> could go up as they are used. In the 25 or 30 years of buying
> from my local supply house, I can recall no failures of this type.
> Since there are fakes of eveything from baby formula to designer
> clothes--is it possible that there are knockoffs that even the good
> dealers do not know about?? After many many years with no
> failures, I find this frequency of failure very odd. Tommy WD4K
Of course that happens, and not just with cheap parts.
One company sold Chinese 3-500Z's that were labeled "made in
A company named "Penta-Labs" (there were a few Penta Labs
around) obtained dud or old Eimac (and GE) transmitting tubes and
replated them, straighten out the physical appearance, renumbered
them, and sold them as new tubes. This was the reason Eimac
started stamping a logo in the top of the tubes, or internally in
Companies also make bad runs of parts.
73, Tom W8JI
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