and TexNet. In principle, any network layer protocol may be used, including the ubiquitous Internet Protocol. See also Automatic Packet Reporting System D-STAR Spartan Packet Radio Experiment – an experiment intended to test the tracking of satellites via amateur packet radio, flown on Space Shuttle mission STS-72 Tucson Amateur Packet Radio Winlink Wireless ad hoc network References Further reading External links "Packet Radio Physical Layer" Useful notes taken by N1VG during the development of the OpenTracker TNC/APRS node Packet radio software Fast Packet Systems 44.0.0.0 AMRAD TARPN