Daystrom 12AT7 ECC 81 Vacuum Tube Results= 3010/3000

Description

Daystrom 12AT7 ECC 81 Vacuum Tube
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***** Tested on our  proprietary  tester , the E3444.
It's a Triplett 3444 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 Roswell, GA  *****
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Industry Bogey transconductance = 5500/5500 µmhos
Industry Bogey plate current = 11.0/11.0mA
Results   = 3010/3000 µmhos ~ 5.3/6.0mA
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