What is APRS?
APRS (Automatic Packet Reporting System) is a digital communications system that has been developed by Bob Bruninga, callsign WB4APR. It uses packet radio to send, on amateur radio frequencies, real time tactical information. The APRS network is used by ham radio operators all over the world. Information shared over the APRS network is for example geo positions (of radio stations or vehicles with trackers), text messages, announcements, local alerts, and weather reports.