[Johnson] Valiant VFO jumping

[kwylow zinjanthropus]

Dave:
You may want to ensure that all the mechanical contacts inside the VFO are secure (bolts and nuts securely tightened, wires soldered, lugs grounded, etc especially in the frequency determining components). Clue seems to be that when the unit heats up, the problem magically disappears (this is probably because the loose joint tightens up with the expansion of metal). Cal, N6KYR
 Dave and Sharon Maples wrote:All: I am putting the near-to-finishing touches on a Johnson Valiant II. I
have noticed that the VFO jumps frequency about 400 Hz on 40m-10m but not on
75m. It seems to quit as the unit continues to heat up. Any thoughts on
what this could be?

Thanks,
Dave WB4FUR

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