Andy,
If you do connect the ALC, check the maximum drive power that you need
for each band and do not exceed it. In other words, do not drive the
amp into ALC.
Using ALC to control the transceiver drive power will result in
overdrive and distortion. You can hear that distortion on the bands.
Should you upgrade to an Elecraft K3, you can set a per band drive level
for when the amplifier is active and when it is bypassed.
73,
Don W3FPR
On 5/10/2018 5:17 PM, ANDY DURBIN wrote:
"That's the point. The ALC cable protects the KPA-500 when the operator "spaces" and
leaves the exciter power control at full power (100+ Watt) level."
My experience, and I have 10 Hz logger data, shows that the amp alarms, sets
fault FL06, and drops into standby mode with no change in the ALC voltage level
being observed.
I didn't set out to investigate this but my logger was running when I
accidentally tripped FL06 on 6 meters this afternoon.
It appears to me that ALC only provides protection if the normal over-drive
protections fail. Currently the ALC voltage only feeds my logger and is not
connected to my TS-590S.
73, Andy k3wyc
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