diff --git a/app/fm.c b/app/fm.c
index 49be38a..904474e 100644
--- a/app/fm.c
+++ b/app/fm.c
@@ -32,7 +32,7 @@
 uint16_t gFM_Channels[20];
 bool gFmRadioMode;
 uint8_t gFmRadioCountdown;
-volatile uint16_t gFmPlayCountdown = 1;
+volatile uint16_t gFmPlayCountdown;
 volatile int8_t gFM_Step;
 bool gFM_AutoScan;
 uint8_t gFM_ChannelPosition;
diff --git a/app/scanner.c b/app/scanner.c
index 257c0b7..181b42d 100644
--- a/app/scanner.c
+++ b/app/scanner.c
@@ -34,7 +34,7 @@ uint8_t gScanChannel;
 uint32_t gScanFrequency;
 uint8_t gScanPauseMode;
 SCAN_CssState_t gScanCssState;
-volatile bool gScheduleScanListen;
+volatile bool gScheduleScanListen = true;
 volatile uint16_t ScanPauseDelayIn10msec;
 uint8_t gScanProgressIndicator;
 uint8_t gScanHitCount;
diff --git a/app/uart.c b/app/uart.c
index 6d519ef..0364950 100644
--- a/app/uart.c
+++ b/app/uart.c
@@ -141,7 +141,7 @@ static union {
 
 static uint32_t Timestamp;
 static uint16_t gUART_WriteIndex;
-static bool bIsEncrypted;
+static bool bIsEncrypted = true;
 
 static void SendReply(void *pReply, uint16_t Size)
 {
diff --git a/driver/keyboard.c b/driver/keyboard.c
index bdfad89..cc19af6 100644
--- a/driver/keyboard.c
+++ b/driver/keyboard.c
@@ -20,8 +20,8 @@
 #include "driver/keyboard.h"
 #include "driver/systick.h"
 
-KEY_Code_t gKeyReading0;
-KEY_Code_t gKeyReading1;
+KEY_Code_t gKeyReading0 = KEY_INVALID;
+KEY_Code_t gKeyReading1 = KEY_INVALID;
 uint16_t gDebounceCounter;
 bool gWasFKeyPressed;
 
diff --git a/misc.c b/misc.c
index c0f2090..7a208eb 100644
--- a/misc.c
+++ b/misc.c
@@ -27,7 +27,6 @@ bool gSetting_500TX;
 bool gSetting_350EN;
 uint8_t gSetting_F_LOCK;
 bool gSetting_ScrambleEnable;
-uint8_t gSetting_F_LOCK;
 
 const uint32_t gDefaultAesKey[4] = {
 	0x4AA5CC60,
@@ -54,9 +53,9 @@ uint16_t gEEPROM_1F8C;
 uint8_t gMR_ChannelAttributes[207];
 
 volatile bool gNextTimeslice500ms;
-volatile uint16_t gBatterySaveCountdown;
+volatile uint16_t gBatterySaveCountdown = 1000;
 volatile uint16_t gDualWatchCountdown;
-volatile uint16_t gTxTimerCountdown = 1000;
+volatile uint16_t gTxTimerCountdown;
 volatile uint16_t g_20000342;
 volatile uint16_t gNOAA_Countdown;
 bool gEnableSpeaker;
@@ -90,7 +89,7 @@ bool gFlagAcceptSetting;
 bool gFlagRefreshSetting;
 bool gFlagSaveVfo;
 bool gFlagSaveSettings;
-uint8_t gFlagSaveChannel;
+uint8_t gFlagSaveChannel = 0xFF;
 bool gFlagSaveFM;
 uint8_t gDTMF_RequestPending;
 bool g_CDCSS_Lost;
@@ -105,7 +104,7 @@ uint16_t g_200003B6;
 uint16_t gVoxPauseCountdown;
 volatile uint16_t gFlashLightBlinkCounter;
 bool gFlagEndTransmission;
-uint8_t gLowBatteryCountdown;
+uint16_t gLowBatteryCountdown;
 uint8_t gNextMrChannel;
 ReceptionMode_t gRxReceptionMode;
 bool g_20000413;
@@ -141,8 +140,8 @@ volatile bool gTxTimeoutReached;
 volatile bool gNextTimeslice40ms;
 volatile bool gSchedulePowerSave;
 volatile bool gBatterySaveCountdownExpired;
-volatile bool gScheduleDualWatch;
-volatile bool gScheduleNOAA;
+volatile bool gScheduleDualWatch = true;
+volatile bool gScheduleNOAA = true;
 volatile bool gSystickFlag10;
 volatile bool gScheduleFM;
 
@@ -150,7 +149,7 @@ uint16_t gCurrentRSSI;
 
 volatile int8_t gStepDirection;
 
-bool gIsLocked;
+uint8_t gIsLocked = 0xFF;
 
 // --------
 
diff --git a/misc.h b/misc.h
index 190bf63..4940405 100644
--- a/misc.h
+++ b/misc.h
@@ -156,7 +156,7 @@ extern uint16_t g_200003B6;
 extern uint16_t gVoxPauseCountdown;
 extern volatile uint16_t gFlashLightBlinkCounter;
 extern bool gFlagEndTransmission;
-extern uint8_t gLowBatteryCountdown;
+extern uint16_t gLowBatteryCountdown;
 extern uint8_t gNextMrChannel;
 extern ReceptionMode_t gRxReceptionMode;
 extern bool g_20000413;
@@ -202,7 +202,7 @@ extern uint16_t gCurrentRSSI;
 
 extern volatile int8_t gStepDirection;
 
-extern bool gIsLocked;
+extern uint8_t gIsLocked;
 
 // --------