4 Pilot Tungsram EL84 6BQ5 Vacuum Tubes Austria    

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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 Falls Church , Virginia. *****

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Industry Bogey transconductance = 11,300 µmhos  

         Industry Bogey plate current =  48mA

                                           Results = 

                                                            10,550 µmhos ~ 42mA

                                                            10,450 µmhos ~ 38mA

                                                             9900 µmhos ~ 38mA

                                                          11,400 µmhos ~ 47mA

Unlimited combined Shipping USA $6 ~ Higher Overseas

All tubes are Guaranteed

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