That's a long time for tubes to sit unused. I'd suggest running them
with filament power only for about 48 hours, then hi-potting them at
their max rated anode voltage. If they don't arc, they are probably ok.
I once had a known good 3-500Z go bad after not being used for only
six years. I'm sure others have similar stories to tell.
73, Bill W6WRT
*********** REPLY SEPARATOR ***********
At 01:55 AM 6/8/2006, Glenn McNeil wrote:
>I've just been given a pair of RCA 8122 Tubes...never used, still in the
>original boxes. Date code 69-04.
>What are the chances they are still OK for use ?
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