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

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.

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