[Elecraft] [K2] poor IMD on barefoot K2, even at low power

[dl0tuh]

Don, Julian, thank you for your replies!

I forgot to mention - RTTY mode is activated and selected, SSBCr is 1:1.
SSBA is 3.

The real IMD value may be far from what DigiPan tells me, but I see a very
well known picture - two solid lines on the waterfall for two main tones and
several minors for intermodulation products when sending idle.

I was not sure if the distortion happens in FT840 or PC on receiver side,
but with an antenna I can see strong but clean signals on the air. I also
used my SoftRock and recorded the PSK sound - same distorted picture.

Can it be something very stupid, like one dead transistor (Q7 or Q8) in the
PA?
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