Cingular cell phone service - Re: AM electromagnetic waves: 20 KHz modulation frequency onanastronomically-low carrier frequency

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Re: AM electromagnetic waves: 20 KHz modulation frequency onanastronomically-low carrier frequency

Ron Baker, Pluralitas!

2007-07-05, 4:33 am

"Don Bowey" <dbowey@comcast.net> wrote in message
news:C2B16AE5. 6D5BC%dbowey@comcast
.net...
> On 7/4/07 10:16 AM, in article 468bd5ad$0$16531$4c3
68faf@roadrunner.com,
> "Ron Baker, Pluralitas!" <this@aint.me> wrote:
>
>
> When AM is correctly accomplished (a single voiceband signal is modulated

The questions I posed were not about AM. The
subject could have been viewed as DSB but that
wasn't the specific intent either.

> onto a carrier via a non-linear process), at an envelope detector the two
> sidebands will be additive. But if you independe ntly place a carrier at
> frequency ( c ), another carrier at ( c-1 khz) and another carrier at (c+
> 1
> kHz), the composite can look like an AM signal, but it is not, and only by
> the most extreme luck will the sidebands be additive at the detector.
> They
> would probably cycle between additive and subtractive since they have no
> real relationship and were not the result of amplitude modulation.
>

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