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On February 17, 1919, station 9XM at the University of Wisconsin in Madison broadcast human speech to the public at large. 9XM was first experimentally licensed in 1914, began regular Morse code transmissions in 1916, and its first music broadcast in 1917. Regularly scheduled broadcasts of voice and music began in January 1921.
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.
The War of the Worlds radio broadcast by Orson Welles on electrical transcription disc. Before the early 1950s, when radio networks and local stations wanted to preserve a live broadcast, they did so by means of special phonograph records known as "electrical transcriptions" (ETs), made by cutting a sound-modulated groove into a blank disc. At ...
The first national live television broadcast in the U.S. took place on September 4, 1951, when President Harry Truman's speech at the Japanese Peace Treaty Conference in San Francisco was transmitted over AT&T's transcontinental cable and microwave radio relay system to broadcast stations in local markets.
Shipping forecasts were first broadcast by telegraph in 1859 and the first radio broadcast in the current format was broadcast in 1924. [4] [5] Grand Ole Opry: 99 67 by Jimmy Dickens: WSM: 28 November 1925 Over 5,000 Live country music [6] Choral Evensong: 98 BBC: 7 October 1926 Longest running live outside broadcast programme in radio history.
The next year the company used the same concept to begin establishing the first radio network. [107] The WEAF and WJZ chains. At the same time in early 1922 that it announced the beginning of advertisement-supported broadcasting, AT&T also introduced its plans for the development of the first radio network. [104]
1916: First regular broadcasts on 9XM (now WHA) – Wisconsin state weather, delivered in Morse Code; 1919: First clear transmission of human speech, (on 9XM) after experiments with voice (1918) and music (1917). 1920: Regular wireless broadcasts for entertainment began in Argentina, pioneered by the group around Enrique Telémaco Susini.
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