Matched Pair Westinghouse 5U4 5U4GB Vacuum Tubes Valves Rectifier Black Plates JANCNU807 shorts and gas

shorts and gas

This lot of three US-made number 78 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

minimum (65%) is 1495

one is Japanese

Transconductance measured 67 for Tube One and 68 for Tube Two where minimum (65%) is 40 and 100% is 62

Matched Pair Westinghouse 5U4 5U4GB Vacuum Tubes Valves Rectifier Black Plates JANCNU807 shorts and gasThis matched pair of Westinghouse 5U4GB rectifier tubes was tested on our Paul Hart calibrated TV7 U. Tube One measured 57 58 while Tube Two measured 58 58. Minimum (65%) is 40. They have top D getters; nice flashing; black plates; top crenelated, rectangular mica spacers and bottom smooth, rectangular mica spacers. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND