[Elecraft] KX3 mode PSK D problem

[N5XL]

Thanks Wayne,

TX Gain Calibration competed with no change in regards to the PSK31 problem. 
Also tried firmware 1.50 with no change either.

I have received some off the list suggestions that the PA may be folding
back due to high temps but that is not the case.  The temp has not exceeded
35C for the on the bench testing that I am doing.

The problem was initially found when I was mountain top portable and tried
to initiate a PSK31 contact at 3 watts.  With no luck at 3, I move to 5
watts and that is when I noticed the RF power meter of the KX3 not showing
any output power.  At this point I knew something was wrong so I came home
and started the bench testing.  

Strange that all other modes work perfectly, including internally generated
RTTY.  Only internally generated PSK31 has this problem.

Any other ideas to try?

73
Dave
N5XL





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