Tucson Amateur Packet Radio (TAPR)
TAPR is an international non-profit educational research and development organization focused on the issues of amateur radio wireless digital communications.
S51RM and S53RM
Information resource for S5-PSK 1.2 Mbps BPSK packet radio station for 23 and 13cm (and 9cm), S5-70WB FM packet radio station for 70cm band and 19k2 to 76k8 bps, S5-PCC - packet communication card.
Server and repeater information, live Central Florida lightning and weather data.
German access to an online station database. Includes APRS activity in Germany.
Provides real-time APRS data in and around Napa, California.
Karl Norton provides information about JNOS and AX25 utilities for Packet Radio on Linux. The site also covers the topics of homebrew, TCM3105, net105, and J-Pole antennas.