Matched Quad RCA VT-90 JRC-6H6 VT90 6H6 Vacuum Tubes Milspec 12ED5 NOS NIB new in box matched pair

new in box matched pair of black plate GE-MANUFACTURED

These five Ken-Rad-MANUFACTURED 6U7 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

new in box matched pair of RCA 6AK5 tubes was tested on our Paul Hart-calibrated TV7/U tester for shorts

new in box Raytheon 1032 / CK1032 is one of the strangest tubes I've ever seen and I have no idea how to test it

It measured where minimum (65%) is and 100% is

Matched Quad RCA VT-90 JRC-6H6 VT90 6H6 Vacuum Tubes Milspec 12ED5 NOS NIB new in box matched pairThese matched quad of RCA milspec JRC 6H6 6H6 VT 90 6H6 tubes was tested on our Paul Hart calibrated TV7 U. They measured (from left to right) 51 50, 51 51, 51 52 and and 52 50 Minimum (65%) is 40 40 and 100% is 62 62. They are World War Two vintage and all have US Army Signal Corp SC 278 A codes. 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