add amplifier', 'amp.password': 'Remote code', 'amp.passwordPh': 'blank on LAN', 'amp.passwordHint': 'PowerGenius XL only: needed when reaching the amp remotely — it then announces "AUTH" and rejects every command ("Unauthorized") until you log in. Leave blank on the local network.', 'amp.kpaBandFollow': 'Keep the amplifier on the radio’s band', 'amp.kpaBandFollowHint': 'Sends the band number when it changes, on the link already open — no second serial port. Turn it off if the amplifier is wired straight to the radio and takes its band from there.', 'amp.freqOut': 'Send the frequency to the amplifier (band follow)', 'amp.freqPort': 'CAT/AUX COM port', 'amp.freqBroadcast': 'Also send unprompted', 'amp.freqPollOnly': 'No — answer the amplifier only', 'amp.freqEvery': 'Yes, every {ms} ms', 'amp.freqHint': 'OpsLog pretends to be a transceiver on this second port, in Kenwood format: set the amplifier to that command set (set 5 on an Acom) at the same baud rate, and put it in OPERATE — in standby it acknowledges but does not switch band. An amplifier that POLLS (Acom) needs nothing more; one that only LISTENS to the CAT line of the radio hears nothing unless you also turn on the unprompted send.',
  'gen.groupDigital': 'Group digital modes as one (DXCC-style)', 'gen.groupDigitalHint': '(matrix badges + cluster: FT8/FT4/RTTY… count as a single Digital mode; off = each digital mode is its own slot)',
  // Password encryption
  'gen.pwEnc': 'Password encryption',
@@ -419,7 +419,7 @@ const en: Dict = {
  'agp.portDeselect': 'Port {letter} — click to deselect', 'agp.portSelect': 'Select on port {letter}', 'agp.online': 'online', 'agp.offline': 'offline', 'agp.close': 'Close', 'agp.connecting': 'Connecting…', 'agp.noAntennas': 'No antennas configured.', 'agp.filterOnHint': 'Showing antennas for {band} only — click to show all bands', 'agp.filterOffHint': 'Showing all antennas — click to show only the current band',
  'ampw.title': 'Amplifier', 'ampw.all': 'All amplifiers', 'ampw.pick': 'Which amplifier the widget shows',
  'ampw.showHint': 'Amplifier · click to show', 'ampw.hideHint': 'Amplifier — shown · click to hide',
-  'ampw.close': 'Close', 'ampw.offline': 'offline', 'ampw.none': 'No amplifier configured',
+  'ampw.close': 'Close', 'ampw.offline': 'offline', 'ampw.kpaClear': 'OPERATE clears this fault', 'ampw.none': 'No amplifier configured',
  'ampw.operate': 'Operate', 'ampw.standby': 'Standby', 'ampw.on': 'ON', 'ampw.off': 'OFF',
  'ampw.lvlL': 'Low', 'ampw.lvlM': 'Mid', 'ampw.lvlH': 'High',
  'ampw.pwr': 'Watts', 'ampw.swr': 'SWR', 'ampw.temp': 'Temp', 'ampw.id': 'Id (A)', 'ampw.fan': 'Fan mode',
@@ -427,7 +427,7 @@ const en: Dict = {
  'tgp.title': 'Tuner Genius', 'tgp.chActive': 'Channel {letter} — active', 'tgp.chSelect': 'Make channel {letter} active', 'tgp.chActiveTag': 'active', 'tgp.ant': 'Ant', 'tgp.bypassed': 'Bypassed', 'tgp.inLine': 'In line',
  'flxp.ritHint': 'RIT — shifts your RECEIVE frequency only. Wheel, ± or arrow keys to adjust (Ctrl = 100 Hz). The offset is kept when you switch it off.', 'flxp.xitHint': 'XIT — shifts your TRANSMIT frequency only. Wheel, ± or arrow keys to adjust (Ctrl = 100 Hz). The offset is kept when you switch it off.',
  'flxp.smartsdrRemote': 'SmartSDR remote control', 'flxp.offline': 'OFFLINE', 'flxp.waiting': 'Waiting for the FlexRadio… (set CAT to FlexRadio and connect)', 'flxp.transmit': 'Transmit', 'flxp.rfPower': 'RF Power', 'flxp.tunePwr': 'Tune Pwr', 'flxp.rstChaseHint': 'Chase the pile-up: when the CW skimmer marks a report ({m}) on the panadapter, move the TRANSMIT slice there — that is where the DX was listening a second ago. The receive slice never moves. Right-click to change the marker text.', 'flxp.rstChaseMarkerHint': 'The text the skimmer writes for a report — whatever SDC is set to send (599, 5NN…). Several can be given, separated by commas; add the old-report marker to chase those too.', 'flxp.rstChaseOffset': 'off', 'k3.console': 'Elecraft Console', 'k3.waiting': 'Waiting for the radio… (set CAT to Elecraft or Kenwood and connect)', 'k3.rfGain': 'RF gain', 'k3.micGain': 'Mic', 'k3.squelch': 'Squelch', 'k3.filter': 'Filter', 'k3.antenna': 'Antenna', 'k3.clear': 'CLEAR', 'k3.keySpeed': 'Keyer', 'k3.meters': 'Meters', 'k3.levels': 'Levels', 'k3.receive': 'Receive', 'k3.power': 'Power', 'k3.volume': 'Volume', 'k3.refreshHint': 'Re-read the settings from the radio — for when a knob was turned on the front panel.', 'k3.sMeterHint': 'Click to use this reading as the report sent. Raw value from the rig: {raw}.', 'k3.atuHint': 'Put the ATU in line or bypass it (a hold of the K3 ATU switch).', 'k3.tuneHint': 'Start an ATU tuning cycle (K3: a tap of the ATU TUNE button). The exact command sent is written to the log.', 'k3.provisional': 'Meter scaling is provisional: it has not yet been confirmed against a real K3, and the raw readings are written to the log so it can be.', 'flxp.splitHint': 'Split: RX/TX on separate slices. ON creates a TX slice +1 kHz (CW) / +5 kHz (SSB) up, like SmartSDR.', 'flxp.sliceHint': 'Click to make this the active slice — frequency, mode, DSP and spot-clicks all follow it.', 'flxp.txSlice': 'This slice transmits', 'flxp.setTxSlice': 'Move TX to this slice (transmit here)', 'flxp.voxDly': 'VOX Dly', 'flxp.speed': 'Speed', 'flxp.pitch': 'Pitch', 'flxp.delay': 'Delay',
-  'flxp.receiveActive': 'Receive (active slice)', 'flxp.muted': 'Muted — click to unmute', 'flxp.mute': 'Mute RX audio', 'flxp.filter': 'Filter', 'flxp.amplifier': 'Amplifier', 'flxp.atuTune': 'TUNE', 'flxp.atuTuneHint': 'Start a tuning cycle on the built-in ATU. The radio keys a carrier itself to measure the match.', 'flxp.atuBypass': 'BYPASS', 'flxp.atuBypassHint': 'Take the ATU out of line (straight through).', 'flxp.atuMem': 'MEM', 'flxp.atuMemHint': 'Reuse the stored tuning solution for this frequency instead of tuning again.', 'flxp.atuIdle': 'not tuned', 'flxp.atuTuning': 'tuning…', 'flxp.atuOk': 'tuned', 'flxp.atuFail': 'TUNE FAILED', 'flxp.atuBypassed': 'bypassed', 'flxp.atuAborted': 'aborted', 'flxp.ampInLine': 'Amplifier is in line (transmitting through PA).', 'flxp.ampBypassed': 'Amplifier bypassed (standby).', 'flxp.pgConnected': 'PowerGenius connected', 'flxp.pgOffline': 'PowerGenius offline', 'flxp.fan': 'Fan', 'flxp.fanStandard': 'Standard', 'flxp.fanContest': 'Contest', 'flxp.fanBroadcast': 'Broadcast', 'flxp.fault': 'FAULT', 'flxp.meters': 'Meters', 'flxp.voltage': 'VOLTAGE', 'flxp.paTemp': 'PA TEMP', 'flxp.txFilter': 'TX filter', 'flxp.micProfile': 'Mic profile', 'flxp.noMeters': "No meters yet — waiting for the radio's UDP stream…", 'flxp.amplifierHdr': 'AMPLIFIER', 'flxp.outputPower': 'OUTPUT POWER', 'flxp.speOffline': 'SPE offline', 'flxp.acomOffline': 'ACOM offline', 'flxp.ampPick': 'Choose which amplifier this card shows', 'flxp.dspV4Hint': 'SmartSDR v4 DSP (8000/Aurora series)', 'flxp.daxHint': 'DAX as the transmit audio source (SmartSDR transmit-bar DAX button) — for WSJT-X & co', 'flxp.rnnHint': 'RNN — AI noise reduction (on/off)', 'flxp.anftHint': 'ANFT — FFT-based automatic notch filter (on/off)', 'flxp.dspNoise': 'Noise', 'flxp.dspMore': 'Show/hide advanced DSP (WNB, v4 NR/notch)',
+  'flxp.receiveActive': 'Receive (active slice)', 'flxp.muted': 'Muted — click to unmute', 'flxp.mute': 'Mute RX audio', 'flxp.filter': 'Filter', 'flxp.amplifier': 'Amplifier', 'flxp.atuTune': 'TUNE', 'flxp.atuTuneHint': 'Start a tuning cycle on the built-in ATU. The radio keys a carrier itself to measure the match.', 'flxp.atuBypass': 'BYPASS', 'flxp.atuBypassHint': 'Take the ATU out of line (straight through).', 'flxp.atuMem': 'MEM', 'flxp.atuMemHint': 'Reuse the stored tuning solution for this frequency instead of tuning again.', 'flxp.atuIdle': 'not tuned', 'flxp.atuTuning': 'tuning…', 'flxp.atuOk': 'tuned', 'flxp.atuFail': 'TUNE FAILED', 'flxp.atuBypassed': 'bypassed', 'flxp.atuAborted': 'aborted', 'flxp.ampInLine': 'Amplifier is in line (transmitting through PA).', 'flxp.ampBypassed': 'Amplifier bypassed (standby).', 'flxp.pgConnected': 'PowerGenius connected', 'flxp.pgOffline': 'PowerGenius offline', 'flxp.fan': 'Fan', 'flxp.fanStandard': 'Standard', 'flxp.fanContest': 'Contest', 'flxp.fanBroadcast': 'Broadcast', 'flxp.fault': 'FAULT', 'flxp.meters': 'Meters', 'flxp.voltage': 'VOLTAGE', 'flxp.paTemp': 'PA TEMP', 'flxp.txFilter': 'TX filter', 'flxp.micProfile': 'Mic profile', 'flxp.noMeters': "No meters yet — waiting for the radio's UDP stream…", 'flxp.amplifierHdr': 'AMPLIFIER', 'flxp.outputPower': 'OUTPUT POWER', 'flxp.speOffline': 'SPE offline', 'flxp.acomOffline': 'Acom offline', 'flxp.kpaTuning': 'TUNING', 'flxp.kpaClearsFault': 'OPERATE also clears the current fault (except temperature, which clears as it cools)', 'flxp.ampPick': 'Choose which amplifier this card shows', 'flxp.dspV4Hint': 'SmartSDR v4 DSP (8000/Aurora series)', 'flxp.daxHint': 'DAX as the transmit audio source (SmartSDR transmit-bar DAX button) — for WSJT-X & co', 'flxp.rnnHint': 'RNN — AI noise reduction (on/off)', 'flxp.anftHint': 'ANFT — FFT-based automatic notch filter (on/off)', 'flxp.dspNoise': 'Noise', 'flxp.dspMore': 'Show/hide advanced DSP (WNB, v4 NR/notch)',
  'icmp.spectrum': 'Spectrum', 'icmp.scopeFixed': 'Fixed — double-click / wheel to tune', 'icmp.scopeCenter': 'Center — follows VFO', 'icmp.scopeOff': 'Scope off', 'icmp.scopePanDown': 'Shift scope −50 kHz', 'icmp.scopePanUp': 'Shift scope +50 kHz', 'icmp.scopeCenterVfo': 'Center scope on the current frequency (±50 kHz)', 'icmp.notConnected': "Icom not connected. Enable the Icom CI-V backend in Settings → CAT and connect the radio's USB port.", 'icmp.refresh': 'Refresh', 'icmp.meters': 'Meters', 'icmp.transmit': 'Transmit', 'icmp.power': 'Power', 'icmp.mic': 'Mic', 'icmp.receive': 'Receive', 'icmp.preamp': 'Preamp', 'icmp.filter': 'Filter', 'icmp.noiseNotch': 'Noise / Notch', 'icmp.autoNotch': 'Auto notch filter', 'icmp.apf': 'Audio peak filter (CW)', 'icmp.clarifiers': 'RIT / ΔTX', 'icmp.ritHint': 'Wheel or ± to shift · Ctrl+←/→ shifts RIT when active', 'icmp.bandsAntenna': 'Bands & Antenna', 'icmp.bandCurrent': 'The rig is on {b} m', 'icmp.antenna': 'Antenna', 'icmp.passband': 'Passband / Notch', 'icmp.pbtCenter': 'Center PBT', 'icmp.manualNotch': 'Manual notch — MN on, then set position', 'icmp.squelch': 'Squelch', 'icmp.powerOnHint': 'Power the radio ON (boots ~15 s)', 'icmp.powerOffHint': 'Power the radio OFF', 'icmp.powerOffConfirm': 'Switch the radio OFF?',
  'rst.clickToFill': 'Click to set RST tx from the signal',
  'qrz.openTitle': 'Open {call} on QRZ.com',
@@ -716,7 +716,7 @@ const fr: Dict = {
  'gen.showBeam': 'Afficher le cap de l\'antenne sur la carte principale',
  'gen.startEqEnd': 'Heure de début du QSO = heure de fin', 'gen.startEqEndHint': '(correspond à LoTW quand tu appelles un moment)',
  'gen.showQsoRate': 'Afficher le rythme QSO dans la barre du haut', 'gen.showQsoRateHint': '(QSO/heure, projeté sur les 10 / 60 dernières min)',
-  'gen.lookupOnBlur': 'Rechercher l\'indicatif seulement après avoir quitté le champ', 'gen.lookupOnBlurHint': '(pas pendant la saisie)', 'amp.hint': 'Configurez un ou plusieurs amplificateurs — chaque carte de panneau a une liste déroulante pour choisir lequel afficher.', 'amp.linked': 'Amplificateurs commandés ensemble', 'amp.linkedHint': "Coche ceux qui partagent un combiner : ON, OFF et OPERATE agiront sur tous à la fois, puisqu'un ampli resté en STANDBY n'alimenterait qu'une seule entrée. Un amplificateur non coché garde ses propres boutons. Chacun garde ses mesures.", 'amp.linkedSaveFirst': "Enregistre d'abord — un amplificateur a besoin d'un identifiant pour rejoindre un groupe.", 'amp.none': 'Aucun amplificateur configuré.', 'amp.namePh': 'Nom (p. ex. SPE gauche)', 'amp.remove': 'Supprimer cet amplificateur', 'amp.add': 'Ajouter un amplificateur', 'amp.password': 'Code distant', 'amp.passwordPh': 'vide en LAN', 'amp.passwordHint': "PowerGenius XL uniquement : nécessaire pour joindre l'ampli à distance — il annonce alors « AUTH » et refuse toute commande (« Unauthorized ») tant qu'on n'est pas identifié. Laisse vide sur le réseau local.", 'amp.freqOut': "Envoyer la fréquence à l'amplificateur (suivi de bande)", 'amp.freqPort': 'Port COM CAT/AUX', 'amp.freqBroadcast': 'Envoyer aussi sans être interrogé', 'amp.freqPollOnly': "Non — répondre seulement à l'amplificateur", 'amp.freqEvery': 'Oui, toutes les {ms} ms', 'amp.freqHint': "OpsLog se fait passer pour un transceiver sur ce second port, au format Kenwood : réglez l'amplificateur sur ce jeu de commandes (le jeu 5 sur un ACOM) à la même vitesse, et mettez-le en OPERATE — en veille il acquitte mais ne change pas de bande. Un amplificateur qui INTERROGE (ACOM) n'a besoin de rien de plus ; un amplificateur qui se contente d'ÉCOUTER la liaison CAT de la radio n'entendra rien tant que l'envoi spontané n'est pas activé.",
+  'gen.lookupOnBlur': 'Rechercher l\'indicatif seulement après avoir quitté le champ', 'gen.lookupOnBlurHint': '(pas pendant la saisie)', 'amp.hint': 'Configurez un ou plusieurs amplificateurs — chaque carte de panneau a une liste déroulante pour choisir lequel afficher.', 'amp.linked': 'Amplificateurs commandés ensemble', 'amp.linkedHint': "Coche ceux qui partagent un combiner : ON, OFF et OPERATE agiront sur tous à la fois, puisqu'un ampli resté en STANDBY n'alimenterait qu'une seule entrée. Un amplificateur non coché garde ses propres boutons. Chacun garde ses mesures.", 'amp.linkedSaveFirst': "Enregistre d'abord — un amplificateur a besoin d'un identifiant pour rejoindre un groupe.", 'amp.none': 'Aucun amplificateur configuré.', 'amp.namePh': 'Nom (p. ex. SPE gauche)', 'amp.remove': 'Supprimer cet amplificateur', 'amp.add': 'Ajouter un amplificateur', 'amp.password': 'Code distant', 'amp.passwordPh': 'vide en LAN', 'amp.passwordHint': "PowerGenius XL uniquement : nécessaire pour joindre l'ampli à distance — il annonce alors « AUTH » et refuse toute commande (« Unauthorized ») tant qu'on n'est pas identifié. Laisse vide sur le réseau local.", 'amp.kpaBandFollow': "Garder l'amplificateur sur la bande de la radio", 'amp.kpaBandFollowHint': "Envoie le numéro de bande quand elle change, sur la liaison déjà ouverte — pas de second port série. À désactiver si l'amplificateur est câblé directement à la radio et prend sa bande de là.", 'amp.freqOut': "Envoyer la fréquence à l'amplificateur (suivi de bande)", 'amp.freqPort': 'Port COM CAT/AUX', 'amp.freqBroadcast': 'Envoyer aussi sans être interrogé', 'amp.freqPollOnly': "Non — répondre seulement à l'amplificateur", 'amp.freqEvery': 'Oui, toutes les {ms} ms', 'amp.freqHint': "OpsLog se fait passer pour un transceiver sur ce second port, au format Kenwood : réglez l'amplificateur sur ce jeu de commandes (le jeu 5 sur un Acom) à la même vitesse, et mettez-le en OPERATE — en veille il acquitte mais ne change pas de bande. Un amplificateur qui INTERROGE (Acom) n'a besoin de rien de plus ; un amplificateur qui se contente d'ÉCOUTER la liaison CAT de la radio n'entendra rien tant que l'envoi spontané n'est pas activé.",
  'gen.groupDigital': 'Regrouper les modes digitaux en un seul (style DXCC)', 'gen.groupDigitalHint': '(badges de la matrice + cluster : FT8/FT4/RTTY… comptent comme un seul mode Digital ; décoché = chaque mode digital est un slot distinct)',
  // Chiffrement des mots de passe
  'gen.pwEnc': 'Chiffrement des mots de passe',
@@ -891,7 +891,7 @@ const fr: Dict = {
  'agp.portDeselect': 'Port {letter} — clic pour désélectionner', 'agp.portSelect': 'Sélectionner sur le port {letter}', 'agp.online': 'en ligne', 'agp.offline': 'hors ligne', 'agp.close': 'Fermer', 'agp.connecting': 'Connexion…', 'agp.noAntennas': 'Aucune antenne configurée.', 'agp.filterOnHint': 'Antennes du {band} uniquement — clic pour afficher toutes les bandes', 'agp.filterOffHint': 'Toutes les antennes affichées — clic pour n’afficher que la bande courante',
  'ampw.title': 'Amplificateur', 'ampw.all': 'Tous les amplis', 'ampw.pick': 'Ampli affiché par le widget',
  'ampw.showHint': 'Amplificateur · cliquer pour afficher', 'ampw.hideHint': 'Amplificateur — affiché · cliquer pour masquer',
-  'ampw.close': 'Fermer', 'ampw.offline': 'hors ligne', 'ampw.none': 'Aucun amplificateur configuré',
+  'ampw.close': 'Fermer', 'ampw.offline': 'hors ligne', 'ampw.kpaClear': 'OPERATE efface ce défaut', 'ampw.none': 'Aucun amplificateur configuré',
  'ampw.operate': 'Operate', 'ampw.standby': 'Standby', 'ampw.on': 'ON', 'ampw.off': 'OFF',
  'ampw.lvlL': 'Low', 'ampw.lvlM': 'Mid', 'ampw.lvlH': 'High',
  'ampw.pwr': 'Watts', 'ampw.swr': 'ROS', 'ampw.temp': 'Temp', 'ampw.id': 'Id (A)', 'ampw.fan': 'Mode ventil.',
@@ -899,7 +899,7 @@ const fr: Dict = {
  'tgp.title': 'Tuner Genius', 'tgp.chActive': 'Canal {letter} — actif', 'tgp.chSelect': 'Activer le canal {letter}', 'tgp.chActiveTag': 'actif', 'tgp.ant': 'Ant', 'tgp.bypassed': 'Bypass', 'tgp.inLine': 'En ligne',
  'flxp.ritHint': "RIT — décale uniquement ta fréquence de RÉCEPTION. Molette, ± ou flèches pour ajuster (Ctrl = 100 Hz). Le décalage est conservé quand tu l'éteins.", 'flxp.xitHint': "XIT — décale uniquement ta fréquence d'ÉMISSION. Molette, ± ou flèches pour ajuster (Ctrl = 100 Hz). Le décalage est conservé quand tu l'éteins.",
  'flxp.smartsdrRemote': 'Contrôle à distance SmartSDR', 'flxp.offline': 'HORS LIGNE', 'flxp.waiting': 'En attente du FlexRadio… (règle le CAT sur FlexRadio et connecte)', 'flxp.transmit': 'Émission', 'flxp.rfPower': 'Puissance RF', 'flxp.tunePwr': 'Puiss. TUNE', 'flxp.rstChaseHint': "Chasser le pile-up : quand le skimmer CW marque un report ({m}) sur le panadapter, déplacer la slice d'ÉMISSION dessus — c'est là que le DX écoutait il y a une seconde. La slice de réception ne bouge jamais. Clic droit pour changer le texte du marqueur.", 'flxp.rstChaseMarkerHint': "Le texte que le skimmer écrit pour un report — ce que SDC est réglé à envoyer (599, 5NN…). On peut en mettre plusieurs, séparés par des virgules ; ajoute le marqueur des reports anciens pour les chasser aussi.", 'flxp.rstChaseOffset': 'off', 'k3.console': 'Console Elecraft', 'k3.waiting': 'En attente de la radio… (règle le CAT sur Elecraft ou Kenwood et connecte)', 'k3.rfGain': 'Gain HF', 'k3.micGain': 'Micro', 'k3.squelch': 'Squelch', 'k3.filter': 'Filtre', 'k3.antenna': 'Antenne', 'k3.clear': 'EFFACER', 'k3.keySpeed': 'Manip', 'k3.meters': 'Mesures', 'k3.levels': 'Niveaux', 'k3.receive': 'Réception', 'k3.power': 'Puissance', 'k3.volume': 'Volume', 'k3.refreshHint': "Relire les réglages depuis la radio — quand un bouton a été tourné en façade.", 'k3.sMeterHint': 'Cliquer pour utiliser cette lecture comme report envoyé. Valeur brute de la radio : {raw}.', 'k3.atuHint': "Mettre la boîte d'accord en ligne ou la contourner (maintien de la touche ATU du K3).", 'k3.tuneHint': "Lancer un cycle d'accord de l'ATU (K3 : appui sur la touche ATU TUNE). La commande exacte envoyée est écrite dans le journal.", 'k3.provisional': "L'échelle des mesures est provisoire : elle n'a pas encore été confirmée sur un vrai K3, et les valeurs brutes sont écrites dans le journal pour qu'elle puisse l'être.", 'flxp.splitHint': 'Split : RX/TX sur des slices séparées. ON crée une slice TX +1 kHz (CW) / +5 kHz (SSB) au-dessus, comme SmartSDR.', 'flxp.sliceHint': 'Cliquer pour rendre cette slice active — fréquence, mode, DSP et clics de spot la suivent tous.', 'flxp.txSlice': 'Cette slice émet', 'flxp.setTxSlice': 'Déplacer le TX sur cette slice (émettre ici)', 'flxp.voxDly': 'Délai VOX', 'flxp.speed': 'Vitesse', 'flxp.pitch': 'Tonalité', 'flxp.delay': 'Délai',
-  'flxp.receiveActive': 'Réception (slice active)', 'flxp.muted': 'Coupé — clic pour rétablir', 'flxp.mute': "Couper l'audio RX", 'flxp.filter': 'Filtre', 'flxp.amplifier': 'Amplificateur', 'flxp.atuTune': 'ACCORD', 'flxp.atuTuneHint': "Lance un cycle d'accord sur le coupleur intégré. La radio émet elle-même une porteuse pour mesurer l'adaptation.", 'flxp.atuBypass': 'BYPASS', 'flxp.atuBypassHint': 'Sort le coupleur de la ligne (passage direct).', 'flxp.atuMem': 'MEM', 'flxp.atuMemHint': "Réutilise l'accord mémorisé pour cette fréquence au lieu de refaire un cycle.", 'flxp.atuIdle': 'non accordé', 'flxp.atuTuning': 'accord en cours…', 'flxp.atuOk': 'accordé', 'flxp.atuFail': 'ÉCHEC ACCORD', 'flxp.atuBypassed': 'contourné', 'flxp.atuAborted': 'interrompu', 'flxp.ampInLine': 'Amplificateur en ligne (émission via le PA).', 'flxp.ampBypassed': 'Amplificateur en bypass (standby).', 'flxp.pgConnected': 'PowerGenius connecté', 'flxp.pgOffline': 'PowerGenius hors ligne', 'flxp.fan': 'Ventilo', 'flxp.fanStandard': 'Standard', 'flxp.fanContest': 'Contest', 'flxp.fanBroadcast': 'Diffusion', 'flxp.fault': 'DÉFAUT', 'flxp.meters': 'Mesures', 'flxp.voltage': 'TENSION', 'flxp.paTemp': 'TEMP PA', 'flxp.txFilter': 'Filtre TX', 'flxp.micProfile': 'Profil micro', 'flxp.noMeters': 'Aucune mesure — en attente du flux UDP de la radio…', 'flxp.amplifierHdr': 'AMPLIFICATEUR', 'flxp.outputPower': 'PUISSANCE DE SORTIE', 'flxp.speOffline': 'SPE hors ligne', 'flxp.acomOffline': 'ACOM hors ligne', 'flxp.ampPick': 'Choisir quel amplificateur cette carte affiche', 'flxp.dspV4Hint': 'DSP SmartSDR v4 (séries 8000/Aurora)', 'flxp.daxHint': "DAX comme source audio d'émission (bouton DAX du bandeau transmit de SmartSDR) — pour WSJT-X & co", 'flxp.rnnHint': 'RNN — réduction de bruit par IA (on/off)', 'flxp.anftHint': 'ANFT — filtre notch automatique FFT (on/off)', 'flxp.dspNoise': 'Bruit', 'flxp.dspMore': 'Afficher/masquer le DSP avancé (WNB, NR/notch v4)',
+  'flxp.receiveActive': 'Réception (slice active)', 'flxp.muted': 'Coupé — clic pour rétablir', 'flxp.mute': "Couper l'audio RX", 'flxp.filter': 'Filtre', 'flxp.amplifier': 'Amplificateur', 'flxp.atuTune': 'ACCORD', 'flxp.atuTuneHint': "Lance un cycle d'accord sur le coupleur intégré. La radio émet elle-même une porteuse pour mesurer l'adaptation.", 'flxp.atuBypass': 'BYPASS', 'flxp.atuBypassHint': 'Sort le coupleur de la ligne (passage direct).', 'flxp.atuMem': 'MEM', 'flxp.atuMemHint': "Réutilise l'accord mémorisé pour cette fréquence au lieu de refaire un cycle.", 'flxp.atuIdle': 'non accordé', 'flxp.atuTuning': 'accord en cours…', 'flxp.atuOk': 'accordé', 'flxp.atuFail': 'ÉCHEC ACCORD', 'flxp.atuBypassed': 'contourné', 'flxp.atuAborted': 'interrompu', 'flxp.ampInLine': 'Amplificateur en ligne (émission via le PA).', 'flxp.ampBypassed': 'Amplificateur en bypass (standby).', 'flxp.pgConnected': 'PowerGenius connecté', 'flxp.pgOffline': 'PowerGenius hors ligne', 'flxp.fan': 'Ventilo', 'flxp.fanStandard': 'Standard', 'flxp.fanContest': 'Contest', 'flxp.fanBroadcast': 'Diffusion', 'flxp.fault': 'DÉFAUT', 'flxp.meters': 'Mesures', 'flxp.voltage': 'TENSION', 'flxp.paTemp': 'TEMP PA', 'flxp.txFilter': 'Filtre TX', 'flxp.micProfile': 'Profil micro', 'flxp.noMeters': 'Aucune mesure — en attente du flux UDP de la radio…', 'flxp.amplifierHdr': 'AMPLIFICATEUR', 'flxp.outputPower': 'PUISSANCE DE SORTIE', 'flxp.speOffline': 'SPE hors ligne', 'flxp.acomOffline': 'Acom hors ligne', 'flxp.kpaTuning': 'ACCORD', 'flxp.kpaClearsFault': "OPERATE efface aussi le défaut courant (sauf la température, qui s'efface en refroidissant)", 'flxp.ampPick': 'Choisir quel amplificateur cette carte affiche', 'flxp.dspV4Hint': 'DSP SmartSDR v4 (séries 8000/Aurora)', 'flxp.daxHint': "DAX comme source audio d'émission (bouton DAX du bandeau transmit de SmartSDR) — pour WSJT-X & co", 'flxp.rnnHint': 'RNN — réduction de bruit par IA (on/off)', 'flxp.anftHint': 'ANFT — filtre notch automatique FFT (on/off)', 'flxp.dspNoise': 'Bruit', 'flxp.dspMore': 'Afficher/masquer le DSP avancé (WNB, NR/notch v4)',
  'icmp.spectrum': 'Spectre', 'icmp.scopeFixed': 'Fixe — double-clic / molette pour accorder', 'icmp.scopeCenter': 'Centré — suit le VFO', 'icmp.scopeOff': 'Scope éteint', 'icmp.scopePanDown': 'Décaler le scope −50 kHz', 'icmp.scopePanUp': 'Décaler le scope +50 kHz', 'icmp.scopeCenterVfo': 'Centrer le scope sur la fréquence actuelle (±50 kHz)', 'icmp.notConnected': 'Icom non connecté. Active le backend CI-V Icom dans Réglages → CAT et connecte le port USB de la radio.', 'icmp.refresh': 'Rafraîchir', 'icmp.meters': 'Mesures', 'icmp.transmit': 'Émission', 'icmp.power': 'Puissance', 'icmp.mic': 'Micro', 'icmp.receive': 'Réception', 'icmp.preamp': 'Préampli', 'icmp.filter': 'Filtre', 'icmp.noiseNotch': 'Bruit / Notch', 'icmp.autoNotch': 'Filtre notch auto', 'icmp.apf': 'Filtre de pic audio (CW)', 'icmp.clarifiers': 'RIT / ΔTX', 'icmp.ritHint': 'Molette ou ± pour décaler · Ctrl+←/→ décale le RIT si actif', 'icmp.bandsAntenna': 'Bandes & Antenne', 'icmp.bandCurrent': 'Le poste est sur {b} m', 'icmp.antenna': 'Antenne', 'icmp.passband': 'Passe-bande / Notch', 'icmp.pbtCenter': 'Centrer PBT', 'icmp.manualNotch': 'Notch manuel — active MN, puis règle la position', 'icmp.squelch': 'Squelch', 'icmp.powerOnHint': 'Allumer la radio (démarre en ~15 s)', 'icmp.powerOffHint': 'Éteindre la radio', 'icmp.powerOffConfirm': 'Éteindre la radio ?',
  'rst.clickToFill': 'Clic pour remplir le RST tx depuis le signal',
  'qrz.openTitle': 'Ouvrir {call} sur QRZ.com',
@@ -1500,6 +1500,51 @@ export namespace extsvc {

 }

+export namespace kpa {
+	
+	export class Status {
+	    connected: boolean;
+	    transport: string;
+	    model?: string;
+	    last_error?: string;
+	    power_on: boolean;
+	    operate: boolean;
+	    fwd_w: number;
+	    swr: number;
+	    volt_v: number;
+	    cur_a: number;
+	    temp_c: number;
+	    band?: string;
+	    tuning: boolean;
+	    fault_code: number;
+	    fault_text?: string;
+	
+	    static createFrom(source: any = {}) {
+	        return new Status(source);
+	    }
+	
+	    constructor(source: any = {}) {
+	        if ('string' === typeof source) source = JSON.parse(source);
+	        this.connected = source["connected"];
+	        this.transport = source["transport"];
+	        this.model = source["model"];
+	        this.last_error = source["last_error"];
+	        this.power_on = source["power_on"];
+	        this.operate = source["operate"];
+	        this.fwd_w = source["fwd_w"];
+	        this.swr = source["swr"];
+	        this.volt_v = source["volt_v"];
+	        this.cur_a = source["cur_a"];
+	        this.temp_c = source["temp_c"];
+	        this.band = source["band"];
+	        this.tuning = source["tuning"];
+	        this.fault_code = source["fault_code"];
+	        this.fault_text = source["fault_text"];
+	    }
+	}
+
+}
+
 export namespace lookup {
 	
 	export class Result {
@@ -1701,6 +1746,7 @@ export namespace main {
 	    pgxl?: powergenius.Status;
 	    spe?: spe.Status;
 	    acom?: acom.Status;
+	    kpa?: kpa.Status;
 	
 	    static createFrom(source: any = {}) {
 	        return new AmpStatus(source);
@@ -1714,6 +1760,7 @@ export namespace main {
 	        this.pgxl = this.convertValues(source["pgxl"], powergenius.Status);
 	        this.spe = this.convertValues(source["spe"], spe.Status);
 	        this.acom = this.convertValues(source["acom"], acom.Status);
+	        this.kpa = this.convertValues(source["kpa"], kpa.Status);
 	    }
 	
 		convertValues(a: any, classs: any, asMap: boolean = false): any {
@@ -0,0 +1,60 @@
+// Package kpa talks to the Elecraft KPA500 and KPA1500 amplifiers.
+//
+// One package for both: they share the Elecraft command set — ASCII, a caret
+// prefix, a semicolon terminator, case-insensitive on the way in and upper case
+// on the way back — which is the same family as the K3/K4 panel in
+// internal/cat. What differs between the two models is the transport and which
+// commands exist, not the grammar.
+//
+// # Transports
+//
+// KPA500: serial only.
+//
+// KPA1500: serial, and a network server. Four things may be connected AT ONCE,
+// which is unusual enough to design around — the Host PC USB port, the XCVR
+// SERIAL connector when repurposed as a second host, ONE TCP client, and any
+// number of UDP clients:
+//
+//   - TCP on port 1500 (changed with ^CP). Single client. If the operator
+//     already has the Elecraft utility or another program on TCP, OpsLog will
+//     not get in, and the failure is a refused connection rather than anything
+//     the amplifier says.
+//   - UDP on the same port. Many clients, one command per packet and at most
+//     one response, and packets may be dropped under congestion — so it is the
+//     right choice for sharing the amplifier and the wrong one for a command
+//     that must not be missed.
+//
+// # Pacing
+//
+// There is NO flow control. The reference is explicit: pace commands by waiting
+// for the response to the previous one. So this client is strictly
+// question-and-answer on one connection, like the ACOM and SPE clients, rather
+// than firing a poll cycle and sorting out the replies afterwards.
+//
+// # Serial speed
+//
+// 4800 to 230400, 8N1, set on the amplifier (^BR / SERIAL SPEED HOST) and not
+// negotiated. Elecraft's own utility finds it by sending bare semicolons at
+// each speed until something answers — worth copying if operators turn up with
+// amplifiers whose speed they do not know.
+//
+// # What is settled, and how
+//
+// From the KPA1500 Programming Reference:
+//
+//   - ^SW is the SWR IN TENTHS. "123 is 12.3:1", so ^SW015 is 1.5:1. This was
+//     first taken from Hamlib's backend and is now confirmed by the document,
+//     which matters more than it sounds: a wrongly scaled SWR bar reports a
+//     good match on a bad antenna.
+//   - ^WS returns forward power AND SWR together, ^VI returns PA voltage AND
+//     current together. Two round trips instead of four on the link the display
+//     depends on while the operator is transmitting.
+//   - ^SF returns the fault log: index, fault code, a short name in quotes, a
+//     timestamp, and fault-specific values. ^FC describes the codes.
+//
+// # Not touched
+//
+// ^TX simulates a KEY IN — it makes the amplifier transmit from software — and
+// ^ON0 switches the main supplies off. Neither belongs on a poll loop or behind
+// a button that can be pressed by accident.
+package kpa
@@ -0,0 +1,412 @@
+package kpa
+
+// The client: one connection, strict question-and-answer, a cached status.
+//
+// Shaped like internal/acom and internal/spe so a third amplifier is the same
+// thing to read — but the traffic is the opposite kind. Those two are told to
+// stream and are then listened to; this one is asked, and answers. The
+// reference is explicit that there is no flow control and that commands are
+// paced by waiting for the previous reply, so nothing here ever has two
+// questions outstanding.
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"net"
+	"strings"
+	"sync"
+	"time"
+
+	"go.bug.st/serial"
+
+	"hamlog/internal/applog"
+)
+
+const (
+	dialTimeout = 5 * time.Second
+	ioTimeout   = 2 * time.Second
+	// pollInterval is the fast cycle: forward power, SWR, and whether a fault has
+	// appeared. Four times a second is enough for a bar that is read while
+	// talking, and it is four round trips a second on a link with no flow
+	// control — faster buys nothing and costs the set commands their latency.
+	pollInterval = 250 * time.Millisecond
+	// slowEvery is how many fast cycles pass between the readings that do not
+	// move: mode, band, temperature, supply. Once a second.
+	slowEvery = 4
+)
+
+// Status is what the panel polls.
+type Status struct {
+	Connected bool   `json:"connected"`
+	Transport string `json:"transport"` // "serial" | "tcp"
+	Model     string `json:"model,omitempty"`
+	LastError string `json:"last_error,omitempty"`
+
+	// PowerOn is the main supplies (^ON), Operate is OPERATE vs STANDBY (^OS).
+	// They are different questions: an amplifier can be switched on and in
+	// standby, which is the normal state between overs.
+	PowerOn bool `json:"power_on"`
+	Operate bool `json:"operate"`
+
+	FwdW  int     `json:"fwd_w"`
+	SWR   float64 `json:"swr"`
+	VoltV float64 `json:"volt_v"`
+	CurA  int     `json:"cur_a"`
+	TempC int     `json:"temp_c"`
+	Band  string  `json:"band,omitempty"`
+
+	// Tuning is the ATU mid-cycle (^TP), so a panel can say so rather than
+	// showing a wild SWR and a power reading nobody should act on.
+	Tuning bool `json:"tuning"`
+
+	// Fault is the current fault code and its meaning. A fault puts the
+	// amplifier in STANDBY by itself, so it is the first thing to show.
+	FaultCode int    `json:"fault_code"`
+	FaultText string `json:"fault_text,omitempty"`
+}
+
+// Config selects the model and how to reach it.
+type Config struct {
+	Model     string // "KPA500" | "KPA1500"
+	Transport string // "serial" | "tcp"
+	ComPort   string // serial
+	Baud      int    // serial: 4800…230400, set on the amplifier and not negotiated
+	Host      string // tcp (KPA1500 only)
+	Port      int    // tcp, default 1500
+}
+
+type Client struct {
+	cfg Config
+
+	mu   sync.Mutex // serialises the connection: one question at a time
+	conn io.ReadWriteCloser
+	rd   *bufio.Reader
+
+	statusMu sync.RWMutex
+	status   Status
+
+	stop    chan struct{}
+	running bool
+}
+
+// New builds a client. Nothing is opened until Start.
+func New(cfg Config) *Client {
+	if cfg.Baud <= 0 {
+		cfg.Baud = 38400
+	}
+	if cfg.Port <= 0 {
+		cfg.Port = 1500
+	}
+	if strings.TrimSpace(cfg.Model) == "" {
+		cfg.Model = "KPA1500"
+	}
+	c := &Client{cfg: cfg, stop: make(chan struct{})}
+	c.status.Transport = cfg.Transport
+	c.status.Model = strings.ToUpper(strings.TrimSpace(cfg.Model))
+	return c
+}
+
+func (c *Client) Start() error {
+	if c.running {
+		return nil
+	}
+	c.running = true
+	go c.pollLoop()
+	return nil
+}
+
+func (c *Client) Stop() {
+	if !c.running {
+		return
+	}
+	c.running = false
+	close(c.stop)
+	c.mu.Lock()
+	c.dropLocked()
+	c.mu.Unlock()
+}
+
+func (c *Client) GetStatus() Status {
+	c.statusMu.RLock()
+	defer c.statusMu.RUnlock()
+	return c.status
+}
+
+func (c *Client) setErr(msg string) {
+	c.statusMu.Lock()
+	was := c.status.LastError
+	c.status.Connected = false
+	c.status.LastError = msg
+	c.statusMu.Unlock()
+	// Logged on CHANGE only: a disconnected amplifier is polled four times a
+	// second, and the log is where a hardware problem is diagnosed hours later.
+	if msg != "" && msg != was {
+		applog.Printf("kpa: %s", msg)
+	}
+}
+
+// dropLocked closes the connection. Caller holds c.mu.
+func (c *Client) dropLocked() {
+	if c.conn != nil {
+		_ = c.conn.Close()
+		c.conn = nil
+		c.rd = nil
+	}
+}
+
+// connectLocked opens the transport. Caller holds c.mu.
+func (c *Client) connectLocked() error {
+	if c.conn != nil {
+		return nil
+	}
+	switch strings.ToLower(strings.TrimSpace(c.cfg.Transport)) {
+	case "tcp":
+		if strings.TrimSpace(c.cfg.Host) == "" {
+			return fmt.Errorf("no address configured for the amplifier")
+		}
+		addr := net.JoinHostPort(c.cfg.Host, fmt.Sprint(c.cfg.Port))
+		conn, err := net.DialTimeout("tcp", addr, dialTimeout)
+		if err != nil {
+			// Named for what it usually is. The KPA1500 accepts ONE TCP client,
+			// so the common failure is not a wrong address but the Elecraft
+			// utility already holding the socket — and "connection refused"
+			// sends an operator looking at their network instead.
+			return fmt.Errorf("cannot reach the amplifier on %s: %w (it accepts a single TCP connection — close the Elecraft utility or any other program using it)", addr, err)
+		}
+		c.conn = conn
+	default:
+		if strings.TrimSpace(c.cfg.ComPort) == "" {
+			return fmt.Errorf("no serial port configured for the amplifier")
+		}
+		p, err := serial.Open(c.cfg.ComPort, &serial.Mode{BaudRate: c.cfg.Baud})
+		if err != nil {
+			return fmt.Errorf("cannot open %s: %w", c.cfg.ComPort, err)
+		}
+		_ = p.SetReadTimeout(ioTimeout)
+		c.conn = p
+	}
+	c.rd = bufio.NewReader(c.conn)
+	applog.Printf("kpa: connected to the %s", c.status.Model)
+	return nil
+}
+
+// ask sends one command and reads its answer.
+//
+// The whole exchange is under the lock: with no flow control, two questions in
+// flight means two answers to sort out, and the only thing distinguishing them
+// is the prefix — which is exactly what payload() has to reject when it
+// happens.
+func (c *Client) ask(cmd string) (string, error) {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	if err := c.connectLocked(); err != nil {
+		return "", err
+	}
+	if tc, ok := c.conn.(net.Conn); ok {
+		_ = tc.SetDeadline(time.Now().Add(ioTimeout))
+	}
+	if _, err := c.conn.Write([]byte(cmd)); err != nil {
+		c.dropLocked()
+		return "", fmt.Errorf("writing %s: %w", cmd, err)
+	}
+	// Answers end with a semicolon and nothing else does, so the terminator is
+	// the frame.
+	line, err := c.rd.ReadString(';')
+	if err != nil {
+		c.dropLocked()
+		return "", fmt.Errorf("no answer to %s: %w", cmd, err)
+	}
+	return strings.TrimSpace(line), nil
+}
+
+// send is a SET: written, and not answered. The reference says SET commands do
+// not generally produce a response, so waiting for one would stall the poll
+// loop for a whole timeout every time the operator pressed a button.
+func (c *Client) send(cmd string) error {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	if err := c.connectLocked(); err != nil {
+		return err
+	}
+	if tc, ok := c.conn.(net.Conn); ok {
+		_ = tc.SetDeadline(time.Now().Add(ioTimeout))
+	}
+	if _, err := c.conn.Write([]byte(cmd)); err != nil {
+		c.dropLocked()
+		return fmt.Errorf("writing %s: %w", cmd, err)
+	}
+	applog.Printf("kpa: → %s", cmd)
+	return nil
+}
+
+// Operate puts the amplifier in OPERATE (true) or STANDBY (false).
+//
+// Worth knowing, and worth saying in the UI: from firmware 01.41 onwards,
+// going to OPERATE also CLEARS the current fault — every one except
+// temperature, which clears by cooling. So this button is the way out of a
+// fault as well as the way into transmit.
+func (c *Client) Operate(on bool) error {
+	if on {
+		return c.send("^OS1;")
+	}
+	return c.send("^OS0;")
+}
+
+// ClearFault clears the current fault without changing mode (^FLC).
+func (c *Client) ClearFault() error { return c.send("^FLC;") }
+
+// PowerOn switches the main supplies on or off (^ON1 / ^ON0).
+//
+// Off is a real power-down, not standby, and the way back on over the network
+// is Wake-on-LAN or the front panel — so a caller should be asking the operator
+// first. The sleeping microcontroller does answer ^ON while the supplies are
+// off, which is why "off" is a state this can report rather than a silence.
+func (c *Client) PowerOn(on bool) error {
+	if on {
+		return c.send("^ON1;")
+	}
+	return c.send("^ON0;")
+}
+
+// Tune starts an ATU tune cycle (^FT). It needs drive from the transceiver.
+func (c *Client) Tune() error { return c.send("^FT;") }
+
+// pollLoop keeps the status fresh, reconnecting as needed.
+func (c *Client) pollLoop() {
+	t := time.NewTicker(pollInterval)
+	defer t.Stop()
+	var n uint64
+	for {
+		select {
+		case <-c.stop:
+			return
+		case <-t.C:
+			c.pollOnce(n)
+			n++
+		}
+	}
+}
+
+func (c *Client) pollOnce(n uint64) {
+	// Forward power and SWR in ONE exchange (^WS), which is why that command
+	// exists and why the two are not asked separately.
+	reply, err := c.ask("^WS;")
+	if err != nil {
+		c.setErr(err.Error())
+		return
+	}
+	w, swr, err := parseWS(reply)
+	if err != nil {
+		c.setErr(err.Error())
+		return
+	}
+
+	c.statusMu.Lock()
+	c.status.Connected = true
+	c.status.LastError = ""
+	c.status.FwdW, c.status.SWR = w, swr
+	c.statusMu.Unlock()
+
+	// The fault, every cycle: it puts the amplifier in standby by itself, and an
+	// operator watching a power bar needs to know why it stopped moving.
+	if reply, err := c.ask("^FL;"); err == nil {
+		if code, err := parseFault(reply); err == nil {
+			c.statusMu.Lock()
+			was := c.status.FaultCode
+			c.status.FaultCode = code
+			c.status.FaultText = FaultName(code)
+			c.statusMu.Unlock()
+			if code != was && code != 0 {
+				applog.Printf("kpa: FAULT %02X — %s", code, FaultName(code))
+			}
+		}
+	}
+
+	if n%slowEvery != 0 {
+		return
+	}
+	// The readings that do not move fast. Each is optional: an older firmware or
+	// a KPA500 that does not know one of these must not take the rest down with
+	// it, so a failure here leaves the previous value standing.
+	if reply, err := c.ask("^OS;"); err == nil {
+		if v, err := parseInt(reply, "^OS"); err == nil {
+			c.statusMu.Lock()
+			c.status.Operate = v == 1
+			c.statusMu.Unlock()
+		}
+	}
+	if reply, err := c.ask("^ON;"); err == nil {
+		if v, err := parseInt(reply, "^ON"); err == nil {
+			c.statusMu.Lock()
+			c.status.PowerOn = v == 1
+			c.statusMu.Unlock()
+		}
+	}
+	if reply, err := c.ask("^VI;"); err == nil {
+		if v, a, err := parseVI(reply); err == nil {
+			c.statusMu.Lock()
+			c.status.VoltV, c.status.CurA = v, a
+			c.statusMu.Unlock()
+		}
+	}
+	if reply, err := c.ask("^TM;"); err == nil {
+		if v, err := parseInt(reply, "^TM"); err == nil {
+			c.statusMu.Lock()
+			c.status.TempC = v
+			c.statusMu.Unlock()
+		}
+	}
+	if reply, err := c.ask("^BN;"); err == nil {
+		if v, err := parseInt(reply, "^BN"); err == nil {
+			c.statusMu.Lock()
+			c.status.Band = BandName(v)
+			c.statusMu.Unlock()
+		}
+	}
+	if reply, err := c.ask("^TP;"); err == nil {
+		if v, err := parseInt(reply, "^TP"); err == nil {
+			c.statusMu.Lock()
+			c.status.Tuning = v == 1
+			c.statusMu.Unlock()
+		}
+	}
+}
+
+// SetBand puts the amplifier on a band by its ADIF name.
+//
+// The KPA takes its band from the transceiver on its own XCVR connector, but it
+// also accepts ^BN — so OpsLog can simply say it on the link it is already
+// using. That is worth knowing: an Acom has no such command, which is why
+// following it needs a second serial port and a transceiver emulator answering
+// its polls (internal/catemu). None of that applies here.
+//
+// Sent only when it CHANGES. Repeating the current band four times a second
+// would be traffic on a link with no flow control, in exchange for nothing.
+func (c *Client) SetBand(adifBand string) error {
+	n, ok := bandNumber(adifBand)
+	if !ok {
+		// Not an error the operator should see: the KPA covers 160-6 m, and
+		// tuning to 23 cm is not a fault, it is simply not this amplifier's
+		// business.
+		return nil
+	}
+	c.statusMu.Lock()
+	same := c.status.Band == adifBand
+	c.statusMu.Unlock()
+	if same {
+		return nil
+	}
+	return c.send(fmt.Sprintf("^BN%02d;", n))
+}
+
+// bandNumber is BandName backwards.
+func bandNumber(adifBand string) (int, bool) {
+	b := strings.ToLower(strings.TrimSpace(adifBand))
+	for n, name := range bandNames {
+		if name == b {
+			return n, true
+		}
+	}
+	return 0, false
+}
@@ -0,0 +1,157 @@
+package kpa
+
+// Decoding the amplifier's answers.
+//
+// Every format here is quoted from the KPA1500 Programming Reference, with the
+// document's own example kept in the test next door. That is the whole
+// discipline: a meter decoded from a guess reports a good match on a bad
+// antenna, and nobody finds out until something is damaged.
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// payload strips the leading "^", the command letters and the trailing ";",
+// leaving the value. Returns false when the answer is not for this command —
+// which happens on a shared serial line and on the first read after a
+// reconnect, where a stale reply is still in flight.
+func payload(reply, cmd string) (string, bool) {
+	r := strings.TrimSpace(reply)
+	r = strings.TrimSuffix(r, ";")
+	r = strings.TrimPrefix(r, "^")
+	cmd = strings.TrimSuffix(strings.TrimPrefix(cmd, "^"), ";")
+	if !strings.HasPrefix(strings.ToUpper(r), strings.ToUpper(cmd)) {
+		return "", false
+	}
+	return strings.TrimSpace(r[len(cmd):]), true
+}
+
+// parseWS reads forward power and SWR from one answer.
+//
+//	^WS1204 014;  →  1204 W, SWR 1.4
+//
+// The watts field is FOUR digits on a KPA1500 and THREE on a KPA500 — the
+// reference says so where it explains that ^WS exists for KPA500 compatibility
+// — so the split is on the space and not on a width. The SWR is in tenths, the
+// same units as everywhere else in this protocol.
+func parseWS(reply string) (watts int, swr float64, err error) {
+	v, ok := payload(reply, "^WS")
+	if !ok {
+		return 0, 0, fmt.Errorf("not a ^WS answer: %q", reply)
+	}
+	f := strings.Fields(v)
+	if len(f) != 2 {
+		return 0, 0, fmt.Errorf("^WS wants two fields, got %q", v)
+	}
+	w, err1 := strconv.Atoi(f[0])
+	s, err2 := strconv.Atoi(f[1])
+	if err1 != nil || err2 != nil {
+		return 0, 0, fmt.Errorf("^WS not numeric: %q", v)
+	}
+	return w, float64(s) / 10, nil
+}
+
+// parseVI reads the PA supply voltage and current.
+//
+//	^VI513 061;  →  51.3 V, 61 A
+//
+// Volts in TENTHS, amps whole. Two different scales in one answer, which is
+// exactly the kind of detail that is wrong when it is assumed.
+func parseVI(reply string) (volts float64, amps int, err error) {
+	v, ok := payload(reply, "^VI")
+	if !ok {
+		return 0, 0, fmt.Errorf("not a ^VI answer: %q", reply)
+	}
+	f := strings.Fields(v)
+	if len(f) != 2 {
+		return 0, 0, fmt.Errorf("^VI wants two fields, got %q", v)
+	}
+	dv, err1 := strconv.Atoi(f[0])
+	a, err2 := strconv.Atoi(f[1])
+	if err1 != nil || err2 != nil {
+		return 0, 0, fmt.Errorf("^VI not numeric: %q", v)
+	}
+	return float64(dv) / 10, a, nil
+}
+
+// parseInt reads the plain numeric answers: ^TMxxx (°C), ^PCnnn (A),
+// ^BNbb (band number), ^OSx, ^ONx, ^TPx.
+func parseInt(reply, cmd string) (int, error) {
+	v, ok := payload(reply, cmd)
+	if !ok {
+		return 0, fmt.Errorf("not a %s answer: %q", cmd, reply)
+	}
+	n, err := strconv.Atoi(strings.TrimSpace(v))
+	if err != nil {
+		return 0, fmt.Errorf("%s not numeric: %q", cmd, v)
+	}
+	return n, nil
+}
+
+// parseFault reads ^FLhh — TWO HEX DIGITS, not decimal. Fault 90 is reflected
+// power and fault 91 is "antenna not connected"; read as decimal they would be
+// 144 and 145 and match nothing in the table.
+func parseFault(reply string) (int, error) {
+	v, ok := payload(reply, "^FL")
+	if !ok {
+		return 0, fmt.Errorf("not a ^FL answer: %q", reply)
+	}
+	n, err := strconv.ParseInt(strings.TrimSpace(v), 16, 32)
+	if err != nil {
+		return 0, fmt.Errorf("^FL not hex: %q", v)
+	}
+	return int(n), nil
+}
+
+// faultNames is the table from the reference, keyed by the hex code.
+//
+// Said in the operator's terms rather than the amplifier's: "the antenna is not
+// connected" is a thing to go and fix, "fault 91" is a thing to go and look up.
+var faultNames = map[int]string{
+	0x00: "no fault",
+	0x10: "watchdog timer reset",
+	0x20: "PA current too high",
+	0x40: "too hot — clears as it cools",
+	0x60: "drive power too high",
+	0x61: "gain too low for the drive",
+	0x70: "frequency outside a ham band",
+	0x80: "50 V supply out of range",
+	0x81: "5 V supply out of range",
+	0x82: "10 V supply out of range",
+	0x83: "12 V supply out of range",
+	0x84: "-12 V supply out of range",
+	0x85: "no LPF board supply detected",
+	0x90: "reflected power too high",
+	0x91: "SWR very high — antenna not connected?",
+	0x92: "the ATU found no match",
+	0xB0: "dissipated power too high",
+	0xC0: "forward power too high",
+	0xC1: "forward power too high for this ATU setting",
+	0xF0: "gain too high for the drive",
+}
+
+// FaultName describes a fault code, or says the code itself when the firmware
+// reports one this table does not know — a newer amplifier must not be able to
+// produce a blank explanation.
+func FaultName(code int) string {
+	if code == 0 {
+		return ""
+	}
+	if s, ok := faultNames[code]; ok {
+		return s
+	}
+	return fmt.Sprintf("fault %02X", code)
+}
+
+// bandNames maps ^BN to the ADIF band. The numbering is the K3/K4 one, which is
+// why it is worth writing down: it is not frequency order beyond 6 m and there
+// is no arithmetic that produces it.
+var bandNames = map[int]string{
+	0: "160m", 1: "80m", 2: "60m", 3: "40m", 4: "30m", 5: "20m",
+	6: "17m", 7: "15m", 8: "12m", 9: "10m", 10: "6m",
+}
+
+// BandName is the ADIF band for a ^BN number, or "" when unknown.
+func BandName(n int) string { return bandNames[n] }
@@ -0,0 +1,104 @@
+package kpa
+
+import "testing"
+
+// The reference's own examples, kept as the test. Every one of these strings is
+// quoted from the KPA1500 Programming Reference rather than invented here, so a
+// change that breaks the decoding fails against the document.
+func TestParseTheDocumentedExamples(t *testing.T) {
+	t.Run("^WS — forward power and SWR", func(t *testing.T) {
+		w, swr, err := parseWS("^WS1204 014;")
+		if err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		if w != 1204 || swr != 1.4 {
+			t.Errorf("got %d W, SWR %.1f; want 1204 W, SWR 1.4", w, swr)
+		}
+	})
+
+	// A KPA500 sends three digits for the watts. The split is on the space, so
+	// the same code reads both amplifiers.
+	t.Run("^WS from a KPA500 — three digits", func(t *testing.T) {
+		w, swr, err := parseWS("^WS480 021;")
+		if err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		if w != 480 || swr != 2.1 {
+			t.Errorf("got %d W, SWR %.1f; want 480 W, SWR 2.1", w, swr)
+		}
+	})
+
+	t.Run("^VI — volts in tenths, amps whole", func(t *testing.T) {
+		v, a, err := parseVI("^VI513 061;")
+		if err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		if v != 51.3 || a != 61 {
+			t.Errorf("got %.1f V, %d A; want 51.3 V, 61 A", v, a)
+		}
+	})
+
+	t.Run("^TM — heat sink temperature", func(t *testing.T) {
+		c, err := parseInt("^TM045;", "^TM")
+		if err != nil || c != 45 {
+			t.Errorf("got %d, %v; want 45", c, err)
+		}
+	})
+
+	t.Run("^OS — operate or standby", func(t *testing.T) {
+		for reply, want := range map[string]int{"^OS0;": 0, "^OS1;": 1} {
+			got, err := parseInt(reply, "^OS")
+			if err != nil || got != want {
+				t.Errorf("%s → %d, %v; want %d", reply, got, err, want)
+			}
+		}
+	})
+
+	t.Run("^BN — the K3 band numbering", func(t *testing.T) {
+		n, err := parseInt("^BN05;", "^BN")
+		if err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		if got := BandName(n); got != "20m" {
+			t.Errorf("^BN05 → %q, want 20m", got)
+		}
+		if got := BandName(10); got != "6m" {
+			t.Errorf("^BN10 → %q, want 6m", got)
+		}
+	})
+}
+
+// ^FL is HEX. Read as decimal, 90 and 91 — reflected power and "antenna not
+// connected" — become 144 and 145 and match nothing at all, so the amplifier
+// would be shut down by a fault OpsLog could not name.
+func TestFaultCodesAreHex(t *testing.T) {
+	code, err := parseFault("^FL91;")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if code != 0x91 {
+		t.Fatalf("^FL91 → %d, want %d (0x91)", code, 0x91)
+	}
+	if name := FaultName(code); name == "" || name == "fault 91" {
+		t.Errorf("0x91 should be named, got %q", name)
+	}
+	if got := FaultName(0); got != "" {
+		t.Errorf("no fault should be empty, got %q", got)
+	}
+	// A code from a firmware newer than this table still says something.
+	if got := FaultName(0xAB); got != "fault AB" {
+		t.Errorf("unknown code → %q, want \"fault AB\"", got)
+	}
+}
+
+// Answers to somebody else's question are refused rather than misread. On a
+// serial line shared with the amplifier's own utility, or on the first read
+// after a reconnect, a stale reply is still in flight.
+func TestPayloadRefusesAnotherCommandsAnswer(t *testing.T) {
+	if _, _, err := parseWS("^VI513 061;"); err == nil {
+		t.Error("a ^VI answer was accepted as ^WS")
+	}
+	if _, err := parseInt("^TM045;", "^PC"); err == nil {
+		t.Error("a ^TM answer was accepted as ^PC")
+	}
+}