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tv-7 tube tester

  1. pixelriffic

    Hickok TV-7/U Low readings

    Just bought this tester from Ebay. It was sold as serviced and calibrated. I was tested a number of known good 6CA7s, and it consistently showed about 5 ticks below the value in the guide. Worth noting that these tubes have been checked by two other testers. Small signal tubes, 12AX7s for...
  2. Garry777

    Adding Ferrite Beads to TV-7B/U Tube Tester (to stop oscillations)

    Does anyone have knowledge about adding ferrite bead(s) to a TV-7B/U Tube Tester circuit to stop oscillation in a tube being tested. I'm having problems with an old 6L6GB tube that goes into oscillation when tested on my TV-7B/U tube tester. I know that a ferrite bead is used on a wire going...
    • Garry777
    • Thread
    • tube tester oscillation tv-7 tube tester
    • Replies: 4
    • Forum: Tube Audio
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