diff --git a/app/app.c b/app/app.c
index e57bb33..bc4ca37 100644
--- a/app/app.c
+++ b/app/app.c
@@ -1951,6 +1951,20 @@ void APP_time_slice_500ms(void)
 		return;
 	}
 
+	if (g_current_function == FUNCTION_TRANSMIT)
+	{
+		if (g_tx_timer_tick_500ms < 6)
+		{	// <= 3 seconds left
+			if (g_tx_timer_tick_500ms & 1u)
+				BK4819_start_tone(880, 10, true, true);
+			else
+				BK4819_stop_tones(true);
+		}
+
+		if (g_tx_timer_tick_500ms & 1u)
+			g_update_display = true;
+	}
+
 	if (g_update_screen_tick_500ms > 0)
 	{	// update display once every 500ms
 		if (--g_update_screen_tick_500ms == 0)
@@ -1994,20 +2008,6 @@ void APP_time_slice_500ms(void)
 		}
 	}
 
-	if (g_current_function == FUNCTION_TRANSMIT)
-	{
-		if (g_tx_timer_tick_500ms < 6)
-		{	// <= 3 seconds left
-			if (g_tx_timer_tick_500ms & 1u)
-				BK4819_start_tone(880, 10, true, false);
-			else
-				BK4819_stop_tones(true);
-		}
-
-		if (g_tx_timer_tick_500ms & 1u)
-			g_update_display = true;
-	}
-
 	if (g_menu_tick_10ms > 0)
 		if (--g_menu_tick_10ms == 0)
 			exit_menu = (g_current_display_screen == DISPLAY_MENU);	// exit menu mode
diff --git a/firmware.bin b/firmware.bin
index 1512bdf..ad73f23 100644
Binary files a/firmware.bin and b/firmware.bin differ
diff --git a/firmware.packed.bin b/firmware.packed.bin
index ad803e1..64b7cb5 100644
Binary files a/firmware.packed.bin and b/firmware.packed.bin differ
diff --git a/freq_ignore.c b/freq_ignore.c
index 4374020..3e82c78 100644
--- a/freq_ignore.c
+++ b/freq_ignore.c
@@ -12,6 +12,10 @@ int      ignore_frequencies_count = 0;
 void FI_clear_freq_ignored(void)
 {	// clear the ignore list
 	ignore_frequencies_count = 0;
+
+	#if defined(ENABLE_UART) && defined(ENABLE_UART_DEBUG)
+		UART_SendText("ignore cleared\r\n");
+	#endif
 }
 
 int FI_freq_ignored(const uint32_t frequency)
@@ -20,8 +24,8 @@ int FI_freq_ignored(const uint32_t frequency)
 	if (frequency == 0 || frequency == 0xffffffff || ignore_frequencies_count <= 0)
 		return -1;
 
-	if (ignore_frequencies_count > 4)
-	{	// binary search .. becomes much faster than sequencial as the list grows
+	if (ignore_frequencies_count >= 8)
+	{	// binary search .. becomes much faster than sequencial search when the list is bigger
 		int low = 0;
 		int high = ignore_frequencies_count;
 		while (low < high)
@@ -34,7 +38,12 @@ int FI_freq_ignored(const uint32_t frequency)
 			if (freq < frequency)
 				low = mid + 1;
 			else
+			{
+				#if defined(ENABLE_UART) && defined(ENABLE_UART_DEBUG)
+					UART_printf("ignored bin %u %u\r\n", frequency, mid);
+				#endif
 				return mid;
+			}
 		}
 	}
 	else
@@ -44,7 +53,12 @@ int FI_freq_ignored(const uint32_t frequency)
 		{
 			register uint32_t freq = ignore_frequencies[i];
 			if (frequency == freq)
-				return i;         // found it
+			{	// found it
+				#if defined(ENABLE_UART) && defined(ENABLE_UART_DEBUG)
+					UART_printf("ignored seq %u %u\r\n", frequency, i);
+				#endif
+				return i;
+			}
 			if (frequency < freq)
 				return -1;        // can exit loop early as the list is sorted by frequency
 		}
@@ -59,13 +73,16 @@ void FI_add_freq_ignored(const uint32_t frequency)
 	int i;
 
 	#if defined(ENABLE_UART) && defined(ENABLE_UART_DEBUG)
-		UART_printf("ignore %u\r\n", frequency);
+		UART_printf("ignore add %u\r\n", frequency);
 	#endif
 
+	if (frequency == 0 || frequency == 0xffffffff)
+		return;
+
 	if (ignore_frequencies_count >= (int)ARRAY_SIZE(ignore_frequencies))
 	{	// the list is full
 		#if defined(ENABLE_UART) && defined(ENABLE_UART_DEBUG)
-			UART_SendText("ignore full\r\n");
+			UART_SendText("ignore add full\r\n");
 		#endif
 		return;
 	}
@@ -77,7 +94,7 @@ void FI_add_freq_ignored(const uint32_t frequency)
 		if (frequency == freq)
 		{	// already in the list
 			#if defined(ENABLE_UART) && defined(ENABLE_UART_DEBUG)
-				UART_SendText("ignore already\r\n");
+				UART_SendText("ignore add already\r\n");
 			#endif
 			return;
 		}
@@ -88,13 +105,9 @@ void FI_add_freq_ignored(const uint32_t frequency)
 
 	// found the location to store the new frequency - the list is kept sorted by frequency
 
-	#if defined(ENABLE_UART) && defined(ENABLE_UART_DEBUG)
-		UART_SendText("ignore adding ..\r\n");
-	#endif
-
 	// make room for the new frequency
 	if (i < ignore_frequencies_count)
-		memmove(&ignore_frequencies[i + 1], &ignore_frequencies[i], sizeof(ignore_frequencies[0]) * (ignore_frequencies_count - i - 1));
+		memmove(&ignore_frequencies[i + 1], &ignore_frequencies[i], sizeof(ignore_frequencies[0]) * (ignore_frequencies_count - i));
 
 	// add the frequency to the list
 	ignore_frequencies[i] = frequency;
@@ -109,17 +122,23 @@ void FI_add_freq_ignored(const uint32_t frequency)
 void FI_sub_freq_ignored(const uint32_t frequency)
 {	// remove a frequency from the ignore list
 
-	int index = FI_freq_ignored(frequency);
-	if (index >= 0)
-	{
-		if (index < (ignore_frequencies_count - 1))
-			memmove(&ignore_frequencies[index], &ignore_frequencies[index + 1], sizeof(ignore_frequencies[0]) * (ignore_frequencies_count - 1));
-		ignore_frequencies_count--;
+	#if defined(ENABLE_UART) && defined(ENABLE_UART_DEBUG)
+		UART_printf("ignore sub %u\r\n", frequency);
+	#endif
 
-		#if defined(ENABLE_UART) && defined(ENABLE_UART_DEBUG)
-			UART_SendText("ignore freq ..\r\n");
-			for (index = 0; index < ignore_frequencies_count; index++)
-				UART_printf("%2u %10u\r\n", index, ignore_frequencies[index]);
-		#endif
-	}
+	if (frequency == 0 || frequency == 0xffffffff)
+		return;
+
+	int index = FI_freq_ignored(frequency);
+	if (index < 0)
+		return;
+
+	if (index < (ignore_frequencies_count - 1))
+		memmove(&ignore_frequencies[index], &ignore_frequencies[index + 1], sizeof(ignore_frequencies[0]) * (ignore_frequencies_count - 1));
+	ignore_frequencies_count--;
+
+	#if defined(ENABLE_UART) && defined(ENABLE_UART_DEBUG)
+		for (index = 0; index < ignore_frequencies_count; index++)
+			UART_printf("%2u %10u\r\n", index, ignore_frequencies[index]);
+	#endif
 }