World Radio Day

23 March : In France, all private radio stations are nationalized by decree and the  state broadcasting monopoly is strengthened.  11 April : The Sarajevo (Yugoslavia) radio station starts broadcasting.  19 May : The Berlin Rundfunk starts broadcasting.  9 June : Radio broadcasting in the Soviet-occupied zone of Germany comes under the control of the Soviet military administration.  15 August : The Emperor of Japan makes his first radio broadcast , announcing his country's capitulation.  10 September : A memorandum on " Freedom ofexpression and freedom of thepress " in Japan abolishes all restrictive laws promulgated under the previous regime.  11 December : A memorandum reorganizes NHK. Government control is abolished and private radio is banned. A committee of representatives of the Japanese people is formed.

 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.).