P25 Work in progress. Adds CRC checking to NID/DUID. Adds limiter to trellis decoder to prevent it from decoding an excessive error message. Updates channel state with initial handling/generation of call events.

src/decode/lj1200/LJ1200CallEvent.java

@@ -57,9 +57,9 @@ public class LJ1200CallEvent extends CallEvent
     }
 
     @Override
-    public int getChannel()
+    public String getChannel()
     {
-        return 0;
+        return null;
     }
 
     @Override