Matched Pair RCA 6CL6 Vacuum Tubes Black Plate Triple 3 Mica NOS-Testing August 30 2023 new in box Raytheon 12K5

new in box Raytheon 12K5 tube tested to spec on our Paul Hart-calibrated TV7/U

This RCA 872A rectifier tube appears gently-used

This RCA black plate 6LQ6 tube tested 80 on our Paul Hart-calibrated TV7/U where minimum is 54 and new is 100

There is nothing I can say about this item except that I could not test it

46 and 52 where minimum is (65%) is 36 and 100% is 55

Matched Pair RCA 6CL6 Vacuum Tubes Black Plate Triple 3 Mica NOS-Testing August 30 2023 new in box Raytheon 12K5This new old stock testing matched pair of RCA black plate triple mica 6CL6 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 46 where minimum (65%) is 30 and 100% 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