[Milsurplus] Radioactive OA2 tubes?

[Peter Gottlieb]

  Haha, most politicians are vacuous, rather than supporting the production of 
more vacuum tubes.. :-)


On 9/26/2010 7:06 PM, DeWitt Clay wrote:
>
> Yes. That's right. Thoriated tungsten filaments got on the radioactive list a
> while back, hi! Good for emission, hi. I read recently that Thorium is hard to
> get rid of i.e. dispose of safely as a byproduct of mining other minerals like
> the rare earths that are currently in the news in the flap between China and
> Japan. Well, you politicians: we need to make more vacuum tubes. That'll get my
> vote and promote the world's suppy of JAN tubes!
> 73, DeWitt  N4QNX
>
> ----- Original Message ----
> From: mac<w7qho at aol.com>
> To: WA5CAB at cs.com
> Cc: milsurplus at mailman.qth.net
> Sent: Sun, September 26, 2010 6:42:17 PM
> Subject: Re: [Milsurplus] Radioactive OA2 tubes?
>
> Ran into a warning like that on some JAN 811A tubes a while ago. 
> Something to do with the thorium in the filaments maybe?
>
> Dennis D. W7QHO
> Glendale, CA
>
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