Sylvania 5Y3 5Y3GT Vacuum Tube Rectifier Black Plate Pental Grid Cap 00 1 6P5GT: $7

00                                                                                              1 6P5GT: $7

It is a strange bird with well over an inch of space above the top mica spacer

This trio of US-made 6X4 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

This lot of four of GE black plate 6CL6 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

FOR EXAMPLE

Sylvania 5Y3 5Y3GT Vacuum Tube Rectifier Black Plate Pental Grid Cap 00 1 6P5GT: $7This Sylvania 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 54 53 where minimum (65%) is 40 40 and 100% is 62 62. This tube has a top D getter, short base; massive plates and an EG MHT date code. 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. IF IT'S NOT