[Johnson] Valiant VFO

[Carl]

Sent: Monday, March 17, 2014 12:11 PM
Subject: Re: [Johnson] Valiant VFO


>
> ----- 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


The VFO is a sealed unit and a fairly major chore to remove. There are 
several repair url's via a Google that cover this and some important 
cautions.

Carl
KM1H