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.

 A law sets up military censorship in Spain.  There are 650 Radio transmitters and 26 million radio receivers in the U.S.A.  30 October: Orson Welles's programme based on H.G. Wells's War of the Worlds's broadcast on CBS and sows panic among thousands of radio listeners .

 Preparation of the recital by the Italian tenor Enrico Caruso was broadcasted from NYC Enrico Caruso was an Italian operatic first lyric tenor then dramatic tenor. He sang to great acclaim at the major opera houses of Europe and the Americas, appearing in a wide variety of roles that ranged from the lyric to the dramatic.

Reginald Fessenden (U.S.A.) constructs a high-frequency alternator and succeeds in transmitting the human voice via radio. 25 October: Lee de Forest (U.S.A.) applies for a patent on the triode, a 3-electrode valve that make possible the detection, transmission and amplifications of radio signals .

  First experiments with telegraphic radio links in Spain. In France a commercial maritime radio network is set up under the control of the Ministry of Posts and Telegraphs. John fleming (U.K.) invents the thermionic two-electrode valve , or diode making possible sound transmission. A radiotelegraphy station is build on the Adriatic coast in the Principality of Montenegro.