diff --git a/app/app.c b/app/app.c
index c691ab1..90600e7 100644
--- a/app/app.c
+++ b/app/app.c
@@ -574,9 +574,9 @@ void APP_StartListening(FUNCTION_Type_t Function, const bool reset_am_fix)
 		(gEeprom.DAC_GAIN    << 0));     // AF DAC Gain (after Gain-1 and Gain-2)
 
 	#ifdef ENABLE_VOICE
-//		if (gVoiceWriteIndex == 0)
+		if (gVoiceWriteIndex == 0)       // AM/FM RX mode will be set when the voice has finished
 	#endif
-			BK4819_SetAF(gRxVfo->AM_mode ? BK4819_AF_AM : BK4819_AF_OPEN);
+			BK4819_SetAF(gRxVfo->AM_mode ? BK4819_AF_AM : BK4819_AF_OPEN);  // no need, set it now
 
 	FUNCTION_Select(Function);
 
@@ -1023,7 +1023,7 @@ void APP_Update(void)
 		}
 	#endif
 
-	if ((gCurrentFunction == FUNCTION_TRANSMIT && gTxTimeoutReached) || gSerialConfigCountDown_500ms > 0)
+	if (gCurrentFunction == FUNCTION_TRANSMIT && (gTxTimeoutReached || gSerialConfigCountDown_500ms > 0))
 	{	// transmitter timed out or must de-key
 		gTxTimeoutReached = false;
 
@@ -1390,7 +1390,8 @@ void APP_TimeSlice10ms(void)
 	#endif
 
 	#ifdef ENABLE_AM_FIX
-		if (gEeprom.VfoInfo[gEeprom.RX_CHANNEL].AM_mode && gSetting_AM_fix)
+//		if (gEeprom.VfoInfo[gEeprom.RX_CHANNEL].AM_mode && gSetting_AM_fix)
+		if (gRxVfo->AM_mode && gSetting_AM_fix)
 			AM_fix_10ms(gEeprom.RX_CHANNEL);
 	#endif
 
diff --git a/audio.c b/audio.c
index eff3393..6f19c65 100644
--- a/audio.c
+++ b/audio.c
@@ -258,7 +258,9 @@ void AUDIO_PlayBeep(BEEP_Type_t Beep)
 				VoiceID += VOICE_ID_ENG_BASE;
 			}
 	
-			if (gCurrentFunction == FUNCTION_RECEIVE || gCurrentFunction == FUNCTION_MONITOR)
+			if (gCurrentFunction == FUNCTION_RECEIVE ||
+			    gCurrentFunction == FUNCTION_MONITOR ||
+			    gCurrentFunction == FUNCTION_INCOMING)   // 1of11
 				BK4819_SetAF(BK4819_AF_MUTE);
 	
 			#ifdef ENABLE_FMRADIO
@@ -278,7 +280,9 @@ void AUDIO_PlayBeep(BEEP_Type_t Beep)
 			{
 				SYSTEM_DelayMs(Delay * 10);
 	
-				if (gCurrentFunction == FUNCTION_RECEIVE || gCurrentFunction == FUNCTION_MONITOR)
+				if (gCurrentFunction == FUNCTION_RECEIVE ||
+				    gCurrentFunction == FUNCTION_MONITOR ||
+					gCurrentFunction == FUNCTION_INCOMING)	// 1of11
 					BK4819_SetAF(gRxVfo->AM_mode ? BK4819_AF_AM : BK4819_AF_OPEN);
 	
 				#ifdef ENABLE_FMRADIO
@@ -410,7 +414,9 @@ void AUDIO_PlayBeep(BEEP_Type_t Beep)
 			}
 		}
 	
-		if (gCurrentFunction == FUNCTION_RECEIVE || gCurrentFunction == FUNCTION_MONITOR)
+		if (gCurrentFunction == FUNCTION_RECEIVE ||
+		    gCurrentFunction == FUNCTION_MONITOR ||
+		    gCurrentFunction == FUNCTION_INCOMING)    // 1of11
 			BK4819_SetAF(gRxVfo->AM_mode ? BK4819_AF_AM : BK4819_AF_OPEN);
 	
 		#ifdef ENABLE_FMRADIO
diff --git a/driver/bk4819.c b/driver/bk4819.c
index 551de68..255a83b 100644
--- a/driver/bk4819.c
+++ b/driver/bk4819.c
@@ -854,13 +854,14 @@ void BK4819_SetCompander(const unsigned int mode)
 	//
 	// REG_29   <6:0> 64 Compress (AF Tx) noise point (dB)
 	//
-//	const uint16_t compress_ratio    = (mode == 1 || mode >= 3) ? 2 : 0;  // 2:1
-//	const uint16_t compress_0dB      = 86;
-//	const uint16_t compress_noise_dB = 64;
-//	BK4819_WriteRegister(BK4819_REG_29, // (BK4819_ReadRegister(BK4819_REG_29) & ~(3u < 14)) | (compress_ratio < 14));
-//		  (compress_ratio    < 14)
-//		| (compress_0dB      <  7)
-//		| (compress_noise_dB <  0));
+	const uint16_t compress_ratio    = (mode == 1 || mode >= 3) ? 2 : 0;  // 2:1
+	const uint16_t compress_0dB      = 86;
+	const uint16_t compress_noise_dB = 64;
+//	AB40  10 1010110 1000000
+	BK4819_WriteRegister(BK4819_REG_29, // (BK4819_ReadRegister(BK4819_REG_29) & ~(3u < 14)) | (compress_ratio < 14));
+		  (compress_ratio    < 14)
+		| (compress_0dB      <  7)
+		| (compress_noise_dB <  0));
  
 	// set the expander ratio
 	//
@@ -874,13 +875,14 @@ void BK4819_SetCompander(const unsigned int mode)
 	//
 	// REG_28   <6:0> 56 Expander (AF Rx) noise point (dB)
 	//
-//	const uint16_t expand_ratio    = (mode >= 2) ? 1 : 0;   // 1:2
-//	const uint16_t expand_0dB      = 86;
-//	const uint16_t expand_noise_dB = 56;
-//	BK4819_WriteRegister(BK4819_REG_28, // (BK4819_ReadRegister(BK4819_REG_28) & ~(3u < 14)) | (expand_ratio < 14));
-//		  (expand_ratio    < 14)
-//		| (expand_0dB      <  7)
-//		| (expand_noise_dB <  0));
+	const uint16_t expand_ratio    = (mode >= 2) ? 1 : 0;   // 1:2
+	const uint16_t expand_0dB      = 86;
+	const uint16_t expand_noise_dB = 56;
+//	6B38  01 1010110 0111000
+	BK4819_WriteRegister(BK4819_REG_28, // (BK4819_ReadRegister(BK4819_REG_28) & ~(3u < 14)) | (expand_ratio < 14));
+		  (expand_ratio    < 14)
+		| (expand_0dB      <  7)
+		| (expand_noise_dB <  0));
 }
 
 void BK4819_DisableVox(void)
diff --git a/firmware.bin b/firmware.bin
index 01a16ca..76de68c 100644
Binary files a/firmware.bin and b/firmware.bin differ
diff --git a/firmware.packed.bin b/firmware.packed.bin
index 1541aad..5b41567 100644
Binary files a/firmware.packed.bin and b/firmware.packed.bin differ
diff --git a/utils/misc.exe b/utils/misc.exe
index e43b070..ba79991 100644
Binary files a/utils/misc.exe and b/utils/misc.exe differ