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Classic Currents

(1) Tested RCA Victor 6L7 Tube Date Code S4 RCA VT-87 Pentagrid Mixer Tube

(1) Tested RCA Victor 6L7 Tube Date Code S4 RCA VT-87 Pentagrid Mixer Tube

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(1) Tested RCA Victor 6L7 VT-87 Tube.
Date Code S4.

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

Gm Test = 1125-1000 micromhos
Minimum pass/good = 410-410

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