[Elecraft] K3 Firmware Bug? Power Reduction After ATU TUNE

[Max iw0gxy]

Chuck, I had a quite similar problem. My K3 was qrp waiting for the KPA3.
When pushing tune I had full power (12W). Talking SSB I had full 12W but
when I touched the power knob, even reducing 0.1W caused the power to drop
to 8W peak. I had to retune to resume full power. I checked the LPA twice
but at last I noted that it wasn't fully inserted. I pushed it firmly and
now is working fine.
Ciao

Max IW0GXY  



Chuck - AE4CW wrote:
> 
> I am seeing an approx. 20% reduction of peak SSB power after pressing ATU
> TUNE.  This occurs at both 50 and 100 watts into a high-quality dummy load
> as indicated on the K3 RF bar display and my external LP-100A wattmeter. 
> Bypassing the ATU does not restore the peak power, so I don't think it's
> caused by the ATU.  Pressing TUNE does restore full peak power until I
> press ATU TUNE again which causes the peak power to drop by approx. 20%. 
> I see this behavior in firmwares 2.02/1.77 and the beta 2.15/1.84.
> 
> I presume this is a firmware issue and will report to Elecraft but wanted
> to see if others are experiencing the same problem.
> 
> Chuck, AE4CW
> 

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