diff --git a/app.go b/app.go
index 8ade62d..c16018a 100644
--- a/app.go
+++ b/app.go
@@ -4237,6 +4237,18 @@ func (a *App) QSOAudioRestart() bool {
 	return a.qsoRec.Active()
 }
 
+// QSOAudioResetClock restarts the in-progress recording from zero, dropping
+// everything captured so far (pre-roll included). Lets the operator click the
+// REC timer to record only their own exchange when the station was already in a
+// long QSO before they entered the call. Returns whether a recording is active.
+func (a *App) QSOAudioResetClock() bool {
+	if a.qsoRec == nil {
+		return false
+	}
+	a.qsoRec.ResetQSOClock()
+	return a.qsoRec.Active()
+}
+
 // QSOAudioCancel drops the in-progress recording (callsign cleared, QSO
 // abandoned without logging).
 func (a *App) QSOAudioCancel() {
diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index fdc1383..6e792fa 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -32,7 +32,7 @@ import {
   GetDVKMessages, GetDVKStatus, DVKPlay, DVKStop,
   StartCWDecoder, StopCWDecoder, SetCWDecoderPitch,
   ChatAvailable, GetChatHistory, SendChatMessage, GetOnlineOperators,
-  QSOAudioBegin, QSOAudioCancel, QSOAudioRestart,
+  QSOAudioBegin, QSOAudioCancel, QSOAudioRestart, QSOAudioResetClock,
   GetAwardDefs,
   GetUIPref,
   ReportLiveActivity,
@@ -507,6 +507,12 @@ export default function App() {
     if (forCall !== undefined) recordingCallRef.current = forCall.trim().toUpperCase();
     QSOAudioRestart().then((active) => { setRecording(active); setRecTick((t) => t + 1); }).catch(() => {});
   };
+  // Reset the recording to zero (drop everything so far, pre-roll included) —
+  // bound to clicking the REC timer. Use when the station was already in a long
+  // QSO and you only want your own exchange in the file.
+  const resetRecordingClock = () => {
+    QSOAudioResetClock().then((active) => { setRecording(active); setRecTick((t) => t + 1); }).catch(() => {});
+  };
   const [saving, setSaving] = useState(false);
   const [filterCallsign, setFilterCallsign] = useState('');
   // Advanced filter builder (replaces the old band/mode dropdowns).
@@ -2247,10 +2253,16 @@ export default function App() {
       </Label>
       <div className="relative">
       {recording && RECORDABLE_MODES.has(mode.toUpperCase()) && (
-        <span className="absolute right-2 top-1/2 -translate-y-1/2 z-10 inline-flex items-center gap-1 text-[10px] font-semibold tabular-nums text-red-600 whitespace-nowrap pointer-events-none">
+        <button
+          type="button"
+          onMouseDown={(e) => e.preventDefault()}
+          onClick={resetRecordingClock}
+          title="Click to restart the recording from 0 — drops everything captured so far (incl. pre-roll) so the file holds only your exchange"
+          className="absolute right-2 top-1/2 -translate-y-1/2 z-10 inline-flex items-center gap-1 text-[10px] font-semibold tabular-nums text-red-600 whitespace-nowrap cursor-pointer rounded px-1 hover:bg-red-50"
+        >
           <span className="size-2 rounded-full bg-red-600 animate-pulse" />
           {String(Math.floor(recSeconds / 60)).padStart(2, '0')}:{String(recSeconds % 60).padStart(2, '0')}
-        </span>
+        </button>
       )}
       <Input
         ref={callsignRef}
diff --git a/frontend/wailsjs/go/main/App.d.ts b/frontend/wailsjs/go/main/App.d.ts
index 252866b..d653947 100644
--- a/frontend/wailsjs/go/main/App.d.ts
+++ b/frontend/wailsjs/go/main/App.d.ts
@@ -429,6 +429,8 @@ export function QSOAudioBegin():Promise<boolean>;
 
 export function QSOAudioCancel():Promise<void>;
 
+export function QSOAudioResetClock():Promise<boolean>;
+
 export function QSOAudioRestart():Promise<boolean>;
 
 export function QuitApp():Promise<void>;
diff --git a/frontend/wailsjs/go/main/App.js b/frontend/wailsjs/go/main/App.js
index 4b44987..48d451d 100644
--- a/frontend/wailsjs/go/main/App.js
+++ b/frontend/wailsjs/go/main/App.js
@@ -826,6 +826,10 @@ export function QSOAudioCancel() {
   return window['go']['main']['App']['QSOAudioCancel']();
 }
 
+export function QSOAudioResetClock() {
+  return window['go']['main']['App']['QSOAudioResetClock']();
+}
+
 export function QSOAudioRestart() {
   return window['go']['main']['App']['QSOAudioRestart']();
 }
diff --git a/internal/audio/recorder.go b/internal/audio/recorder.go
index 1bf384e..d3b700a 100644
--- a/internal/audio/recorder.go
+++ b/internal/audio/recorder.go
@@ -239,6 +239,22 @@ func (r *Recorder) RestartQSO() {
 	r.active = true
 }
 
+// ResetQSOClock restarts the active accumulation from ZERO — discarding
+// everything captured so far INCLUDING the pre-roll. Unlike RestartQSO (which
+// re-seeds from the pre-roll ring), this keeps nothing: the saved file will
+// contain only audio from this moment onward. Used when the contact you entered
+// was already in a long QSO and you want to record just your own exchange.
+// No-op if not running; if no take is active it begins one (empty).
+func (r *Recorder) ResetQSOClock() {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	if !r.running {
+		return
+	}
+	r.acc = nil
+	r.active = true
+}
+
 // TakeQSO snapshots the accumulated recording as raw 16 kHz mono PCM bytes and
 // stops accumulating — fast, no encoding. The next BeginQSO can safely start a
 // new take immediately. Pair with WritePCM to encode/write off the hot path so