Amateur Radio Public Seismic Network (ARPSN)
APRS Sources

Automatic Packet Reporting System
Bob Bruninga, WB4APR
http://www.ew.usna.edu/~bruninga/aprs.html

Automatic Position Reporting System
APRS Working Group - Protocol Version 1.0
Technical Editor: Ian Wade, G3NRW
APRS101.pdf

QuakeAPRS
Richard Parry, W9IF
http://w9if.net - http://w9if.net/iweb/quakeaprs/index.shtml
quakeaprs-dcc00.pdf

FindU.com
findU is a database archiving weather, position, telemetry, and message data. The primary source of data is an amateur radio system called APRS, some weather data comes from an internet based system called the Citizen Weather Observer Program.
http://www.findu.com/

AMSAT APRS
An Introduction to Automatic Packet / Position Reporting System Reporting System
http://www.amsat.org/amsat-new/information/faqs/aprs.php

TAPR APRS/GPS
http://www.tapr.org/aprs.html

Avmap G5 Kenwood D710 Tactical APRS Mode

Don Arnold, W6GPS
http://www.geosat.us/

VHF Propagation Maps
Experimental maps real time vhf activity as reported by the APRS-IS network.
http://www.mountainlake.k12.mn.us/ham/aprs/path.cgi?map=na

APRS-IS
http://www.aprs-is.net/

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