World's leading amateur radio callsign database news, technical articles, QSL routes, online Logbook, discussion forums, practice licence exam tests, and technical data about...
- eHam.net is a Web site dedicated to ham radio (amateur radio).
Contesting Online - Amateur (ham) radio contesting community web site featuring news, articles, forums, links, and surveys
The Electronic QSL Card Centre
Free hamradio callbook with very fast XML access for logging programs, recent activity, logsearch, condx prediction, multilanguage support etc.
QRZCQ / The database for radio hams / Ham radio call database for everyone