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14300.net
Advocacy site designed to promote activities on frequency in the 20-meter band.
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1721 HF Roundtable Group
Discussion group composed of amateur Ham operators from all over the U.S and Canada.
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American Radio Relay League
Offering information membership, news, events schedule, and related organizations.
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Anderson Repeater Club
Features resource blogs about amateur radio, plus forum site for enthusiasts and hobbyists.
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ARRL Rocky Mountain Division
Provides information and services to ham radio operators and enthusiasts in Colorado, Utah, New Mexico, and Wyoming.
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College Amateur Radio Club Association
Organization established to facilitate the creation of amateur radio hobbyist clubs for college, university, and higher education school students.
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Digital Voice Amateur Radio Association (DVARA)
Serves as an information resource for the amateur radio digital voice community. Presents an overview of ham radio and study materials.
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Ham Radio Forum
Features online discussion forum site for all amateur radio enthusiasts.
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Ham Radio India
Resource site for amateur Ham radio enthusiasts in India, with details on latest news updates, forum discussions, photos, and links.
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IOOK- International Order of Krazies
Group of ham radio operators from the USA and around the world that features clubs' news, blogs, photos, repeater frequencies and links.
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Penn-Ohio DX Society
Independent amateur radio group dedicated to entertainment on the HF bands. Includes details on sponsored contests and events, awards program, and membership information.
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PI4AJS
Provides historical information about the amateur contest group, also includes frequency details, photo gallery, and related links.
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PVRA Repeater Club
Presents club and local frequency information, photos, and links about the Connecticut-based group.
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QRZ.com
Features resources that includes discussion forums, amateur radio exams, equipment modifications, and call sign database.
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Queensland Digital Group Inc.
Provides amateur radio enthusiasts with information on radio FAQ's, license applications, resource books, and operating references.
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Radio Amateur Old Timers' Association
Maintains the traditions and spirit of amateur radio. Includes membership details, news updates, links, and contact facts.