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The first shortwave station in Europe. 25 June 1926 (test transmissions began), and the first shortwave station in the world with its own dedicated programming rather than being a simulcast of an AM/MW or LW station such as KDKA. Regular broadcast from 30 May 1927 to May 1940 when the station went dark due to the German occupation of Holland ...
Milestones in radio: the first half century (1895–1945). The UNESCO courier (February 1997), p. 16–21; Radio Review/Radio Listeners Guide (1925–1929), Broadcasting Yearbook (1935–2010), World Radio TV Handbook (1947–) Berg, Jerome S. The early shortwave stations: a broadcasting history through 1945 (2013) radioheritage.net
FM uses frequency modulation of the radio wave to minimize static and interference from electrical equipment and the atmosphere, in the audio program. 1937: W1XOJ, the first experimental FM radio station after Armstrong's W2XMN, was granted a construction permit by the U.S. Federal Communications Commission (FCC).
The first commercial AM Audion vacuum tube radio transmitter, built in 1914 by Lee De Forest who invented the Audion in 1906 During the mid-1920s, amplifying vacuum tubes revolutionized radio receivers and transmitters .
The first radio station in Germany went on the air in Berlin in late 1923, using the call letters "LP." [34] Before 1933, German radio broadcasting was conducted by 10 regional broadcasting monopolies, each of which had a government representative on its board. The Post Office provided overall supervision.
Popov presented his radio receiver to the Russian Physical and Chemical Society on 7 May 1895 — the day has been celebrated in the Russian Federation as "Radio Day" promoted in eastern European countries as the inventor of radio. [89] [90] [91] The paper on his findings was published the same year (15 December 1895).
Guglielmo Giovanni Maria Marconi [11] [12] was born in Palazzo Marescalchi in Bologna on 25 April 1874, the second son of Giuseppe Marconi (an Italian aristocratic landowner from Porretta Terme who lived in the countryside of Pontecchio) and his Irish wife Annie Jameson (daughter of Andrew Jameson of Daphne Castle in County Wexford, sister of Scottish naturalist James Sligo Jameson, and ...
2 January – The BBC broadcasts The Daily Service – a 15-minute act of Christian worship – for the first time, from its Savoy Hill studios in London. The programme will still be broadcast five mornings a week on BBC Radio 4 (LW) as of 2020. [2] 30 January – First radiotelephone connection between the Netherlands and the United States. [3]