Jim,
There are 3 stages of RF amplification in the transmit chain between the W6
jumper and the LPF, you will have to refine the search a bit - right now,
all I can say with certainty is that the problem lies between W6 and the
LPF.
I would suggest checking all the components in the base circuit
I'm clueless but can offer an observation for you to laugh at and
ignore.
On 10 meters, -29.3 DBM yields 2.0 watts while -26.7 yields 5 watts.
The change in drive level is about 3 dB which is twice the power so that
looks like what I'd expect.
On 20, the change is about 6 dB or 4x power and you
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