[AMRadio] 813 question

ronnie.hull ronnie.hull at glowbugs.com
Tue Jan 31 13:17:09 EST 2006

I have certainly never heard of that, but I'm no expert. However, I have a box
full of 813's that are ww2 vintage and NONE of them have loose bases.


---------- Original Message -----------
From: charles free <mjcal77 at yahoo.com>
To: amradio at mailman.qth.net
Sent: Tue, 31 Jan 2006 07:12:56 -0800 (PST)
Subject: [AMRadio] 813 question

> Hello all,
> I have a buddy who insists that if I don't get my old
> 813's out of the "future project" box and fire the
> filaments up on them now and then, the base seals will
> eventually deteriorate.  I guess he is talking about
> the adhesive that secures the base to the bulb.  I
> don't see how the glass envelope where the leads pass
> through the glass could be affected by lack of use,
> but maybe one of you folks has experience with this. 
> Anybody heard of this one before?
> W4MEC, Charlie in NC
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------- End of Original Message -------

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