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RE: New Production tubes often fall outside factory specs

That is not unusual even on old stock tubes. For example I have tested probably near 1000 NOS GE 6550As - a very fine tube - and cathode current varied by as much as 110%. Others would vary a bit more.

That variance is not a big deal at all - and it is NOT unique to current production tubes.

If you like variance look at modern solid state devices. By comparison tubes are close!!


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  • RE: New Production tubes often fall outside factory specs - Jim McShane 08:01:45 03/29/17 (0)

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