Discussion in '"Boat Anchor" & Classic Equipment' started by KI7WQH, Feb 6, 2021.
You took the photo in post #8?
Sorry - never noticed that ! (I only saw the videos he posted with the lid on, to show the arcing)
And I agree - those look like Cetron 572Bs. (as fitted originally in these Amps by Yaesu)
Yes, I switched to some other tubes I knew worked to eliminate that as a possibility