[Johnson] Valiant VFO

[W7FE]

See the following:

www.w8ji.com/johnson_vfo_chirp_jump.htm

Or Google 'w8ji valiant' for this and other subjects re EFJ gear.

73 de Stu, W7FE
Henderson, NV

Douglas Rowlett <douglas.rowlett at gmail.com> wrote:

>VFO was working fine on my Viking Valiant, but recently began exhibiting strange behavior. When first powered up, it acts normally, but after 5 minutes or so, attempting to adjust the frequency with the VFO knob causes the transmitter to jump to a random frequency somewhere in the band. As long as I don't touch the tuning knob, transmitter is stable and works normally. Touch that dial to zero beat, though, and away she goes. So, before I tear into this thing, any sage advice on where to start looking? Could it be as simple as a bad tube? Bad capacitor? Cold solder joint? Any advice to point me in the right direction so I don't spend hours in frustration will be appreciated.
>
>Also, what's the best way into the VFO? Through the top, the side?
>
>Doug, WB5IRI
>
>Sent from my iPad.
>
>Sent from my iPad.
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