RCA Cunningham Radiotron Number Type 80 Vacuum Tube Rectifier Black Plates Engraved Base Shoulder ST Shape Hanging Filaments April 10 2025 Side Four is more like

Side Four is more like a 6

There were no shorts or gas and it measured 42 where minimum (65%) is 26

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Tube One measured 46 while Tube Two measured 46 where minimum (65%) is 32 and 100% is 49

Tube One measured 64/64 while Tube Two measured 66/66 where minimum (65%) is 50/50 and 100% is 77/77

RCA Cunningham Radiotron Number Type 80 Vacuum Tube Rectifier Black Plates Engraved Base Shoulder ST Shape Hanging Filaments April 10 2025 Side Four is more likeThis RCA Cunningham Radiotron number type 80 rectifier tube was tested on our Paul Hart calibrated TV7 U. It measured 35 34 where minimum (65%) is 40 40 and 100% is 62 62. It teats below spec but should work fine in many applications. It has a dimpled sheet getter; mica snubbers; an engraved base; hanging filaments and outstanding flashing. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER