Vintage RCA JRC 6189 12AU7WA Vacuum Tube Very StrongBalanced 3Mica Black Plates
$ 18.48
Description
Vintage RCA JRC 6189 12AU7WA Vacuum Tube Very StrongBalanced 3Mica Black Plates 🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼 🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼🎼 **** 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 ********************************************************************* Industry Bogey transconductance = 2200|2200µmhos Industry Bogey plate current = 10.0|10.0mA Results = 1950/2000 µmhos ~ 8.2/8.6mA ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ USA Shipping $6 I have many other types of tubes No Additional Shipping Charges ~~ I will combine all Auctions purchased All tubes Guaranteed ♪♪♫♫♫♫ Thank You! ♫♫♫♫ ♪♪ ~~~~ Please click on the link below to view more items in my store. ~~~~~~~~ GreenGirl's Guaranteed VintageTubes ov1
