[Elecraft] Poor CW note more testing and a question (rather long-ish...)

[Andy Durbin]

"In general, ALC between an amp and a rig is a recipe for clicks and splatter. Most authorities advise against using it. This is not new -- it's in the manual for Ten Tec legal limit amps from the late '70s and for every amp I've owned since."

The OP has a KPA500 and K3S interconnect by an Elecraft AUX cable.  This means that ALC is connected (Aux cable pin 15) and opens the possibility that it is not configured correctly.  What I don't know is whether incorrectly configured ALC could cause the reported problem.  I suspect that would depend on the time constant(s) of the ALC loop.

73,
Andy, k3wyc