Radio hams and techies in Maryland, Virginia, and DC get together to throw a flea market for geeks. Bring cash.
A wiki for documenting and discussing radio broadcasts - short, medium, and longwave as well as anomalies, mysteries, oddities, and pirate radio.
How to turn an ordinary retractable measuring tape into a directional VHF antenna (tm). Good for direction finding.
If you need any information at all pertaining to amateur radio (be it ham, scanners, theory, utilities, CB, or technical matters) this should be your first stop. If you can't find it here chances are you'll have to do it yourself and then submit your website to this index.
A worldwide volunteer system of radio hams who provide limited net.access during emergencies so that people can communicate.
An interactive map of ham radio repeaters around the world, searchable by callsign, coordinates, tags, state, or relative directions.
The website of an international group of numbers stations enthusiasts. Has a forum, a blog, a podcast (good luck finding the RSS feed), live streams...
An ARRL affiliated amateur radio organization for members of the LGBT community.
The ARRL's official amateur radio bandplan reference.