[TenTec] OT: Need advice checking out a stored 3-500

[Wade Staggs]

 Eimac and Amperex say nothing about burning in new 3-500Zs. Since
gettering with Zirconium does not take place until red heat is reached -
the tubes getter themselves if they are simply put in service. Running the
filament alone does not reach the temperature needed for gettering, so that
is an exercise in futility..


On Sun, Aug 3, 2014 at 7:41 PM, Al Gulseth <wb5jnc at centurytel.net> wrote:

> (Posting this for a local fellow ham who currently isn't on the web)
>
> As the subject line says, a local ham friend of mine asked me today about
> how
> to go about checking out/waking up a 3-500 (Z?) that came as a spare with
> his
> AL-80A when he bought it a few years back. He's not really sure how long
> the
> tube had been sitting around unused/un-exercised before he bought the amp.
> I've seen conflicting info on how to go about it, and the last time I had
> my
> hands on something like that was 30+ years ago when I worked in the
> broadcast
> industry before I switched to a different career. Any suggestions? Other
> than
> his amp I don't have any way that I know of to check it.
>
> Contact me off list if appropriate.
>
> BTW Ten-Tec connection: he's driving it with an Orion.
>
> TNX/73, Al
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