[Johnson] Valiant 2 VFO pulling

[C Eus]

Dave:
Try checking the tubes in the VFO, particularly the
OA2 and the 6AU6. Assuming that the tubes could be
weak, they could be susceptible to "pulling". Let me
(us) know and thanks. Cal.


--- Dave Maples <dsmaples at comcast.net> wrote:
> All: I have a Valiant 2 that on 160M and 40M (the
> two fundamental bands for
> the
> VFO) the VFO pulls significantly as the EXCITER
> control is adjusted.  This
> suggests that the isolation amp section of the unit
> (the plate circuit of
> the VFO tube) doesn't really seem to be working
> correctly, but I can't spot
> the problem.
> 
> I've been through the unit and can't find a cause
> after doing the usual tube
> replacement, voltage and resistance checks, etc.
> 
> Is this a design issue for the Valiant (hard to
> believe) or something folks
> can suggest changes for?
> 
> Thanks,
> Dave WB4FUR
> 
> 
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