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181. Re: [RFI] EMI-Free Vehicle Inverters (score: 1): Author: David Eckhardt <davearea51a@gmail.com>; Date: Mon, 23 Mar 2020 19:36:44 +0000; How much power (watts) are you shopping for? I presume you are going from a 12 vdc system to a 120 vac/60 Hz system? Dave - WØLEV -- *Dave - WØLEV* *Just Let Darwin Work* *Just Think* _______________; /archives//html/RFI/2020-03/msg00042.html (8,058 bytes)
182. Re: [RFI] EMI-Free Vehicle Inverters (score: 1): Author: David Eckhardt <davearea51a@gmail.com>; Date: Tue, 24 Mar 2020 16:57:48 +0000; I know you're looking for a 1 kW unit, but I have the following I use camping and I must admit its pretty quiet, RFI wise: https://www.amazon.com/Go-Power-GP-SW300-12-300-Watt-Inverter/dp/B001539BCE/; /archives//html/RFI/2020-03/msg00046.html (10,192 bytes)
183. Re: [RFI] Oven RFI help needed (score: 1): Author: David Eckhardt <davearea51a@gmail.com>; Date: Wed, 22 Apr 2020 23:19:19 +0000; Find the wiring harness (likely a ribbon cable) that services the touch panel and install multiple ferrites to that cable, all cables to that module. No promise, but clearly, you've isolated the prob; /archives//html/RFI/2020-04/msg00063.html (9,389 bytes)
184. [RFI] "INTENTIONAL" RFI (score: 1): Author: David Eckhardt <davearea51a@gmail.com>; Date: Thu, 14 May 2020 13:40:32 -0600; See "What's New" under this URL link from "Electromagnetic Interference" magazine: https://mail.google.com/mail/u/0/#inbox/FMfcgxwHNMbfGCZqmrlCkJczqNxpsDWQ In case the link from my email doesn't prod; /archives//html/RFI/2020-05/msg00034.html (19,131 bytes)
185. Re: [RFI] Samsung oven RFI update number II (score: 1): Author: David Eckhardt <davearea51a@gmail.com>; Date: Fri, 22 May 2020 12:56:22 -0600; Try escalating it as a safety issue and a possible fire hazard. That might get more attention as it involves lawyers and liabilities. Dave - WØLEV -- *Dave - WØLEV* *Just Let Darwin Work* ___________; /archives//html/RFI/2020-05/msg00067.html (20,664 bytes)
186. Re: [RFI] RV converter noise (score: 1): Author: David Eckhardt <davearea51a@gmail.com>; Date: Tue, 26 May 2020 15:32:55 -0600; I do not know what your power requirements are and would assume a 12 vdc to 120 vac / 60-Hz inverter. However, I use a 300-watt inverter (for small loads). It is a GoPower Model GPSW-300 and is spiff; /archives//html/RFI/2020-05/msg00113.html (7,712 bytes)
187. Re: [RFI] LED RFI solved (score: 1): Author: David Eckhardt <davearea51a@gmail.com>; Date: Mon, 24 Aug 2020 16:02:08 +0000; The present state of affairs at FCC is to ignore Part 15 with the possible exception of intentional radiators like WiFi, Zigbee,.... Please have a read of my QRZ page (WØLEV), especially the last and; /archives//html/RFI/2020-08/msg00027.html (12,797 bytes)
188. Re: [RFI] LED RFI solved (score: 1): Author: David Eckhardt <davearea51a@gmail.com>; Date: Mon, 24 Aug 2020 18:04:09 +0000; Yes, same experience here, Kurt!! "How many do you need"? With Love, from China....... Oh, yes, more recently: CE = Chinese Export......... AWith Love, from China........ Dave - WØLEV -- *Dave - WØLE; /archives//html/RFI/2020-08/msg00029.html (8,739 bytes)
189. Re: [RFI] Samsung Oven update #4 'final' response from Samsung Corporate (score: 1): Author: David Eckhardt <davearea51a@gmail.com>; Date: Sat, 29 Aug 2020 20:09:31 +0000; Also, if there is a group dedicated to your specific appliance, post there as well. When we had to escalate our order for our Jeep Rubicon THREE TIMES to get it built (they sat on all the parts for m; /archives//html/RFI/2020-08/msg00054.html (16,404 bytes)
190. Re: [RFI] Soliciting Help From Certified RF Engineer (score: 1): Author: David Eckhardt <davearea51a@gmail.com>; Date: Wed, 2 Sep 2020 16:12:45 +0000; I must ask a more basic question. Specifically under what part of CFR47, if any, do home solar installations fall? They're not ITE. They're not ISM. They're not home appliances (which are exempt). Sp; /archives//html/RFI/2020-09/msg00007.html (12,097 bytes)
191. Re: [RFI] RFI - A Losing Battle (score: 1): Author: David Eckhardt <davearea51a@gmail.com>; Date: Thu, 3 Sep 2020 03:15:34 +0000; Jim W6YA, you are so correct. Us EMC/RFI engineers are only small voices in a huge forest of lawyers. And China has taught industry that cheating is OK and you're likely not going to be caught. The F; /archives//html/RFI/2020-09/msg00011.html (10,605 bytes)
192. Re: [RFI] 433.92 remote control, legal? (score: 1): Author: David Eckhardt <davearea51a@gmail.com>; Date: Thu, 3 Sep 2020 18:32:08 +0000; And now I have multiple 'research' high-powered wind profiler radar emissions out of Longmont, Colorado to deal with. Dave - WØLEV -- *Dave - WØLEV* *Just Let Darwin Work* ___________________________; /archives//html/RFI/2020-09/msg00017.html (8,618 bytes)
193. Re: [RFI] Radar 433 MHz. (score: 1): Author: David Eckhardt <davearea51a@gmail.com>; Date: Thu, 3 Sep 2020 18:51:14 +0000; I can give you a screen capture using the AirSpy SDR. We need to run errands, so a bit later I'll get to that. At present, my 430 interferometer is offline for the HI telescope (1420 MHz) - not enoug; /archives//html/RFI/2020-09/msg00019.html (8,432 bytes)
194. Re: [RFI] Rheem AC RFI (score: 1): Author: David Eckhardt <davearea51a@gmail.com>; Date: Sat, 5 Sep 2020 17:50:49 +0000; Does your spectrum analyzer show tynes at 6.5 kHz, the spec switching frequency of the inverter board? If so, you've nailed the source. If not, keep looking and probing with the spectrum analyzer and; /archives//html/RFI/2020-09/msg00022.html (11,689 bytes)
195. Re: [RFI] Rheem AC RFI (score: 1): Author: David Eckhardt <davearea51a@gmail.com>; Date: Sat, 5 Sep 2020 19:56:49 +0000; You don't look at the 6.5 kHz, specifically! Look for the noise on 40-meters or wherever the problem is occurring. Once you find that noise, look for tyne spacing of 6.5 kHz which should be character; /archives//html/RFI/2020-09/msg00024.html (12,365 bytes)
196. Re: [RFI] Rheem HVAC RFI Link to document (score: 1): Author: David Eckhardt <davearea51a@gmail.com>; Date: Tue, 8 Sep 2020 23:25:13 +0000; Excellent documentation! I have found that 'fuzzy' traces don't always communicate what you are attempting. I use the max hold function to better display the magnitude of the interference between pow; /archives//html/RFI/2020-09/msg00032.html (9,098 bytes)
197. Re: [RFI] Rheem HVAC RFI Link to document (score: 1): Author: David Eckhardt <davearea51a@gmail.com>; Date: Wed, 9 Sep 2020 00:43:18 +0000; You could build yourself a 1/2-wavelength dipole decoupled with clamp-on ferrite to form a standard antenna. The antenna factor of a dipole is well known. You could make real measurements, especially; /archives//html/RFI/2020-09/msg00034.html (13,282 bytes)
198. Re: [RFI] Sound Card (score: 1): Author: David Eckhardt <davearea51a@gmail.com>; Date: Wed, 16 Sep 2020 00:22:13 +0000; Lots of clamp-on ferrites with multiple turns through each at both ends of the cable. Dave - W ØLEV -- *Dave - WØLEV* *Just Let Darwin Work* _______________________________________________ RFI mailin; /archives//html/RFI/2020-09/msg00037.html (7,405 bytes)
199. Re: [RFI] Noisy PC Speakers (score: 1): Author: David Eckhardt <davearea51a@gmail.com>; Date: Sat, 19 Sep 2020 23:04:58 +0000; Don't buy any speakers with active circuitry, especially digital. Active noise cancellation is a license for RFI. If it needs power other than the audio, beware! Dave - WØLEV -- *Dave - WØLEV* *Just; /archives//html/RFI/2020-09/msg00057.html (10,414 bytes)
200. Re: [RFI] RFI - A Losing Battle (score: 1): Author: David Eckhardt <davearea51a@gmail.com>; Date: Tue, 22 Sep 2020 22:50:57 +0000; If I read between the lines and, in summary, the first contact should be with the ARRL. They (still) have the capability of working on a technical basis with the amateurs and, most importantly, still; /archives//html/RFI/2020-09/msg00106.html (17,462 bytes)

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