After replacing my K3 DSP board with the upgraded version, I found that my watt meter calibrations
were way out of spec. I redid the low power cal and the K3 now tracks my Bird 43/HP RF VM / oscilloscope combo
almost perfectly as it did before.
However, no matter what I try, I can't get the HP watt meter in spec. When I do the calibration at 50W, the K3
puts out 100 W when 70W is selected. I finally ended up calibrating at 100 W, but of course everything is way out of
spec below 90W and WMTR HP is maxed out at 180.
Before the board switch , the K3's power meter tracked my other instruments within a few watts.
I've done multiple re-sets and gone back to earlier SW versions but no luck.
K3 S/N 489; 4.12, 1.13, 2.60. Any suggestions?
By the way, the upgrade improved the audio. It seems smoother or less harsh than before especially
on CW. Purely subjective!
73
Gord VE7YU
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