up

internal/cat/omnirig.go

@@ -337,9 +337,14 @@ func (o *OmniRig) SetPTT(on bool) error {
 	}
 	debugLog.Printf("OmniRig.SetPTT(%v): status=%d(%s) writeableParams=0x%X PM_TX-writeable=%v → Tx=%s",
 		on, status, statusStr, writeable, txWriteable, name)
-	if on && !txWriteable {
-		debugLog.Printf("OmniRig.SetPTT: ⚠ this rig's OmniRig .ini does NOT expose TX keying (PM_TX not writeable). " +
-			"Use VOX or serial RTS/DTR PTT instead.")
+	// When OmniRig DID report its writeable params (writeable != -1) and PM_TX
+	// is NOT among them, writing Tx is a silent no-op: the rig never keys and
+	// SetPTT would otherwise return success, leaving the user puzzled ("Test PTT
+	// does nothing"). Surface a clear, actionable error instead. If we couldn't
+	// read the writeable params (-1), fall through and try anyway (best effort).
+	if on && writeable != -1 && writeable&pmTX == 0 {
+		debugLog.Printf("OmniRig.SetPTT: ⚠ PM_TX not writeable for this rig profile (writeableParams=0x%X)", writeable)
+		return fmt.Errorf("this rig's OmniRig profile doesn't expose CAT TX keying (PM_TX not writeable) — use RTS/DTR or VOX for PTT")
 	}
 	// OmniRig has NO SetTx method (that returns "unknown name"); the Tx
 	// parameter is set via the writeable Tx PROPERTY (PM_TX / PM_RX).