[Elecraft] K2 low power out on 20 meters

[Don Wilhelm]

Wiley,

I trust you are peaking the bandpass filters at the 1.5 to 2 watt level 
rather than at 12 watts.  If you are trying at 12 watts, you may not see 
the peak because the power is already near the maximum.

Check the values of C19, C20, C28 and C22.  If those are all correct and 
well soldered, then the conclusion is that C21 is defective.

If you find anything other than a C21 problem, you will have to re-peak 
30 meters before peaking on 20.

73,
Don W3FPR

On 2/25/2013 8:57 AM, Wiley Kling wrote:
>    I am building my 3rd Elecraft K series kit, this time a K2, my second.
> All has gone well.  I am on page 80 of the manual, right column, 3rd step,
> "adjust C21 and C23 for maximum power output".  Adjusting C21 does
> absolutely nothing.  Regardless of a very slow 360 degree rotation, power
> out does not change, does not peak.  C23 works normally and peaked as it
> should.  I continued with all of the other steps, peaking the power on all
> of the other bands.  Here are some facts:
>
>   
>
>