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(1) Tested Strong 1964 Philco 6BQ5 Tube Date Code 6421 Beam Power Vacuum Tube

(1) Tested Strong 1964 Philco 6BQ5 Tube Date Code 6421 Beam Power Vacuum Tube

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(1) Tested Philco 6BQ5 Tube.
Date Code 6421 (21st week of 1964).

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

Gm Test = 7500 micromhos
Minimum pass/good = 4500

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