An entertainment broadcasting venture based in Wilkinsburg, Pennsylvania, became the first commercial radio station, KDKA, in 1920. The station WWJ, in Detroit, Michigan, also one of the firsts ...

Radio companies formed to build and sell ready-made machines. In 1920, Westinghouse, one of the leading radio manufacturers, had an idea for selling more radios: It would offer programming.

Listen on BBC Sounds now (UK only). The British Broadcasting Company’s first daily radio service begins at 6pm on 14 November. The broadcast begins with the words: “This is 2LO calling” (2LO ...

In 1920, a vinyl record cost about $1. Most people listened to music on the radio at that time, however, since the gramophone required to play that $1 record cost about $30 — too much for many ...