Vintage Zenith Sylvania EL84 6BQ5 Power Tube Very Strong

Description

Zenith EL86 6bq5 tube
***** Tested on our new proprietary  tester , the E3444 Triplett/Westmore 501 :
It's a Triplett 3444 / Westmore 501 that has been enhanced.
This tester uses regulated power sources for the bias, plate, & screen voltages, as well as modified operating & testing procedures.
Filament voltage is also controlled.
Tubes are tested in accordance with the manufacturer's specifications; measurements closely align with a laboratory tester built to rigorously measure vacuum tube characteristics.
Tubes can be accurately matched for gm & plate current at the manufacturer's specified test points or at other specified test points.
***** This tester was prepared by Mr. Paul Hart of Falls Church , Virginia. *****
*********************************************************************
Industry Bogey Transconductance = 11, 300
µ
mhos
Industry Bogey Plate Current =  48mA
Results =
11, 000
µ
mhos
~ 57mA
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