[Elecraft] What happened to ALC?

[Walter Underwood]

“The modulator” means “the modulator code in the DSP” of course. If the compression is done by RF limiting, I expect that is also done in the DSP.

The ALC you are describing is transmitter gain ALC. That is different from audio gain ALC.

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Jan 31, 2022, at 12:07 PM, Andy Durbin <a.durbin at msn.com> wrote:
> 
> "If so, the ALC would be before the modulator and compression after it."
> 
> I remember modulators  but there isn't one in my TS-590.  I doubt there is one in any modern rig.  In the TS-590 architecture compression is done in DSP (Digital Signal Processing) and ALC is applied way down path at a TX IF amplifier.
> 
> ALC gets a bad rap but it is alive and well in Kenwood rigs.  It works without introducing signal distortion or harmonics.  Having said that, I do not use external ALC with my KPA500.
> 
> Andy, k3wyc
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