ALC issue - K3s

[Dick Frey]

Been waiting over a month for a reply from Elecraft:

"SSB problem: very little output, 2-5W peak when set for 100. ALC reads
full scale regardless of MIC setting, nil @<2. Tried two microphones. If I
whistle, I can get full output. All this independent of compression.
on CW: first dit after a long settle will overdrive trip the KPA500. next
dit will be at 100W and gradually come up to 500W over 10 dits. During a
contest it will behave.
Seems like an ALC problem.  Same issue if I restore from a 2yr old
config file."
--
Dick - K4XU
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[Mike K8CN]

Dick,

If you use the AUX cable between the K3S and the KPA500, check the ALC THR
setting on the KPA500 to be sure its ALC threshold level is not set too low.

Have you tried running the K3S directly into a dummy load to see if the ALC
behavior is the same as what you've observed (or run the KPA500 in STBY mode
to bypass its PA)?

Just wondering if the issue arises in the KPA500 ALC feedback to the K3S
rather than directly in the K3S itself?

Mike, K8CN



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