[Milsurplus] BC-9: Earlier and Later Operating Instructions.

[AKLDGUY .]

The 20 volt source and the resistor, pot, and S-1 function as described
here:

https://photos.google.com/share/AF1QipPLeOcthiYD5dSw-K6wuK7FKo0TBe255_2kpZdqUJMYnlndzw1zEMUbZTkmszFRdQ?key=TE54YTdOb1EwMnBlbW4yRmJfUTBTbU9YQnVOa1pB

73 de Neil ZL1ANM


On Mon, Feb 13, 2017 at 1:57 PM, Kenneth G. Gordon <kgordon2006 at frontier.com
> wrote:

> On 12 Feb 2017 at 21:30, Hubert Miller wrote:
>
> > The later instructions certainly give no indication of anything like
> what you're experiencing.
>
> Neither do the earlier ones for that matter.
>
> > You  don't suppose this has something to do with the hand-selected,
> > "one in ten or fifteen" VT-1 tubes that will work in the RF slot ?
>
> That was what I was wondering too.
>
> BTW, David, what is the purpose of the 20 volt source and the resistor,
> pot, and S-1?
>
> Also, in Mike's schematic, where is the filter "F"?
>
> I am going to dig out my #30s, build a clone of this thing, and see what I
> can make of it.
>
> From the similarity of the circuit AFTER the oscillator tube, I suspect
> that the two
> transformers, T-2 and T-3 are simply common 3:1 transformers. Anyway, that
> is what I
> intend to use there.
>
> Ken W7EKB
>
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