Mark,
Did you measure C44 and C46 through the entire range of rotation? and
what is the color of the plastic bodies?
The last I knew, they were about 20pF maximum and the bodies were red.
The others do not have a sufficiently low capacity to tune 12 meters.
Similarly for C21 and C23 which the last I knew were yellow or brown.
If those capacitor pairs are swapped, you would have the problems you
describe.
73,
Don W3FPR
On 11/11/2021 5:30 AM, M Bak wrote:
This is my 2nd K2 build this year. This fantastic kit has kept me sane. I
tested every component on an LCR meter (found RFC10 open) and tried to work
as slowly as possible.
I got to the end of the build to the very last alignment step.--
The adjustment of C44 and C46 for the 12 meter band and I can only get
0.2W. 10 meters is fine with adjusting L12 and L13 but 12 meters (which I
do not use but it should work) is nada.
I had the exact same problem on 20meters but careful tweaking of C21/23 and
L8/9 and it burst into life.
When testing the capacitors I noticed they had quite a wide tolerance
range. Could the band pass range for the 10 and 12 meter bands be too high?
Any ideas would be appreciated. I am quite good at wondering down rabbit
holes.
Rgds. Mark G4RUR
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