While I know what CTCSS and DCS tones are and how to program them, I don't know what the differences between Tone vs Tone Sql & DTCS Code vs DTCS Rx Code are. Can someone please explain the differences? N9PTC _______________________________________________ chirp_users mailing list chirp_users@intrepid.danplanet.com http://intrepid.danplanet.com/mailman/listinfo/chirp_users