what does fm mean on the radio
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The Electromagnetic Spectrum AM stands for amplitude modulation, which means the amplitude of the radio signal is used to encode information. FM denotes frequency modulation, which uses a change in frequency to encode information. From this you can see that both AM and FM radio use modulation to encode information. Modulation is the variation of some property of the radio carrier in a manner that conveys information [1].
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- In general, FM radio refers to radio that is broadcast using FM, or frequency modulation, as its modulation scheme. Frequency modulation is the shifting of the frequency of th…e transmitted signal above and below an assigned center frequency or carrier frequency to impress the signal on the carrier.
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- 1 radio-is attached to roots and nouns and means radiant energy'': radiometer. 2  radio-is also used to mean radio waves'': radiolocation; radiotelephone. 3  radio-is also used to mean the giving off of rays as a result of the breakup of atomic nuclei'': radioactivity; radiocarbon.
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Why Musicians Want Radio Stations to Start Paying Them Despite the onslaught of new ways to listen to music, AM/FM radio still wields incredible clout, with 243 million Americans tuning in weekly. That massive audience means the medium is still the best way by far for artists to debut and promote new music, radio station advocates argue.
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FREQUENCY MODULATION • FREQUENCY MODULATION (noun). The noun FREQUENCY MODULATION has 1 sense: 1. modulation of the frequency of the (radio) carrier wave. Familiarity information: FREQUENCY MODULATION used as a noun is very rare. FREQUENCY MODULATION (noun). The noun FREQUENCY MODULATION has 1 sense: 1. modulation of the frequency of the (radio) carrier wave. Familiarity information: FREQUENCY MODULATION used as a noun is very rare.
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Simple Radio - Free Live FM AM Item removed from wishlist. Simple Radio by Streema is the simplest way of listening to your favorite FM Radio stations, AM Radio, Internet Radio Online and Free radio stations. With over 30,000 stations, you can listen to the ones you’ve learned to love, or sit back and discover new gems from any region of the world.
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CFBU-FM Alternative Radio. Alternative Radio is an unembedded weekly one-hour public affairs program offered free to all public radio stations in the US, Canada, Europe, South Africa, Australia, and on short-wave on Radio for Peace International. AR provides information,...
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FM Radio Broadcast Going further with the details on FM radio broadcast, we come up with the point that for accommodating an audio signal in FM radio, it does not require a bandwidth of 200 kHz. What is all required is 20 kHz to 30 kHz for a narrowband FM radio broadcast or FM signal. The 200 kHz bandwidth enabled space for ±75 kHz signal deviation from the appointed frequency. Moreover, guard bands for minimizing or eliminating adjacent channel interference.
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AM, FM Waves The term modulation refers to how sound is encoded on a radio wave called a carrier wave; or, more accurately, how the sound affects the carrier wave so that the original sound can later be detected by a radio receiver. In the top-left of this drawing the RF energy (carrier wave) is not modulated by any sound.
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How the Radio Spectrum Works Megahertz means millions of cycles per second, so 91.5 megahertz means that the transmitter at the radio station is oscillating at a frequency of 91,500,000 cycles per second. Your FM (frequency modulated) radio can tune in to that specific frequency and give you clear reception of that station.All FM radio stations transmit in a band of frequencies between 88 megahertz and 108 megahertz.his band of the radio spectrum is used for no other purpose but FM radio broadcasts. In the same way, AM radio is confined to a band from 535 kilohertz to 1,700 kilohertz (kilo meaning thousands, so 535,000 to 1,700,000 cycles per second).
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- 1 Radio and Television[uncountable] a system of communicating speech or other sounds by sending electromagnetic waves of a particular frequency range over long distances. 2  Radio and Television[countable] a device for receiving or sending radio broadcasts.
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radio frequency radio frequency. n. 1. (Telecommunications). a. a frequency or band of frequencies that lie in the range 10 kilohertz to 300 000 megahertz and can be used for radio communications and broadcasting. Abbreviations: rf or RF See also frequency band. b. (as modifier): a radio-frequency amplifier.
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"What is the difference between ""FM/MW/LW"" and ""Frequency"" in radio stations?" Best Answer: FM is frequency modulation, that is the information is sent by varying the frequency (the wave amplitude never changes.) MW (medium wave) and LW (long wave) are AM (amplitude modulation) - the information is sent by varying the amplitude, but keeping the frequency the same.M broadcasting is in the 88-108 MHz band. AM (Amplitude Modulation) is typically used at frequencies below VHF (but not limited to that). AM radio amplitude modulates the carrier signal. AM broadcast radio operates in the 500 KHz - 1.5 MHz frequency band.
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- FM (Frequency Modulation) is the same modulation used by the FM radio in your car, which makes it easier to remember. Note that regular FM radio broadcast stations (music, talk radio, etc) use what is commonly known as Wide FM, whereas ham radio generally uses Narrow FM which uses less bandwidth (about 5-15kHz).
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frequency Earlier it had been used in a now-obsolete sense of state of being crowded (mid-16c.); sense in physics, rate of recurrence, especially of a vibration, is from 1831. In radio electronics, frequency modulation (1922, abbreviated F.M.) as a system of broadcasting is distinguished from amplitude modulation (or A.M.).
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radio-frequency Medical Definition of radio frequency. : any of the electromagnetic wave frequencies that lie in a range extending from below 3 kilohertz to about 300 gigahertz and that include the frequencies used for communications signals (as for radio and television broadcasting and cell-phone transmissions) or radar signals.
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Frequency modulation In telecommunications and 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, in which the amplitude of the carrier wave varies, while the frequency remains constant.
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FM broadcasting Frequency Modulation. FM broadcasting is a broadcast technology invented by Edwin Armstrong that used Frequency Modulation (FM) to provide high fidelity sound over broadcast radio. Frequency Modulated and Amplitude Modulation :) The way a signal is transmitted.
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Radio Classic radio receiver dial. Radio is the technology of using radio waves to carry information, such as sound, by systematically modulating properties of electromagnetic energy waves transmitted through space, such as their amplitude, frequency, phase, or pulse width.
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How HD Radio Works How HD Radio Works. The radio waves that carry analog AM and FM signals are limited in the amount of information they can convey, both because of the nature of the waves themselves and the spacing of stations on the frequency band. FM stations are separated by 200 kHz, while AM stations have just 10 kHz between them. Alternate channel spacing of FM stations gives them 400 kHz to work with. The signals broadcast by radio stations are actually spread out on either side of the frequency into Upper and Lower Sidebands (USB and LSB).
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- Sometimes we talk about FM radio as those broadcast frequencies between about 88 MHz and 108 MHz on the electromagnetic spectrum. This is often what the term means, but as FM is a way to put information on a carrier, that type of modulation could be used on just about any signal you'd care to apply it to. Certainly communications and amateur radio use it frequently on frequencies outside the so-called FM broadcast band.
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- Here's a quick tour of a radio station from Studio to the Tower. The difference between an FM radio station and an AM radio station. In quick simple, easy to understand terms.
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Radio Sometimes a radio program is added to the carrier in such a way that the program signal causes fluctuations in the carrier's frequency. This is called frequency modulation (FM). Another way of sending a radio signal is to make the peaks of the carrier wave bigger or smaller.
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FM broadcasting The FM broadcast band is also used by some inexpensive wireless microphones sold as toys for karaoke or similar purposes, allowing the user to use an FM radio as an output rather than a dedicated amplifier and speaker.
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Shortwave radio Shortwave radio is radio transmission using shortwave frequencies, generally 1.6–30 MHz (187.4–10.0 m), just above the medium wave AM broadcast band.
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Radio frequency Although radio frequency is a rate of oscillation, the term radio frequency or its abbreviation RF are used as a synonym for radio – i.e., to describe the use of wireless communication, as opposed to communication via electric wires. Examples include: 1  Radio-frequency identification.