4 Sylvania 6N7 Vacuum Tubes Shoulder ST Style Lot Of Four 6K5GT Grid Cap Transconductance measured 41

Transconductance measured 41

This tube has 439 C date codes

Tubes Two through Seven tested 40/38

62 and 76 where minimum (65%) is 58 and 100% is 89

4 Sylvania 6N7 Vacuum Tubes Shoulder ST Style Lot Of Four 6K5GT Grid Cap Transconductance measured 41This lot of four Sylvania MANUFACTURED 6N7 6N7G tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and they measure as follows: 40 42, 51 52, 55 57 and 57 62 respectively. They have old fashioned "Coke" bottle; black plates; beautiful, copious flashing and wire snubbers for increased rigidity for lowered microphonics. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE