National Union NU 2B7 Vacuum Tube Valve NOS NIB Neutrality During Paula Robison

Paula Robison

new in box Trigon UCH81 tube tested to spec on our Paul Hart-calibrated TV7/U

copious flashing and a large

58 and 60 where minimum (65%) is 42

It measured 78/80 where minimum (65%) is 50/50 and 100% is 77/77

National Union NU 2B7 Vacuum Tube Valve NOS NIB Neutrality During Paula RobisonThis National Union NU 2B7 tube tested to spec on our Paul Hart calibrated TV7 U. IN 2021 WE PURCHASED 150,000 VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUR 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 OF THE TUBES WE SELL ARE OVER 70 YEARS OLD. WE CANNOT GUARANTEE FOR FAILURES AFTER POWER UP AS THERE IS NO WAY TO DETERMINE HOW TUBES WILL