Is it worthwhile buying the Alinco DT135 radio with the built-in TNC to sue as a tracker and/or with APRS+SA? I have been reading a bit about the TNC has some issues with KISS commands. Would it be better to just buy the radio and use my Tiny Trak or PK-12 on it? Does the TNC-X work well with APRS+SA and the Alinco? Thanks, 73 de N3HGB Joe