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Total 8 documents matching your query.

1. [RFI] Switching Power Supply test Video (score: 1): Author: Michael Coslo <mcoslo@comcast.net>; Date: Sun, 7 Aug 2016 12:45:46 -0400; I have produced a video on my YouTube channel regarding testing of a Switching Power Supply to ascertain potential RF interference. This particular test is of an Alinco DM-330MV and the radio is a Fl; /archives//html/RFI/2016-08/msg00036.html (6,977 bytes)
2. Re: [RFI] Switching Power Supply test Video (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Sun, 7 Aug 2016 10:02:05 -0700; Hi Mike, Thanks for the video and the link. I stopped watching by the time you were looking at 40M. Some criticisms -- 1) there's no information about antennas in use, or how close they were to the s; /archives//html/RFI/2016-08/msg00037.html (9,522 bytes)
3. Re: [RFI] Switching Power Supply test Video (score: 1): Author: "Paul Christensen" <pchristensen@ieee.org>; Date: Sun, 7 Aug 2016 13:30:00 -0400; the shack. And that's probably the most influential factor. The proximity of the SMPS to antennas, lines, and equipment mean everything. We often hear/see reports that "brand X" supply is quiet and; /archives//html/RFI/2016-08/msg00038.html (7,362 bytes)
4. Re: [RFI] Switching Power Supply test Video (score: 1): Author: Michael Coslo <mcoslo@comcast.net>; Date: Sun, 7 Aug 2016 15:54:49 -0400; The antenna is a 96 foot doublet roughly 55 feet above the radio, and directly above it. Fed with ladder line. One of the most important aspects of this is that I make no assertion that there is no h; /archives//html/RFI/2016-08/msg00039.html (9,263 bytes)
5. Re: [RFI] Switching Power Supply test Video (score: 1): Author: Cortland Richmond <ka5s@earthlink.net>; Date: Sun, 7 Aug 2016 18:24:52 -0400; Since reception depends on uncontrollable parameters of propagation, antenna system and receiver performance, adjacent-channel rejection, etc., there are NO quantified definitions of harmful interfer; /archives//html/RFI/2016-08/msg00040.html (10,009 bytes)
6. Re: [RFI] Switching Power Supply test Video (score: 1): Author: Michael Coslo <mcoslo@comcast.net>; Date: Sun, 7 Aug 2016 21:08:37 -0400; Absolutely correct. Id go as far as to suggest that the least applicable - if even the most accurate method of measuring that sort of thing is the tightly controlled laboratory environment because by; /archives//html/RFI/2016-08/msg00042.html (8,710 bytes)
7. Re: [RFI] Switching Power Supply test Video (score: 1): Author: Bill Steffey NY9H <ny9h@arrl.net>; Date: Tue, 16 Aug 2016 09:56:26 -0400; nice video Mike, I missed what and where your antenna is located and how far , relative to the location of the Alinco PS. bill/3 At 12:45 PM 8/7/2016, Michael Coslo wrote: I have produced a video on; /archives//html/RFI/2016-08/msg00129.html (8,834 bytes)
8. Re: [RFI] Switching Power Supply test Video (score: 1): Author: Michael Coslo <mcoslo@comcast.net>; Date: Tue, 16 Aug 2016 11:14:54 -0400; The antenna is a 96 foot doublet, fed with ladder line. Its about 55 feet above ground, so about 52 feet directly above the Alinco. I also have a club switch mode supply, the MFJ4225 that I will make; /archives//html/RFI/2016-08/msg00130.html (9,509 bytes)

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