callsign		distance	last heard - UTC		callsign		distance	last heard - UTC
sm4prq		11.1 miles 347°	2012-01-21 15:43:26		SM4WJF-9		15.2 miles 21°	2012-02-13 16:24:08
SM4UNJ-7		16.5 miles 17°	2012-02-10 13:08:38		SM4UNJ-9		18.9 miles 12°	2012-02-13 15:35:05
SM4UNJ-1		18.9 miles 12°	2012-02-13 23:32:00		SM4KKL-1		22.5 miles 162°	2012-02-13 23:33:38
SM4KKL-5		23.0 miles 165°	2012-01-24 19:17:07		SK4DM-2		24.8 miles 355°	2012-02-13 23:33:43

This page shows real-time information collected from the Automatic Position Reporting System Internet network (APRS-IS). APRS is used by amateur (ham) radio operators to transmit real-time position information, weather data, telemetry and messages over the radio. A vehicle equipped with a GPS receiver, a VHF transmitter or HF transceiver and a small computer device called a tracker transmits it's location, speed and course in a small data packet, which is then received by a nearby iGate receiving site which forwards the packet on 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.