[Amps] GI7B Question - Input Matching

[James Colville]

You need the flywheel effect that a C-L-C tank circuit can provide. A broad
band transformer is not the answer. This was just discussed here at length not
long ago.

73
Jim W7RY




On Sun, Mar 14, 2010 at 2:58 PM, ZL2AAA <zl2aaa at paradise.net.nz> wrote:

> I think you will find it's nearer 35ohms.Morrie
> ----- Original Message -----
> From: "Lee Buller" <k0wa at swbell.net>
> To: <amps at contesting.com>
> Sent: Monday, March 15, 2010 9:30 AM
> Subject: [Amps] GI7B Question - Input Matching
>
>
> >
> > I have been reading about the GI-7B Russian made tube.  It seems that the
> > input impedance of two tubes is around 100 ohms.  Could you not just use
> a
> > 2:1 transformer to make a match from 50 ohms to 100 ohms?  What am I
> > missing here.
> >
> > Lee - K0WA
> >
> > Ham Radio Operators:  Kansas QSO Party is August 28-29, 2010.  See
> > www.ksqsoparty.org for details
> >
> > In our day and age it seems that Common Sense is in short supply.  If you
> > don't have any Common Sense - get some Common Sense and use it.  If you
> > can't find any Common Sense, ask for help from somebody who has some
> > Common Sense.  Is Common Sense divine?
> >
> > Common Sense is the image of the Creator expressing revealed truth in my
> > mind. -  J. Wolf
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