RCA Cunningham Radiotron Number Type 80 Vacuum Tube Rectifier Black Plates Engraved Base Shoulder ST Shape Hanging Filaments VT-93 Grid Gap 54/54 and 54/54 where minimum

54/54 and 54/54 where minimum (65%) is 40/40

new in box RCA 6B10 tubes tested to spec on our Paul Hart-calibrated TV7/U

They have 626 and 5-43 188-5 date codes/EIA code

This new old stock-testing matched pair of RCA 6FQ7 / 6CG7 dual triodes was tested on our TV7/U for shorts

These four US-made 3BZ6 tubes tested to spec on our Paul Hart-calibrated TV7/U

RCA Cunningham Radiotron Number Type 80 Vacuum Tube Rectifier Black Plates Engraved Base Shoulder ST Shape Hanging Filaments VT-93 Grid Gap 54/54 and 54/54 where minimumThis RCA Cunningham Radiotron number type 80 rectifier tube was tested on our Paul Hart calibrated TV7 U. It measured 38 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