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Radio is the use of radio waves to carry information, such as sound, by systematically .... An audio signal (top) may be carried by an AM or FM radio wave.

A Science Odyssey: Radio Transmission: FM vs AM - PBS


FM radio works the same way that AM radio works. The difference is in how the carrier wave is modulated, or altered. With AM radio, the amplitude, or overall ...

AM vs FM - Difference and Comparison | Diffen


In FM, a radio wave known as the "carrier" or "carrier wave" is modulated in frequency by the signal that is to be transmitted. The amplitude and phase remain the ...

Radio and digital radio | How it works | AM and FM compared


Sep 5, 2015 ... Artwork: How radio waves travel from a transmitter to a receiver. ... Frequency modulation is how FM radio is broadcast; amplitude modulation is ...

Difference between AM and FM | AM vs FM Modulation


In radio communication, the message signal wave (low frequency) is combined ... Moreover, noise signals are difficult to filter out in AM reception whereas FM ...

modulation - What is the basic difference between AM and FM radio ...


Sep 3, 2012 ... Why nowadays FM radio has replaced AM and has become more .... a radio carrier wave. frequency modulation (FM) conveys information over ...

What Are Radio Waves? - Live Science


Apr 6, 2015 ... Radio waves are a type of electromagnetic radiation. ... HF, VHF and UHF bands include FM radio, broadcast television sound, public service ...

Illumin - Catch a Wave: Radio Waves and How They Work


Nov 17, 2000 ... Exploring the phenomenon of radio waves will make you more aware of ... From this you can see that both AM and FM radio use modulation to ...

Radio Waves - Boundless


There is a wide range of subcategories contained within radio including AM and FM radio. Radio waves can be generated by natural sources such as lightning ...

How the Radio Spectrum Works | HowStuffWorks


AM radio, FM radio, CB radio... These are all different chunks of the radio spectrum. Find out about the thousands of different uses for radio waves!

More Info

FM Radio - HyperPhysics


Radio communication is typically in the form of AM radio or FM Radio ... frequencies which are produced by superposition of some signal upon the carrier wave.

AM, FM Radio Waves and Sound - CyberCollege


May 28, 2013 ... Note in the tan area at the left of the illustration below that AM radio waves are of a lower frequency than either FM radio or TV waves. Thus, as ...

What is the difference between FM and AM radio? - Quora


The simplicity of the technology made it easy to build radio receivers in great ... FM signals usually drop of at around 50 miles from the station, but AM waves can  ...