[Heathkit] SB-303 LMO tuneup
Shawn Duley
[email protected]
Sat, 06 Apr 2002 07:33:31 -0700
I have an SB-303 that I have replaced almost all the transistors (except
RTTY) and is about the hottest thing on four rubber feet. After
completing a stand alone alignment, I noticed that the LMO has shifted
down in frequency (probably 15-25 Khz) and is not quite linear. I can
not get the top end of any band. Seems to me that when I overhauled the
303 12 yrs ago and put it in storage, I had the same problem. I want to
go into the LMO and adjust it back in spec.
Has anyone done this before and have any words of wisdom before I tear
into the LMO? I wouldn't think it would be too much different than
trying to tweak the HW series VFO's into alignment.
Shawn
N7PRP