Matched Pair Unitron 6AK5 5654 6J1 6J2 Vacuum Tubes NOS NIB RCA Steel Plates This matched pair of Sylvania

This matched pair of Sylvania 6BL7GT dual triodes was tested on our TV7/U for shorts

6 milliamps with a transconductance of 3060 micromhos while Tube Two measured 24

copper support rods

60 and 60 where minimum (65%) is 40

Matched Pair Unitron 6AK5 5654 6J1 6J2 Vacuum Tubes NOS NIB RCA Steel Plates This matched pair of SylvaniaThis new old stock, new in box (For Tube One) matched pair of Unitron 6AK5 tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and they tested as follows: Tube One (Unitron 5654 LABELED, likely Tung Sol MANUFACTURED) measured 31 while Tube Two (no silkscreening 6AK5 LABELED, likely Tung Sol MANUFACTURED) measured 33 where minimum (65%) is 22. Both tubes are the same on the inside with