feat: When a call is cleared from MSHV/WSJTx/JTDX it also clears the call field of OpsLog

app.go

@@ -8887,6 +8887,12 @@ func (a *App) consumeUDPEvents() {
 				"source":    ev.Source,
 				"adif":      ev.LoggedADIF,
 			})
+		case ev.ClearCall:
+			applog.Printf("udp: emit udp:clear_call (DX Call cleared in the digital app)\n")
+			wruntime.EventsEmit(a.ctx, "udp:clear_call", map[string]any{
+				"service": string(ev.Service),
+				"source":  ev.Source,
+			})
 		case ev.DXCall != "" && ev.Service == udp.ServiceRemoteCall:
 			applog.Printf("udp: emit udp:remote_call %q\n", ev.DXCall)
 			wruntime.EventsEmit(a.ctx, "udp:remote_call", ev.DXCall)

frontend/src/App.tsx

@@ -1787,6 +1787,12 @@ export default function App() {
     const unsubRC = EventsOn('udp:remote_call', (raw: string) => {
       if (applyUdpCall(raw, true)) restartRecordingForNewTarget(String(raw ?? '')); // explicit remote pick
     });
+    // The DX Call was cleared in WSJT-X / JTDX / MSHV → clear our entry to match.
+    // Only when something is actually in the entry, so an idle digital app doesn't
+    // wipe a call being typed by hand.
+    const unsubClear = EventsOn('udp:clear_call', () => {
+      if (callsignRef.current?.value?.trim() || callsign.trim()) resetEntry();
+    });
     // Clicked one of OpsLog's spots on the FlexRadio panadapter → fill the call
     // (the radio already tuned via trigger_action=Tune, and CAT reads the freq).
     // An explicit click always wins over whatever call is currently in the field.
@@ -1811,7 +1817,7 @@ export default function App() {
         else setError('UDP auto-log: ' + msg);
       }
     });
-    return () => { unsubDX?.(); unsubRC?.(); unsubFlexSpot?.(); unsubProg?.(); unsubLog?.(); };
+    return () => { unsubDX?.(); unsubRC?.(); unsubClear?.(); unsubFlexSpot?.(); unsubProg?.(); unsubLog?.(); };
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, []);
 

internal/integrations/udp/server.go

@@ -52,6 +52,11 @@ type Event struct {
 	DecodeFreqHz int64  // RF frequency (dial + audio offset)
 	DecodeSNR    int    // reported SNR (dB)
 	DecodeCQ     bool   // the decode was a CQ
+
+	// ClearCall is set when a WSJT/JTDX/MSHV Status message reports an EMPTY DX
+	// Call after previously reporting one — i.e. the operator cleared the call in
+	// the digital app. OpsLog clears its entry to match.
+	ClearCall bool
 }
 
 // Server is a single inbound UDP listener.
@@ -65,6 +70,7 @@ type Server struct {
 	mu      sync.Mutex
 
 	lastDialHz int64  // WSJT: dial freq from the last Status, added to Decode offsets
+	lastDX     string // WSJT: last non-empty DX Call seen, to detect a clear
 }
 
 func newServer(cfg Config, out chan<- Event) *Server {
@@ -213,6 +219,17 @@ func (s *Server) handle(pkt []byte, remote *net.UDPAddr) {
 		ev.Mode = w.Mode
 		ev.FreqHz = w.FreqHz
 		ev.LoggedADIF = w.LoggedADIF
+		// A Status with an empty DX Call, right after one that had a call, means the
+		// operator cleared it in WSJT-X / JTDX / MSHV. Fire ONE clear (tracked per
+		// server) — an idle app sends empty Status every second, and we must not
+		// re-clear (which would fight a manual entry) on each of those.
+		s.mu.Lock()
+		prev := s.lastDX
+		s.lastDX = w.DXCall
+		s.mu.Unlock()
+		if w.DXCall == "" && prev != "" {
+			ev.ClearCall = true
+		}
 	case ServiceADIF:
 		// JTAlert / GridTracker forward a text ADIF record after a QSO is
 		// logged. Guard against keep-alive / non-ADIF chatter on the socket:
@@ -268,8 +285,9 @@ func (s *Server) handle(pkt []byte, remote *net.UDPAddr) {
 	default:
 		return
 	}
-	// Empty events are useless; skip.
-	if ev.DXCall == "" && ev.LoggedADIF == "" && ev.DecodeCall == "" {
+	// Empty events are useless; skip — EXCEPT a clear signal, which is meant to be
+	// empty (the DX Call was cleared in the digital app).
+	if ev.DXCall == "" && ev.LoggedADIF == "" && ev.DecodeCall == "" && !ev.ClearCall {
 		return
 	}
 	select {