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Old 02-26-2008, 02:17 AM
Seldom Seen's Avatar
Seldom Seen Seldom Seen is offline
Hard Core 4+
Join Date: Aug 2005
Location: Highlands Ranch
Posts: 564

Yes you need a GPS, a TNC (terminal node controller) and a radio. The GPS sends your location data to the TNC, the TNC encodes it and sends it over the air to a digipeater. A digipeater is a repeater that is connected to the Internet and is able to receive the digital signal and send it to a site like or The location of the transmitting station shows up on a map.

APRS can also be done simplex where the TNC is connected to a computers sound card and the data is decoded and overlaid on mapping software.

Some radios can be purchased with a built in TNC so all you have to do is connect a GPS. Icom now has a rig with a built in TNC and GPS.
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