Vintage USA Tall Raytheon 6SN7 GTB Vacuum Tube Results= 2350/2700 7.2/9.7 mA

Description

Vintage USA Tall Raytheon 6SN7 GTB Vacuum Tube
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*** Tested on our  proprietary  tester , the E3444 Triplett/Westmore 501 :
i
t'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. *****
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Industry Bogey transconductance =  2600/2600
µ
mhos  &
Industry Bogey plate current =  9.0/9.0 mA
Results =
2350/2700
µ
mhos  ~   7.2/9.7 mA
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