General Electric GE 5Y3 5Y3GT Vacuum Tube Rectifier Black Plate JAN3Q4 Milspec This watch must be serviced

This watch must be serviced

new in box Sylvania 32ET5 tested to spec on our Paul Hart-calibrated TV7/U

new in box Zenith 6JH8 tubes tested to spec on our Paul Hart-calibrated TV7/U

It sounds excellent with only the very-occasional pop and tick in the quiet musical passages

This Westinghouse 7B4 tube tested to spec on our Paul Hart-calibrated TV7/U

General Electric GE 5Y3 5Y3GT Vacuum Tube Rectifier Black Plate JAN3Q4 Milspec This watch must be servicedThis black plate GE 5Y3GT 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 55 where minimum (65%) is 40 40 and 100% is 62 62. It has a top, D getter, excellent flashing and 58 39 188 5 date factory codes. 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 OR CALL OR TEXT US AT