[Amps] Gassy Tubes/Technology Museum looking for artifacts

[Bill Fuqua]

Some 1625s , but not all had separate "beam forming plate" leads and 
cathode leads. They could be modified for Grounded Grid operation.

73
Bill wa4lav


At 09:33 AM 7/26/2007 -0400, jeremy-ca wrote:
>Beside filament voltage and base configuration?  I do know of one other that
>was very important to amp builders of the era. Want to take a shot at it?
>
>Carl
>KM1H
>
>
>----- Original Message -----
>From: "Pat Barthelow" <aa6eg at hotmail.com>
>To: <amps at contesting.com>
>Sent: Thursday, July 26, 2007 12:39 AM
>Subject: [Amps] Gassy Tubes/Technology Museum looking for artifacts
>
>
> > Folks:
> >
> > I grew up in the early era of Mr. Wizard, Renwal Electrostatic Generators,
> > crystal Radios, and Heathkits.   I  know the TWO distinct differences
> > between an 807 and a 1625 tube.   I also know an ARC- 5  when I see one.
> > I suspect many here know these artifacts of Technology history, too.
> >
> > While looking for information about residual gas in transmitting tubes, I
> > found this article, a very good read:
> >
> > http://www.smecc.org/r__m__r__residual_gases.htm
> >
> > After reading this, I looked to the root source of the article and found
> > SMECC ,
> >
> > http://www.smecc.org
> >
> > A great organization that is described below.   Please check it out, and
> > look through your junk boxes to see what yoiu can cotribute to their
> > Mission:
> >
> >                                                         SMECC:  Our
> > Mission:
> > Preserving Engineering, Communications and Computation History
> > We seek the three dimensional artifacts, the papers and thoughts  of those
> > who pioneered the technology.
> >
> > Sincerely, Pat Barthelow     aa6eg at hotmail.com
> > http://www.jamesburgdish.org
> > Jamesburg Earth Station  Moon Bounce Team
> > http://www.cq-vhf.com
> >
> >
> > _______________________________________________
> > Amps mailing list
> > Amps at contesting.com
> > http://lists.contesting.com/mailman/listinfo/amps
>
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