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Unkinking Coax
On Sat, 18 Oct 2014 08:28:26 -0600, Irv Finkleman VE6BP
wrote: I have a length of rg-58/u which was rolled up and when unrolled has revealed some kinks. Has anyone any idea on how to smooth things out again. It shows good on my analyzer, and I'm not worried about a bit of migration which may have taken place. A bit of loss is of no real concern to me. Someone suggested letting it rest in a tub of hot water for a while, but that is the only suggestion so far. As long as the kinks are only in the outer jacket, I wouldn't worry about it. However, if it appears that the braid is also kinked or wrinkled, you might be right about the center wire migration. If you have a TDR (time domain reflectometer), it will show an impedance bump where the center wire has moved. Such cold flow tends to happen with RG-58a/u solid center conductor cable and low loss foam dielectric. I've only seen it once and you have to roll it into a really small tight coil before that will happen. It also requires rigidly attached coax connectors to produce migration. (Open coax ends just cause the center wire to telescope in and out). -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
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