3 RCA 6K7 Vacuum Tubes Lot Of Three Milspec Black Plates Tube One: 72/78

Tube One: 72/78

One is milspec

new in box GE 6AC7 tubes tested to spec on our Paul Hart-calibrated TV7/U

This lot of four North American-made number 78 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

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

3 RCA 6K7 Vacuum Tubes Lot Of Three Milspec Black Plates Tube One: 72/78This trio of RCA 6K7 tubes were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. They measured 34, 52 and 61 where minimum (65%) is 36 and 100% is 55. These tubes all have small logos. 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 WHAT YOU NEED OR HAVE