RCA Mullard EL34 6CA7 Vacuum Tube "xf4" Very Strong

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***** Tested on our proprietary tube tester, the E3444.

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. *****

Mr. Hart maintains all of our testers exclusively.

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Industry Bogey transconductance = 11,000 µmhos  

        Industry Bogey plate current = 100 mA

                                           Results = 

                                                            14,200 µmhos  ~ 104  mA

                                                                                                                     

 USA Shipping $6

I have many other types of tubes  ~  No Additional Shipping Charges

All tubes Guaranteed

Thank you   

 

 

 


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