[Johnson] Viking II Keying Mod - Looking for Info

[Kenneth D. Grimm, K4XL]

> I have a Viking II that has  what very likely appears to be a factory
> installed keying circuit mod.  There is a small chassis mounted on the
> internal shield  by the crystal board that has a 12AU7 tube and
>  associated circuitry. I am lead to believe that its a keying mod
> designed to delay osc. turn on to minimize chirp??
> My Viking II Manual makes no reference to it? Would anyone have a
> schematic or info?
> Many thanks
>
> Mark V. johnson VE3DJU/VE3DDI

The information that you need can be downloaded from BAMA.  Go to the
Johnson page and click on Keyermod.  The manual was generously provided
by Norm Hall, W6JOD.  You will need a copy of the latest version of the
free Adobe Acrobat Reader (v. 6.0).

73,
Ken K4XL
k4xl@arrl.net
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