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tube testing

  1. tutor_turtle

    Socket savers for Hickok 539C tester

    My Hickok 539C gets a lot of use. The 7-pin subminiature, 8-pin octal and 9-subminiature are so worn, I have to tilt the test tube until the line meter moves before I can be sure it connected. When I have dozens off tubes to test, this can become frustrating. The 7-pin has been replaced with a...
    • tutor_turtle
    • Thread
    • 539c hickok socket saver tube tester tube testing
    • Replies: 5
    • Forum: Tube Audio
  2. F

    KT66 Testing?

    I have some Genalex KT66's that I am testing in preparation of selling. I tested with Hickok 6000a transconductance tube tester and by installing in Quad II amps. I have a couple of tubes that test low on the Hickok 6000a, but look fine in the Quad II amp. The Hickok tester seems to be testing...
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