The best way to use a KPC3+ for APRS tracking: 1 - sell the KPC3+ 2 - buy an opentracker 3 - take the XYL to dinner with the change Transmitting complete NMEA sentences is a very inefficient way to do APRS. You use 2x or 3x the bandwidth of other stations, and you manage to convey _less_ information with that extra bandwidth. -Jason kg4wsv