"Heathkit-from-Hell"...Help!

[Edward Swynar]

Greetings, "Heathniks"...                        Wednesday 22-vii-98.

Does anyone care to advise my friend Stu as to what could be the source(s)
of ills plaguing HIS particular "...Heathkit-from-Hell"? I think it would
be beneficial to all if any and all comments in this regard could be shared
with the rest of the gang on the Reflector. One can never learn too much
trouble-shooting these green meanies!

Tnx & 73, de Eddy VE3CUI - VE3XZ

                                              _..._


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> From: Stewart D Lyon <stu_w6cux at juno.com>
> To: gswynar at durham.net
> Subject: Parts & SB-100
> Date: July 21, 1998 2:18 AM
>
> Hi Eddy,
> The problem I'm having is oscillation of the front end stages  -- both on
> xmt & rcv.  I've done all the usual things such as loosening and then
> tightening the board hold-down screws, messing around with the grounding
> of the shields, changing to low gain tubes. Even switching the p/s to
> 250VDC.  When I adjust the pre-selector through it's range, I get all
> kinds of birdies and other indications of oscillations.  Especially on 20
> and above. (Broke all the het slugs on 10 so not there)
>
> I can't remember exactly what happen on Transmit because I stole the
> parts you are sending me for a SB-401. But it was related to the same
> area as the Receive problem.
>
> I still have my trusty SB-101 that I built in '68 and souped up last year
> with a lot of help from the Heath/Tempe (and Collins) reflector.
> Especially Joe Lutz's postings.  It puts out a solid 120 Watts on 40
> (with 6146Bs) and has a receiver comparable to the SB-102. (Still not as
> hot as my SB-301 w/t 6GM6 RFAmpl !!)
>
> I'm still going to spend a little more time with it and will install your
> parts but I'm beginning to believe it's, to paraphrase you, "The SB-100
> from hell".
>
> 73, Stu - W6CUX
> Winnetka, CA
> ARRL Life Member
>
> On Mon, 20 Jul 1998 16:28:46 -0400 "Edward Swynar" <gswynar at durham.net>
> writes:
> >Hi Stu (was steve)                                      Monday
> 20-vii-98.
>
> >Already got your "Plan B" message, so don't worry.
> >
> >The parting out of my SB-102 is going well---about all I have left are a
> >few of the switches, front face, the final tank components, and most of
> the
> >circuit boards. Fastest moving item was the dial assembly, followed by
> >the LMO.
> >
> >Just to re-iterate what I asked earlier, Stu, what is it that's ailing
> >your '101? Perhaps if you asked that question to the Heath user
> >group/reflector in general, you might get it back to life faster than
> >you realize...! Could be worth your while.
> >
> >73, de Eddy VE3CUI - VE3XZ
> >
>
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