[Elecraft] K2 Low power output

[Don Wilhelm]

Dave,

It may be that the wattmeter in the KPA100 needs calibration - and is 
the most likely reason.
Dig out the KPA100 manual and look at page 48.
Do the SWR Bridge Null Adjustment first.
Then do the Power Calibration.

There may be some variability in the calibration from band to band 
because the diode response is not entirely  linear with respect to 
frequency, but if you do the calibration on 40 meters or 30 meters, it 
should be quite reasonable for all bands.

73,
Don W3FPR

On 11/25/2014 12:55 PM, W8OV wrote:
> I recently acquired a very clean K2/100 with external KAT100 ATU.  I 
> have a K3/100 and its power output agrees closely with the readings of 
> both Bird and Elecraft W2 watt meters. According to these watt meters 
> the K2, set to full power of 110W, puts out about 80 - 85 W into a 
> dummy load (SWR reads 1.1 on KAT100). Everything else seems to work 
> very well, and manuals came with the radio.
>
> Any suggestions as to steps I should take to get full power output 
> from the K2 (S/N 4000+), or is that close enough?