Description
Vintage RCA 6SN7 GTB Vacuum Tube **Very Strong & Balanced** ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ *** Tested on our proprietary tester , the E3444 Triplett/Westmore 501 : i t'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 = 2600/2600 µ mhos & Industry Bogey plate current = 9.0/9.0 mA Results = 2700/2850 µ mhos ~ 8.3/9.2 mA ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Shipping $6 I have many other types of tubes Just Ask No Additional Shipping Charges All tubes Guaranteed 200 ~~~~ Please click on the link below to view more items in my store. ~~~~~~~~ GreenGirl's Guaranteed VintageTubes