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Bob and John, this is great!
As a reminder, I'm donating a couple of dud 21AX's that can be guinea pigs if that is useful at some point. The 21AX of mine you have and are bringing to Hilliard was a Scotty rebuild attempt and goes to air over a period of days. The other one I'm bringing is gassy (blue glow at max test voltage, cathodes shot), but not enough to burn out the filaments, and may have got that way over a period of decades.
See you at ETF!
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