Provides access to online station database in Germany.

Information on APRS in Switzerland that includes software, real-time applications, and map files.

Search application that targets sites from APRS software authors and other sites, with detailed documentation.

Internet-based network provides worldwide capabilities for public service and promotions of amateur radio.

Contains information about BayCom packet radio hardware and software for radio amateurs.

Details about electronic projects and kits for GPS and APRS purposes. Includes product listings and contact facts.

Features amateur packet-radio bulletin board software for DOS, Windows, and Linux.

Develops software for amateur packet-radio purposes. Includes downloads, documentation and mailing list.

Committee of packet representatives in Northern California fosters the digital communication modes of amateur radio.

Showcases real-time APRS data in Napa, California. Includes map guides, database information, and links.