[BC] Frequency Measurements and 1000 Hz tone...

[Ronald J. Dot'o Sr.]

If your carrier freq is 1000kc then the upper sideband  w/1kc mod would be 
1001kc and lower sideband would be 999kc.  1001kc + 999KC = 2000kc.  2000kc 
/ 2 = 1000kc carrier freq.

Ron D


----- Original Message ----- 
From: "Tom Dimeo" <mwam at box311.net>
To: <broadcast at radiolists.net>
Sent: Wednesday, March 21, 2007 14:21
Subject: Re: [BC] Frequency Measurements and 1000 Hz tone...


> I'm really scratching my head over how to use the lower and
> upper sidebands to measure the carrier frequency of an AM
> signal when the carrier is being modulated with a tone.  As I
> understand, if you take the average frequency of the two
> sidebands all you come up with is the frequency of the tone.
> It seems to me that if you know the "exact" frequency of the
> tone then you could do it.
>
> I'm probably missing something real simple.
>
> Tom
>
> ** Message Separater **
>>
>>Glen:
>>
>>> is the exact frequency of the modulation of no import?
>>
>>Not important; take the average of the two sidebands.
>>989 for lower sideband and 991 for upper and it would be
>>easy to "compute" the carrier frequency.
>
>
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