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AM means Amplitude(=height) modulation, so the frequency stays the same and the message is coded into variations of the strength of the signal.

FM stands for Frequency modulation. Here the strength of the signal stays the same and the message is coded into changes in frequency instead.

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Gennaro Schmeler

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2y ago
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14y ago

In AM the amplitude of the carrier signal is modulated according to the amplitude of the signal to transmitted but in FM the frequency of the carrier is changed without any change in amplitude of the carrier.

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12y ago

AM stands for amplitude modulation, and FM stands for frequency modulation. As a wave, they are essentially the same, but they differ in the way that a radio receives them. For an AM radio, the sound is played based on the amplitude of the wave, while with FM radios, the wave is read for slight changes in frequency. These changes are what create the sound that is played.

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12y ago

AM means Amplitude(=height) modulation, so the frequency stays the same and the message is coded into variations of the strength of the signal.

FM stands for Frequency modulation. Here the strength of the signal stays the same and the message is coded into changes in frequency instead.

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Q: What is the difference between FM and AM radio waves?
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What are FM waves?

FM radio uses frequency modulation to broadcast sound over radio. FM radio waves are usually transmitted between 87.5 to 108.0 megahertz.


What are the differences between AM and FM waves?

There is no fundamental difference in the waves. It so happens that in the USA, commercial AM radio broadcasts in a frequency band around 1 MHz, and FM radio broadcasts in a band around 100 MHz, so their frequencies and wavelengths are different. But that has nothing to do with being AM or FM waves. The codes used to manipulate the waves in order to make them carry information are different for AM and FM, but there's no physical difference in the waves themselves.


What are the differences between AM and FM radio?

The main difference between AM and FM radio is the dial-in number and the amount of static each receive. AM radio preceded FM radio, with FM becoming popular in the 1950s.


Difference between satellite radio and regular radio?

One of the main differences between satellite radio and FM radio is that there is a cost for satellite and FM is free. Satellite radio also does not operate using the same numerical AM and FM channels as FM radio.


Which waves carries AM and FM signals?

Radio waves


Which has a higher frequencies am radio waves or fm radio waves?

FM radio has the higher frequency which is why it sounds better. AM is a lower frequency but can travel further because the waves bounce off


What is the frequency of radio wave?

Fm radio waves travel at various frequencies between 87.5 MHz and 108.0 MHz


What transverse wave may be AM or FM?

AM and FM are modulation types, that can probably be used for different kind of waves; but they are usually applied to radio waves. Radio waves are a kind of electromagnetic waves.


What is the use of radio waves?

hearing FM and am news in radio


AM radio waves are able to traves farther than FM radio waves because?

AM waves are reflected by earth's ionosphere


What has a greater frequency am waves or FM waves?

FM waves are of higher frequency than am waves.AM radio ranges from 535 to 1705 kilohertzFM radio ranges in a higher spectrum from 88 to 108 megahertz.


Why do mountains interfere with FM radio reception?

FM radio works like light. If a shadow is made (something in the way) , you get less light. Radio waves work in a straight line. If something is in the way, less radio waves. The rule is broken here if you use Am radio waves. Low clouds can make the waves bounce between the clouds and the ground and can travel as far as 1000 miles or further. So the answer is yes.