Sometime back around 1970, I built an amplifier for my college radio
club. I spent many, many hours trying to get ALC to work, and failed
completely. Fortunately, the exciter really couldn't overdrive a pair
of 3-500Z's, so we ended up running it just as Elecraft recommends,
using only the exciter's internal ALC. I'm sure amplifier designers no
know a lot more about it than I did back then, but apparently closing
the ALC feedback loop around an external amplifier is still difficult to do.
73,
Scott K9MA
--
Scott K9MA
k...@sdellington.us
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