Steve -
Much obliged. I tried the mod you addressed and that has settled
it down. Just a slight overshoot when set at 100W. More
when running lower (25W), but not as bad and I don't really care
since the KPA-100 has plenty
of headroom down there. I used the 1K and 3.3K values on the KSB
board as recommended.
73,
Bill
K4DXU
Original reply:
Bill:
It could be the problem I and some others had, where
there was a bit too much gain through the transmit
chain when the KPA-100 is installed for the ALC to
maintain control (in my case it was worst on 80m).
Here is a link to my "problem solved" post, which also
links to my original problem post. I can probably
root around and find some off-list correspondence I
had on this subject if you would like more info.
<snip>
I believe there has been at least one case of similar
symptoms that were not fixed by the cure I used,
however.
73,
Steve VE3SMA
Original Message:
<snip>
Anyway, I am seeing unstable power control on 40M SSB. 40M CW seems
fine (although the power control "hunts"
a little more than it does on the other bands). The power output on
my peak reading Bird
will exceed 150W on voice peaks - on the other bands, the peak is
at or below the power control setting.
Input current hits about 20 amps (normally it is pulling about 15
amps, except
<snip>
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