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[AMPS] Making tubes

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Subject: [AMPS] Making tubes
From: (Phil (VA3UX))
Date: Thu, 05 Jul 2001 15:39:57 -0400
At 10:23 AM 7/5/2001 -0700, Jeff Stai WK6I wrote:

>At 10:08 AM 7/5/01, Phil (VA3UX) wrote:
> >>With the high price of tubes, I wonder if anyone has ever invisioned a 
> homebrew project to actually make the tube from scratch?  I know that it 
> would be a little more than the average ham is used to working with but 
> why could we not use something such as stainless steel tubing and come up 
> with a decent power transmitting tube.  After all, someone once did that!
> >
> >Virtually impractical to do in a home setting Billy. Not impossible, but 
> largely impractical.  The cleaniness requirements are high and the 
> equipment needed to produce a hard vacuum is expensive. And then there's 
> the unique materials required, etc, etc.
>hi - It is worth noting, however, that the first tubes were in fact "home 

No question - with a glass blower and related equipment, oil bath vacuum 
pumps.  And they weren't very good by today's standards, but they did quite 
well with what they had.

Remember, the point of the original post was circumventing the high cost of 
tubes possibly via homebrew.  Tubes can be home-brewed - but not at a lower 
cost than production jobbies.  It's fun to think about though.


>It would be something you would do because you want to, not because it 
>would save money, etc.
>After enough practice and investment (time, materials, equipment) a 
>usuable product
>could be the result!
>GL - jeff wk6i
>jeff stai
>radio stuff:   WK6I in DM13
>rocket stuff:  NAR #21059 TRA #3356 Level 2 Cert.
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