04-06-2016, 11:15 AM
I have a 600A and some 43s. All I have to do is remember to test some. I'll try them on the 533 and TV7 too. If shorts are found I can try them on a Superior 612 (different brand tester, not Hickok circuit). I know I have at least 1 NIB.
I vaguely remember seeing this while testing tubes for my Spartons, 61, 62, 59 so on---
I vaguely remember seeing this while testing tubes for my Spartons, 61, 62, 59 so on---