eham.net is a web site dedicated to ham radio (amateur radio).

free ham radio flash cards, practice tests, and question pools as well as introduction to ham radio and explanations for questions.

worldwide amateur radio repeater directory

parks program for amateur radio, also known as parks on the air (pota), including a map and list of entities for the program.

the electronic qsl card centre

welcome to the radio society of great britain, the uk national amateur radio organization - gb2rs news, radcom, clubs, education, forums, shop and lots more

qso/swl real time maps and lists

the world's largest radio communications data management and media provider.

amateur (ham) radio website with information for those who want to be a ham radio operator, new ham and general information for the seasoned ham radio operator. license study material, practice tests, practice code, antenna design, lots of ham radio info for all.

the renowned dx summit by oh8x has been a reliable source of current and historical dx activity on radio for many years.