Detailed ham radio history page. Gives history of 2 way communications dating back to beacon fires. Cites many sources for ham radio history and includes details on US ham radio licensing.
The history of Single Side Band (SSB). Ham Radio operators have recognized SSB as an effective means of voice communications since its inception - and have played a role in its development. These pages define SSB, talk about its history, compare SSB to other voice modes (AM and FM), and give a good overview of SSB propagation characteristics. These are presented both in English and German.