The APRS Global Internet System

The Automatic Packet Reporting System (APRS) is a global two-way tactical digital communications system that allows amateur radio operators to transmit weather data, telemetry, text messages, and plot their location on a map when no Internet or Cellular coverage is available.  APRS supports callsign to callsign email, messaging, bulletins, and voice communications.  APRS enables any amateur radio operator to contact any other amateur radio operator anywhere in the world at anytime.  Learn more about the APRS system at

A vehicle equipped with a GPS receiver, a VHF or HF transceiver, and a small device called a transponder transmits it's location, speed and course in a small data packet, which is then received by a nearby iGate receiving station which then forwards the packet to the Internet.  Systems connected to the Internet can send information on the APRS-IS without a radio transmitter, or collect and display information transmitted anywhere in the world.