General Electric GE 5Y3 5Y3G Vacuum Tube Rectifier Black Plate ST Shoulder Shape 8FQ7 8CG7 new in box US-made 12BD6

new in box US-made 12BD6 tubes tested to spec on our Paul Hart-calibrated TV7/U

1 milliamps with a transconductance of 2260 micromhos while Tube Two measured 23

nearly-perfectly-matched pair of JJ 6V6S output tubes was tested on our Maxi-Matcher 400 volts on the plates and a bias of -36 volts for shorts

They are the new

They measured 46

General Electric GE 5Y3 5Y3G Vacuum Tube Rectifier Black Plate ST Shoulder Shape 8FQ7 8CG7 new in box US-made 12BD6This black plate GE 5Y3G rectifier tube was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. It measured 40 40 where minimum (65%) is 40 40 and 100% is 62 62. It has a nifty, old fashioned Coke bottle; dimple sheet getter, outstanding flashing and a 43 C2 date code. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE