Cunningham 5Y3 5Y3G Vacuum Tube Rectifier Black Plate ST Shoulder Shape April 25 2022 There were made by Sovtek's

There were made by Sovtek's predecessor during The Cold War and

new in box Philco 25CU6 / 25BQ6 / 25BQ6GTB tube -- and another just like it -- tested to spec on Paul Hart-calibrated TV7/U

WE HAVE THOUSANDS OF VINTAGE ELECTRONIC ITEMS

Transconductance measured 44 and 44 where minimum (65%) is 35

Cunningham 5Y3 5Y3G Vacuum Tube Rectifier Black Plate ST Shoulder Shape April 25 2022 There were made by Sovtek'sThis black plate Cunningham 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 50 53 where minimum (65%) is 40 40 and 100% is 62 62. It has a nifty, old fashioned Coke bottle; a dimple sheet getter, excellent flashing and an X2 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