Raytheon Number / Type 41 #41 Vacuum Tube Black Plate Clear Bottle Engraved Base NOS-Testing Special Director's an anode radiator for cooler

an anode radiator for cooler operation and longer tube life and a banded-cross top mica spacer

This lot of three US-made type 42 tubes was tested our Paul Hart-calibrated TV7/U for shorts

bottom mica spacers with rectangular top-mica spacers

an silkscreened base

new in box RCA 6E5 magic eye indicator tube is nice and bright

Raytheon Number / Type 41 #41 Vacuum Tube Black Plate Clear Bottle Engraved Base NOS-Testing Special Director's an anode radiator for coolerThis new old stock testing Raytheon number type 41 tube tested 61 on our Paul Hart calibrated TV7 U where minimum (65%) is 40 and 100% is 62. It has an anode radiator for cooler operation and longer tube life; an engraved base; black plates, a clear bottle; a dimple sheet getter 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 SITE "LOWTECHTWOO" AND OR CALL OR