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Questions about tubes and gear that glows. FAQ

A lot of the depends on the tester you are using and its operational points

1400 to 1600 sounds about right for new on the Heathkit TT-1..The Hickok 539c is also great for testing dual triodes,especially with the noise test and an AM radio..






"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken


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