Posted by Brian Gaff on 10/27/07 14:00

Why do you think they used such a wide band fm for radio?

Also there is often pre emphasis to look at as well.

Brian

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Brian Gaff - briang1@blueyonder.co.uk
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"Roderick Stewart" <escapetime@removethisbit.beeb.net> wrote in message
news:VA.0000018f.006be928@removethisbit.beeb.net...
> In article <4722f832$0$25703$4c368faf@roadrunner.com>, Green Xenon
> [Radium] wrote:
>> >>So there is no way to decrease how far the sidebands will go?
>>
>> > With FM? Nope, not in the way you're hoping. Modulate a carrier Fc
>> > with a frequency Fm, and the first sidebands will be at Fc+Fm and
>> > Fc-Fm, just as would be true with AM. That's the narrowest you can
>> > get.
>>
>> So a higher-frequency modulation signal will result in more distant
>> sidebands than a lower-frequency modulation signal? E.g. a 10,000 Hz
>> tone will result in sidebands further from the base carrier frequency
>> than a 1,000 Hz signal?
>
> By George! I think he's got it!
>
> Rod.
>

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