RCA Clear Top 6CG7 6FQ7 Vacuum Tube With Shields NOS-Testing 2nd Quarter BW22 I just cleaned this double

I just cleaned this double album on my VPI 16

Transconductance measured 57 for Tube One and 65 for Tube Two where minimum (65%) is 36 and 100% is 55

The Zenith is hermetically-sealed and could not be tested

I have listened to it in my Bottlehead Crack headphone amplifier and it sounded great

outstanding flashing

RCA Clear Top 6CG7 6FQ7 Vacuum Tube With Shields NOS-Testing 2nd Quarter BW22 I just cleaned this doubleThis new old stock testing RCA clear top 6CG7 6FQ7 dual triode was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. It measured a nearly perfectly balanced 84 82 where minimum (65%) is 50 50 and 100% is 77 77. This tube has steel support rods; a side D; a clear top; gray plates and excellent flashing. There is a shield between the triodes for reduced cross talk. I have played it in my Schiit