United Electron 31LQ6 Vacuum Tube Valve NOS-Testing January 28 2026 These tubes have tall bottles

These tubes have tall bottles

outstanding flashing

Transconductance measured 85 for Tube One and 86 for Tube Two where minimum (65%) is 58

This East German pressing is pretty good

They measured 80/66

United Electron 31LQ6 Vacuum Tube Valve NOS-Testing January 28 2026 These tubes have tall bottlesThis new old stock testing United Electron 31LQ6 tube tested 120 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