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Timeline of Milestones in Communications History, 1920s

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ComSoc History
Communications History Oral Histories Technology Timelines Acronyms

 

Pre-1900 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990...


1920


Westinghouse Radio Station KDKA is established (2 November)

1921

First radio broadcast of a sporting event (Dempsey/Carpentier Heavyweight Championship Prize Fight, 2 July)

1922

Alexander Graham Bell dies at his summer home in Beinn Breagh, near Baddeck, Cape Breton Island, Nova Scotia (2 August). Telephone service is suspended for one minute (6:25pm-6:26pm) on the entire telephone system in the United States and Canada during the funeral service (4 August)

British Broadcasting Corporation (BBC) is formed. (It would receive it's Royal Charter in 1927).

1923

Meetings at New York and Chicago of the American Institute of Electrical Engineers (AIEE) are linked by long distance lines connected to loudspeakers so that both meetings could follow the same program (14 February).

1924

Directive short wave antenna is developed by Professor Hidetsugu Yagi and his assistant, Shintaro Uda.

1925

The Combined Line and Recording (CLR) method of handling toll calls over long distances (100 miles or more) is introduced experimentally by Bell Systems. It reduces the handling of toll calls from 13 minutes (in 1920) to 7 minutes.

1926

The first public test of radiotelephone service from New York to London.

1927

First public demonstration of long distance transmission of television.

Formal opening of telephone service between the US and Mexico, and also, Mexico- London, via New York.

1928

A joint meeting of the AIEE and the British IEE is held over radiotelephone channels, with the respective groups assembled in New York and London.

1929

29 October, the Great Depression

 


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