diff --git a/Makefile b/Makefile
index f8045dd..bac1454 100644
--- a/Makefile
+++ b/Makefile
@@ -19,7 +19,7 @@ ENABLE_TX_WHEN_AM             := 0
 ENABLE_CTCSS_TAIL_PHASE_SHIFT := 1
 ENABLE_MAIN_KEY_HOLD          := 1
 ENABLE_BOOT_BEEPS             := 0
-ENABLE_COMPANDER              := 1
+ENABLE_COMPANDER              := 0
 ENABLE_SHOW_CHARGE_LEVEL      := 0
 ENABLE_REVERSE_BAT_SYMBOL     := 1
 ENABLE_NO_SCAN_TIMEOUT        := 1
diff --git a/driver/bk4819.c b/driver/bk4819.c
index 58e8fa5..b212f1b 100644
--- a/driver/bk4819.c
+++ b/driver/bk4819.c
@@ -536,9 +536,9 @@ void BK4819_SetFilterBandwidth(const BK4819_FilterBandwidth_t Bandwidth, const b
 	// if REG_43 <5> == 1 RF filter bandwidth * 2
 	//
 	// REG_43 <8:6>   1 AFTxLPF2 filter Band Width
-	//                1 = 2.5  kHz (for 12.5k Channel Space)
+	//                1 = 2.5  kHz (for 12.5k channel space)
 	//                2 = 2.75 kHz
-	//                0 = 3.0  kHz (for 25k   Channel Space)
+	//                0 = 3.0  kHz (for 25k   channel space)
 	//                3 = 3.5  kHz
 	//                4 = 4.5  kHz
 	//                5 = 4.25 kHz
@@ -571,7 +571,7 @@ void BK4819_SetFilterBandwidth(const BK4819_FilterBandwidth_t Bandwidth, const b
 		}
 		else
 		{
-			BK4819_WriteRegister(BK4819_REG_43,
+			BK4819_WriteRegister(BK4819_REG_43, // 0x3028);         // 0 011 000 000 10 1 0 00
 				(0u << 15) |     // 0
 				(3u << 12) |     // 3 RF filter bandwidth
 //				(0u <<  9) |     // 0 RF filter bandwidth when signal is weak
diff --git a/firmware.bin b/firmware.bin
index 69d3dfa..a6f6514 100644
Binary files a/firmware.bin and b/firmware.bin differ
diff --git a/firmware.packed.bin b/firmware.packed.bin
index c68b37c..13e2b16 100644
Binary files a/firmware.packed.bin and b/firmware.packed.bin differ