[Elecraft] K3 power output instability

[Don Wilhelm]

Arliss,

I would suggest that you run the Transmit Gain Calibration and see if 
that improves the situation.

73,
Don W3FPR

On 3/13/2013 9:10 PM, Arliss wrote:
> I'm experiencing a problem with instability in power output from my 
> K3/100.  No word back from Elecraft yet (it's only been a few days), 
> so I thought I'd try here.
>
> The problem is that at relatively low power output levels 
> (approximately 10 to 40 watts), the power output does not remain 
> constant.   If I engage TUNE, the power will vary plus/minus 3 or 4 
> watts, then jump up briefly by as much as 10 watts or more before 
> resuming smaller excursions.  Although the power variations are brief, 
> they cause the grid protection circuit in the amp to trip.  This 
> behavior seems to be independent of mode and frequency.
>