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1. Re: [RFI] RFI on 1.8 mhz (score: 1): Author: "ukbrown@aol.com" <ukbrown@aol.com>; Date: Fri, 18 Jan 2013 08:59:33 -0500 (EST); ?Good morning to all. I? have a problem that centers on about 1.8 mhz and a bit at 3.5mhz. We have tracked it down to one neighbor house. The engergy company Xcel Energy here in Colorado cut the powe; /archives//html/RFI/2013-01/msg00081.html (7,065 bytes)
2. Re: [RFI] RFI on 1.8 mhz (score: 1): Author: "K1TTT" <K1TTT@ARRL.NET>; Date: Fri, 18 Jan 2013 15:35:07 +0000; 'normally' grow lights are on and off on a 12 hour cycle. I thought I had a 24/7 problem here that turned out to be grow lights on a 12 hour cycle because of their timing and when I was checking. If; /archives//html/RFI/2013-01/msg00082.html (9,633 bytes)
3. Re: [RFI] RFI on 1.8 mhz (score: 1): Author: "KD7JYK DM09" <kd7jyk@earthlink.net>; Date: Fri, 18 Jan 2013 20:26:56 -0800; "I hope to get a recording that I can put on this reflector to see if anyone has run into this." Total crapshoot, would need a recording at least. Kurt _______________________________________________; /archives//html/RFI/2013-01/msg00083.html (6,715 bytes)
4. Re: [RFI] RFI on 1.8 mhz (score: 1): Author: "K1TTT" <K1TTT@ARRL.NET>; Date: Sat, 19 Jan 2013 12:18:25 +0000; I'm sorry, but I don't believe simple audio recordings are very useful in many cases. the information about something that is creating interference across many Mhz that you can capture in a couple kh; /archives//html/RFI/2013-01/msg00084.html (9,227 bytes)
5. Re: [RFI] RFI on 1.8 mhz (score: 1): Author: "KD7JYK DM09" <kd7jyk@earthlink.net>; Date: Sun, 20 Jan 2013 16:10:57 -0800; I wish I knew about all this modern equipment thirty years ago... Yeah, that's nice and all, but we've done more with less forever and most people will never have what you have. Kurt _______________; /archives//html/RFI/2013-01/msg00093.html (7,364 bytes)
6. Re: [RFI] RFI on 1.8 mhz (score: 1): Author: Dave Cole <dave@nk7z.net>; Date: Mon, 21 Jan 2013 07:59:08 -0800; Still does not change the fact that most audio recordings are not very useful in pinning down a source. -- 73's and Thanks, Dave http://www.nk7z.net for equipment reviews, propagation, and more... __; /archives//html/RFI/2013-01/msg00103.html (8,139 bytes)
7. Re: [RFI] RFI on 1.8 mhz (score: 1): Author: "KD7JYK DM09" <kd7jyk@earthlink.net>; Date: Mon, 21 Jan 2013 18:32:50 -0800; Why not? They have been in the past. What would have suddenly changed? Kurt _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/li; /archives//html/RFI/2013-01/msg00107.html (7,597 bytes)
8. Re: [RFI] RFI on 1.8 mhz (score: 1): Author: Sam Morgan <k5oai.sam@gmail.com>; Date: Tue, 22 Jan 2013 06:00:37 -0600; for the last 2+ years I have been on this list I would say about 90% of the time anyone, including myself, have ask anything noise related and have offered audio recordings of the rfi for identificat; /archives//html/RFI/2013-01/msg00108.html (9,020 bytes)
9. Re: [RFI] RFI on 1.8 mhz (score: 1): Author: Roger D Johnson <n1rj@roadrunner.com>; Date: Tue, 22 Jan 2013 07:36:10 -0500; The problem with audio recordings is that many noise sources sound the same. Waveforms or a spectrum plot is often needed to pin down the source. 73, Roger the post has been met with derisive remarks; /archives//html/RFI/2013-01/msg00109.html (9,387 bytes)
10. Re: [RFI] RFI on 1.8 mhz (score: 1): Author: David Robbins <k1ttt@verizon.net>; Date: Tue, 22 Jan 2013 07:00:02 -0600 (CST); how often has anyone actually been able to identify a source from an audio recording?? cite cases... i would like to hear specific cases where the audio was enough to identify a specific source of a; /archives//html/RFI/2013-01/msg00110.html (10,398 bytes)
11. Re: [RFI] RFI on 1.8 mhz (score: 1): Author: Eddy Swynar <deswynar@xplornet.ca>; Date: Tue, 22 Jan 2013 08:05:14 -0500; Hi Guys, This whole discussion seems to have taken a life all its own... If a picture is worth a thousand words, then surely an audio recording equates to just as many. CASE CLOSED. ~73~ de Eddy VE3C; /archives//html/RFI/2013-01/msg00111.html (8,067 bytes)
12. Re: [RFI] RFI on 1.8 mhz (score: 1): Author: Michael Coslo <mjc5@psu.edu>; Date: Tue, 22 Jan 2013 10:58:00 -0500; I heard RFI on North Oak Lane in State College PA this past fall. Sort of a sweeping noise, around a second apart. I went to a web page with noise examples, and heard a duplicate of the noise, it was; /archives//html/RFI/2013-01/msg00114.html (8,626 bytes)
13. [RFI] RFI on 1.8 mhz (score: 1): Author: "Lee K7TJR" <k7tjr@msn.com>; Date: Tue, 22 Jan 2013 08:34:02 -0800; I am able to identify street lights gone amuck 100% of the time just from the sound of the audio here. Lee K7TJR _______________________________________________ RFI mailing list RFI@contesting.com h; /archives//html/RFI/2013-01/msg00115.html (8,054 bytes)
14. Re: [RFI] RFI on 1.8 mhz (score: 1): Author: David Robbins <k1ttt@verizon.net>; Date: Tue, 22 Jan 2013 11:14:16 -0600 (CST); that may be a good one. but does it have to be on a specific frequency or range of frequencies?? i have a generator that sweeps through a part of 160m at about that rate depending on load. what would; /archives//html/RFI/2013-01/msg00117.html (9,357 bytes)
15. Re: [RFI] RFI on 1.8 mhz (score: 1): Author: David Robbins <k1ttt@verizon.net>; Date: Tue, 22 Jan 2013 11:15:05 -0600 (CST); what makes a street light noise unique? I am able to identify street lights gone amuck 100% of the time just from the sound of the audio here. Lee K7TJR ______________________________________________; /archives//html/RFI/2013-01/msg00118.html (8,376 bytes)
16. [RFI] RFI on 1.8 mhz (score: 1): Author: "Lee K7TJR" <k7tjr@msn.com>; Date: Tue, 22 Jan 2013 10:11:47 -0800; Street lights for some reason have a very throaty low pitch to their sound. Although the frequency is fixed by the line voltage, the harmonic content makes the lights at least here have a very disti; /archives//html/RFI/2013-01/msg00119.html (8,643 bytes)
17. Re: [RFI] RFI on 1.8 mhz (score: 1): Author: "KD7JYK DM09" <kd7jyk@earthlink.net>; Date: Tue, 22 Jan 2013 10:17:52 -0800; "but does it have to be on a specific frequency or range of frequencies??" Usually not. When tracking RFI, we hear it because it's broadband an interfering with most everything else we want to listen; /archives//html/RFI/2013-01/msg00121.html (8,616 bytes)
18. Re: [RFI] RFI on 1.8 mhz (score: 1): Author: "KD7JYK DM09" <kd7jyk@earthlink.net>; Date: Tue, 22 Jan 2013 10:18:43 -0800; I have tracked RFI for quite some time and I disagree. Most sound different and a source can be found days week and months sooner by knowing what you are looking for, just by the sound. For example,; /archives//html/RFI/2013-01/msg00122.html (10,032 bytes)
19. Re: [RFI] RFI on 1.8 mhz (score: 1): Author: "KD7JYK DM09" <kd7jyk@earthlink.net>; Date: Tue, 22 Jan 2013 10:18:59 -0800; The sound. Kurt _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo/rfi; /archives//html/RFI/2013-01/msg00123.html (7,974 bytes)
20. Re: [RFI] RFI on 1.8 mhz (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Tue, 22 Jan 2013 10:37:30 -0800; What we "hear" on a recording and "see" in a spectrum display is the MODULATION produced by the noise source. I don't have the experience chasing noise sources that many of the RFI professionals on t; /archives//html/RFI/2013-01/msg00124.html (10,250 bytes)

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