- 1. Re: [RFI] RFI Emissions Standards for LED Drivers / Switching PS. (score: 1)
- Author: Joseph Bouchard <joek1vw@gmail.com>
- Date: Mon, 14 Dec 2020 18:10:46 -0500
- I noticed the FCC commissioner the US senate recently confirmed (by 49 to 46 votes, along party lines?) is a lawyer with a history as a financial advisor, no mention of an Electrical Engineering back
- /archives//html/RFI/2020-12/msg00025.html (9,562 bytes)
- 2. Re: [RFI] 3" ID core for RFI suppression (score: 1)
- Author: Joseph Bouchard <joek1vw@gmail.com>
- Date: Tue, 29 Dec 2020 20:51:07 -0500
- Howard, If it were me, and I have a bunch of 240-31s, I would make a short extension cord with the cores I have. Id start with 1, go to 2 if necessary. If you have to order something, you might as we
- /archives//html/RFI/2020-12/msg00125.html (9,869 bytes)
- 3. Re: [RFI] Pole mounted lightning arresters? (score: 1)
- Author: Joseph Bouchard <joek1vw@gmail.com>
- Date: Tue, 12 Jan 2021 10:54:53 -0500
- Agreed. Mine showed up as spikes on the waterfall, I think it was a harmonic of about 10khz. The Switching power supply was on the unit was a bigger problem than the fence wire itself. ______________
- /archives//html/RFI/2021-01/msg00058.html (10,873 bytes)
- 4. Re: [RFI] Invisible dog fence RFI (score: 1)
- Author: Joseph Bouchard <joek1vw@gmail.com>
- Date: Mon, 18 Jan 2021 12:05:50 -0500
- We have one at my house. A couple of toroids silenced it almost completely, but I dont have ground antennas. In my case the wall wart power supply for the transmitter was 80% of the noise and the bur
- /archives//html/RFI/2021-01/msg00088.html (9,689 bytes)
- 5. Re: [RFI] Fwd: RF hardened ethernet cards? (score: 1)
- Author: Joseph Bouchard <joek1vw@gmail.com>
- Date: Wed, 20 Jan 2021 12:18:08 -0500
- At the factory where I work we obtained some opto-isolators for serial ports and Ethernet. Plasma spray systems generate a lot of noise and burn out things occasionally. _____________________________
- /archives//html/RFI/2021-01/msg00095.html (9,149 bytes)
- 6. Re: [RFI] Raspberry PI / Wall wart RFI (score: 1)
- Author: Joseph Bouchard <joek1vw@gmail.com>
- Date: Sat, 3 Apr 2021 08:16:25 -0400
- We have a bunch of Raspberry Pi 3B at work which are powered off the USB port of the Dell monitor they are plugged into, so I think the draw is quite low on a bare Pi. A standard USB port provides 50
- /archives//html/RFI/2021-04/msg00012.html (9,634 bytes)
- 7. Re: [RFI] Line noise vs Frequency (score: 1)
- Author: Joseph Bouchard <joek1vw@gmail.com>
- Date: Sun, 8 Aug 2021 11:16:32 -0400
- Hi, Here is a thought... because most of us struggle with noise on the low bands we tend to use chokes which were designed to suppress common mode currents on the low bands effectively, and if it sup
- /archives//html/RFI/2021-08/msg00008.html (8,540 bytes)
- 8. Re: [RFI] Not your typical invisible fence RFI (score: 1)
- Author: Joseph Bouchard <joek1vw@gmail.com>
- Date: Sun, 23 Jan 2022 11:41:39 -0500
- Don, Our invisible fence is the typical 10khz variety, but I found a 3 layer approach worked well... each did a bit of reduction, and together it was enough. Maybe that multi layer approach can help
- /archives//html/RFI/2022-01/msg00034.html (10,222 bytes)
- 9. Re: [RFI] [cwops] LORAN? 7027 (score: 1)
- Author: Joseph Bouchard <joek1vw@gmail.com>
- Date: Mon, 10 Apr 2023 20:57:34 -0400
- S7-S9 in southern Maine too, and same width. Joe K1VW _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo/rfi
- /archives//html/RFI/2023-04/msg00016.html (9,819 bytes)
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