[Elecraft] Low power on 20m using the KPA100 option

[Renardy, Martin]

Dear all,

last weekend I finished the KPA100 option, which is causing a little
problem. Everything
Is running well except power on 20m, where I just reach 50 Watts.

The QRP output is not affected, so I am quite shure that the RF path to
the antenna 
through the LPF is ok. Just to be shure I have checked all inductivities
and capacities
of the 20m filter. They are ok including the used core types of the
inductivities.

Somehow I am getting the impression, that on 20m the PA doesn't get
sufficient driver
Power. My signal reports on 20m have been ok, except the "missing
50Watt". This issue 
drives me realy crasy, because everything else is working ufb.

Any suggestions?

vy 73 de Martin, DL6KMR