[Heathkit] SB 102 vs HW 101

[RJ Mattson]

Early on (1976) my HW-101 kit developed a few kc jump in frequency at times. 
I traced it to the mica compression trimmer on the vfo variable cap. After 
replacing it with a glass piston trimmer it has worked flawlessly with no 
jumps or warbles since 76.
bob...w2ami

----- Original Message ----- 
From: "Ted Bruce" <kilocycles at yahoo.com>
To: <Heathkit at mailman.qth.net>
Sent: Saturday, August 05, 2006 1:16 PM
Subject: Re: [Heathkit] SB 102 vs HW 101


Adding to Ken's comments, the HW-101 VFO is capable of
pretty good linearity.  When I did the alignment on
one I bought last year, I was able to get both ends of
the 500 kHz tuning range, and all 100kHz points in the
range, within 1 kHz.  Mind you, it did take a lot of
fiddling with the VFO trimmers to achieve that.

Back in the 1970's, I had an SB-100, and this HW-101
is better performing, VFO-wise, than my SB-100.  The
SB-100's LMO tended to "warble" when I tuned.  I
didn't know enough back then, nor have the test gear
that I have now, to enable me to try to cure the
problem.

Thanks, Ken for the info on the SB-102 LMO.  I wasn't
aware of the issues with the solid state LMO.

73,
Ted KX4OM

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