JJ 5U4 5U4GB Vacuum Tube Rectifier NOS NIB

JJ 5U4 5U4GB Vacuum Tube Rectifier NOS NIBThis new old stock, new in box JJ 5U4GB rectifier tube tested 52 51 in Sections One and Two, respectively, on our Paul Hart calibrated TV7 U where minimum (65%) is 40 40. It has a top double O getter; a round mica spacers and gray 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

This lot of three Sylvania-MANUFACTURED number 19 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

This Sylvania Number 80 was tested on our Paul Hart-calibrated TV7

This new old stock-testing matched pair of milspec Raytheon black glass VT-107-A / JAN-CRP-6V6-GT output tubes was tested on our Maxi-Matcher 2 with 400 volts on the plates and a bias of -36 volts for shorts

It has a dimpled

Transconductance measured a perfectly-balanced 72/72 where minimum (65%) is 56/56 and 100% is 86/86

Meine Seele Hort Im Sehen

45 and 48 where minimum is (65%) is 36 and 100% is 55

For sale are three new old stock

new in box Telefunken 12AL5 tube tested to spec on our Paul Hart-calibrated TV7/U

They tested as follows: 56/32

The Superior-tested tube measured "low to medium-good

This new old stock-testing Tung-Sol clear bottle type / number 38 tube tested 54 on our Paul Hart-calibrated TV7/U where minimum (65%) is 26 and 100% is 40