RCA 5963 long plate plates tube, 17mm 1950s vintage, tests strong

Tested on a Hickok 539B tube tester for mutual conductance

Date code: 4-13

2800/2600 uM micromohos 

1950 uM micromhos mutual conductance per section is the minimum acceptable Gm value per section.

Please note the 539B tube tester is analog, so the test values may differ slightly from tester to tester.

Values are added as a means to show the tubes indeed tests as new, not an exact science. Your results can/may vary.