On 6/30/07 7:31 PM, in article f673m1$9v1$1@nnrp.linuxfan.it, "John Smith I"
<assemblywizard@gmail.com> wrote:

> Radium wrote:
>
>> ...
>> If a carrier signal varies by anything other than just amplitude, then
>> it isn't AM. Right?
>>
>
> Let logic be your guide, again. As was pointed out earlier, the voice
> freqs which modulate the carrier will cause a variance in freq (a small
> fm component.)

This will not happen in a properly designed transmitter. It is not a
characteristic of AM.
>
> In fm, it is not unusual for a small "amplitude modulation" to be
> generated, as the varying/spanning of freq(s) is caused by the
> modulation, some changes in fm carrier can be generated.
>
> In an imperfect world, nothing is "perfect."
>
> Regards,
> JS