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Total 8 documents matching your query.

1. Topband: coil wire oxidation (score: 1): Author: "Bruce" <k1fz@verizon.net>; Date: Fri, 06 Apr 2007 17:05:31 +0100; I have two Johnson 229-203 rotary inductors that I want to use in a 160 tuning network. One has somewhat oxidized wire. Wire size is about #12, composition unknown. Anyone know of a real good way to; /archives//html/Topband/2007-04/msg00043.html (7,046 bytes)
2. Re: Topband: coil wire oxidation (score: 1): Author: "Dan Zimmerman N3OX" <n3ox@n3ox.net>; Date: Fri, 6 Apr 2007 13:49:20 -0400; Try to determine if they're silver plated. If they are, don't sweat the oxidation: http://www.qsl.net/n9zia/why_silver_plate.html Dan _______________________________________________ Topband mailing l; /archives//html/Topband/2007-04/msg00044.html (7,046 bytes)
3. Re: Topband: coil wire oxidation (score: 1): Author: W8AV@aol.com; Date: Fri, 6 Apr 2007 13:54:34 EDT; I would soak it in Tarnex. That will clean it up. 73...........de Goose, W8AV ** See what's free at http://www.aol.com. _______________________________________________ Topband mailing list Topband@co; /archives//html/Topband/2007-04/msg00045.html (6,491 bytes)
4. Re: Topband: coil wire oxidation (score: 1): Author: Peter Burbank <nv4v@adelphia.net>; Date: Fri, 06 Apr 2007 15:01:06 -0400; Bruce, I had heard that the oxide was conductive and that didn't seem right as I always heard popping and cracking as I rolled my tuner to rough out the right setting. Then I saw a post that it was a; /archives//html/Topband/2007-04/msg00046.html (8,154 bytes)
5. Re: Topband: coil wire oxidation (score: 1): Author: David Gilbert <rimradio@direcway.com>; Date: Fri, 06 Apr 2007 13:31:34 -0700; I came across the reference below from http://www.g3ynh.info/zdocs/comps/refs.html (about one fourth of the way down the page): "Re: Communication from Roy Lewallen, W7EL, which was as follows: AgS h; /archives//html/Topband/2007-04/msg00048.html (9,885 bytes)
6. Re: Topband: coil wire oxidation (score: 1): Author: Ken Brown <ken.d.brown@hawaiiantel.net>; Date: Fri, 06 Apr 2007 10:54:47 -1000; Okay, so now the wire is clean and shiny. What about the ceramic form on which the coil is wound? Isn't there now going to be a residue of silver oxide or other possibly conductive crud left between; /archives//html/Topband/2007-04/msg00049.html (8,106 bytes)
7. Re: Topband: coil wire oxidation (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Sat, 7 Apr 2007 09:11:13 -0400; Let's take this all into the perspective of the real world .Many things interact to determine coil Q, but among all of them the plating or tarnish on the wire surface seems to be one of the least imp; /archives//html/Topband/2007-04/msg00054.html (9,704 bytes)
8. Re: Topband: coil wire oxidation (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Sat, 7 Apr 2007 10:10:06 -0400; Not true at all in an inductor!!! Anything that increases capacitance between turns, even a virtually lossless dielectric, decreases Q. This is because capacitance shunting a coil or part of a coil; /archives//html/Topband/2007-04/msg00058.html (9,842 bytes)

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