RCA 604 7014 Vacuum Tube Valve Rectifier 12B4A Nonal and 34 on our Paul

and 34 on our Paul Hart-calibrated TV7/U where minimum (65%) is 25

These tubes test poorly but should work in many applications

They tested (from left to right

Tube One measured 76/73 while Tube Two measured 79/72 where minimum (65%) is 50/50 and 100% is 77/77

RCA 604 7014 Vacuum Tube Valve Rectifier 12B4A Nonal and 34 on our PaulThis RCA 604 7014 rectifier tube looks only slightly used. Sold as is. It 66 26 date codes and steel or tantalum plates. 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