4 links
International Radio Club of America
ircaonline.org
A mediumwave club, The International Radio Club of America is dedicated to BCB, AM, MW.
Longwave Club of America Home Page
lwca.org
The LWCA was organized in January, 1974 to promote both DXing and experimenting on frequencies below 550 kHz and activity on the 1750 meter band.
The Medium Wave Circle
mwcircle.org
MWC is the only UK-based club specially for radio enthusiasts interested in medium wave and long wave radio.
The National Radio Club / DX Audio Service
WWW.NRCDXAS.ORG
The world's oldest and largest medium wave (MW/AM) DX club, which hosts DX Audio Service, books on tape for the sight impaired.