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RCA roundie test jig
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05-03-2011, 10:02 PM
marty59
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Join Date: May 2008
Location: Arlington, Tx
Posts: 915
Seems kinda' strange that it has a 21FJ in it..I wonder if that is a used tube replacement from another set?
I can't say that I've seen one of those before...interesting piece!
marty59
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