The old-time radio era, sometimes referred to as the Golden Age of Radio, was an era of radio programming in the United States during which radio was the dominant electronic home entertainment medium. It began with the beginning of radio broadcasting in the early 1920s and lasted until the 1950s, when television superseded radio as the medium of choice for scripted programming. During this period radio was the only broadcast medium, and people regularly tuned into their favourite radio programs, and families gathered to listen to the home radio in the evening. According to a 1947 C. E. Hooper survey, 82 out of 100 Americans were found to be radio listeners. A variety of formats and genres were created for the new medium, many of which later migrated to television: radio plays, mystery serials, soap operas, quiz shows, talent shows, variety hours, situation comedies, children's shows, cooking shows. Since this era, radio programming has shifted to a more narrow format of news, talk, sports and music.
The broadcasts of live drama, comedy, music and news that characterize the Golden Age of Radio had a precedent in the Théâtrophone, commercially introduced in Paris in 1890 and available as late as 1932. It allowed subscribers to eavesdrop on live stage performances and hear news reports by means of a network of telephone lines. The development of radio eliminated the wires and subscription charges from this concept.
On Christmas Eve 1906, Reginald Fessenden is said to have broadcast the first radio program, consisting of some violin playing and passages from the Bible. While Fessenden's role as an inventor and early radio experimenter is not in dispute, several contemporary radio researchers have questioned whether the Christmas Eve broadcast took place, or whether the date was in fact several weeks earlier. The first apparent published reference to the event was made in 1928 by H.P. Davis, Vice President of Westinghouse, in a lecture given at Harvard University. In 1932 Fessenden cited the Christmas Eve 1906 broadcast event in a letter he wrote to Vice President S.M. Kinter of Westinghouse. Fessenden's wife Helen recounts the broadcast in her book Fessenden: Builder of Tomorrows (1940), eight years after Fessenden's death. The issue of whether the 1906 Fessenden broadcast actually happened is discussed in Donna Halper's article "In Search of the Truth About Fessenden" and also in James O'Neal's essays. An annotated argument supporting Fessenden as the world's first radio broadcaster was offered in 2006 by Dr. John S. Belrose, Radioscientist Emeritus at the Communications Research Centre Canada, in his essay "Fessenden's 1906 Christmas Eve broadcast."