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Eugene Polley (November 29, 1915 – May 20, 2012) was an electrical engineer and engineering manager for Zenith Electronics who invented the first wireless remote control for television. Life and career
the first to introduce push-button car radios [24] introduced soap operas to radio broadcasts [37] introduced the first non-electric refrigerator (Icyball) [citation needed] introduced the first refrigerator with shelves in the door (Shelvador) [15] launched the world's most powerful commercial radio station (WLW, at 500 kW) [12]
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.
Live radio is sound transmitted by radio waves, as the sound happens. Modern live radio is probably [original research?] most used to broadcast sports but it is also used to transmit local news and traffic updates. Most radio that people listen to today is pre-recorded music, and the days of solely live broadcast music are generally not as present.
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.
By the 1929 model year, Philco was in third place behind Atwater Kent and Majestic (Grigsby-Grunow Corp) in radio sales. In 1930, the company sold 600,000 radios, grossed $34 million, and was the leading radio maker in the country. By 1934, they had captured 30% of the domestic radio market. [9] A Philco 90 "cathedral" style radio from 1931
The timeline of radio lists within the history of radio, the technology and events that produced instruments that use radio waves and activities that people undertook. Later, the history is dominated by programming and contents, which is closer to general history .
Multiple walkie-talkies use a single radio channel, and only one radio on the channel can transmit at a time, although any number can listen. The transceiver is normally in receive mode; when the user wants to talk they must press a "push-to-talk" (PTT) button that turns off the receiver and turns on the transmitter. Some units have additional ...