Regional

Radio Codes and Signals - Listing of Radio Ten codes and other signals for the United States and Canada.
www.bearcat1.com/radio.htm

Scan North - Radio scanning frequencies and information for the North of England.
www.northumberlandstreet.com/

ScanEcoute - French-based scanning group with frequency lists, news, forums and links. [English-French]
scanecoute.free.fr

ScanUK - U.K-based radio and scanning forum. Features an in-depth frequency list and message boards.
scanuk.9.forumer.com/