APRS Packet Routing

This might be another personal best in a different category:

KE4ZNU-9 APRS to KB2KUU-13 - Lafayette NJ

KE4ZNU-9 APRS to KB2KUU-13 - Lafayette NJ

The path from KE4ZNU-9 (on my bike in Pleasant Valley) to KB2KUU-13 near Lafayette, NJ, spans a bit over 90 km / 55 miles, which isn’t bad for a 5 W (that’s optimistic) hand-held radio through a dual-band mobile antenna bolted to the seat frame with my head much too close to the base. The topography lay in my favor, though: Pleasant Valley sits near the top of the Wappingers Creek watershed (admittedly, barely 200 feet above sea level) and the valleys run southwest-to-northeast all along this part of the East Coast. The KB2KUU-13 antenna may be only 20 feet above average terrain, but that puts it 600 feet above sea level with a commanding view to the northeast.

Another packet sent a few minutes later took a much longer path to an APRS iGate:

KE4ZNU-9 APRS to WA2GUG-15 - Long Island - 2012-02-01

KE4ZNU-9 APRS to WA2GUG-15 - Long Island - 2012-02-01

The first hop covered about 80 km / 50 miles to W2VER-15. That antenna is 320 feet above average terrain, but that’s with a 1400 foot base: a ridge near Hamburg Mountain. The next hop is about 20 miles to WB2FTZ-15, then 60 km / 40 miles across the plains and out to WA2GUG-15 near Hempstead on Long Island.

Normally, of course, a closer digipeater snags packets from my bike; most go through WA2YSM-15 or KC2DAA-2 to K2MHV-6 and probably don’t clog up the entire eastern seaboard. It’s hard to tell, though, because the APRS database records only the first successful capture of a given packet.

The whole bike ride looked like this:

KE4ZNU-9 trip - 2012-02-01

KE4ZNU-9 trip - 2012-02-01

The APRS spots missed the sprint along West Road into Pleasant Valley, but you get the general idea: 22 miles, 15 mph average speed, temperature around 58 °F, a fine day for a ride!

  1. #1 by Aki on 2012-02-03 - 09:46

    “a fine day for a ride!”

    Indeed. They never learn, visibility about 20m and speed at least 80km/h. Some way so therapeutic…

    http://www.hs.fi/kotimaa/Uudenmaan+liikenteen+tilanne+katastrofaalinen+sanoo+poliisi/a1305554794021