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Total 31 documents matching your query.

1. [RFI] Shielding a ground wire (score: 1): Author: Aaron Kreider <aaron@campusactivism.org>; Date: Thu, 25 Apr 2013 22:54:29 -0400; Does it ever make sense to shield a ground wire? Or is this a silly idea? I'm thinking of trying running coax to my ground rod instead of copper wire. The copper wire is picking up tons of RFI. Aaron; /archives//html/RFI/2013-04/msg00046.html (6,485 bytes)
2. Re: [RFI] Shielding a ground wire (score: 1): Author: "qrv@kd4e.com" <qrv@kd4e.com>; Date: Thu, 25 Apr 2013 23:04:01 -0400; Interesting notion to solve the problem, though I am guessing the RFI experts here may want to look at why your ground wire is getting RFI - both the sources and something about your grounding system; /archives//html/RFI/2013-04/msg00047.html (8,396 bytes)
3. Re: [RFI] Shielding a ground wire (score: 1): Author: Aaron Kreider <aaron@campusactivism.org>; Date: Thu, 25 Apr 2013 23:33:21 -0400; The ground wire is getting RFI because it's all over the house's internal AC wiring. Side note: I haven't yet tracked down any local noise sources because I rent out two apartments and I want to have; /archives//html/RFI/2013-04/msg00049.html (7,818 bytes)
4. Re: [RFI] Shielding a ground wire (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Thu, 25 Apr 2013 20:42:22 -0700; NO Or is this a silly idea? Yes. I'm thinking of trying running coax to my ground rod instead of copper wire. The copper wire is picking up tons of RFI. That suggests that something is seriously wron; /archives//html/RFI/2013-04/msg00050.html (9,076 bytes)
5. Re: [RFI] Shielding a ground wire (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Thu, 25 Apr 2013 20:56:36 -0700; That suggests you've got a lot of noise sources around the house. You're going to have to find and kill every one of them. Standard good practice is to address your own home (in this case, your own a; /archives//html/RFI/2013-04/msg00051.html (8,284 bytes)
6. Re: [RFI] Shielding a ground wire (score: 1): Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>; Date: Fri, 26 Apr 2013 00:30:18 -0700; It means that you have voltage on the ground wire , or between the wire and earth, How and where is it getting on the wire. Does the ground wire have a good low resistance earth connection. Don't for; /archives//html/RFI/2013-04/msg00052.html (9,251 bytes)
7. Re: [RFI] Shielding a ground wire (score: 1): Author: Warren Wolff <warrenwolff@aol.com>; Date: Fri, 26 Apr 2013 00:53:42 -0400 (EDT); Maybe, the ground wire is a quarter wave in length? Warren; W7WY NO Yes. That suggests that something is seriously wrong with the power wiring and/or grounding in your home, and probably with your an; /archives//html/RFI/2013-04/msg00053.html (8,853 bytes)
8. Re: [RFI] Shielding a ground wire (score: 1): Author: Michael Coslo <mjc5@psu.edu>; Date: Fri, 26 Apr 2013 18:00:31 -0400; It's possible, but I'd expect problems on only one band. But I would really look closely at that ground system. Odds are a big problem in it. - Mike - _______________________________________________; /archives//html/RFI/2013-04/msg00054.html (7,749 bytes)
9. Re: [RFI] Shielding a ground wire (score: 1): Author: Timo Toro <Toro@ibb.fi>; Date: Sat, 27 Apr 2013 07:26:24 +0000; Aaron, Figure 7 shows how to do it with coaxial cable. http://kc.flexradio.com/KnowledgebaseArticle50426.aspx 73, Timo_oh5kw I'm thinking of trying running coax to my ground rod instead of copper wir; /archives//html/RFI/2013-04/msg00061.html (8,396 bytes)
10. Re: [RFI] Shielding a ground wire (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Sat, 27 Apr 2013 09:36:30 -0700; Virtually everything in this piece is WRONG. 73, Jim K9YC Figure 7 shows how to do it with coaxial cable. http://kc.flexradio.com/KnowledgebaseArticle50426.aspx 73, Timo_oh5kw _______________________; /archives//html/RFI/2013-04/msg00062.html (8,649 bytes)
11. Re: [RFI] Shielding a ground wire (score: 1): Author: David Cole <dave@nk7z.net>; Date: Sat, 27 Apr 2013 09:51:13 -0700; Hi Jim, Thank you for the update on this... I was beginning to doubt myself here... I looked that link over and decided I was needing a full refresher in grounding methods... I spent the past day rea; /archives//html/RFI/2013-04/msg00063.html (9,178 bytes)
12. Re: [RFI] Shielding a ground wire (score: 1): Author: Danny Richardson <k6mhe@k6mhe.com>; Date: Sat, 27 Apr 2013 13:32:04 -0700; Hi Jim, I just knew, if I waited, you would jump on this one.... What really surprises me is that a supposedly high-tech company would have this posted on their web site. 73, Danny, K6MHE 73, Jim K9Y; /archives//html/RFI/2013-04/msg00064.html (9,356 bytes)
13. Re: [RFI] Shielding a ground wire (score: 1): Author: Christopher Brown <cbrown@woods.net>; Date: Sat, 27 Apr 2013 12:32:40 -0800; I just stopped and shook my head when "Scenario 1" jumped up and smacked me. Fig 1 and 2 being the same circuit, with the only diff being the possible changes in the bonding connections (possible mor; /archives//html/RFI/2013-04/msg00065.html (9,710 bytes)
14. Re: [RFI] Shielding a ground wire (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Sat, 27 Apr 2013 15:59:23 -0700; Right. In general, a connection EARTH is NOT part of a solution to RFI problems, nor does it make antennas work better (although it CAN provide a current sink for a receiving antenna, the earth is FA; /archives//html/RFI/2013-04/msg00066.html (9,357 bytes)
15. Re: [RFI] Shielding a ground wire (score: 1): Author: Timo Toro <Toro@ibb.fi>; Date: Sun, 28 Apr 2013 10:00:48 +0000; The message from QRO contest stations to quiet reception and smooth operation is GROUNDING. I mean single point grounding. And cables between various devices are provided with ferrite chokes. (mix31?; /archives//html/RFI/2013-04/msg00067.html (11,076 bytes)
16. Re: [RFI] Shielding a ground wire (score: 1): Author: "K1TTT" <K1TTT@ARRL.NET>; Date: Sun, 28 Apr 2013 11:20:30 +0000; Just keep repeating... there is no such thing as a ground for RF or Lightning. Follow that with... There are 3 types of problems to be addressed by 'Grounding'. 1. AC Safety - fairly simple... all eq; /archives//html/RFI/2013-04/msg00068.html (12,491 bytes)
17. Re: [RFI] Shielding a ground wire (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Sun, 28 Apr 2013 08:44:17 -0700; 73, Jim K9YC _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo/rfi; /archives//html/RFI/2013-04/msg00069.html (8,566 bytes)
18. Re: [RFI] Shielding a ground wire (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Sun, 28 Apr 2013 09:08:02 -0700; This is NOT a solution, it is a "band aid." The real CAUSES of the problems you are trying to solve are with improper or inadequate BONDING between equipment, and incomplete antenna systems. There is; /archives//html/RFI/2013-04/msg00070.html (9,846 bytes)
19. Re: [RFI] Shielding a ground wire (score: 1): Author: Timo Toro <Toro@ibb.fi>; Date: Sun, 28 Apr 2013 18:21:47 +0000; I did fix my problems already. My antenna systems are not incomplete. Of course more and higher masts would be nice, hi. But if I run over 1KW to my 4el Yagi on 40m and my PC stops working, I have to; /archives//html/RFI/2013-04/msg00071.html (11,183 bytes)
20. Re: [RFI] Shielding a ground wire (score: 1): Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>; Date: Sun, 28 Apr 2013 14:42:00 -0700; But if I run over 1KW to my 4el Yagi on 40m and my PC stops working, I have to fix that problem. I did not use the band aid either. Nowadays my ham shack is more like Faraday shield, hi. And lightnin; /archives//html/RFI/2013-04/msg00073.html (12,502 bytes)

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