5 General Electric GE 6CL6 Vacuum Tubes Black Plate Lot Of Five July 13 2024 is very quiet and has

is very quiet and has only the occasional pop and tick

These tubes have acid-etched codes and designations as well as silk-screened 68-26 188-5 67-50 production run/provenance codes

This Sylvania 7F7 was tested on our Paul Hart-calibrated TV7/U for shorts

Tube One measured 31 while Tube Two measured 32 where minimum (65%) is 22 and 100% is 34

This lot of seven US-made 12B4A tubes were tested on our Paul Hart-calibrated TV7/U for shorts

5 General Electric GE 6CL6 Vacuum Tubes Black Plate Lot Of Five July 13 2024 is very quiet and hasThis lot of GE black plate 6CL6 tubes were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured (From left to right): 36, 40, 40, 44 and 48 where minimum (65%) is 30 and 100% is 46. 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 NOT SEE