[Elecraft] K2 VCO trouble and fix

[HSHERRIFF at sc.rr.com]

OK, here were my symtoms:

Just completed Assembly Part II.
Performing the VCO alignment... all is well (all voltages well in 
range)until I get to the 10m band. The Low freq. reading is 3.046... 
ok so far. But as I tune towards 28,800 I lose lock at about 28,400 or 
so.... voltage ramps up to 8.4.

I checked C71 - C74, D21-D26, T5. all are correct. Soldering looks 
good. 
I move the windings of T5 in and out... this just changes the freq I 
lose lock at, but not by much. Still can't get near 28,800.

I rewind T5... just for the fun of it.... (?)
NO help there either.

I e-mail Gary at Elecraft (3:01pm)
Get a reply from Gary (4:33pm)

He gave me a PAGE worth of "might be"... one being to check RCF15. He 
said if it was open it can cause all sorts of odd problems.

Well, it WAS open... I must have bent the leads to much or heated it 
too much, or whatever. Anyway, I bridged across it momentarily to see 
what effect it would have. 
Guess what?   ALL VCO voltages were well within limits...including 10m 
high freq. Without even touching L30. So, I ordered a new choke and 
thanked Gary for a quick and accurate response.

My comment to him was:

"What a great radio, what a great staff...."
It don't get better than this.......
Now, back to building the best radio on the market.... by the way, I 
was able to copy a little CW on 40m while setting up to adjust the IF 
amp... 

Thanks Elecraft for a great product and a GREAT staff.

Harlan
KI4IDA