Greg Buhyoff wrote:
>
> I own two K3s and the newest one (factory assembled) is showing a power
> output (both PEP and Forward) about double of what the power control
> indicates.
>
> I have done an automated power calibration via the K3 Utility using a
> 1.1:1
> 50 ohm resistive dummy load connected to ant port 1 and used a power
> setting
> of "norm". The calibration routine indicated success at 5 and 50 watts.
>
> But, when I switch to SSB and transmit the power out is about double what
> I
> have my power control set at. I have the tune control set for 10W and
> that
> s what I get when I use the tune control for my Palstar Auto Tuner.
>
> However, when I set the power to about 35 watts for my amp drive I am
> getting sometimes 70-75 watts out PEP and Forward Power is the same.
> Trying various power levels on the K3 give similar results -- much higher
> than the setting.
>
> I have checked my power out numerous times using an LP-100A and Alpha
> 4510
> which both give PEP and Forward power measurements. I am using the
> Elecraft
> HM2 mic and tried both low and high mic gain in the menu setting where
> you
> set the bias to on. My mic gain is set for about 6-7 bars on the ALC
> scale
> and compression set for 1 lit bar on the scale.
>
> I then did the auto power calibration again and all is well with a
> successful calibration indicated by the K3 power gain calibration routine.
>
> I must be missing something, but for the life of me, I can't find it. Or,
> I
> am having brain lock-up and not seeing the obvious.
>
> Any help or suggestions would be most appreciated.
>
>
Tell me about it! Though in my case, it happens only in DATA, not SSB.
You need to set the CONFIG menu entry TXG VCE to -3.0dB. That should fix it.
Though why the K3 can't figure out the correct gain for itself is beyond me.
Not everyone has an accurate power meter.
-----
Julian, G4ILO. K2 #392 K3 #222.
http://www.g4ilo.com/ G4ILO's Shack http://www.ham-directory.com/ Ham
Directory http://www.g4ilo.com/kcomm.html KComm for Elecraft K2 and K3
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