[Elecraft] VCO Alignment

[Steve Taylor]

Hello All -

I ordered K2 #5329 in January, and was just able to start on it a few weeks ago.  After a short break I'm back at it and this afternoon got to the Alignment and Test, Part II.  All was well until I got to VCO Alignment on page 61.  At first I was not able to adjust L30 and get the VCO voltage to 6.0 volts.  All I could get was 7.99 volts.  After reading the archives, I spread the turns on T5, and sure enough, I could get 6.0 volts at R30.  But, it seems after adjusting, it drifts up slowly.  So, I decided to go through the bands and see what I got.  At 3500 Khz, it was a little low, and everything 7300 and above is at 7.99 volts.  I've looked the board over again and again, and can't see anything wrong.  Whenever I check R30 at 4000 KHz, it will be off 6.0 volts, when I adjust it back, it continues to drift, and everything above 7300 is pegged at 7.99 volts.

I hope someone has some suggestions, because I'm stumped.

Thanks in advance, Steve - WD7M