Long and Mediumwave

• International Radio Club of America  - International medium wave club provides historical information, upcoming DX test schedules, convention photos, and membership details.
• Longwave Club of America Home Page  - Promotes the long wave DXing hobbyist club and experiments on frequencies below 550 kHz on the 1750-meter band.
• National Radio Club Inc.  - Official site contains DX news magazine, audio services, photos and featured articles.