Yves,
I don't think I was the one with the problem, but I may have been assisting
someone else with that problem.
Since you can adjust the voltage at R30 for other bands, we know th
eoscillator is working, but it may not be working on the proper frequency.
Re-check the value of C72 to be certain it is 270 pf (it is only used on 80
meters). Next re-check the number of turns on T5.
Check to see that you have the correct varactors in D21 thru D26.
If you have added the K60XV, the voltage at 4 MHz will normally close to the
max. Since you have an older K2 serial, I am wondering if everything
(especially D19 and D20) were soldered into the correct places.
If those are good, set the frequency dial to 3.500 mHz and check the
frequency at TP1 (use Cal FCTR or an external counter) - you will find
something in the vicinity of 8.415 MHz if all is well - if it is far removed
from that, you will find the problem in either the VFO frequency determining
components or in the VFO range select section (check sheet 1 of the RF Board
schematic to identify the components involved).
73,
Don W3FPR
> -----Original Message-----
>
> Re K2 875
> I have a similar problem that Don, W3FPR had.
> On page 61, Turning L30 has no effect on voltage measured at R30, when
> frequency is at 4000 Khz. V is 8.35V.
> But adjusting L30 on other bands adjusts voltage!
> Checked L5: turns etc. C72, L30, OK.
> Any idea?.
>
> Yves Dussault-VE2ATD
>
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