RCA 604 7014 Vacuum Tube Valve Rectifier 12B4A Nonal It measured 78/80 where minimum

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

Plate current measured 34 milliamps with a transconductance of 4310 micromhos

I just cleaned this two (of three) record LP set on my VPI 16

new in box matched pair of Tung-Sol 12SL7 / 12SL7GT dual triodes was tested on our Pau Hart-calibrated TV7/U for shorts

RCA 604 7014 Vacuum Tube Valve Rectifier 12B4A Nonal It measured 78/80 where minimumThis 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