diff --git a/app/menu.c b/app/menu.c
index 6139add..ec5b4c3 100644
--- a/app/menu.c
+++ b/app/menu.c
@@ -589,6 +589,10 @@ void MENU_AcceptSetting(void)
 			gDTMF_RecvTimeoutSaved = 0;
 			gDTMF_ReceivedSaved[0] = '\0';
 			gSetting_live_DTMF_decoder = gSubMenuSelection;
+			if (!gSetting_live_DTMF_decoder)
+				BK4819_DisableDTMF();
+			gFlagReconfigureVfos     = true;
+			gUpdateStatus            = true;
 			break;
 
 		case MENU_D_LIST:
diff --git a/firmware.bin b/firmware.bin
index a6f6514..3a86f72 100644
Binary files a/firmware.bin and b/firmware.bin differ
diff --git a/firmware.packed.bin b/firmware.packed.bin
index 13e2b16..eb59e29 100644
Binary files a/firmware.packed.bin and b/firmware.packed.bin differ
diff --git a/functions.c b/functions.c
index a7b4572..c9e18f1 100644
--- a/functions.c
+++ b/functions.c
@@ -185,6 +185,9 @@ void FUNCTION_Select(FUNCTION_Type_t Function)
 					break;
 				}
 			#endif
+
+			// if the DTMF decoder is enabled, it destroys the TX audio !! .. 1of11
+			BK4819_DisableDTMF();
 			
 			if (gCurrentVfo->SCRAMBLING_TYPE > 0 && gSetting_ScrambleEnable)
 				BK4819_EnableScramble(gCurrentVfo->SCRAMBLING_TYPE - 1);
diff --git a/radio.c b/radio.c
index 8c3a71a..b18bf91 100644
--- a/radio.c
+++ b/radio.c
@@ -762,10 +762,15 @@ void RADIO_SetupRegisters(bool bSwitchToFunction0)
 			InterruptMask |= BK4819_REG_3F_DTMF_5TONE_FOUND;
 		}
 	#else
+		if (gCurrentFunction != FUNCTION_TRANSMIT && gSetting_live_DTMF_decoder)
 		{
 			BK4819_EnableDTMF();
 			InterruptMask |= BK4819_REG_3F_DTMF_5TONE_FOUND;
 		}
+		else
+		{
+			BK4819_DisableDTMF();
+		}
 	#endif
 
 	// enable/disable BK4819 selected interrupts