[Johnson] Johnson Ranger OSC Insight?

[K9FFK]

Looking at schematic.

Intermittent vfo, steady vfo zero, indicates a poor/dirty contact in SW2.

What happens to mult/bufr current?

Dick K9FFK

On 3/5/2019 8:32 PM, krgoodwin at comcast.net wrote:
> I have yet to fully decipher the Ranger I schematic but wonder if anybody
> has some insight into a Ranger I problem.  The Oscillator has an
> intermittent only on 40 - 10/11 meters, it works fine on 160 - 80.  The
> problem manifests itself with the meter reading no grid drive while the OSC
> meter current is pegged (> 40 mA).  However the OSC works fine in the VFO
> Zero position for all bands with the OSC current between 24 - 32 mA as
> expected.  I would guess the problem is brought about with whatever is
> switched into the drive chain between the VFO Zero mode and the operate
> CW/Phone mode.  The intermittent problem seems to come and go with no
> observed correlation to the operation of the Ranger.
>
>   
>
> The manual mentions "a simple internal wiring change permits either the VFO
> alone or one or both of the 6CL6's to be energized in the VFO "ZERO"
> position."  Any idea where I would find this simple wiring change? I have
> both the Assembly and Operating Manuals.
>
>   
>
> Thanks in advance,
>
> Ken K5RG
>
>   
>
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