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Classic Currents

(1) Tested 1963 GE 6SN7GTB Tube Red Letters Gray Plates O Getter 63-04 6SN7GT

(1) Tested 1963 GE 6SN7GTB Tube Red Letters Gray Plates O Getter 63-04 6SN7GT

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(1) Tested GE 6SN7GTB Tube.
Red Letters. Date Code 63-04 (January of 1963).

Red letter base with gray ladder plates and a side O ring getter.

Tested on a calibrated Hickok TV-10 military tube tester with no shorts and no leaks with the following results:

Gm Test = 3000-2750 micromhos
Minimum pass/good = 1650-1650

Also performance tested in-circuit through a Class A amplifier with no microphonics detected.

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