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What is the meaning of the term center frequency in FM broadcasting?
Wiki User
∙ 11y ago
The intuitive picture of FM is a process of changing the frequency of the
radio wave in some fashion to correspond to the information wave. That's
why it's called "Frequency Modulation".
So when there's no sound on the FM station, let's say, the frequency is exactly
the number that shows on the radio dial ... let's say 101.7 MHz for example.
But when there's information being added to the radio station's signal, such as the
sound of voice or music, it's done by rapidly swinging the frequency of the signal
above and below 101.7 ... something like through the range of 101.625 to 101.775 MHz.
Your FM receiver knows how to read these up-and-down frequency swings, and
how to use them to reconstruct sounds.
The "center frequency" is the frequency of the radio signal when there's no
sound added to it and it's not being wiggled up and down. It's the number
on the radio dial, and it's also called the "carrier frequency".
Wiki User
∙ 11y ago
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