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Any indication of two-tone IMD performance vs power, Robin? I
have a few of those PAs to convert. I was expecting to have to
de-rate them significantly for SSB, although my main use would be
for CW and digimodes.
... I am seeing a nice
solid 15A total now, about 11A on the carrier side, 4A
on the peaking side, I think this is about flat out
for this amp. ... I found a resistor fault on the
biasing of the drive amp and corrected that, it is now
stable where as it was all over the place before.
The SMA lead connecting the amp to the dummy load (a
250W slab load out of an old band IV transmitter) gets
quite warm after 30 seconds of carrier so something is
coming out :)