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Total 33 documents matching your query.

1. [RFI] Quidance on finding noise? (score: 1): Author: Kenny Silverman <kenny.k2kw@gmail.com>; Date: Tue, 7 Jan 2020 23:55:11 -0500; Hi and thanks in advance! Weve been trying to track down some noise at a friends house but no luck so far and I was hoping for some tips on finding it. The buzz comes on at sundown and turns off at s; /archives//html/RFI/2020-01/msg00036.html (7,623 bytes)
2. Re: [RFI] Quidance on finding noise? (score: 1): Author: donovanf@starpower.net; Date: Wed, 8 Jan 2020 00:08:07 -0500 (EST); Hi Kenny, The RFI you describe certainly appears to be triggered by sunset, either a streetlight or one or more outdoor lights in a residence. Night time only RFI is extremely rare on power lines. Yo; /archives//html/RFI/2020-01/msg00037.html (9,222 bytes)
3. Re: [RFI] Quidance on finding noise? (score: 1): Author: Don Kirk <wd8dsb@gmail.com>; Date: Wed, 8 Jan 2020 03:38:36 -0500; Hi Kenny, I normally use portable HF radio with portable tuned loop and preamp on 160 or 80 meters to triangulate on power line noise and then back the RF gain down as I get close and sometimes use m; /archives//html/RFI/2020-01/msg00038.html (10,372 bytes)
4. Re: [RFI] Quidance on finding noise? (score: 1): Author: Don Kirk <wd8dsb@gmail.com>; Date: Wed, 8 Jan 2020 03:47:47 -0500; Kenny, I should also mention that I did have to track down noise from faulty light pole (problem only between sunset and sunrise), and same setup I use for power line noise worked great to find the s; /archives//html/RFI/2020-01/msg00039.html (11,011 bytes)
5. Re: [RFI] Quidance on finding noise? (score: 1): Author: AA5CT via RFI <rfi@contesting.com>; Date: Wed, 8 Jan 2020 10:53:45 +0000 (UTC); I have found power line noise sources on 160 all the way out to 5 miles. Here's a list of some of the more notable sources found over the last decade or so: https://powerlinenoiseallentexas.wordpress; /archives//html/RFI/2020-01/msg00040.html (9,496 bytes)
6. Re: [RFI] Quidance on finding noise? (score: 1): Author: Kenny Silverman <kenny.k2kw@gmail.com>; Date: Wed, 8 Jan 2020 06:52:25 -0500; Thanks for the replies so far. Just to reiterate, the noise is only from sunset to sunrise and its constant. So its likely lighting related, but it doesnt cycle. Have there been examples of constant; /archives//html/RFI/2020-01/msg00041.html (12,552 bytes)
7. Re: [RFI] Quidance on finding noise? (score: 1): Author: Michael Martin <mike@rfiservices.com>; Date: Wed, 08 Jan 2020 06:54:35 -0500; Can you send a wav file, about 15 - 30 seconds, AM Get BlueMail for Android _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/lis; /archives//html/RFI/2020-01/msg00042.html (10,709 bytes)
8. Re: [RFI] Quidance on finding noise? (score: 1): Author: Kenny Silverman <kenny.k2kw@gmail.com>; Date: Wed, 8 Jan 2020 07:14:21 -0500; Sure, tonight after the noise starts. Should have done that in the first place. Regards , Kenny K2KW _______________________________________________ RFI mailing list RFI@contesting.com http://lists.c; /archives//html/RFI/2020-01/msg00043.html (11,549 bytes)
9. Re: [RFI] Quidance on finding noise? (score: 1): Author: Don Kirk <wd8dsb@gmail.com>; Date: Wed, 8 Jan 2020 07:31:37 -0500; Hi Ken, I helped W9TC locate a street light that was causing interference on HF that sounded just like power line noise. Noise only during hours of darkness, and it was on continuous. The bad light p; /archives//html/RFI/2020-01/msg00044.html (14,377 bytes)
10. Re: [RFI] Quidance on finding noise? (score: 1): Author: Don Kirk <wd8dsb@gmail.com>; Date: Wed, 8 Jan 2020 07:46:01 -0500; Hi Ken, One last comment or clarification. I do agree that looking at the audio signature ahead of time is useful to help decide if the noise looks like power line type noise as that provides a clue; /archives//html/RFI/2020-01/msg00045.html (15,406 bytes)
11. Re: [RFI] Quidance on finding noise? (score: 1): Author: Dave Cole <dave@nk7z.net>; Date: Wed, 8 Jan 2020 07:02:34 -0800; Download S-Meter Lite, and run it for at least week or more, more is better, watch the start and end times of the RFI. If they stay rock solid, the problem is probably on a timer, if they are shiftin; /archives//html/RFI/2020-01/msg00047.html (12,410 bytes)
12. Re: [RFI] Quidance on finding noise? (score: 1): Author: Kenny Silverman <kenny.k2kw@gmail.com>; Date: Wed, 8 Jan 2020 10:44:27 -0500; Thanks Dave! This looks like a great tool. Regards , Kenny K2KW _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo/rfi; /archives//html/RFI/2020-01/msg00048.html (13,641 bytes)
13. Re: [RFI] Quidance on finding noise? (score: 1): Author: Steve London <n2icarrl@gmail.com>; Date: Wed, 8 Jan 2020 08:56:35 -0700; Actually, that's not correct, yet. Thanks to this : https://en.wikipedia.org/wiki/Analemma#Earliest_and_latest_sunrise_and_sunset the latest sunrise has not yet occurred. The earliest sunset occurred; /archives//html/RFI/2020-01/msg00049.html (8,802 bytes)
14. Re: [RFI] Quidance on finding noise? (score: 1): Author: Dave Cole <dave@nk7z.net>; Date: Wed, 8 Jan 2020 08:10:31 -0800; https://www.timeanddate.com/sun/usa/eugene 73, and thanks, Dave (NK7Z) https://www.nk7z.net ARRL Volunteer Examiner ARRL Technical Specialist ARRL Asst. Director, NW Division, Technical Resources Act; /archives//html/RFI/2020-01/msg00050.html (9,594 bytes)
15. Re: [RFI] Quidance on finding noise? (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Wed, 8 Jan 2020 09:51:43 -0800; On 1/8/2020 4:46 AM, Don Kirk wrote: I do agree that looking at the audio signature ahead of time is useful to help decide if the noise looks like power line type noise as that provides a clue about; /archives//html/RFI/2020-01/msg00051.html (10,670 bytes)
16. Re: [RFI] Quidance on finding noise? (score: 1): Author: Dave Cole <dave@nk7z.net>; Date: Wed, 8 Jan 2020 12:51:39 -0800; Jim, One of our local Old Timers, showed me a neat trick... He took a milk carton, cut in half horizontally, then wrapped foil around the inside and outside of the milk carton. This left a rather nic; /archives//html/RFI/2020-01/msg00052.html (11,668 bytes)
17. Re: [RFI] Quidance on finding noise? (score: 1): Author: Kenny Silverman <kenny.k2kw@gmail.com>; Date: Thu, 9 Jan 2020 09:56:33 -0500; A few people asked for a recording of the noise, which is posted here: https://m.youtube.com/watch?feature=youtu.be&v=Hht3peCne9Y Regards , Kenny K2KW _______________________________________________; /archives//html/RFI/2020-01/msg00053.html (17,223 bytes)
18. Re: [RFI] Quidance on finding noise? (score: 1): Author: Don Kirk <wd8dsb@gmail.com>; Date: Thu, 9 Jan 2020 11:45:43 -0500; Hi Ken, Using 3 different audio software tools, I come up with a frequency of 60 Hertz, not 120 Hertz. Typically power line noise has bursts at a frequency of 120 hertz (arcing each half of the sine; /archives//html/RFI/2020-01/msg00054.html (11,717 bytes)
19. Re: [RFI] Quidance on finding noise? (score: 1): Author: Kenny Silverman <kenny.k2kw@gmail.com>; Date: Thu, 9 Jan 2020 12:10:14 -0500; Don, I am very appreciative of you time and insight! Tonight were going out with a Kx3 and 160m loop, hopefully we can find it this time. With the AM radio we found a few nearby options to check firs; /archives//html/RFI/2020-01/msg00055.html (13,642 bytes)
20. Re: [RFI] Quidance on finding noise? (score: 1): Author: AA5CT via RFI <rfi@contesting.com>; Date: Thu, 9 Jan 2020 17:43:10 +0000 (UTC); Don, Can you feed this video's audio into the analysis software and see what it gives? As can be clearly seen there is a 'pulse' for each 1/2 cycle of the AC waveform, or two pulses for a complete cy; /archives//html/RFI/2020-01/msg00056.html (13,032 bytes)

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