Zenith 5Y4 5Y4G Vacuum Tube Black Plate Rectifier Shoulder ST-Shape Hanging Filaments Engraved Base Stamped Base Transconductance readings are 44

Transconductance readings are 44

new in box RCA 8056 Nuvistor tube tested to spec on our Paul Hart-calibrated TV7/U

PETTY AND DRACONIAN GERMAN PACKAGING REGULATIONS -- AND THE SEVERE FINES AND PRIVACY INTRUSIONS ASSOCIATED WITH THEM -- WE NO LONGER SHIP TO GERMAN ADDRESSES

new in box RCA 6U10 tube tested to spec on our Paul Hart-calibrated TV7/U

IN NEARLY 9000 SALES

Zenith 5Y4 5Y4G Vacuum Tube Black Plate Rectifier Shoulder ST-Shape Hanging Filaments Engraved Base Stamped Base Transconductance readings are 44This Zenith 5Y4G rectifier tube tested 57 54 where minimum (65%) is 40 40 and 100% is 62 62. It has the nostalgic shoulder Coke bottle glass envelope; hanging filaments; a phi shaped, top mica spacer; an engraved base; a bottom, dimple, sheet getter; excellent flashing and smooth, black plates. 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