Feedlines

[John Ferrell]

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

[Scott Toth]

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:

[Cameron Conover]

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

Here’s how to check VF:

Have fun!

[Cameron Conover]

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

[Author]

Posts