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Hickok 121 Cardmatic found today.
Today was the music city vintage radio club swap meet in Nashville. I find a Hickok 121 cardmatic tube tester with a almost full tray of cards (90%). As nice as that is, there are a whole lot of tubes that i don't have cards for. 1L6, 01a, 24's 45's and plenty others. I've seen blank cards for sale on ePay but need a chart that tells you where to put the holes for each type of tube. Does anyone have that chart or database? Thanks
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