Sylvania Number / Type 80 Vacuum Tube Rectifier Shoulder ST Style Black Plates

Sylvania Number / Type 80 Vacuum Tube Rectifier Shoulder ST Style Black PlatesThis Sylvania Number 80 was tested on our Paul Hart calibrated TV7. It measured 50 54 where minimum (65%) is 40 It has a shoulder ST bottle; a bottom, D getter; beautiful flashing and a silkscreened base. 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

This perfectly-matched pair of new old stock

This tube has black plates

Transconductance measured (From left to right): 36

This Sylvania Number 80 was tested on our Paul Hart-calibrated TV7

Etsy will indicate the number available

45 and 48 where minimum is (65%) is 36 and 100% is 55

This Zenith 6HF5 tube -- and another just like it -- tested to spec on our Paul Hart-calibrated TV7/U

It has shiny black plates

" "I Shall Go Down The Street

This lot of five RCA 6SK7 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

new in box RCA 14Q7 tubes tested to spec in our Jackson 648 Mutual Conductance tester

copper support rods and gray plates