Matched Pair General Electric GE 6005 6AQ5 Black Plate Vacuum Tubes Ken-Rad Mini 2013 Fortunately they are inert and

Fortunately they are inert and don't affect the tubes's operation

Lansdale was the manufacturing arm of Philco and sold tubes to other companies not only during the transition from tubes to solid state

new in box US-made 2GK5 / 2FQ5 / 2FQ5A tubes tested to spec on our Paul Hart-calibrated TV7/U

new in box 11FY7 tubes tested to spec on our Paul Hart-calibrated TV7/U

These five US-made

Matched Pair General Electric GE 6005 6AQ5 Black Plate Vacuum Tubes Ken-Rad Mini 2013 Fortunately they are inert andThis matched pair of GE black plate 6005 6AQ5 output tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 64 while Tube Two measured 66 where minimum (65%) is 46 and 100% is 71. These tubes have stout, shiny, ribbed black plates and stout O getters as well. It took two adapters but was worth it as they sounded fine in my Mini 2013. WE HAVE SCORES OF THOUSANDS OF VACUUM