On Aug 25, 2006, at 5:17 PM, Tom W8JI wrote:
>> ASSUMPTION: The 3-500ZG has a short, and or the
>> tube is not receiving the proper bias voltage during off
>> periods . The glowing while in standby is due to the
>> current draw across the plate; dissipating ~400W.
>
> Sounds like a grid/ filament short. As others have said,
> that was pretty common with Amperex 3-500Z's.
Passing the buck.
>
> 73 Tom
>
>
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R L MEASURES, AG6K. 805-386-3734
r@somis.org
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