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This topic contains 3 replies, has 3 voices, and was last updated by Profile photo of Cameron Conover Cameron Conover 2 years, 9 months ago.

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  • #687
    Profile photo of John Ferrell
    John Ferrell
    Participant

    I have several coax jumper cables that are of unknown quality. Other than trying to use them are there any common procedures to check them out? Ohmeter checks for opens & shorts are a given. de W8CCW

  • #688
    Profile photo of Scott Toth
    Scott Toth
    Keymaster

    John, the only other way I’ve heard about personally is to use a tester called a “megger.” The testers are pretty expensive, but they’re meant to check insulation resistance, voltage, and continuity in cabling. George Thomas talks about how to use one around the 11:30 mark in this episode of Amateur Logic:

  • #689
    Profile photo of Cameron Conover
    Cameron Conover
    Moderator

    Here is how to measure length and impedance with tools I think you already have, John.

    Here’s how to check VF:

    Have fun!

  • #690
    Profile photo of Cameron Conover
    Cameron Conover
    Moderator

    In that Amateur Logic video he says OL means “Over Load” that’s not correct, OL actually means Open Loop.

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