Sylvania Number / Type 85 #85 Engraved / Stamped Base Vacuum Tube

Sylvania Number / Type 85 #85 Engraved / Stamped Base Vacuum TubeThis Sylvania type 85 tube was tested on our Paul Hart calibrated TV7 U for shorts, gas, emissions and transconductance. There were no shorts or gas. It measured 42 in its triode section where minimum (65%) is 25 and 100% is 39. The diodes measured 54 and 56, respectively, where minimum (65%) is 40 40 and 100% is 61 61. 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"

I have played it in my Alan Eaton single-ended 45 amplifier with an adapter and it sounds outstanding

Thia new old stock

This matched trio of Raytheon 5Z4 rectifier tubes were tested on our Paul Hart-calibrated TV7/U for shorts

Tube One drew 27

bottom D getters and copper support rods

These tubes have steel support rods

please select "5

I can test it if you can send info on the process

saucer getters

Tube One: 63/64

clear glass 6K6GT tubes was tested on our Maxi-Matcher tube tester with 325 volts on the plates and a bias of -36 volts

Tube Three (diodes): 79/40