[Johnson] Valiant VFO

[Richard Knoppow]

----- Original Message ----- 
From: <WQ9E at btsnetworks.net>
To: <douglas.rowlett at gmail.com>; <johnson at mailman.qth.net>
Sent: Monday, March 17, 2014 4:09 AM
Subject: Re: [Johnson] Valiant VFO


> Doug,
>
> With the symptom you describe I believe a dirty wiper on 
> the tuning capacitor is the most likely culprit.  Any poor 
> connection in the Valiant could cause this but I would 
> start with cleaning the wipers on the tuning capacitor. 
> Access is not fun but you should be able to get there 
> through the side sufficiently to address the wipers.
>
> The W8JI described instability is largely from RF 
> developed when actually transmitting so it isn't the 
> culprit of these large random jumps while in standby.
>
> Rodger WQ9E

     If you have access to the tuning cap also make sure 
there is nothing caught between the plates. Its possible a 
particle of something conductive has fallen in. Blow out the 
plates. You can also run a sheet of paper between the plates 
to clean them.


--
Richard Knoppow
Los Angeles
WB6KBL
dickburk at ix.netcom.com