Lansdale 12AV7 Vacuum Tube NOS NIB Black Plate For Your Univalve 12FM6 Septal 2 milliamps while transconductance measured

2 milliamps while transconductance measured 2050 micromhos

Transconductance measured 82 for Tube One (6AU6A) and 84 (6AU6) for Tube Two where minimum (65%) is 58

WE HAVE HAD A DOZEN LESS-THAN-FOUR-STAR REVIEWS OR HAVE LOST A CUSTOMER BECAUSE WE REFUSED TO EITHER ISSUE A REFUND FOR A TUBE THAT WENT BAD AFTER IT HAD BEEN USED OR A BUYER KNEW NOTHING ABOUT TUBE REBRANDING AND CLAIMED THAT SOMETHING MADE

This engraved base Zenith 25A6G tube was tested on our Paul Hart-calibrated TV7/U for shorts

This GE 18A5 tube tested to spec on our Paul Hart-calibrated TV7/U

Lansdale 12AV7 Vacuum Tube NOS NIB Black Plate For Your Univalve 12FM6 Septal 2 milliamps while transconductance measuredThis new old stock, new in box Lansdale MANUFACTURED, GE LABELED 12AV7 dual triode was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 38 39 where minimum (65%) is 21 21. This tube has black plates; a D getter; terrific flashing and L2E date codes. Lansdale was the manufacturing arm of Philco and sold tubes to other companies not only during the transition from tubes