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Classic Currents

(1) Tested RCA 6B7 Tube Date Code 643 RCA Twin Diode Cutoff Pentode Tube

(1) Tested RCA 6B7 Tube Date Code 643 RCA Twin Diode Cutoff Pentode Tube

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(1) Tested RCA 6B7 Tube.
Date Code 643.

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

Gm Test = 1075 micromhos
Minimum pass/good = 630
Both diode sections test at 1600 and 100 where 800 is minimum pass/good.

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