diff --git a/src/module/decode/p25/C4FMSymbolFilter.java b/src/module/decode/p25/C4FMSymbolFilter.java
index 6983d28a..17be10ac 100644
--- a/src/module/decode/p25/C4FMSymbolFilter.java
+++ b/src/module/decode/p25/C4FMSymbolFilter.java
@@ -260,9 +260,6 @@ public class C4FMSymbolFilter implements FrequencyCorrectionResetListener,
 //						.getErrorCorrection() );
 
 			mFrequencyAdjustmentRequested = 0;
-
-			/* reset internal frequency error tracker */
-			mCoarseFrequencyCorrection = 0;
 		}
 	}
 
diff --git a/src/module/decode/p25/P25_C4FMDecoder.java b/src/module/decode/p25/P25_C4FMDecoder.java
index 75f1669b..1bd7f486 100644
--- a/src/module/decode/p25/P25_C4FMDecoder.java
+++ b/src/module/decode/p25/P25_C4FMDecoder.java
@@ -24,6 +24,7 @@ import instrument.tap.stream.FloatBufferTap;
 import instrument.tap.stream.FloatTap;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 
 import org.slf4j.Logger;
@@ -74,8 +75,10 @@ public class P25_C4FMDecoder extends P25Decoder implements IRealBufferListener
 		super( aliasList );
 		
 		/* Filter demodulated sample buffers */
-		mC4FMPreFilter = new RealFIRFilter_RB_RB( FilterFactory.getLowPass( 
-				48000, 6750, 7500, 60, WindowType.HANNING, true ), 1.0f );
+		float[] filter = FilterFactory.getLowPass( 48000, 2500, 4000, 80, WindowType.HANNING, true );
+
+		mLog.debug( "Filter taps:" + filter.length + " co:" + Arrays.toString( filter ) );
+		mC4FMPreFilter = new RealFIRFilter_RB_RB( filter, 1.0f );
 
 		/* Issue tuned frequency correction commands, remotely controlled by the 
 		 * downstream symbol filter */