19 February – Ed Wynn becomes the first big vaudeville star to join radio. The first broadcast is Wynn's The Perfect Fool and the station is WJZ, New York. This is also the first time in the world that a radio show is broadcast before a studio audience.[1]
10 March – In the United States, Variety magazine prints as its front-page headline "Radio Sweeping Country - 1,000,000 Sets in Use".[citation needed]
11 May – The first radio sports commentary in Great Britain is made on Station 2LO. Arthur Burrows describes a fight between Ted "Kid" Lewis and Georges Carpentier at Olympia. No further sports broadcasts are made in Britain until 1927 due to pressure from newspapers.[2]
21 July – A limited commercial license is issued for operating radio station WIAE, in Vinton, Iowa, to station manager Marie Zimmerman, making WIAE the first radio station owned and operated by a woman.[3]
22 August – The first national wireless exhibition is held at the Champ de Mars in Paris.[4]
6 November – The privately owned French radio station Radiola begins regular transmissions.[6]
14 November – Broadcasts from the British Broadcasting Company's 2LO become daily and the station transmits its first two news bulletins, each read twice ("once quickly and once slowly" – to determine listener reaction).[7]
15 November – The British Broadcasting Company opens its stations in Birmingham (5IT) and Manchester (2ZY).[citation needed]
4 December – The first broadcasting "music ensemble" is formed in Pittsburgh by that city's KDKA; it will be known as the KDKA Orchestra.[citation needed]
Debuts
9 January – KQV is licensed and on the air in Pittsburgh, the city becomes the first with both a commercial station (KDKA in 1920) and two commercial radio stations.
31 March – WWL begins broadcasting as a 10-watt station. The first program on the air was a piano recital.
10 April – WBT in Charlotte, North Carolina, goes commercial from its former experimental authorization as 4XD (19 December 1920 sign-on) as North Carolina's first commercial radio station.
13 April - WGU, Chicago, Illinois, has its formal opening. The station became WMAQ October 3, 1922.[8]
27 April – WOE is launched by the Buckeye Radio Service Co. in Akron, Ohio.[9]