Matched Pair Hytron 6V6 6V6GT Vacuum Tubes Black Glass 6JM6A Compactron new in box Raytheon 12K5

new in box Raytheon 12K5 tube tested to spec on our Paul Hart-calibrated TV7/U

It measured a nearly-perfectly-balanced 84/82 where minimum (65%) is 50/50 and 100% is 77/77

28/27 and 33/26 where minimum (65%) is 18/18

new in box Raytheon 6DS4 nuvistor tube tested to spec on our Paul Hart-calibrated TV7/U

Matched Pair Hytron 6V6 6V6GT Vacuum Tubes Black Glass 6JM6A Compactron new in box Raytheon 12K5This 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, gas and transconductance. There were no shorts or gas and they tested as follows: Tube One (missing centering pin keyway): Tube Two: Plate current draw: 20. 5 milliamps Plate current draw: 21 milliamps Transconductance: 2200 micromhos Transconductance: 2270 micromhos (New US made 6V6s typically