***** 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 = 1600|1600µmhos  

 

        Industry Bogey plate current = 1.2|1.2mA

                                            Results =1405|1460µmhos ~.93|.99mA

                                                       =1540|1590 µmhos ~ 1.10|1.18mA

                                                       =1605|1420  µmhos  ~ 1.22|1.01mA

                                                       =1320|1260  µmhos ~ .88|.82mA                                                                                                                                                                                                                        

                                                                                                                     

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