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. APRS: Automatic Position Reporting System - Java Applet for Automatic Position Reporting System showing position reports from amateur radio operators in South Florida. APRS in Switzerland - Provides information on APRS in Switzerland, maps and javAPRS live from HB9PVI and HB9BA. Southern Oregon Amateur Packet Radio Association - Promoting packet in the mountainous region of Southern Oregon and Northern California. APRS-IS Information - Resource for javAPRS, javAPRSSrvr, and the APRS weather server. APRS Florida - Server and repeater information, live Central Florida lightning and weather data. APRS DB0ANF - German access to an online station database. Includes APRS activity in Germany. OpenAPRS - Provides real-time APRS data in and around Napa, California. KA1FSB - 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. Amateur Radio Teletype (RTTY) - Provides information relating to RTTY and BAUDOT communications. Includes history, resources and schematics. Northern California Packet Association (NCPA) - Amateur packet radio club for northern California area. Contains information on how to join, meeting and member details. Introduction to Packet Radio by Larry Kenney, WB9LOZ - A series of eighteen articles originally written in 1988 to appear in Nuts & Volts, the newsletter of the San Francisco Amateur Radio Club. NC7J DX Web Cluster - DX packet cluster for the Utah Contest Club, Layton, Utah. APRS: Automatic Packet Reporting System - Contains links, downloads and maps of activity in the United States. Southern Ontario Packet Radio Association (SOPRA) - Official site. Features details on the packet nodes and services provided by the organization to the amateur radio community, with frequencies. APRS on Google Maps - Global real-time APRS map view, updates automatically without reloading.