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The story of wireless communication began at the turn of the twentieth century with experimental transmission of Morse code over the airwaves, often credited to Italian scientist Guglielmo Marconi, although radio's actual inventor is debatable. Between the 1900s and the 1920s radio was used by the military, engineers and hobbyists. In San Jose an engineer named Doc Herrold was perhaps the first person to ever accomplish a radio transmission featuring the human voice as early as 1909.

Radio began to grow as a commercial medium in the 1920s and became very much a part of everyday lifestyle trough the Great Depression years. Radio was eclipsed by television in the 1950s, but the advent of affordable transistor pocket radio, affordable to the teen market, gave radio a new life. FM radio began to gain significant audiences in the late 1960s and had completely taken over mainstream music by the early 1980s. The Telecom Act of 1996 transformed radio into big business, although its heyday seemed to culminate in the 1990s as the next decade offered a wider range of choices for the consumer through new media, overshadowing radio.

For a deeper look at American Radio History visit Playlist Research.