Summary: Although this is a discontinued product, it is still a good GPS, even for APRS use. I bought one of these to use for a mobile APRS setup, and had it up and running within minutes. The unit can power directly off 12 volts DC, and provides NMEA data out via a serial connection. You can attached an external antenna for better reception. When attached to a compatible APRS transceiver such as the Kenwood TH-7D, received stations will show up as way points on the GPS display.