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APRS was developed in the early 1990s

While packet was developed in Vancouver BC (hotly followed by lots of activity in Arizona) it was Robert Bruninga WB4APR that was the driving force  behind APRS. The acronym is sometimes referred to as "Automatic Position Reporting System" but it is really "Automatic Packet Reporting System". Reporting a position is just one of the things that APRS can do. Bob's website is at The DNS is a bit screwy there, so if you can't reach it, there is a mirror site at

See also the NWAPRS site at for lots of information on how to set up a digipeater using the settings that are now recommended for all of North America. It also has suggestions for users as well. Keep in mind that RELAY, WIDE, TRACE and TRACEn-N are OBSOLETE in North America. The recommended path for mobiles is WIDE1-1,WIDE2-1. The recommended path for fixed stations is WIDE2-2 unless a shorter path is needed (e.g. within earshot of a "big" high elevation digi) in which case you could use WIDE2-1. The common APRS frequency in North America is 144.390 MHz, but some low powered trackers use 144.990. Most of the rest of the world uses 144.800 MHz.


A few APRS Pics...


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