Matched Pair RCA Black Plate 5763 Vacuum Tubes 33GY7 Duodecar T52 This is a testament to

This is a testament to their high emissions

Sperry-BRANDED (SPL) 6V6GT output tubes was tested on our Maxi-Matcher 2 in Real World conditions with 400 volts on the plates and a bias of -36 volts for shorts

This Silvertone Type 235 / 35 tube was tested on our Paul Hart-calibrated TV7/U for shorts

milspec GE JG-6X4WA tested to spec on our Paul Hart-calibrated TV7/U

Transconductance measured 49/56

Matched Pair RCA Black Plate 5763 Vacuum Tubes 33GY7 Duodecar T52 This is a testament toThis matched pair of RCA black plate 5763 tubes were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 44 and 48 where minimum (65%) is 35. These tubes have gray plates and nice 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 TEXT US AT 202 372 6931 IF YOU DO