Ken-Rad Number / Type 80 #80 Vacuum Tube Rectifier Black Plate ST Shoulder Shape Earthling's Guide To It has perforated plates

It has perforated plates

The dust jacket looks new -- as does the book itself

Tube One measured 30 while Tube Two measured 32 where minimum (65%) is 22 and 100% is 49

new in box GE 6SS7 tube tested to spec on our Paul Hart-calibrated TV7/U

It had no shorts or gas and measured 52/52 for Tube One and 56/56 for Tube Twoo where minimum (65%) is 40/40 and 100% is 62/62

Ken-Rad Number / Type 80 #80 Vacuum Tube Rectifier Black Plate ST Shoulder Shape Earthling's Guide To It has perforated platesThis Ken Rad number 80 rectifier tube was tested on our Paul Hart calibrated TV7 U for shorts, gas and emissions. There were no shorts or gas. It measured 62 52 where minimum (65%) is 40 40. 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