National Union NU 14J7 Vacuum Tube Valve NOS NIB JANCKR6AG7 Transconductance measured 21

Transconductance measured 21

but most should work in most circuits

6 milliamps with a transconductance of 3060 micromhos while Tube Two measured 24

Test results to follow

an additional mica spacer for low microphonics

National Union NU 14J7 Vacuum Tube Valve NOS NIB JANCKR6AG7 Transconductance measured 21This new old stock, new in box National Union 14J7 tube tested to spec on our Paul Hart calibrated TV7 U. BECAUSE OF THE BIZARRE, INTRUSIVE, CRUEL AND DRACONONIAN GERMAN PACKAGING REGULATIONS AND THE SEVERE FINES AND PRIVACY INTRUSIONS ASSOCIATED WITH THEM WE NO LONGER SHIP TO GERMAN ADDRESSES. WE WILL HAPPILY SEND YOUR PACKAGE TO A NEIGHBORING COUNTRY OR MAKE SUITABLE ARRANGEMENTS. IN 2021 WE PURCHASED 150,000 VACUUM TUBES. IF IT'S NOT LISTED, WE