Ken-Rad 5Y4 5Y4G Vacuum Tube Black Plate Rectifier Shoulder ST-Shape 84 Eightyfour new in box Sylvania 6Z7G

new in box Sylvania 6Z7G tube tested to spec on our Paul Hart-calibrated TV7/U

Tube one measured 30 in its triode section where minimum (65%) is 25 and 100% is 38

noise or gas and it tests as follows:

Transconductance measured 8800 micromhos and late current draw was 48

Ken-Rad 5Y4 5Y4G Vacuum Tube Black Plate Rectifier Shoulder ST-Shape 84 Eightyfour new in box Sylvania 6Z7GThis Ken Rad 5Y4G rectifier tube tested 38 42 where minimum (65%) is 40 40 and 100% is 62 62. It has the nostalgic shoulder Coke bottle glass envelope; a round, top mica spacer with wire snubbers; a bottom, sheet getter; nice flashing and lightly ribbed, black 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