[Johnson] Grounding exciter / plate tune shafts on Johnson ValiantII

[Don Ehrlich]

I fixed the 40M chirp in my old Valiant by grounding the shaft in the final 
tuning capacitor.  It reduced coupling from the final stage into the VFO, a 
problem that has often been mentioned and which only occurred on 40 meters 
which is the only band where the rig operates straight through (no 
multipliers of frequency after the VFO).  My Valiant was old and dirty.


Don K7FJ


> All: I have after about 3 years started working over my Valiant II.  I
> thought I had read somewhere that a source of chirp (as well as heat) was
> the ungrounded capacitor shafts on the exciter and plate tuning capacitors
> (the capacitors go to ground through the shafts and the bushings on the
> front panel).  My understanding was that grounding those shafts back at 
> the
> capacitors themselves would result in much better performance.  Anyone 
> here
> comment on that?
>
> Thanks,
> Dave WB4FUR