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In Reply to: RE: I would not use an emissions tester. . . posted by John PA on November 21, 2014 at 19:29:57
That B&K tester is more or less a miniaturized version of the old drug store tube testers when we were kids.This is why I like my Heathkit TT-1.It puts almost twice the B+ voltage across the tube as opposed to my 539B Hickok..
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when needed, like some of the good European testers and the Heathkit you mentioned. I do have two 539C's, one like new, almost never used in the past and a more used one but both calibrated and work great as well as my new (due to never functioning correctly until Dan Nelson fixed it 8 years ago) TV10 U. I don't remember what the 539C puts on the tube.
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I agree John..The Euro testers put much more voltage on the tube..The 539c puts 150 across a KT88 where the Heathkit TT-1 puts 275 across a KT88.
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Found this info on the B&K 606
The emission quality test is a cathode emission test, where approx 60 VAC is connected between control grid and cathode.
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