General Electric GE 6N7 6N7G Black Plate Vacuum Tube Shoulder ST Shape VT-74 Milspec Transconductance measured 41/41 for Tube

Transconductance measured 41/41 for Tube One and 43/41 for Tube Two where minimum (65%) is 34/36 and 100% is 52/55

The dust jacket is in nice condition

new in box GE 13FM7 / 15FM7 tubes tested to spec on our Paul Hart-calibrated TV7/U

This trio of US-made 6CM7 tubes was tested on our Paul Hart-calibrated TV7 for shorts

General Electric GE 6N7 6N7G Black Plate Vacuum Tube Shoulder ST Shape VT-74 Milspec Transconductance measured 41/41 for TubeThis GE 6N7G tube was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. It measured 51 46 where minimum (65%) is 38 38 and 100% is 58 58. It has an old fashioned "Coke" bottle; black plates; beautiful, copious flashing and mica snubbers for increased rigidity for lowered microphonics. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY