RCA 12AU7 5963 Black Plates D-Getter Vacuum Tube 1954 1600/1720 µmhos 9.0/10.2mA
$ 7.92
Description
RCA 5963 12AU7 Black Plates D-Getter Vacuum Tube 1954 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ***** Tested on our new proprietary tester , the E3444 Triplett/Westmore 501 : 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. ***** ********************************************************************* Industry Bogey transconductance = 2200/2200 µ mhos & Industry Bogey plate current = 10.0/10.0 mA Results = 1600/1720 µ mhos ~ 9.0/10.2 mA ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 𝄞 𝄞 𝄞 𝄞 𝄞 𝄞 𝄞 𝄞 𝄞 𝄞 𝄞 𝄞 𝄞 𝄞 𝄞 USA Shipping $6 I have many other types of tubes ~ No Additional Shipping Charges All tubes are Guaranteed 326 ~~~~ Please click on the link below to view more items in my store. ~~~~~~~~ GreenGirl's Guaranteed VintageTubes
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