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Frequency range of AM and FM radio???


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4 replies to this topic

#1 of 5 OFFLINE   Mike D.

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Posted April 15 2005 - 10:55 AM

Anyone have the frequency range of AM and FM radio handy? I'm teaching a class on data communications and wanted to compare the 2 with the range of telephone (ie, 300 Hz-3300Hz)..

#2 of 5 OFFLINE   Christ Reynolds

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Posted April 15 2005 - 11:08 AM

AM radio - 535kHz - 1710kHz
FM radio - 87.8 MHz - 108.0 MHz

CJ
And then when I feel so stuffed I can't eat anymore, I just use the restroom! And then I CAN eat more!

#3 of 5 OFFLINE   Mike D.

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Posted April 15 2005 - 12:12 PM

Perfect, thanks!

#4 of 5 OFFLINE   Christ Reynolds

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Posted April 15 2005 - 12:18 PM

no problem!

CJ
And then when I feel so stuffed I can't eat anymore, I just use the restroom! And then I CAN eat more!

#5 of 5 OFFLINE   ChristopherDAC

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Posted April 15 2005 - 05:00 PM

That's the range of the carrier frequencies. If you're interested, the baseband frequency response of AM radio is roughly that of telephony or a little better -- standardised I believe at 50-5000 Hz, and FM being the "high fidelity" medium has a baseband of 30-15 000 Hz. This is for monaural implementations only of course; stereo involves subcarriers and all manner of other oddities. For reference, FM falls in the gap between the television channels 6 and 7 as broadcast in the U.S.