diff --git a/NXDNTX.cpp b/NXDNTX.cpp
index b3fb55c..16e6d55 100644
--- a/NXDNTX.cpp
+++ b/NXDNTX.cpp
@@ -29,10 +29,10 @@ static q15_t RRC_0_2_FILTER[] = {0, 0, 0, 0, 850, 219, -720, -1548, -1795, -1172
                                  -4544, -1431, 1447, 3073, 3120, 1927, 237, -1172, -1795, -1548, -720, 219, 850}; // numTaps = 45, L = 5
 const uint16_t RRC_0_2_FILTER_PHASE_LEN = 9U; // phaseLength = numTaps/L
 
-const q15_t NXDN_LEVELA =  1683;
-const q15_t NXDN_LEVELB =  561;
-const q15_t NXDN_LEVELC = -561;
-const q15_t NXDN_LEVELD = -1683;
+const q15_t NXDN_LEVELA =  1680;
+const q15_t NXDN_LEVELB =  560;
+const q15_t NXDN_LEVELC = -560;
+const q15_t NXDN_LEVELD = -1680;
 
 const uint8_t NXDN_PREAMBLE[] = {0x57U, 0x75U, 0xFDU};
 const uint8_t NXDN_SYNC = 0x5FU;