General Electric GE 5Y3 5Y3GT Vacuum Tube Rectifier Black Plate 6CQ4 Octal T01 Transconductance measured 44 for Tube

Transconductance measured 44 for Tube One and 46 for Tube Two where minimum (65%) is 40 and 100% is 62

new in box 6BK5 tube -- and two just like it -- tested to spec on our Paul Hart-calibrated TV7/U

Transconductance measured 82 for Tube One and 84 for Tube Two where minimum (65%) is 58

new in box US-made 6KU8 tubes tested to spec on our Paul Hart-calibrated TV7/U

The remaining six are labeled "1X2A/1X2B

General Electric GE 5Y3 5Y3GT Vacuum Tube Rectifier Black Plate 6CQ4 Octal T01 Transconductance measured 44 for TubeThis 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 58 50 where minimum (65%) is 40 40 and 100% is 62 62. It has a bottom, D getter and a 4 09 188 5 date provenance 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 "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202 372 6931