diff --git a/app/spectrum.c b/app/spectrum.c
index 37435a4..511be14 100644
--- a/app/spectrum.c
+++ b/app/spectrum.c
@@ -22,19 +22,8 @@ struct FrequencyBandInfo {
     uint32_t middle;
 };
 
-const struct FrequencyBandInfo FrequencyBandTable[7] = {
-       [BAND1_50MHz ] = {.lower =  1600000, .middle =  6500000, .upper =  7600000},
-       [BAND2_108MHz] = {.lower = 10800000, .middle = 12200000, .upper = 13599990},
-       [BAND3_136MHz] = {.lower = 13600000, .middle = 15000000, .upper = 17399990},
-       [BAND4_174MHz] = {.lower = 17400000, .middle = 26000000, .upper = 34999990},
-       [BAND5_350MHz] = {.lower = 35000000, .middle = 37000000, .upper = 39999990},
-       [BAND6_400MHz] = {.lower = 40000000, .middle = 43500000, .upper = 46999990},
-       [BAND7_470MHz] = {.lower = 47000000, .middle = 55000000, .upper = 130000000},
-};
-
-
-#define F_MIN FrequencyBandTable[0].lower
-#define F_MAX FrequencyBandTable[ARRAY_SIZE(FrequencyBandTable) - 1].upper
+#define F_MIN frequencyBandTable[0].lower
+#define F_MAX frequencyBandTable[ARRAY_SIZE(frequencyBandTable) - 1].upper
 
 const uint16_t RSSI_MAX_VALUE = 65535;
 
@@ -76,12 +65,12 @@ SpectrumSettings settings = {stepsCount: STEPS_64,
 
 uint32_t fMeasure = 0;
 uint32_t currentFreq, tempFreq;
-uint16_t rssiHistory[128] = {};
+uint16_t rssiHistory[128];
 
 uint8_t freqInputIndex = 0;
 uint8_t freqInputDotIndex = 0;
 KEY_Code_t freqInputArr[10];
-char freqInputString[11] = "----------\0"; // XXXX.XXXXX\0
+char freqInputString[11];
 
 uint8_t menuState = 0;
 uint16_t listenT = 0;
diff --git a/helper/battery.c b/helper/battery.c
index 72171da..13e0ec2 100644
--- a/helper/battery.c
+++ b/helper/battery.c
@@ -86,23 +86,12 @@ void BATTERY_GetReadings(const bool bDisplayBatteryLevel)
 
 	gBatteryDisplayLevel = 0;
 
-	if (gBatteryCalibration[5] < Voltage)
-		gBatteryDisplayLevel = 6;
-	else
-	if (gBatteryCalibration[4] < Voltage)
-		gBatteryDisplayLevel = 5;
-	else
-	if (gBatteryCalibration[3] < Voltage)
-		gBatteryDisplayLevel = 4;
-	else
-	if (gBatteryCalibration[2] < Voltage)
-		gBatteryDisplayLevel = 3;
-	else
-	if (gBatteryCalibration[1] < Voltage)
-		gBatteryDisplayLevel = 2;
-	else
-	if (gBatteryCalibration[0] < Voltage)
-		gBatteryDisplayLevel = 1;
+	for(uint8_t i = 6; i > 0; i--){
+		if (Voltage > gBatteryCalibration[i-1]) {
+			gBatteryDisplayLevel = i;
+			break;
+		}
+	}
 
 	gBatteryVoltageAverage = (Voltage * 760) / gBatteryCalibration[3];