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An antique radio is a radio receiving set that is collectible because of its age ... Radio sets from before 1920 are rarities, and are probably military artifacts.
The earliest radio programs of the 1920s were largely unsponsored; radio stations were a service designed to sell radio receivers. In early 1922, American Telephone & Telegraph Company (AT&T) announced the beginning of advertisement-supported broadcasting on its owned stations, and plans for the development of the first radio network using its ...
The first radio transmitters could not transmit audio (sound) like modern AM and FM transmitters, and instead transmitted information by radiotelegraphy; the transmitter was turned on and off rapidly using a switch called a telegraph key, creating different length pulses of radio waves ("dots" and "dashes") which spelled out text messages in Morse code.
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.
Crystal radio used as a backup receiver on a World War II Liberty ship. While it never regained the popularity and general use that it enjoyed at its beginnings, the crystal radio circuit is still used. The Boy Scouts have kept the construction of a radio set in their program since the 1920s. A large number of prefabricated novelty items and ...
1920 in radio details the internationally significant events in radio broadcasting for the year 1920. Events. January The first informal and spasmodic broadcasts ...
About 5,000 artifacts — ranging from clothes to jewelry, furniture to toys, weapons to cosmetics — were found in the tomb, the ministry said. Many of these artifacts now reside in The Egyptian ...
1920s radio programs (4 C) This page was last edited on 28 April 2020, at 09:36 (UTC). Text is available under the Creative Commons Attribution-ShareAlike 4. ...
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