Raytheon 5Y4 5Y4GT Vacuum Tube Black Plate Rectifier Treasure Press Transconductance readings are 44

Transconductance readings are 44

new in box RCA 10JA5 tube tested to spec on our Paul Hart-calibrated TV7/U

2/2160 where new 6F6s measure from approximately 2000 micromhos with plate current draw in the 20s

new in box Sylvania 15KY8 tested to spec on our Paul Hart-calibrated TV7/U

This album sounded pretty good

Raytheon 5Y4 5Y4GT Vacuum Tube Black Plate Rectifier Treasure Press Transconductance readings are 44This Raytheon 5Y4GT rectifier tube tested 62 54 where minimum (65%) is 40 40 and 100% is 62 62. It has a rectangular, top mica spacer; a bottom S getter and dark gray plates. 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 IF YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY QUESTIONS. 1. MOST FORMS OF SHIPPING EXCEPT MEDIA MAIL ARE