Silvertone 5Y3 5Y3GT Vacuum Tube Rectifier Black Plate 12Q7 Octal Transconductance measured 49/50 for Tube

Transconductance measured 49/50 for Tube One and 50/50 for Tube Two (RCA-LABELED)

Tube One tested 40 in Section One and 44 in Section Two

This perfectly-matched pair of RCA gray plate 5763 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

" AND YOU HAVE NOT ACTUALLY RECEIVED IT

Silvertone 5Y3 5Y3GT Vacuum Tube Rectifier Black Plate 12Q7 Octal Transconductance measured 49/50 for TubeThis Silvertone 5Y3GT black plate rectifier tube was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. It measured 58 56 where minimum (65%) is 40 40 and 100% is 62 62. This tube has a bottom D getter and an E9M date code which means it was likely made by Sylvania. Im playing it now in one of my Radio Craftsman RC 2 mono blocks and it sounds great. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES.