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FM broadcasting is a method of radio broadcasting that uses frequency modulation (FM) of the radio broadcast carrier wave. Invented in 1933 by American engineer Edwin Armstrong , wide-band FM is used worldwide to transmit high-fidelity sound over broadcast radio .
Therefore, in effect, the FM broadcast band comprises only FM channels 201 (88.1 MHz) through 300 (107.9 MHz). Originally, FM stations in a market were generally spaced four channels (800 kHz) apart. This spacing was developed in response to problems perceived on the original FM band, mostly due to deficiencies in receiver technology of the time.
The FM broadcast band is a range of radio frequencies used for FM broadcasting by radio stations. The range of frequencies used differs between different parts of the world. The range of frequencies used differs between different parts of the world.
Chas. A. Alicoate, ed. (1957), "Amplitude Modulation Stations - AM: Florida", Radio Annual and Television Yearbook, New York: Radio Daily Corp., OCLC 10512206 – via Internet Archive "United States AM Stations: Florida" , Yearbook of Radio and Television , New York: Radio Television Daily, 1964, OCLC 7469377 – via Internet Archive + FM ...
The radio spectrum is the part of the electromagnetic spectrum with frequencies from 3 ... FM broadcasts, television broadcasts, cable television broadcasting, ...
An American FM radio transmitter in Buffalo, NY at WEDG. Edwin Howard Armstrong (1890–1954) was an American electrical engineer who invented wideband frequency modulation (FM) radio. [12] He patented the regenerative circuit in 1914, the superheterodyne receiver in 1918 and the super-regenerative circuit in 1922. [13]
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