diff --git a/app/dtmf.c b/app/dtmf.c
index 78b137e..83957f8 100644
--- a/app/dtmf.c
+++ b/app/dtmf.c
@@ -453,6 +453,7 @@ bool DTMF_Reply(void)
 					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_EOT)
 			{
diff --git a/app/menu.c b/app/menu.c
index 21799eb..5414715 100644
--- a/app/menu.c
+++ b/app/menu.c
@@ -808,9 +808,10 @@ void MENU_AcceptSetting(void)
 
 		case MENU_PTT_ID:
 			g_tx_vfo->channel.dtmf_ptt_id_tx_mode = g_sub_menu_selection;
-			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)
+			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_eeprom.config.setting.roger_mode = ROGER_MODE_OFF;
 				break;
diff --git a/firmware.bin b/firmware.bin
index a9c5576..b394193 100644
Binary files a/firmware.bin and b/firmware.bin differ
diff --git a/firmware.packed.bin b/firmware.packed.bin
index 9e7cacf..3edc40f 100644
Binary files a/firmware.packed.bin and b/firmware.packed.bin differ
diff --git a/functions.c b/functions.c
index 1447673..64ab2fd 100644
--- a/functions.c
+++ b/functions.c
@@ -295,6 +295,13 @@ void FUNCTION_Select(function_type_t Function)
 					}
 					else
 				#endif
+					if (g_current_vfo->channel.dtmf_ptt_id_tx_mode == PTT_ID_1750)
+					{
+						BK4819_start_tone(1750, 28, true, false);
+						SYSTEM_DelayMs(TONE_1750_MS);
+						BK4819_stop_tones(true);
+					}
+					else
 					if (g_current_vfo->channel.dtmf_ptt_id_tx_mode == PTT_ID_APOLLO)
 					{
 						BK4819_start_tone(APOLLO_TONE1_HZ, 28, true, false);
diff --git a/misc.h b/misc.h
index 34407cd..8a2d4fd 100644
--- a/misc.h
+++ b/misc.h
@@ -57,6 +57,8 @@
 #define APOLLO_TONE1_HZ        2525
 #define APOLLO_TONE2_HZ        2475
 
+#define TONE_1750_MS           500
+
 enum {
 	USER_CHANNEL_FIRST = 0,
 	USER_CHANNEL_LAST  = 199u,
diff --git a/settings.h b/settings.h
index 6b68165..bb90383 100644
--- a/settings.h
+++ b/settings.h
@@ -160,7 +160,8 @@ enum ptt_id_e {
 	PTT_ID_BOT,        // BEGIN OF TX
 	PTT_ID_EOT,        // END OF TX
 	PTT_ID_BOTH,       // BOTH
-	PTT_ID_APOLLO      // Apolo quindar tones
+	PTT_ID_APOLLO,     // Apolo quindar tones
+	PTT_ID_1750,       // 1750Hz tone burst
 };
 typedef enum ptt_id_e ptt_id_t;
 
diff --git a/ui/menu.c b/ui/menu.c
index daf4eb6..6cf0b23 100644
--- a/ui/menu.c
+++ b/ui/menu.c
@@ -312,13 +312,14 @@ const char g_sub_menu_mem_disp[4][12] =
 	};
 #endif
 
-const char g_sub_menu_ptt_id[5][16] =
+const char g_sub_menu_ptt_id[6][18] =
 {
 	"DTMF ID\nOFF",
 	"DTMF ID\nBOT",
 	"DTMF ID\nEOT",
 	"DTMF ID\nBOT+EOT",
-	"APOLLO\nQUINDAR"
+	"APOLLO\nQUINDAR",
+	"TONE BURST\n1750Hz"
 };
 
 #ifdef ENABLE_MDC1200
diff --git a/ui/menu.h b/ui/menu.h
index 50f52d1..13cb517 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[5][16];
+extern const char         g_sub_menu_ptt_id[6][18];
 #ifdef ENABLE_MDC1200
 	extern const char     g_sub_menu_mdc1200_mode[4][5];
 #endif