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1. [RFI] Re: BPL interference with public safety (score: 1): Author: Tim Groat <tcgroat@earthlink.net>; Date: Sat, 17 Jul 2004 09:53:11 -0600; To cite a specific case, the California Highway Patrol uses VHF-Low band radios (around 45MHz). This band covers the remote mountain and desert areas using fewer fixed sites than would be needed for; /archives//html/RFI/2004-07/msg00063.html (7,538 bytes)
2. [RFI] Re: GFI Outlets (score: 1): Author: Tim Groat <tcgroat@earthlink.net>; Date: Tue, 27 Jul 2004 22:12:32 -0600; GFCIs had a (rescinded) immunity standard, NEMA PP1-86 <http://www.nema.org/index_nema.cfm/563/?type=standard&pageid=7D30F99E-C55A-4933-B2CC37A5D63EAF9F&node=608>. This standard was much different fr; /archives//html/RFI/2004-07/msg00185.html (7,554 bytes)
3. [RFI] Re: Overload (was: Ferrite Loops) (score: 1): Author: Tim Groat <tcgroat@earthlink.net>; Date: Thu, 19 Aug 2004 23:36:52 -0600; "Ward Silver" <hwardsil@centurytel.net>: If they are receiving interference on just one or two channels, it's a harmonic. With a LPF, your troubles should be over. Often true, but not necessarily...; /archives//html/RFI/2004-08/msg00041.html (7,580 bytes)
4. [RFI] Re: Ferrite Beads (score: 1): Author: Tim Groat <tcgroat@earthlink.net>; Date: Tue, 19 Oct 2004 19:38:55 -0600; Consider U-cores, such as those in TV set flyback transformers. These are usually high-mu Mn-Zn cores. Check the junk box and ham swaps, or ask for a dead flyback at the TV repair shop (if you can fi; /archives//html/RFI/2004-10/msg00067.html (6,488 bytes)
5. [RFI] Re: Ferrite Beads (score: 1): Author: Tim Groat <tcgroat@earthlink.net>; Date: Thu, 21 Oct 2004 21:13:31 -0600; Unless the ferrite has very high mu (in the thousands), the gap effect isn't large. A quick estimate: assume a core having .50" ID, 1.00" OD, 2.36" mean magnetic path length (Le), and mu=100. Relucta; /archives//html/RFI/2004-10/msg00080.html (8,526 bytes)
6. [RFI] Re: Final Re about smell tests (score: 1): Author: Tim Groat <tcgroat@earthlink.net>; Date: Mon, 25 Oct 2004 22:55:42 -0600; Eddie, I'm curious if you measured the "noise pulses" with a quasi-peak receiver or spectrum analyzer. That is what the FCC specifies for Part 15 devices at HF. The QP detector has a fast-attack, slo; /archives//html/RFI/2004-10/msg00125.html (7,149 bytes)
7. [RFI] Re: TVI (score: 1): Author: Tim Groat <tcgroat@earthlink.net>; Date: Sun, 16 Jan 2005 12:37:00 -0700; Ron Feutz <feutz@wctc.net>: I put #43 torroids on both the CAT5 input and the power lead (about 12 turns each), and grounded the chassis of the digital convertor to the center screw of the AC outlet,; /archives//html/RFI/2005-01/msg00031.html (7,179 bytes)
8. Re: [RFI] HF Mobile Installation in 2001 Mazda (score: 1): Author: Tim Groat <tcgroat@earthlink.net>; Date: Sat, 05 Feb 2005 18:33:31 -0700; The benefit you'll most likely see from running power leads to the battery is reduced alternator whine. It isn't likely to affect the car's CPUs, but it can make the radio sound bad. This is an audio; /archives//html/RFI/2005-02/msg00025.html (8,164 bytes)
9. [RFI] Re: Whirlpool Duet Washing Machine RFI update (score: 1): Author: Tim Groat <tcgroat@earthlink.net>; Date: Sat, 12 Feb 2005 11:34:48 -0700; It's not certain the board has a "low voltage side". Motor drive circuits often have the low voltage control power tied to a primary side circuit. Since the appliance has no accessible conductors (I/; /archives//html/RFI/2005-02/msg00055.html (7,969 bytes)
10. Re: [RFI] electric fence interference (score: 1): Author: Tim Groat <tcgroat@earthlink.net>; Date: Wed, 30 Mar 2005 18:32:25 -0700; Typical electric fence problems are plant growth touching the wire, wire falling out of insulators and arcing to other fence parts, improvised "insulators" made from who knows what scrap material, ru; /archives//html/RFI/2005-03/msg00118.html (8,235 bytes)

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