diff --git a/Makefile b/Makefile
index 2b97c03..792fb93 100644
--- a/Makefile
+++ b/Makefile
@@ -22,7 +22,7 @@ ENABLE_CTCSS_TAIL_PHASE_SHIFT := 1
 ENABLE_MAIN_KEY_HOLD          := 1
 ENABLE_BOOT_BEEPS             := 0
 ENABLE_COMPANDER              := 1
-ENABLE_SHOW_CHARGE_LEVEL      := 1
+ENABLE_SHOW_CHARGE_LEVEL      := 0
 ENABLE_REVERSE_BAT_SYMBOL     := 1
 ENABLE_CODE_SCAN_TIMEOUT      := 0
 ENABLE_AM_FIX                 := 1
diff --git a/app/app.c b/app/app.c
index 36a3cc1..88268aa 100644
--- a/app/app.c
+++ b/app/app.c
@@ -641,9 +641,11 @@ static void FREQ_NextChannel(void)
 	RADIO_ConfigureSquelchAndOutputPower(gRxVfo);
 	RADIO_SetupRegisters(true);
 
-	gUpdateDisplay        = true;
-	ScanPauseDelayIn_10ms = scan_pause_delay_in_6_10ms;
-	bScanKeepFrequency    = false;
+//	ScanPauseDelayIn_10ms = scan_pause_delay_in_6_10ms;
+	ScanPauseDelayIn_10ms = 10;  // 100ms
+
+	bScanKeepFrequency = false;
+	gUpdateDisplay     = true;
 }
 
 static void MR_NextChannel(void)
@@ -723,7 +725,7 @@ static void MR_NextChannel(void)
 	}
 
 //	ScanPauseDelayIn_10ms = scan_pause_delay_in_3_10ms;
-	ScanPauseDelayIn_10ms = 8;  // 100ms .. <= ~60ms it misses signals (squelch response and/or PLL lock time) ?
+	ScanPauseDelayIn_10ms = 8;  // 80ms .. <= ~60ms it misses signals (squelch response and/or PLL lock time) ?
 
 	bScanKeepFrequency = false;
 
@@ -1780,11 +1782,18 @@ void APP_TimeSlice500ms(void)
 			BATTERY_GetReadings(true);
 		}
 
-		// regular statusbar updates (once every 2 sec) if need be
+		// regular display updates (once every 2 sec) - if need be
 		if ((gBatteryCheckCounter & 3) == 0)
+		{
 			if (gChargingWithTypeC || gSetting_battery_text > 0)
 				gUpdateStatus = true;
 
+			#ifdef ENABLE_SHOW_CHARGE_LEVEL
+				if (gChargingWithTypeC)
+					gUpdateDisplay = true;
+			#endif
+		}
+		
 		if (gCurrentFunction != FUNCTION_POWER_SAVE)
 			updateRSSI(gEeprom.RX_CHANNEL);
 
diff --git a/app/dtmf.c b/app/dtmf.c
index cff402d..0a79dc1 100644
--- a/app/dtmf.c
+++ b/app/dtmf.c
@@ -159,7 +159,7 @@ DTMF_CallMode_t DTMF_CheckGroupCall(const char *pMsg, const unsigned int size)
 	for (i = 0; i < size; i++)
 		if (pMsg[i] == gEeprom.DTMF_GROUP_CALL_CODE)
 			break;
-		
+
 	return (i < size) ? DTMF_CALL_MODE_GROUP : DTMF_CALL_MODE_NOT_GROUP;
 }
 
@@ -189,7 +189,7 @@ void DTMF_HandleRequest(void)
 		DTMF_clear_RX();
 		return;
 	}
-	
+
 	if (!gRxVfo->DTMF_DECODING_ENABLE && !gSetting_KILLED)
 	{	// D-DCD is disabled or we're alive
 		DTMF_clear_RX();
@@ -207,7 +207,7 @@ void DTMF_HandleRequest(void)
 
 		if (DTMF_CompareMessage(gDTMF_RX + Offset, String, strlen(String), true))
 		{	// bugger
-	
+
 			if (gEeprom.PERMIT_REMOTE_KILL)
 			{
 				gSetting_KILLED = true;      // oooerr !
@@ -238,17 +238,17 @@ void DTMF_HandleRequest(void)
 			return;
 		}
 	}
-	
+
 	if (gDTMF_RX_index >= 9)
 	{	// look for the REVIVE code
-		
+
 		sprintf(String, "%s%c%s", gEeprom.ANI_DTMF_ID, gEeprom.DTMF_SEPARATE_CODE, gEeprom.REVIVE_CODE);
 
 		Offset = gDTMF_RX_index - strlen(String);
 
 		if (DTMF_CompareMessage(gDTMF_RX + Offset, String, strlen(String), true))
 		{	// shit, we're back !
-	
+
 			gSetting_KILLED  = false;
 
 			DTMF_clear_RX();
@@ -268,7 +268,7 @@ void DTMF_HandleRequest(void)
 	{	// look for ACK reply
 
 		strcpy(String, "AB");
-		
+
 		Offset = gDTMF_RX_index - strlen(String);
 
 		if (DTMF_CompareMessage(gDTMF_RX + Offset, String, strlen(String), true))
@@ -290,7 +290,7 @@ void DTMF_HandleRequest(void)
 	    gDTMF_CallMode  == DTMF_CALL_MODE_NOT_GROUP &&
 	    gDTMF_RX_index >= 9)
 	{	// waiting for a reply
-	
+
 		sprintf(String, "%s%c%s", gDTMF_String, gEeprom.DTMF_SEPARATE_CODE, "AAAAA");
 
 		Offset = gDTMF_RX_index - strlen(String);
@@ -373,25 +373,27 @@ void DTMF_Reply(void)
 				pString = String;
 			}
 			break;
-	
+
 		case DTMF_REPLY_AB:
 			pString = "AB";
 			break;
-	
+
 		case DTMF_REPLY_AAAAA:
 			sprintf(String, "%s%c%s", gEeprom.ANI_DTMF_ID, gEeprom.DTMF_SEPARATE_CODE, "AAAAA");
 			pString = String;
 			break;
-	
+
 		default:
 		case DTMF_REPLY_NONE:
 			if (gDTMF_CallState != DTMF_CALL_STATE_NONE        ||
 			    gCurrentVfo->DTMF_PTT_ID_TX_MODE == PTT_ID_OFF ||
-			    gCurrentVfo->DTMF_PTT_ID_TX_MODE == PTT_ID_BOT)
+			    gCurrentVfo->DTMF_PTT_ID_TX_MODE == PTT_ID_EOT)
 			{
 				gDTMF_ReplyState = DTMF_REPLY_NONE;
 				return;
 			}
+
+			// send TX-UP DTMF
 			pString = gEeprom.DTMF_UP_CODE;
 			break;
 	}
@@ -400,16 +402,16 @@ void DTMF_Reply(void)
 
 	if (pString == NULL)
 		return;
-	
+
 	Delay = gEeprom.DTMF_PRELOAD_TIME;
-	
+
 	if (gEeprom.DTMF_SIDE_TONE)
 	{	// the will also hear the transmitted tones
 		GPIO_SetBit(&GPIOC->DATA, GPIOC_PIN_AUDIO_PATH);
 		gEnableSpeaker = true;
 		Delay = (gEeprom.DTMF_PRELOAD_TIME < 60) ? 60 : gEeprom.DTMF_PRELOAD_TIME;
 	}
-	
+
 	SYSTEM_DelayMs(Delay);
 
 	BK4819_EnterDTMF_TX(gEeprom.DTMF_SIDE_TONE);
diff --git a/firmware.bin b/firmware.bin
index ccb6cb5..c88fd6e 100644
Binary files a/firmware.bin and b/firmware.bin differ
diff --git a/firmware.packed.bin b/firmware.packed.bin
index 23185e1..4a97a7e 100644
Binary files a/firmware.packed.bin and b/firmware.packed.bin differ
diff --git a/frequencies.c b/frequencies.c
index b36c5a8..ca3fe86 100644
--- a/frequencies.c
+++ b/frequencies.c
@@ -25,6 +25,7 @@ const freq_band_table_t BX4819_band2 = {84000000, 130000000};
 const freq_band_table_t frequencyBandTable[7] =
 {
 	#ifndef ENABLE_WIDE_RX
+		// QS original
 		{ 5000000,   7600000},
 		{10800000,  13600000},
 		{13600000,  17400000},
@@ -33,6 +34,7 @@ const freq_band_table_t frequencyBandTable[7] =
 		{40000000,  47000000},
 		{47000000,  60000000}
 	#else
+		// extended range
 		{ 1800000,  10800000},
 		{10800000,  13600000},
 		{13600000,  17400000},
@@ -59,28 +61,12 @@ const freq_band_table_t frequencyBandTable[7] =
 	};
 #endif
 
-#if 0
-	const uint16_t StepFrequencyTable[7] =
-	{
-		250,
-		500,
-		625,
-		1000,
-		1250,
-		2500,
-		833
-	};
+#ifndef ENABLE_12_5KHZ_STEP
+	// QS steps (*10 Hz)
+	const uint16_t StepFrequencyTable[7] = {250, 500, 625, 1000, 1250, 2500, 833};
 #else
-	const uint16_t StepFrequencyTable[7] =
-	{
-		125,
-		250,
-		625,
-		1000,
-		1250,
-		2500,
-		833
-	};
+	// includes 1.25kHz step
+	const uint16_t StepFrequencyTable[7] = {125, 250, 625, 1000, 1250, 2500, 833};
 #endif
 
 FREQUENCY_Band_t FREQUENCY_GetBand(uint32_t Frequency)
@@ -89,7 +75,8 @@ FREQUENCY_Band_t FREQUENCY_GetBand(uint32_t Frequency)
 	for (band = ARRAY_SIZE(frequencyBandTable) - 1; band >= 0; band--)
 		if (Frequency >= frequencyBandTable[band].lower)
 //		if (Frequency <  frequencyBandTable[band].upper)
-			return band;
+			return (FREQUENCY_Band_t)band;
+
 	return BAND1_50MHz;
 //	return BAND_NONE;
 }
diff --git a/frequencies.h b/frequencies.h
index 468e245..5b38dd7 100644
--- a/frequencies.h
+++ b/frequencies.h
@@ -19,7 +19,7 @@
 
 #include <stdint.h>
 
-//#include "radio.h"
+#define ENABLE_12_5KHZ_STEP
 
 typedef struct {
 	const uint32_t lower;
@@ -43,7 +43,8 @@ enum FREQUENCY_Band_t {
 };
 typedef enum FREQUENCY_Band_t FREQUENCY_Band_t;
 
-#if 0
+#ifndef ENABLE_12_5KHZ_STEP
+	// QS steps
 	enum STEP_Setting_t {
 		STEP_2_5kHz = 0,
 		STEP_5_0kHz,
@@ -54,6 +55,7 @@ typedef enum FREQUENCY_Band_t FREQUENCY_Band_t;
 		STEP_8_33kHz
 	};
 #else
+	// includes 1.25kHz step
 	enum STEP_Setting_t {
 		STEP_1_25kHz = 0,
 		STEP_2_5kHz,
@@ -66,12 +68,12 @@ typedef enum FREQUENCY_Band_t FREQUENCY_Band_t;
 #endif
 typedef enum STEP_Setting_t STEP_Setting_t;
 
+extern const uint16_t     StepFrequencyTable[7];
+
 #ifdef ENABLE_NOAA
 	extern const uint32_t NoaaFrequencyTable[10];
 #endif
 
-extern const uint16_t     StepFrequencyTable[7];
-
 FREQUENCY_Band_t FREQUENCY_GetBand(uint32_t Frequency);
 uint8_t          FREQUENCY_CalculateOutputPower(uint8_t TxpLow, uint8_t TxpMid, uint8_t TxpHigh, int32_t LowerLimit, int32_t Middle, int32_t UpperLimit, int32_t Frequency);
 uint32_t         FREQUENCY_FloorToStep(uint32_t Upper, uint32_t Step, uint32_t Lower);
@@ -80,4 +82,3 @@ int              TX_freq_check(const uint32_t Frequency);
 int              RX_freq_check(const uint32_t Frequency);
 
 #endif
-
diff --git a/radio.h b/radio.h
index 34d973e..bdd0aae 100644
--- a/radio.h
+++ b/radio.h
@@ -43,10 +43,10 @@ enum {
 };
 
 enum PTT_ID_t {
-	PTT_ID_OFF = 0,
-	PTT_ID_BOT,
-	PTT_ID_EOT,
-	PTT_ID_BOTH
+	PTT_ID_OFF = 0,    // OFF
+	PTT_ID_BOT,        // BEGIN OF TX
+	PTT_ID_EOT,        // END OF TX
+	PTT_ID_BOTH        // BOTH
 };
 typedef enum PTT_ID_t PTT_ID_t;
 
diff --git a/ui/menu.c b/ui/menu.c
index 8cf01e3..0a96926 100644
--- a/ui/menu.c
+++ b/ui/menu.c
@@ -455,7 +455,7 @@ void UI_DisplayMenu(void)
 		#endif
 
 		case MENU_STEP:
-			sprintf(String, "%d.%02uKHz", StepFrequencyTable[gSubMenuSelection] / 100, abs(StepFrequencyTable[gSubMenuSelection]) % 100);
+			sprintf(String, "%d.%02ukHz", StepFrequencyTable[gSubMenuSelection] / 100, abs(StepFrequencyTable[gSubMenuSelection]) % 100);
 			break;
 
 		case MENU_TXP: