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History of radio. 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 ...
Golden Age of Radio. Girl listening to vacuum tube radio during the Great Depression. Prior to the emergence of television as the dominant entertainment medium in the 1950s, families gathered to listen to the home radio in the evening. The Golden Age of Radio, also known as the old-time radio ( OTR) era, was an era of radio in the United States ...
1920s: Radio was first used to transmit pictures visible as television. 1926: Official Egyptian decree to regulate radio transmission stations and radio receivers. [40] Early 1930s: Single sideband (SSB) and frequency modulation (FM) were invented by amateur radio operators. By 1940, they were established commercial modes.
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. [ 1][ 2] It was the first electronic "mass medium" technology, and its ...
1 April – The 1930 United States Census is the first in that country's history to require households to report the ownership of a radio-receiving set. 18 April – BBC radio listeners uniquely hear the announcement "Good evening. Today is Good Friday. There is no news."
AM broadcasting. AM broadcasting is radio broadcasting using amplitude modulation (AM) transmissions. It was the first method developed for making audio radio transmissions, and is still used worldwide, primarily for medium wave (also known as "AM band") transmissions, but also on the longwave and shortwave radio bands.
The fireside chats were a series of evening radio addresses given by Franklin D. Roosevelt, the 32nd President of the United States, between 1933 and 1944.Roosevelt spoke with familiarity to millions of Americans about recovery from the Great Depression, the promulgation of the Emergency Banking Act in response to the banking crisis, the 1936 recession, New Deal initiatives, and the course of ...
The radio broadcasting of music and talk intended to reach a dispersed audience started experimentally around 1905–1906, and commercially around 1920 to 1923. VHF (very high frequency) stations started 30 to 35 years later. In the early days, radio stations broadcast on the longwave, mediumwave and shortwave bands, and later on VHF ( very ...