CBTricks
Provides a wide variety of technically oriented information aimed at the Citizens Band, Amateur, and Radios.
http://www.cbtricks.com/

MilAirComms.Com
Find many Military HF information as well as Pirate and Utility comms. Includes information, schedules and frequencies of SWL Broadcasters of interest during time of war or conflict.
http://www.milaircomms.com/

Radio Amateur Old Timers' Association
Membership organization providing amateur HAM radio enthusiasts with discussions, articles, tips and tricks. Includes awards, downloads and news.
http://www.raota.org