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On Sun, 11 Apr 2010 19:56:43 -0700 (PDT), Dave Smirkenberg
wrote: Today while putzing in my attic I came across a roll of about 200 ft of 75 ohm CATV cable that I stashed there when I moved in back in 2002. Well, the reason I never used it for anything in the first place was the hassle involved in attaching reducing adapter like a UG/176-U to the aluminum foil shield. It hit me that this "wire glue" might be a decent way of doing so. If the cable is RG-59/u, consider leaving it in the attic until it rots. If it's RG-6/u, it can be used for ham radio purposes. Instead of the proposed UG-176/u to PL-259 adapter kludge, just install the correct compression type F connector on the ends of the RG-6/u and use adapters to go to PL-259 or whatever. You'll find that the 75 to 50 ohm mismatch loss is rather minimal. http://www.qsl.net/n9zia/wireless/75_ohm_hardline.html As for the wire glue, due to the lack of a suitable manufacturer and part number that can be researched, my guess(tm) is that it's much like "metallic epoxy", which is nothing more than aluminum or graphite powder mixed into the epoxy. The particles are quite far apart from each other, resulting in extremely poor conductivity. Since RF likes to flow on the surface of conductors, such glues are going to have a fairly high surface resistance, and are therefore useless for RF. -- 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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