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Showing posts with the label Wireless telegraphy

Year 1932.

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The International Telecommunication Union ( ITU ) succeeds the InternationalTelegraph Union , founded in 1865.  Radio transmission services played a leading role in the U.S. presidential election campaign (Hoover vs Roosevelt). At the end of the Year 1932, Radio moscow headquarters opens it's doors.

Year 1897.

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 Eugène Ducretet (France) experiments with wireless telegraphy ; Guglielmo   Marconi founds the Wireless Telegraph and Signal Company Ltd ., in London. Karl Ferdinand Braun (Germany) invents a device which completes '' the tuned circuit '', matching the wavelengt of transmitter and receiver, a procedure discovered by Sir Oliver Lodge (U.K.).