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I have a couple of 01A's and an extra 201A. I spent some time juggling tubes, trying to find the "best" one for the detector. Didn't find any configuration that improved the sound. I did notice that at least two of the tubes I was using also have some cloudiness and I put them in the RF slots. For what it's worth, all but one of the tubes shows transconductance above or near my tester's "replacement point," but I do understand that the best tube tester is the radio itself. There are still tube configurations which I haven't tried yet, so I'll go back to that soon. Thanks
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Winky Dink
Damn the patina,
Full speed ahead!
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