[AMRadio] AM power


Geoff Edmonson w5omr at att.net
Sun Jun 19 06:16:36 EDT 2011


On 06/18/2011 10:20 PM, Bob Macklin wrote:
> "what you're not getting, Gary, with the proper voltage and everything
> running the way it should on my rig, when I DO hit the same point on
> positive voice peaks as the single-tone, the negative peaks aren't
> anywhere -near- the baseline of the carrier.  That is -not- 100%
> modulation."
>
> Sounds like you have a modulator problem.
>
> A properly deigned AM PLATE modulator will produce very clean 100% upward
> and downward modulation on a single tone. If it doesn't you have distortion
> in your audio system.
>
> This stuff can only be measured with a tone because the human voice does not
> produce symmetrical waveforms!
>

DING DING DING!  That's EXACTLY the point, Bob!




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