Engraved Croydon #45 VACUUM Tube
***** Tested on our 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 = 2175 ยตmhos &
Industry Bogey plate current = 34 mA
Results =
1780 ยตmhos ~ 28 mA
Unlimited combined Shipping USA $6 ~ Higher Overseas
All tubes unconditionally Guaranteed
Thank you
๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐
202
.
GreenGirl's Guaranteed VintageTubes