Matched Pair Ken-Rad 6SL7 6SL7GT Vacuum Tubes January 01 2022 This book is in fine

This book is in fine condition

These tubes have O getters

new in box GE 6CL6 tubes tested to spec on our Paul Hart-calibrated TV7/U

5 milliamps and transconductance was 2480 micromhos for Tube One

Minimum (65%) is 50

Matched Pair Ken-Rad 6SL7 6SL7GT Vacuum Tubes January 01 2022 This book is in fineThis perfectly matched pair of Ken Rad 6SL7GT dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Both tubes measured 42 42 where minimum (65%) is 32 32 and 100% is 49 49. They have steel plates; steel support rods; 1 25 188 5 and 1 04 188 5 date provenance codes; solid top mica spacers; side harp getters; tall bases; medium bottles and excellent flashing. These tubes were made