Overhaul PSK demodulator.

Author: wb2osz

src/audio.h

@@ -145,16 +145,11 @@ struct audio_s {
 
 					// Original implementaion used alternative A for 2400 bbps PSK.
 					// Years later, we discover that MFJ-2400 used alternative B.
-					// It's likely the others did too.
-					// For release 1.6, default to original style but print warning.
-					// Later default to MFJ compatible and still print warning if
-					// if user did not pick one explicitly.
+					// It's likely the others did too.  it also works a little better.
+					// Default to MFJ compatible and print warning if user did not
+					// pick one explicitly.
 
-#if (MAJOR_VERSION > 1) || (MINOR_VERSION > 6)
 #define V26_DEFAULT V26_B
-#else
-#define V26_DEFAULT V26_A
-#endif
 
 	    enum dtmf_decode_t { DTMF_DECODE_OFF, DTMF_DECODE_ON } dtmf_decode; 
 

src/demod.c

@@ -494,7 +494,7 @@ int demod_init (struct audio_s *pa)
 	        dw_printf ("Command line options -j and -J can be used for channel 0.\n");
 	        dw_printf ("For more information, read the Dire Wolf User Guide and\n");
 	        dw_printf ("2400-4800-PSK-for-APRS-Packet-Radio.pdf.\n");
-	        dw_printf ("The default in this release could be different in a later release.\n");
+	        dw_printf ("The default is now MFJ-2400 compatibility mode.\n");
 
 	        save_audio_config_p->achan[chan].v26_alternative = V26_DEFAULT;
 	      }