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The stations owned by manufacturers and department stores were established to sell radios and those owned by newspapers to sell papers and express the opinions of the owners. 31 August 1920: The first known radio news program was broadcast by station 8MK, the unlicensed predecessor of WWJ (AM) in Detroit, Michigan.
Pages in category "Radio during World War I" The following 2 pages are in this category, out of 2 total. This list may not reflect recent changes. R.
The early history of radio is the history of technology that produces and uses radio instruments that use radio waves. Within the timeline of radio, many people contributed theory and inventions in what became radio. Radio development began as "wireless telegraphy". Later radio history increasingly involves matters of broadcasting.
Radio broadcasting has been used in the United States since the early 1920s to distribute news and entertainment to a national audience. In 1923, 1 percent of U.S. households owned at least one radio receiver, while a majority did by 1931 and 75 percent did by 1937.
With most of the American amateur radio operators in the armed forces at this time, the US government created the War Emergency Radio Service which would remain active through 1945. After the War the amateur radio service began operating again, with many hams converting war surplus radios, such as the ARC-5, to amateur use.
The year 1917 in radio involved some significant events. Events. 6 April – The United States enters World War I and by presidential order all the country's radio ...
Use of the Eiffel Tower as a listening station to intercept wireless telegraphy (French: télégraphie sans fil T.S.F.) 1914 British radio listening station from the Second World War, equipped with the National HRO shortwave radio receivers The radomes of listening station RAF Menwith Hill, England, often referred to as "golf balls", protect the parabolic antennas from the weather.
The RCA model R7 Superette superheterodyne table radio. This is a list of notable radios, which encompasses specific models and brands of radio transmitters, receivers and transceivers, both actively manufactured and defunct, including receivers, two-way radios, citizens band radios, shortwave radios, ham radios, scanners, weather radios and airband and marine VHF radios.