Matched Pair Sylvania 50L6 Vacuum Tubes NOS NIB

Matched Pair Sylvania 50L6 Vacuum Tubes NOS NIBThis new old stock (from a bulk box) loosely matched pair of Sylvania 50L6 output tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 78 and Tube Two measured 84 where minimum (65%) is They both have copious quantities of flashing; O getters; gray plates; round mica spacers and anode radiators for cooler operation and longer life. They have DR and BR date codes,

" AND YOU HAVE NOT ACTUALLY RECEIVED IT

This new old stock-testing matched pair of GM-LABELED

Transconductance measured (From left to right): 46 and 48 where minimum (65%) is 30

This new old stock-testing matched pair of Hytron black glass 6V6GT output tubes was tested on our Maxi-Matcher 2 with 400 volts on the plates and a bias of -36 volts for shorts

new in box RCA milspec 5763 / JRC-5763 tubes tested to spec on our Paul Hart-calibrated TV7/U

This matched pair of industrial/milspec Raytheon black plate 5654/ 6AK5 tubes was tested on our Paul Hart-calibrated TV7/U tester

Four are American

As soon as I do

The 7189 is a more robust EL84 which is able to dissipate an extra watt or two

This new old stock-testing pair of US-made 6BG6GA output tubes was tested on our Maxi-Matcher with 400 volts on the plates and a bias of -48 volts for shorts

It measured 54/53 where minimum (65%) is 40/40 and 100% is 62/62

a top slanted-D getter and L1E date codes