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FM Radio Broadcasting History with Useful Information

admin | July 9, 2017

The first Radio audio broadcast invented incorporation with electric detection and amplification devices on a Christmas Eve in 1906 by Reginald Fessenden (however it is disputed). Afterward, till date, a huge innovation and growth in technology took place in this industry and now we are living in FM radio broadcasting era.

History of FM Radio Broadcasting

On a day of June 17, 1936, FM radio was demonstrated to the FCC for the first time in the history. However, as per long distanced relay broadcast is concerned, it actually invented by Edwin H. Armstrong on January 5, 1940, via 5 stations in different states. At that point of time, FM radio was assigned 42 to 50 MHz bands of the spectrum.

What is FM Radio?

Frequency modulation (FM) is actually how the FM radio broadcasts where the amplitude modulation (AM) is the technique used by AM radio stations.

In telecommunications language, the signal processing, frequency modulation (FM) is the encoding of information in a carrier wave by varying the instantaneous frequency of the wave. This contrasts with amplitude modulation (AM), in which the amplitude of the carrier wave varies, while the frequency remains constant.

What is Frequency in FM Radio?

Frequency deviation means in FM radio to describe the maximum difference between an FM modulated frequency and the nominal carrier frequency. However, the term often mistakenly used as synonymous with frequency drift, which is an unintended offset of an oscillator from its nominal frequency.

Frequencies and Bands of FM and AM Radio

The frequencies range of Amplitude Modulated (AM radio) carrier frequencies are 535-1605 kHz along with Carrier frequencies of 540 to 1600 kHz are assigned at 10 kHz intervals. Where the FM radio bands are assigned the frequencies from 88 to 108 MHz, between VHF television Channels 6 and 7.

Is FM Radio is Better than AM Radio?

Yes of course it is. In FM, a radio wave is known as the “carrier” or “carrier wave” is modulated in frequency by the signal that is to be transmitted. Besides this, FM radio is less prone to interference than AM radio. However, FM radio signals are impacted by physical barriers but FM has better sound quality as compared to AM due to higher bandwidth.

FM is less susceptible to outdoor interference (e.g., thunderstorms, nearby machinery) as compared to AM. These type of noises generally affects the amplitude of a radio wave but not its frequency, so an FM signal remains virtually unchanged. FM radio is also better able to transmit sounds in stereo than AM radio.

Thus, we can say that the future belongs to FM. If you want to be a part of a huge FM network. We are here to help you in this regard. Let us know by visiting and dropping your credentials over World Live FM and we will get back to you in a while.

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