Raytheon 5Y4 5Y4GT Vacuum Tube Black Plate Rectifier Treasure Press new in box black plate

new in box black plate DuMont 18FY6 tube tested to spec on our Paul Hart-calibrated TV7/U

Nonetheless it worked fine in my MC-3

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

This DVD / CD combination plays fine

Transconductance readings are 44

Raytheon 5Y4 5Y4GT Vacuum Tube Black Plate Rectifier Treasure Press new in box black plateThis 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