General Electric GE 5Y3 5Y3GT Vacuum Tube Rectifier Black Plate JAN3Q4 Milspec This Westinghouse 7B4 tube tested

This Westinghouse 7B4 tube 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

Its lugs are 15 MM wide and the watch itself is 20 MM wide excluding the winding stem

This new old stock-testing matched pair of Philips Miniwatt PCF80 / 9U8 tubes was tested on our Paul Hart-calibrated TV7 for shorts

was made in China

General Electric GE 5Y3 5Y3GT Vacuum Tube Rectifier Black Plate JAN3Q4 Milspec This Westinghouse 7B4 tube testedThis 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