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Re: [Amps] Gassy Tubes/Technology Museum looking for artifacts

Subject: Re: [Amps] Gassy Tubes/Technology Museum looking for artifacts
From: "Pat Barthelow" <>
Date: Thu, 26 Jul 2007 06:58:26 -0700
List-post: <>
Hi Carl, and group:

One, the 807, comes in a  metal envelope, liquid cooled configuration...(:>) 
  ....rumored to  add DBs to signal reports, and bring in larger crowds to 
antenna parties.

A lot of the old ham vernacular and culture is fading into the ether these 
Same phenomenon, that whistling CQ in a crowd of techhie strangers, usually, 
  no longer  gets the knowing smiles of the ham operators among them....   
(;>)   has a lot of nice technology history bytes, and is 
looking for more..

73,  Pat

>From: "jeremy-ca" <>
>To: "Pat Barthelow" <>,<>
>Subject: Re: [Amps] Gassy Tubes/Technology Museum looking for artifacts
>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 
>----- Original Message ----- From: "Pat Barthelow" <>
>To: <>
>Sent: Thursday, July 26, 2007 12:39 AM
>Subject: [Amps] Gassy Tubes/Technology Museum looking for artifacts
>>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:
>>After reading this, I looked to the root source of the article and found 
>>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
>>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
>>Jamesburg Earth Station  Moon Bounce Team

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