1920 in radio

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… 1910 ^. 1911 ^. 1912 ^. 1913 ^. 1914 ^. 1915 ^. 1916 … 1917 1918 1919 -1920- 1921 1922 1923 … 1924 ^. 1925 ^. 1926 ^. 1927 ^. 1928 ^. 1929 ^. 1930 … In television: 1917 1918 1919 -1920- 1921 1922 1923 In music: 1917 1918 1919 -1920- 1921 1922 1923 In film: 1917 1918 1919 -1920- 1921 1922 1923
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The year 1920 saw a number of significant events in radio broadcasting.

Events

A number of volunteer radio stations, often run by amateurs, are already broadcasting in the United States.
In January the first informal and spasmodic broadcasts in Great Britain are made by the Marconi Company from Chelmsford. These broadcasts include both speech and music.^[1]
Radio 2XG (see 1919) is forced to close down after Lee De Forest moves the station from the Bronx (where it was licensed) to Manhattan (where it was not).^[1]
23 February to 6 March – The Marconi Company broadcasts from Chelmsford a series of 30-minute shows repeated twice daily. These include live music performances.^[1]
15 June Dame Nellie Melba is the first professional artiste to broadcast in Britain.^[1]
20 August – Station 8MK in Detroit is the first in the world to broadcast news bulletins. The news in compiled from reports supplied by the Detroit News.^[1]
27 August – Sociedad Radio Argentina airs a live performance of Richard Wagner's opera Parsifal from the Teatro Coliseo in Buenos Aires. Only about twenty homes in the city have a receiver with which to tune in to the broadcast.
November: The broadcasts from Chelmsford cease after it is claimed they interfere with aircraft and ship communications.^[1] (See also 1922)

November 2: KDKA (in Pittsburgh, PA) begins broadcasting as the first commercial radio station in the United States.