Matched Pair General Electric GE 6FQ7 / 6CG7 Vacuum Tubes Valves NOS NIB Copper Support Rods Top Filaments October 28 2024 I just cleaned this double

I just cleaned this double album on my VPI 16

Tubes Three and Four measured 1100 and 1150

60 and 63 where minimum (65%) is 40 and 100% is 62

These tubes have dark-gray

NOR IS THERE A WAY TO DETERMINE WHETHER THEY MAY HAVE FATAL FLAWS

Matched Pair General Electric GE 6FQ7 / 6CG7 Vacuum Tubes Valves NOS NIB Copper Support Rods Top Filaments October 28 2024 I just cleaned this doubleThis new old stock, new in box (For Tube Two) 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 74 74 while Tube Two measured 75 75 where minimum (65%) is 50 50 and 100% is 77 77. These tubes have copper support rods; top O getters, gray ladder plates; top filaments for a nice light show (please see Picture Four); three horizontal