[Milsurplus] Tube Nomenclature Questions

[J. Forster]

Hi,

I'm somewhat ignorant about tube nomenclature. Consider:

JAN CRC 6SK7Y

Is the CRC the Navy Manufacturer's code? Does anybody have a table of the
common ones?

Also, is there some reference for the suffix letters ( I know what GT and
G mean, but what about the other possible letters)


Thanks,

-John

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