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Total 12 documents matching your query.

1. [RFI] DFing an HF RFI source (score: 1): Author: "Kelly Johnson" <n6kj.kelly@gmail.com>; Date: Mon, 2 Oct 2006 16:56:41 -0700; I have an RFI source in my neighborhood that I'd like to track down, but could use some advice. The noise source sounds like a "click" or small burst of energy at approximately 1Hz. In other words, I; /archives//html/RFI/2006-10/msg00008.html (7,128 bytes)
2. Re: [RFI] DFing an HF RFI source (score: 1): Author: "Stu Benner" <w3stu@myactv.net>; Date: Mon, 2 Oct 2006 21:22:33 -0400; Kelly, This is not a direct answer to your question but may lead you down a path to the source. My first guess at the source of this problem would be an electric fence, which would be an impulse (bro; /archives//html/RFI/2006-10/msg00009.html (9,673 bytes)
3. Re: [RFI] DFing an HF RFI source (score: 1): Author: "Kelly Johnson" <n6kj.kelly@gmail.com>; Date: Mon, 2 Oct 2006 18:26:59 -0700; Thanks for the suggestion, but an electric fence would be highly unlikely here in this suburban city of 30,000. A more likely culprit would be an electric blanket. The noise I hear sounds VERY simila; /archives//html/RFI/2006-10/msg00010.html (10,513 bytes)
4. Re: [RFI] DFing an HF RFI source (score: 1): Author: Hardy Landskov <n7rt@cox.net>; Date: Mon, 02 Oct 2006 18:57:47 -0700; Kelly, I had a noise like that in the neighborhood but it could not have been an electric fence since this is not farm land. It turned out to be a device that pulsed the ground around a neighbor's ho; /archives//html/RFI/2006-10/msg00011.html (9,107 bytes)
5. Re: [RFI] DFing an HF RFI source (score: 1): Author: Peter Burbank <nv4v@adelphia.net>; Date: Tue, 03 Oct 2006 03:35:28 -0400; Kelly, FWIW I have 2 evil devices at my QTH that emit a burst about once per second. Both are battery chargers. One is a very common Wally World auto battery charger and the other is a Bell South rem; /archives//html/RFI/2006-10/msg00012.html (7,535 bytes)
6. Re: [RFI] DFing an HF RFI source (score: 1): Author: "Richard (Rick) Karlquist" <richard@karlquist.com>; Date: Tue, 3 Oct 2006 20:00:12 -0700; I had pretty good luck with a receiving loop (the so-called "shielded" loop made of coax). Orient for a null and the RFI is broadside to the loop. Rick N6RK __________________________________________; /archives//html/RFI/2006-10/msg00013.html (9,555 bytes)
7. Re: [RFI] DFing an HF RFI source (score: 1): Author: "Wes Attaway (N5WA)" <wesattaway@bellsouth.net>; Date: Tue, 3 Oct 2006 22:17:55 -0500; Kelly: You didn't say whether or not you walked the neighborhood at the same time you could hear the signal using your beam. I assume you did, which raises a question .... If you heard it with your r; /archives//html/RFI/2006-10/msg00014.html (10,456 bytes)
8. Re: [RFI] DFing an HF RFI source (score: 1): Author: "Kelly Johnson" <n6kj.kelly@gmail.com>; Date: Tue, 17 Oct 2006 08:22:22 -0700; Thanks. I was able to track the source down to one of 3 houses using a whip antenna. I'll need something more directional to narrow it down further OR go house to house. The houses are about 200 yard; /archives//html/RFI/2006-10/msg00016.html (10,816 bytes)
9. Re: [RFI] DFing an HF RFI source (score: 1): Author: Pete Smith <n4zr@contesting.com>; Date: Tue, 17 Oct 2006 14:13:43 -0400; In my experience, 1-Hz "ticks" are almost always an electric stock fence with a problem, such as a wet post or weeds partially shorting it to ground, causing an arc. However, they aren't band-specifi; /archives//html/RFI/2006-10/msg00018.html (12,642 bytes)
10. Re: [RFI] DFing an HF RFI source (score: 1): Author: "Kelly Johnson" <n6kj.kelly@gmail.com>; Date: Tue, 17 Oct 2006 11:27:47 -0700; Maybe, but in this suburban city of 30,000 people electric fences are pretty rare :-) Electric blankets tend to have 1Hz "ticks" too. If I can narrow it down to one house I may be able to talk to the; /archives//html/RFI/2006-10/msg00019.html (13,420 bytes)
11. Re: [RFI] DFing an HF RFI source (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Tue, 17 Oct 2006 14:36:24 -0400; Same here. As a rule arcs, as created in a poorly installed fence, are very wide bandwidth with very gradual level changes as receiver frequency is varied. Tics that are band specific or periodic in; /archives//html/RFI/2006-10/msg00021.html (9,177 bytes)
12. Re: [RFI] DFing an HF RFI source (score: 1): Author: "Rick Karlquist" <richard@karlquist.com>; Date: Tue, 17 Oct 2006 12:25:32 -0700 (PDT); We currently have an intermittent problem with an electric fence. However, it is high up and doesn't seem to have weeds growing on it. Can there be a problem if there is a poor splice in the wire suc; /archives//html/RFI/2006-10/msg00024.html (9,911 bytes)

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