Gain control within the KPA1500 just wouldn't be practical. It would
require addition of some sort of high power variable attenuator. Slow
feedback to the K3, however, only requires some added firmware. No, it
wouldn't work with other transceivers, but that's life. Perhaps someone
would like to design an external box or write some PC software to
perform that function.
73,
Scott K9MA
On 11/19/2019 06:55, Andy Durbin wrote:
"Yes, ALC that really worked well with an amplifier would make the above
unnecessary, but I don't think anyone has figured out how to do that.
Until someone does, a slow feedback loop adjusting drive power would
solve the problem above, not introduce any distortion, and save us
operators the bother of riding the power control."
The significant problem with implementing closed loop power control is that it
would only work (if it could work at all) with an Elecraft transceiver
connected by the AUX cable. The KPA1500 is marketed as being compatible with
non-Elecraft transceivers.
Gain control contained within the KPA1500 would be an advantage to all KPA1500
owners, not just those with a fully integrated Elecraft transceiver.
Andy, k3wyc
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Scott K9MA
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