[Milsurplus] Query

[David Edsall]

Hi Pete, Jim and all,

Yes, interesting thought, operating a vacuum tube in the vacuum of space.
But consider the temperature in space and what it would do to the elements.
Could you even light the filament?
Now that's a cold 807!
73, David W1TDD

----- Original Message ----- 
From: "Jim Haynes" <jhhaynes at earthlink.net>
To: "Pete Williams" <jupete at bigpond.net.au>
Cc: <milsurplus at mailman.qth.net>
Sent: Tuesday, March 11, 2008 10:58 PM
Subject: Re: [Milsurplus] Query


>I don't know the answer, but that reminded me that back in my student
> days some 50 years ago, when the Space Age was just starting, we used
> to imagine you could operate vacuum tubes in space without any glass
> bulb.
> 
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