K2 alignment issue

Posted by Dan Grizzard on Nov 05, 2009; 12:27pm
URL: http://elecraft.85.s1.nabble.com/K2-alignment-issue-tp3951814.html

I have recently completed phase III build of my K2 and started the alignment process.
A couple of problems developed during the alignment so I went back
and started re-checking phases I and II resistance and voltage checks.
During the initial construction of these two phases all of the resistance
and voltage checks were within tolerance ranges. This time the VCO
voltages were off. I am able to get the 6vdc at r30 with no problem. It
was fully adjustable to that value. The voltages on 80 meters did drop from
6 vdc at 4ooo hz to 1.7 vdc at 3500 hz. When checking the voltages on
the other bands the voltage was a solid 8.3 vdc and would not vary when moving
the vfo. The display on the dmm did momentarily fluctuate while moving the vfo
but then went back to 8.3 vdc. Adjusting the voltage pot  on these bands did not change the
voltage either. When I switched back to 80 meters I was able to adjust back to 6vdc
as before. Anybody have any suggestions? I have searched the archives and found
nothing on this subject.
73
Dan
af4lb
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