Testing a old RCA 201A on a heathkit TT1A?

TENER

Well-Known Member
Can you test old 1920's RCA 201A tubes on a Heathkit TT1A? If so does anyone have the tube data for the heathkit to do it? Thanks
 
I usually ohm those things out first. Should get low resistance across the two fat pins, and no resistance between anything else. If that checks good, its not open filament or obviously shorted. If it reads open across the two fat pins, try re-soldering the ends of the pins. I've had that work more than a few times.
 
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