There is no print from an American double gettering triode sold per bottle, but it is thought that it is made by GE due to the structure. Measured value 66 (rejected value 58) There is a defect in part of the mica support with replacement box, and it makes a crackling sound within the base ※The measured value shows the GM value measured with the test machine TV-7 (Kojima Yosuke)
Accessories: replacement box