Matched Quad RCA VT-90 JRC-6H6 VT90 6H6 Vacuum Tubes Milspec 12ED5 NOS NIB beefy black plates: side O

beefy black plates: side O getters

45/49 and 48/48 on our Paul Hart-calibrated TV7/U where minimum (65%) is 40/40

They have late 1930s retro styling with coke bottle glass envelopes and mesh plates

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

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

Matched Quad RCA VT-90 JRC-6H6 VT90 6H6 Vacuum Tubes Milspec 12ED5 NOS NIB beefy black plates: side OThese 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