[ARC5] AM modulating an "ARC-5" transmitter...

[AKLDGUY .]

On Sunday, October 11, 2015, Kenneth G. Gordon <kgordon2006 at frontier.com>
wrote:

> On 11 Oct 2015 at 11:44, AKLDGUY . wrote:
>
> > Surely the peak power is the absolute limit for 100% modulation.
>
> Hmmm....I think I would say, rather, the peak-power-capability of the
> output
> device. Then I would say, "Yes".


Well yes, that's of course what I meant. If I had to spell out everything to
avoid the nit-pickers, I'd be writing a book here. I credited readers with
knowing what I meant.



> > It doesn't matter whether the modulating waveform is a sine wave,
> > speech, square wave, or anything else. Cross that 100% line and
> > you're overmodulating and into the realm of distortion.
>
> Generally correct,  but always so in the negative direction.


Distortion is distortion. There was no need to nit-pick.



> > It's average power, not peak power, that is determined by the
> > modulating waveform.
>
> Well, I would say both are affected by the modulating wave form. To me,
> peak power is more a function of the capability of the amplifier in
> question,
> along with its power supply. One can achieve a certain peak power with any
> mode, even CW, and that peak power is a function of what I stated above,
> and includes drive level, amplifier capability, etc.
>
> Total average power is most definitely and primarily a function of
> waveform.
>
> We may be talking about the same things here, using different viewpoints
> and differing language, but even so, I think I know what you mean. I think
> we
> are agreed.
>
>
Presuming 100% modulation (peak power) in each case for sine wave, speech,
music, square wave, or any other modulation source, it's average power, not
peak power, that is determined by the modulation waveshape.

I think we are agreed. Gosh I've been made to feel like I need to write for
idiots,
instead of crediting readers with the intelligence to see what I'm getting
at.
Is it possible that in my earlier post I talked above the level of
readership here?

73 de Neil ZL1ANM