[Amps] preserving tubes

[Carl]

It depends upon the tube Gary, some are known to degrade (outgas) and others 
arent. A few have poor air seals and turn to paperweights.

If you have the means to regetter before applying full HV or RF then do it. 
Most of the indirectly heated types just require a day or so of filament 
voltage only.

Otherwise pull a Dirty Harry.

Carl
KM1H



----- Original Message ----- 
From: "Gary Smith" <Gary at ka1j.com>
To: <amps at contesting.com>
Sent: Wednesday, October 03, 2012 12:20 AM
Subject: [Amps] preserving tubes


> Is there any benefit to taking a ceramic tube on the shelf and
> running it every so often and then returning it to the shelf to
> archive it for a backup when needed? Or os it just as well to let it
> sit until needed?
>
> Gary
> KA1J
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