[Elecraft] [Elecraft} K3 power control in ssb

[Ignacy]

I noticed that too. Not a big concern here as my linear is 2 x 3-500Z but
would be a concern with high gain tubes.
Ignacy 



Graham Kimbell (G3TCT) wrote:
> 
> Others have already mentioned this as a problem and I have just tested my
> K3 #1198 driving an Acom 1000 amp into a dummy load with the following
> results.
> Condx:-  3.7MHz, 25w drive to get 392w o/p on cw.   
> I have TXG VCE set to -1.5dB, mic 15, cmp 24.
> 
> In lsb and then key down I adjust to just under 400W o/p. Then lsb gives
> 200-300w initially.  After speaking and then pausing a few times for a
> minute or so I get 400-600w out!!  The K3 system has turned up the gain -
> if I then go to rx and then key down I get an initial o/p of about 540w
> which then rapidly scales back to 400. Then speaking on lsb I'm back at
> the 200-300w o/p which gradually increases again. So there's a gain change
> going on which seems to be reset by a key down.
> 
> Hope this helps Elecraft or others in analysing the problem.
> Graham
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