Raytheon 50L6 50L6GT Vacuum Tube Valve Black Bottle NOS NIB Backup T40

Raytheon 50L6 50L6GT Vacuum Tube Valve Black Bottle NOS NIB Backup T40This new old stock, new in box Raytheon black bottle 50L6GT tube tested to spec 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

This lot of eight 6CG7 / 6FQ7 dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

Tube One: 31

This Amperex 8020 half-wave rectifier tube was tested on our Paul Hart-calibrated TV7/U

This matched pair of milspec/industrial GE 5814A / 12AU7 / ECC82 dual triodes was tested on our Hickok 800 for shorts

This new old stock-testing Raytheon 6L7 tube was tested on our Paul Hart-calibrated TV7/U for shorts

Transconductance measured 58 for Tube One and 60 for Tube Two where minimum (65%) is 40

These three Sylvania 7J7s tested to spec on our Paul Hart-calibrated TV7/U

They tested as follows: 56 and 58 where minimum (65%) is 395 and 100% is 60

short bases

Transconductance: 2710 micromhos

new in box 8JV8 tubes tested to spec on our Paul Hart-calibrated TV7/U

new in box Realistic (Radio Shack) Gold Clad 6BL8 / ECF80 tube tested to spec on our Paul Hart-calibrated TV7/U