Kim Elmore wrote:
>
The original Eimac tube shows no grid-to-anything shorts.
It's been my experience that some Eimac 3-500z's develop grid-cathode shorts
when they are hot, which then go way when the tube is cool. Although normally
this failure doesn't produce the light show that you had, considering the amount
of modification that your unit has, who knows?
73,
Vic, K2VCO
Fresno CA
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