Seems I've found the problem but I should wait till monday to try to fix it.
As suggested by Gary at Elecraft I've checked some components and I found Q9
on the KPA3 board broken.
I think Q9 is both responsible of the power instability I've found and the
drop in a S point when KPA3 was enabled.
I'll let the list know.
Max IW0GXY
Vic K2VCO wrote:
max iw0gxy wrote:
Hi all,
I connected the XG2 signal generator to my K3 and I've injected 50microV
into the antenna. I have the standard S9 but when I rise the power to 13
and
up signal drop down to S8. If I turn the knob to 12W or less signal turn
back to S9.
I've noted this behavior on signals on air but to be sure I've used my
signal generator.
I do not see any change in received signal levels here when switching
between low and high power.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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