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Classic Currents

(1) Tested 1960 Western Union 6SN7GTB Tube Horseshoe Getter Code 60-35 6SN7GT

(1) Tested 1960 Western Union 6SN7GTB Tube Horseshoe Getter Code 60-35 6SN7GT

Made by GE for Western Union

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(1) Tested Western Union 6SN7GTB Tube.
Date Code 60-35 (August of 1960).
The 188 EIA code indicates that this tube was made by GE for Western Union.

Gray 4 hole ladder plates with a side horseshoe getter.

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

Gm Test = 2875-2750 micromhos
Minimum pass/good = 1650-1650

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

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