diff --git a/README.md b/README.md
index e92ed79..645be78 100644
--- a/README.md
+++ b/README.md
@@ -57,7 +57,7 @@ ENABLE_MUTE_RADIO_FOR_VOICE      := 1       1 = mute the radios audio when a voi
 ENABLE_VOX                       := 0       1 = voice operated transmission
 ENABLE_VOX_MORE_SENSITIVE        := 1       1 = make VOX more sensitive
 ENABLE_ALARM                     := 0       1 = enable TX alarm
-ENABLE_TX_TONE_HZ                := 1750        side key tx tone frequency  0 = disable  >0 = frequency of tone
+ENABLE_TX_TONE_HZ                := 1750        side key and tone burst tx frequency  0 = disable  >0 = frequency of audio tone
 ENABLE_MDC1200                   := 0       1 = enable MDC1200 TX/RX + menu TX option
 ENABLE_MDC1200_SHOW_OP_ARG       := 1       1 = show RX opcode and argument values when MDC1200 is RX'ed
 ENABLE_MDC1200_SIDE_BEEP         := 1       1 = enable short side tone/beep when MDC1200 is sent - so user knows when they can start taking after PTT pressed
diff --git a/app/dtmf.c b/app/dtmf.c
index 83957f8..5303105 100644
--- a/app/dtmf.c
+++ b/app/dtmf.c
@@ -450,11 +450,11 @@ bool DTMF_Reply(void)
 		default:
 			if (
 				#ifdef ENABLE_DTMF_CALLING
-					g_dtmf_call_state != DTMF_CALL_STATE_NONE               ||
+					g_dtmf_call_state != DTMF_CALL_STATE_NONE                   ||
 				#endif
-				g_current_vfo->channel.dtmf_ptt_id_tx_mode == PTT_ID_APOLLO ||
-				g_current_vfo->channel.dtmf_ptt_id_tx_mode == PTT_ID_1750   ||
-				g_current_vfo->channel.dtmf_ptt_id_tx_mode == PTT_ID_OFF    ||
+				g_current_vfo->channel.dtmf_ptt_id_tx_mode == PTT_ID_APOLLO     ||
+				g_current_vfo->channel.dtmf_ptt_id_tx_mode == PTT_ID_TONE_BURST ||
+				g_current_vfo->channel.dtmf_ptt_id_tx_mode == PTT_ID_OFF        ||
 				g_current_vfo->channel.dtmf_ptt_id_tx_mode == PTT_ID_EOT)
 			{
 				g_dtmf_reply_state = DTMF_REPLY_NONE;
diff --git a/app/menu.c b/app/menu.c
index 5414715..70be56e 100644
--- a/app/menu.c
+++ b/app/menu.c
@@ -811,7 +811,7 @@ void MENU_AcceptSetting(void)
 			if (g_tx_vfo->channel.dtmf_ptt_id_tx_mode == PTT_ID_EOT    ||
 			    g_tx_vfo->channel.dtmf_ptt_id_tx_mode == PTT_ID_BOTH   ||
 			    g_tx_vfo->channel.dtmf_ptt_id_tx_mode == PTT_ID_APOLLO ||
-			    g_tx_vfo->channel.dtmf_ptt_id_tx_mode == PTT_ID_1750)
+			    g_tx_vfo->channel.dtmf_ptt_id_tx_mode == PTT_ID_TONE_BURST)
 			{
 				g_eeprom.config.setting.roger_mode = ROGER_MODE_OFF;
 				break;
diff --git a/firmware.bin b/firmware.bin
index b394193..5a615b4 100644
Binary files a/firmware.bin and b/firmware.bin differ
diff --git a/firmware.packed.bin b/firmware.packed.bin
index 3edc40f..ea6722f 100644
Binary files a/firmware.packed.bin and b/firmware.packed.bin differ
diff --git a/functions.c b/functions.c
index 64ab2fd..54daaa8 100644
--- a/functions.c
+++ b/functions.c
@@ -295,9 +295,13 @@ void FUNCTION_Select(function_type_t Function)
 					}
 					else
 				#endif
-					if (g_current_vfo->channel.dtmf_ptt_id_tx_mode == PTT_ID_1750)
+					if (g_current_vfo->channel.dtmf_ptt_id_tx_mode == PTT_ID_TONE_BURST)
 					{
-						BK4819_start_tone(1750, 28, true, false);
+						#if (ENABLE_TX_TONE_HZ > 0)
+							BK4819_start_tone(ENABLE_TX_TONE_HZ, 28, true, false);
+						#else
+							BK4819_start_tone(1750, 28, true, false);
+						#endif
 						SYSTEM_DelayMs(TONE_1750_MS);
 						BK4819_stop_tones(true);
 					}
diff --git a/settings.h b/settings.h
index bb90383..ba7e26e 100644
--- a/settings.h
+++ b/settings.h
@@ -161,7 +161,7 @@ enum ptt_id_e {
 	PTT_ID_EOT,        // END OF TX
 	PTT_ID_BOTH,       // BOTH
 	PTT_ID_APOLLO,     // Apolo quindar tones
-	PTT_ID_1750,       // 1750Hz tone burst
+	PTT_ID_TONE_BURST  // tone burst
 };
 typedef enum ptt_id_e ptt_id_t;
 
diff --git a/ui/menu.c b/ui/menu.c
index 6cf0b23..b0feaf4 100644
--- a/ui/menu.c
+++ b/ui/menu.c
@@ -312,14 +312,14 @@ const char g_sub_menu_mem_disp[4][12] =
 	};
 #endif
 
-const char g_sub_menu_ptt_id[6][18] =
+const char g_sub_menu_ptt_id[6][17] =
 {
 	"DTMF ID\nOFF",
 	"DTMF ID\nBOT",
 	"DTMF ID\nEOT",
 	"DTMF ID\nBOT+EOT",
 	"APOLLO\nQUINDAR",
-	"TONE BURST\n1750Hz"
+	"TONE BURST\n"
 };
 
 #ifdef ENABLE_MDC1200
@@ -1068,6 +1068,15 @@ void UI_DisplayMenu(void)
 
 		case MENU_PTT_ID:
 			strcpy(str, g_sub_menu_ptt_id[g_sub_menu_selection]);
+			if (g_sub_menu_selection == PTT_ID_TONE_BURST)
+			{
+				#if (ENABLE_TX_TONE_HZ > 0)
+					sprintf(str + strlen(str), "%uHz", (uint16_t)ENABLE_TX_TONE_HZ);
+				#else
+					strcat("1750Hz");
+				#endif
+			}
+
 			channel_setting = true;
 			break;
 
diff --git a/ui/menu.h b/ui/menu.h
index 13cb517..27cf5fa 100644
--- a/ui/menu.h
+++ b/ui/menu.h
@@ -207,7 +207,7 @@ extern const char         g_sub_menu_mem_disp[4][12];
 #ifdef ENABLE_DTMF_CALLING
 	extern const char     g_sub_menu_dtmf_rsp[4][9];
 #endif
-extern const char         g_sub_menu_ptt_id[6][18];
+extern const char         g_sub_menu_ptt_id[6][17];
 #ifdef ENABLE_MDC1200
 	extern const char     g_sub_menu_mdc1200_mode[4][5];
 #endif