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21. Re: [RFI] Nest Thermostat - Think about this (score: 1)
Author: Charles Coldwell <coldwell@gmail.com>
Date: Wed, 4 Dec 2013 09:45:51 -0500
One thing almost all thermostats have in common is that they are connected to long, unshielded wires. If RFI is killing thermostats, I would be tempted to try choking those. -- Charles M. Coldwell, W
/archives//html/RFI/2013-12/msg00048.html (7,146 bytes)

22. [RFI] RFI in the news (score: 1)
Author: Charles Coldwell <coldwell@gmail.com>
Date: Thu, 5 Dec 2013 12:48:06 -0500
http://arstechnica.com/information-technology/2013/12/time-warner-cable-tv-goes-blurry-in-presence-of-verizon-lte-phones/ -- Charles M. Coldwell, W1CMC Belmont, Massachusetts, New England "Turn on, l
/archives//html/RFI/2013-12/msg00055.html (6,584 bytes)

23. Re: [RFI] RFI in the news (score: 1)
Author: Charles Coldwell <coldwell@gmail.com>
Date: Fri, 6 Dec 2013 21:26:41 -0500
I noticed that; the article says "Those channels are transmitting on the same 700MHz spectrum also used by Verizon ." Quoting Wikipedia (http://en.wikipedia.org/wiki/United_States_2008_wireless_spect
/archives//html/RFI/2013-12/msg00070.html (9,597 bytes)

24. Re: [RFI] Nature's RFI on the way. (score: 1)
Author: Charles Coldwell <coldwell@gmail.com>
Date: Fri, 12 Sep 2014 06:29:07 -0400
http://en.wikipedia.org/wiki/May_1921_geomagnetic_storm -- Charles M. Coldwell, W1CMC "Turn on, log in, tune out" Belmont, Massachusetts, New England (FN42jj) ________________________________________
/archives//html/RFI/2014-09/msg00024.html (7,641 bytes)

25. Re: [RFI] New bulb? Acandescence in Finallly bulb (score: 1)
Author: Charles Coldwell <coldwell@gmail.com>
Date: Sun, 13 Sep 2015 10:53:56 -0400
"Induction lighting starts with an insulated copper coil wrapped around a ferrite core. High frequency power from an electronic ballast is sent through the coil to produce a magnetic field which ini
/archives//html/RFI/2015-09/msg00022.html (9,277 bytes)

26. Re: [RFI] New bulb? Acandescence in Finallly bulb (score: 1)
Author: Charles Coldwell <coldwell@gmail.com>
Date: Sun, 13 Sep 2015 11:00:10 -0400
Ah, I think K8RI has cracked their code. It seems it might be just a conventional fluorescent tube sans electrodes. I would expect the emissions to be similar. -- Charles M. Coldwell, W1CMC Belmont,
/archives//html/RFI/2015-09/msg00023.html (7,673 bytes)

27. Re: [RFI] Speed Queen washer/dryers (score: 1)
Author: Charles Coldwell <coldwell@gmail.com>
Date: Tue, 8 Dec 2015 14:02:24 -0500
+1 Speed Queen. 73 de W1CMC -- Charles M. Coldwell, W1CMC Belmont, Massachusetts, New England "Turn on, log in, tune out" _______________________________________________ RFI mailing list RFI@contesti
/archives//html/RFI/2015-12/msg00063.html (7,704 bytes)

28. Re: [RFI] List of RFI free ballasts / growlights (score: 1)
Author: Charles Coldwell <coldwell@gmail.com>
Date: Wed, 2 Mar 2016 08:32:25 -0500
One good sign is that the manufacturer posted his FCC test reports http://www.galaxyballasts.com/fcc-docs.aspx -- Charles M. Coldwell, W1CMC Belmont, Massachusetts, New England "Turn on, log in, tune
/archives//html/RFI/2016-03/msg00000.html (6,745 bytes)

29. Re: [RFI] RFI via Florescent Lights (score: 1)
Author: Charles Coldwell <coldwell@gmail.com>
Date: Thu, 7 Apr 2016 07:24:51 -0400
Sounds like magnetic ballasts. I had to replace a bunch of magnetic ballasts in my basement; they were oozing potting material. I discovered that many of them contain PCBs, which has made safe dispos
/archives//html/RFI/2016-04/msg00009.html (7,595 bytes)

30. Re: [RFI] Powerline noise humps? (score: 1)
Author: Charles Coldwell <coldwell@gmail.com>
Date: Wed, 11 May 2016 11:24:00 -0400
Also known as "spread spectrum clocking" (a nice search-engine term). Lots of PLLs on the market advertise this feature. USB 3.0 uses it on the high-speed conductors to avoid the need for shielded ca
/archives//html/RFI/2016-05/msg00054.html (7,919 bytes)

31. Re: [RFI] SETI (score: 1)
Author: Charles Coldwell <coldwell@gmail.com>
Date: Tue, 30 Aug 2016 15:39:32 -0400
See also http://arstechnica.com/science/2016/08/seti-has-observed-a-strong-signal-that-may-originate-from-a-sun-like-star/ -- Charles M. Coldwell, W1CMC Belmont, Massachusetts, New England "Turn on,
/archives//html/RFI/2016-08/msg00175.html (8,235 bytes)

32. Re: [RFI] SETI (score: 1)
Author: Charles Coldwell <coldwell@gmail.com>
Date: Tue, 30 Aug 2016 15:40:19 -0400
Could be a new DXCC entity! -- Charles M. Coldwell, W1CMC Belmont, Massachusetts, New England "Turn on, log in, tune out" _______________________________________________ RFI mailing list RFI@contesti
/archives//html/RFI/2016-08/msg00176.html (8,028 bytes)

33. Re: [RFI] SETI (score: 1)
Author: Charles Coldwell <coldwell@gmail.com>
Date: Wed, 31 Aug 2016 06:44:14 -0400
Read chapter 2 http://seti.harvard.edu/grad/dpdf/thesislt.pdf "This means that with a system as described above, we can send interstellar telegrams a distance of 4000 light years for an energy cost o
/archives//html/RFI/2016-08/msg00189.html (9,320 bytes)

34. Re: [RFI] Snap-on Ferrites (score: 1)
Author: Charles Coldwell <coldwell@gmail.com>
Date: Mon, 19 Jun 2017 07:43:31 -0400
Could this have something to do with the unavoidable gap in the high-permeability material in a snap-on ferrite? The majority of the MMF is usually in the air gap. -- Charles M. Coldwell, W1CMC Belmo
/archives//html/RFI/2017-06/msg00037.html (10,470 bytes)

35. [RFI] compact fluorescent bulbs (score: 1)
Author: Charles Coldwell <coldwell@gmail.com>
Date: Mon, 16 Dec 2019 05:02:53 -0500
I bought a pair of compact fluorescent bulbs at a big box retailer (*) and when I opened the box, a slip of paper with this note on it fell out: "This device complies with Part 18 of the FCC Rules. I
/archives//html/RFI/2019-12/msg00101.html (7,881 bytes)

36. [RFI] Mr. Carlson's Lab: coffee maker RFI (score: 1)
Author: Charles Coldwell <coldwell@gmail.com>
Date: Fri, 14 Jan 2022 01:24:39 -0500
Pretty interesting https://youtu.be/f3dGStQuI7c <https://youtu.be/f3dGStQuI7c> -- Charles M. Coldwell, W1CMC "Turn on, log in, tune out" Belmont, Massachusetts, New England (FN42jj) _________________
/archives//html/RFI/2022-01/msg00020.html (6,520 bytes)

37. Re: [RFI] Mr. Carlson's Lab: coffee maker RFI (score: 1)
Author: Charles Coldwell <coldwell@gmail.com>
Date: Fri, 14 Jan 2022 07:56:17 -0500
If you watch the whole video (spoiler alert!), at the end he kills the RFI by shunting the AC with some capacitors and increasing the value of a cap coupling the AC ground with the DC ground on the o
/archives//html/RFI/2022-01/msg00022.html (9,614 bytes)

38. Re: [RFI] Mr. Carlson's Lab: coffee maker RFI (score: 1)
Author: Charles Coldwell <coldwell@gmail.com>
Date: Tue, 18 Jan 2022 12:03:10 -0500
Paul Carlson also did a whole video on noise (RFI and EMI) https://youtu.be/tS7SvoT8Ivw His videos are slow moving, but the man's genius always shines through. Plus the audio is superb; you can tell
/archives//html/RFI/2022-01/msg00029.html (9,812 bytes)

39. Re: [RFI] RFI to AM and ham freqs in new vehicles (score: 1)
Author: Charles Coldwell <coldwell@gmail.com>
Date: Mon, 22 May 2023 15:20:29 -0400
This was in an email from the New York Times Major automakers are eliminating AM radio from new vehicles, arguing the antiquated system is unnecessary and is incompatible with electric engines. But H
/archives//html/RFI/2023-05/msg00014.html (17,444 bytes)

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