diff --git a/driver/bk4819.c b/driver/bk4819.c
index d323db2..add3fe4 100644
--- a/driver/bk4819.c
+++ b/driver/bk4819.c
@@ -1759,7 +1759,8 @@ void BK4819_PrepareFSKReceive(void)
 #endif
 
     BK4819_EnterTxMute();
-    BK4819_SetAF(BK4819_AF_MUTE);
+    AUDIO_AudioPathOn();
+    BK4819_SetAF(BK4819_AF_BEEP);
 
     BK4819_WriteRegister(BK4819_REG_70, BK4819_REG_70_ENABLE_TONE1 | (66u << BK4819_REG_70_SHIFT_TONE1_TUNING_GAIN));
 
@@ -2172,7 +2173,7 @@ void BK4819_enable_mdc1200_rx(const bool enable)
 //			BK4819_REG_30_ENABLE_RX_DSP    |
 		0);
 
-		#if 1
+		#if 0
 			GPIO_ClearBit(&GPIOC->DATA, 4);
 			BK4819_SetAF(BK4819_AF_MUTE);
 		#else