- American Radio Relay League (ARRL), the national society for amateur radio.
- W1NRG on QRZ.com
- Ten-Ten International, ways to get active on 10 meters with lots of fun, contests, awards, and a just plain friendly crowd.
- Castle Craig Chapter of Ten-Ten International, Connecticut’s Ten-Ten chapter, with information on local 10-10 activities and awards.
- Radio Amateur Satellite Corporation (AMSAT), ham radio in space!
- Quicksilver Radio Products, the “everything else” you need for ham radio, including antennas, coax, connectors, cables, tools and more!
