RCA 2B7 Vacuum Tube Valve NOS NIB

RCA 2B7 Vacuum Tube Valve NOS NIBThis RCA 2B7 tube is new old stock and new in box and tested to spec on our Paul Hart calibrated TV7 U. 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 ANY QUESTIONS. 1. MOST FORMS OF SHIPPING EXCEPT MEDIA MAIL ARE AUTOMATICALLY INSURED UP TO $100. ETSY PURCHASE PROTECTION COVERS ITEMS UP TO

They are still stapled in their boxes

It has a top double-O getter

This dutch auction is for the three-lamp light board (Part number 670-7280) for the Tektronix 2430A Digital Oscilloscope

This GE-MANUFACTURED

It measured an almost- perfectly-balanced 76/77 where minimum (65%) is 56/56

This Amperex World 6AQ8 ECC85 tube was tested on our Paul Hart-calibrated TV7/U for shorts

They measured 31 and 32 where minimum (65%) is 28 and 100% is 43

new in box Japanese-made 26LX6 tube tested to spec on our Paul Hart-calibrated TV7/U

From left to right

This matched pair of RCA-MANUFACTURED 5Z4 rectifier tubes were tested on our Paul Hart-calibrated TV7/U for shorts

It measured 52/50 where minimum (65%) is 40/40 and 100% is 62/62

This lot of thirteen US-made 7F7 tested poorly and/or unevenly on our Paul Hart-calibrated TV7/U