At 02:54 PM 3/15/2000 -0500, Tom Rauch wrote:
>If not, and if I was using the tubes, I'd reset the bias until I did see
>a tinge of red color in some area of the anode or at least
>periodically intentionally redden the tube anodes to make sure the
>tubes are gettered.
Good morning,
I agree with Tom. 3-500z tubes have proved reliable for me
in regular amateur service.
But of four spare unused 3-500z tubes, that were on the shelf
for 12 years, only one has proved to be OK. The other 3
are displaying internal shorts or gas leaks.
So as the doctor says, use it or lose it.
Regards,
Martin ZL1ANJ
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