3 Sylvania 50L6 50L6GT Vacuum Tubes Valves Tall Base Coated Glass Lot Of Three Plate Cap It has copper support rods

It has copper support rods

There is also a shield between the triodes for reduced cross talk

These tubes have steel support rods

C Grafica s

34 and 35 where minimum (65%) is 25

3 Sylvania 50L6 50L6GT Vacuum Tubes Valves Tall Base Coated Glass Lot Of Three Plate Cap It has copper support rodsThis lot of three Sylvania tall base, coated glass 50L6GT tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. They measured 59, 72 and 76 where minimum (65%) is 45. This new old stock, new in box matched pair of GE 6FQ7 6CG7 dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 80 80 while Tube Two