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21. [RFI] AFCI (score: 1): Author: ka5s@earthlink.net (Cortland Richmond); Date: Mon, 1 Apr 2002 11:30:3 -0800; Check out http://www.cpsc.gov/CPSCPUB/PUBS/afcifac8.pdf http://www.lv-dcsi.com/AFCI.htm http://www.usfa.fema.gov/research/arc-tech.htm http://www.efunda.com/storefront/product_detail.cfm?prod=178 I h; /archives//html/RFI/2002-04/msg00006.html (7,380 bytes)
22. [RFI] 433.92 device tolerance (score: 1): Author: ka5s@earthlink.net (Cortland Richmond); Date: Tue, 2 Apr 2002 9:48:49 -0800; At http://www.rfm.com/products/freq.htm, the 433.92 MHz resonators have 75 KHz tolerance. This is not just a spot frequency concern. Cortland -- Cortland Richmond -- ka5s@earthlink.net -- EarthLink:; /archives//html/RFI/2002-04/msg00008.html (6,552 bytes)
23. [RFI] computer RFI (score: 1): Author: ka5s@earthlink.net (Cortland Richmond); Date: Fri, 1 Mar 2002 10:47:31 -0800; This is interesting. Here's why: I used to do EMI work at a (now defunct) computer company in southern California. Its founder (the one left) was said to occasionally chastise directors for spending; /archives//html/RFI/2002-03/msg00005.html (9,021 bytes)
24. [RFI] nissan spark gap (score: 1): Author: ka5s@earthlink.net (Cortland Richmond); Date: Fri, 8 Mar 2002 17:28:38 -0800; <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=iso-8859-1"> <META content="MSHTML 6.00.2713.1100" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT fac; /archives//html/RFI/2002-03/msg00015.html (11,346 bytes)
25. [RFI] receiver spurious response (score: 1): Author: ka5s@earthlink.net (Cortland Richmond); Date: Wed, 13 Mar 2002 10:56:20 -0800; By all means do check for a spur. Is your TX synthesized? How clean is the PLL? For that matter, how clean is HIS handheld's synthesizer? But it could be an IM problem. Has a new user moved in on you; /archives//html/RFI/2002-03/msg00029.html (7,687 bytes)
26. [RFI] receiver spurious response (score: 1): Author: ka5s@earthlink.net (Cortland Richmond); Date: Wed, 13 Mar 2002 10:59:2 -0800; By all means do check for a spur. Is your TX synthesized? How clean is the PLL? For that matter, how clean is HIS handheld's synthesizer? But it could be an IM problem. Has a new user moved in on you; /archives//html/RFI/2002-03/msg00030.html (9,705 bytes)
27. [RFI] Power line RFI situation (score: 1): Author: ka5s@earthlink.net (Cortland Richmond); Date: Mon, 18 Mar 2002 15:58:33 -0800; I've had some luck using higher frequency bands as I got closer to the source. A 1.2 GHz beam will narrow it down practically to the arcing part - but you have to be close. Modern portable receivers; /archives//html/RFI/2002-03/msg00038.html (7,865 bytes)
28. [RFI] Power line RFI tracking (score: 1): Author: ka5s@earthlink.net (Cortland Richmond); Date: Mon, 25 Mar 2002 7:33:51 -0800; I picked up an 18 element 1.47 GHz yagi at Livermore (ten bucks!) and strapped an Alinco DJ-X10 wide band receiver to it. While I doubt it is useful for general powerline noise hunting, it may be of; /archives//html/RFI/2002-03/msg00058.html (6,388 bytes)
29. [RFI] 300-470: ISM? (score: 1): Author: ka5s@earthlink.net (Cortland Richmond); Date: Wed, 27 Mar 2002 17:54:14 -0800; Snipped from a sponsors blurb on a technology bulletin: == Micrel's MICRF102 Single-Chip RF Transmitter for the 300MHz to 470MHz ISM band simplifies design and manufacture, and requires only 5 extern; /archives//html/RFI/2002-03/msg00067.html (6,752 bytes)
30. [RFI] Re: QST Article Ignores RFI (score: 1): Author: ka5s@earthlink.net (Cortland Richmond); Date: Sun, 03 Feb 2002 23:17:46 -0800; Not to mention reliability. I used to work at AST Research. The Chief was said to ocassionally buy PS and chassis' at Fry's: "Why can't we buy this stuff as cheap as Fry's sells it?" Then he had to b; /archives//html/RFI/2002-02/msg00005.html (6,789 bytes)
31. [RFI] AST Research (score: 1): Author: ka5s@earthlink.net (Cortland Richmond); Date: Thu, 07 Feb 2002 07:26:09 -0800; I did some fairly basic, not to say fundamental, work on monitor EMI, years ago at Tandy. By way of demo, I set up something a computer for conducted emissions, and then showed the boss. Turning a ne; /archives//html/RFI/2002-02/msg00008.html (6,942 bytes)
32. [RFI] Cable TV Interference (score: 1): Author: ka5s@earthlink.net (Cortland Richmond); Date: Fri, 07 Dec 2001 07:29:44 +0800; The FCC limit is not a requirement; it is a maximum. In the event of harmful interference, the cable company is _supposed_ to work to reduce it. You can build, buy or borrow a tuned dipole. Use about; /archives//html/RFI/2001-12/msg00013.html (9,164 bytes)
33. [RFI] DC to DC adapter noise (score: 1): Author: ka5s@earthlink.net (Cortland Richmond); Date: Thu, 27 Dec 2001 21:14:58 -0800; Make it DO-160 compliant ,too, Earl! I'm also in that line of work. Might make it to Minneapolis. See ya there, perhaps. Cortland; /archives//html/RFI/2001-12/msg00063.html (6,215 bytes)
34. [RFI] Cable Modem Interference (score: 1): Author: ka5s@earthlink.net (Cortland Richmond); Date: Thu, 29 Nov 2001 11:33:03 +0800; Yup! And a LOT of things do not meet the standard they are marked as meeting. If they're marked at all. Check out http://www.apogeeddx.com/EMI_considerations_using_DDX.PDF Cortland --; /archives//html/RFI/2001-11/msg00033.html (7,164 bytes)
35. [RFI] Cable Modem Interference (score: 1): Author: ka5s@earthlink.net (Cortland Richmond); Date: Thu, 29 Nov 2001 11:33:26 +0800; Yup! And a LOT of things do not meet the standard they are marked as meeting. If they're marked at all. Check out http://www.apogeeddx.com/EMI_considerations_using_DDX.PDF Cortland --; /archives//html/RFI/2001-11/msg00034.html (7,179 bytes)
36. [RFI] Filtered connectors for video noise (score: 1): Author: ka5s@earthlink.net (Cortland Richmond); Date: Fri, 26 Oct 2001 08:40:35 -0700; Video card, or monitor? Does tuning off just the monitor change things? Cortland; /archives//html/RFI/2001-10/msg00021.html (7,808 bytes)
37. [RFI] Question (score: 1): Author: ka5s@earthlink.net (Cortland Richmond); Date: Fri, 26 Oct 2001 08:43:18 -0700; SOUNDS like a low-res monitor display. Is there a public access video sign nearby? Cortland; /archives//html/RFI/2001-10/msg00022.html (6,270 bytes)
38. [RFI] Filtered connectors for video noise (score: 1): Author: ka5s@earthlink.net (Cortland Richmond); Date: Sat, 27 Oct 2001 02:33:16 +0800; Here is another suggestion. If changing the monitor's contrast control while it's running affects the interference, then it is coming from the monitor. If not, then it is coming from the card, OR the; /archives//html/RFI/2001-10/msg00024.html (8,628 bytes)
39. [RFI] Filtered connectors for video noise (score: 1): Author: ka5s@earthlink.net (Cortland Richmond); Date: Sat, 27 Oct 2001 02:35:33 +0800; Here is another suggestion. If changing the monitor's contrast control while it's running affects the interference, then it is coming from the monitor. If not, then it is coming from the card, OR the; /archives//html/RFI/2001-10/msg00025.html (8,549 bytes)
40. [RFI] Filtered connectors for video noise (score: 1): Author: ka5s@earthlink.net (Cortland Richmond); Date: Sat, 27 Oct 2001 02:35:49 +0800; Here is another suggestion. If changing the monitor's contrast control while it's running affects the interference, then it is coming from the monitor. If not, then it is coming from the card, OR the; /archives//html/RFI/2001-10/msg00026.html (8,552 bytes)

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