Matched Pair General Electric GE Black Plate 6CG7 6FQ7 Vacuum Tubes With Shields VT86 T67 Transconductance measured 58 for Tube

Transconductance measured 58 for Tube One and 60 for Tube Two where minimum (65%) is 40

This lot of three Western European PCF802 / 9U8 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

These tubes have crenelated rectangular mica spacers

44 and 48 where minimum (65%) is 30 and 100% is 46

Matched Pair General Electric GE Black Plate 6CG7 6FQ7 Vacuum Tubes With Shields VT86 T67 Transconductance measured 58 for TubeThis pair of GE black plate 6CG7 6FQ7 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 61 60 while Tube Two measured 68 68 where minimum (65%) is 50 50 and 100% is 77 77. These tubes have steel support rods and top, harp shaped getters and anode radiators for cooler operation and longer tube life. There is also a shield between the triodes for reduced cross