Sylvania 6BQ5 EL84 Vacuum Tube Black Plate O Getter NOS-Testing RCA 6MU8 NOS NIB It measured 32/27 where minimum

It measured 32/27 where minimum (65%) is 18/18 and 100% is 28/28

new in box GE 20AQ3 / LY88 tube tested to spec on our Paul Hart-calibrated TV7/U

new in box Raytheon 12GC6 tested to spec on our Paul Hart-calibrated TV7/U

This matched pair of RCA 12SL7GT dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

new in box Raytheon 6K8 tested to spec on our Paul Hart-calibrated TV7/U

Sylvania 6BQ5 EL84 Vacuum Tube Black Plate O Getter NOS-Testing RCA 6MU8 NOS NIB It measured 32/27 where minimumThis Sylvania 6BQ5 EL84 output tube was tested on our Maxi Matcher 2 with 325 volts on the plates and a bias of 14 volts for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 8800 micromhos and late current draw was 48. 4 milliamps where new Russian EL84s typically test from the mid 20s to mid 60s with transconductance from 5000 micromhos. This tube has shiny black plates, a top O getter, copper support rods and