Matched Pair Unitron 6AK5 5654 6J1 6J2 Vacuum Tubes NOS NIB RCA Steel Plates Transconductance measured 49/49 where minimum

Transconductance measured 49/49 where minimum (65%) is 36/36

new in box Mullard-MANUFACTURED

68 and 71 where minimum (65%) is 46

All have JABO codes

Matched Pair Unitron 6AK5 5654 6J1 6J2 Vacuum Tubes NOS NIB RCA Steel Plates Transconductance measured 49/49 where minimumThis 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