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21. [RFI] DSL Modems and RFI (score: 1): Author: Jon Ogden <jono@enteract.com> (Jon Ogden); Date: Tue, 21 Nov 2000 22:43:42 -0600; Hi all, I know that the subject of DSL modems and RFI comes up every so often. Well, I have a DSL line and a SpeedStream 5260 ADSL modem. My typical sync speeds are around 1 Mb/sec. I haven't done a; /archives//html/RFI/2000-11/msg00027.html (7,680 bytes)
22. [RFI] Report on RFI Problem (score: 1): Author: Jon Ogden <jono@enteract.com> (Jon Ogden); Date: Thu, 27 Apr 2000 23:04:12 -0500; Hi all, A couple months ago, I wrote about an RFI problem I was having. I was receiving wideband noise on frequencies up to 220 MHz. It was nearly S9 and was constant. It totally made packet unusable; /archives//html/RFI/2000-04/msg00006.html (8,149 bytes)
23. [RFI] BIG, HUGE RFI Problem (score: 1): Author: Jon Ogden <jono@enteract.com> (Jon Ogden); Date: Wed, 09 Feb 2000 21:52:58 -0600; OK guys, I need some help on a really big RFI problem. This time though, I am the victim! A couple of weeks ago, I began noticing a rise in electrical noise for short periods of time. I noticed it fi; /archives//html/RFI/2000-02/msg00012.html (8,961 bytes)
24. [RFI] Monitor RFI questions (score: 1): Author: Jon Ogden <jono@enteract.com> (Jon Ogden); Date: Mon, 31 Jan 2000 19:19:04 -0600; I don't know about them all that much, but in my shack, I have a laptop with an LCD display in addition to a regular machine with a regular display. I NEVER have RFI from the LCD nor does RF bother t; /archives//html/RFI/2000-01/msg00000.html (7,088 bytes)
25. [RFI] Snap on split beads; coax high-pass filter recommendations (score: 1): Author: Jon Ogden <jono@enteract.com> (Jon Ogden); Date: Wed, 01 Dec 1999 16:50:42 -0600; The stuff Radio Shack sells is Type 43. That's not what you want to use for HF attenuation. I think this sort of thing is what give ferrites a bad name. Type 43 is better for probably 20 MHz up to a; /archives//html/RFI/1999-12/msg00003.html (10,805 bytes)
26. [RFI] Snap on split beads; coax high-pass filter recommendations (score: 1): Author: Jon Ogden <jono@enteract.com> (Jon Ogden); Date: Thu, 02 Dec 1999 19:17:38 -0600; The material though in the split ferrites and so forth that you can buy from Radio Shack are not type 43. They are designed more for attenuating VHF energy which would probably make them type 61 or 6; /archives//html/RFI/1999-12/msg00015.html (10,555 bytes)
27. [RFI] Snap on split beads; coax high-pass filterrecommendations (score: 1): Author: Jon Ogden <jono@enteract.com> (Jon Ogden); Date: Fri, 03 Dec 1999 09:04:42 -0600; I am almost certain the material in the Radio Shack ferrites is not type 43. It probably works well for you because 15 and 17 meters are high enough in frequency for material 61 or 68. I also had a l; /archives//html/RFI/1999-12/msg00018.html (10,994 bytes)
28. [RFI] Snap on split beads; coax high-pass filter recommendations (score: 1): Author: Jon Ogden <jono@enteract.com> (Jon Ogden); Date: Fri, 03 Dec 1999 18:57:47 -0600; Well, I just found some of the paperwork from my order from Amidon on ferrite material. Type 77 is indeed what I bought and what Earl at Amidon recommended for frequencies up to 30 MHz. I have the la; /archives//html/RFI/1999-12/msg00026.html (10,846 bytes)
29. [RFI] Ferrite Material (score: 1): Author: Jon Ogden <jono@enteract.com> (Jon Ogden); Date: Sun, 05 Dec 1999 23:24:47 -0600; Hi all, Don't have time to write a fully message since I have a business trip in the AM and I have to get to bed. But I found my Amidon literature, and they specifically state that type 77 material i; /archives//html/RFI/1999-12/msg00028.html (6,933 bytes)
30. [RFI] Ferrite Materials (score: 1): Author: Jon Ogden <jono@enteract.com> (Jon Ogden); Date: Mon, 06 Dec 1999 21:28:36 -0600; Howdy all, OK, now I have some time to write my ferrite material comparison on type 43 and type 77 material. This is taken from Amidon's literature. Material 43 77 == Initial Permeability 850 2000 Ma; /archives//html/RFI/1999-12/msg00029.html (9,326 bytes)
31. [RFI] Ferrite Materials (score: 1): Author: Jon Ogden <jono@enteract.com> (Jon Ogden); Date: Tue, 07 Dec 1999 19:03:14 -0600; It's a good point. However, in my case, I don't think out of band harmonics output of the amplifier and generally use an antenna tuner as well. The original question was what material is best for the; /archives//html/RFI/1999-12/msg00032.html (7,821 bytes)
32. [RFI] Phone RFI fixes - no ring, lower cost solutions? (score: 1): Author: Jon Ogden <jono@enteract.com> (Jon Ogden); Date: Tue, 21 Dec 1999 20:06:43 -0600; Rich Measures, AG6K, has plans for homebrew phone filters on his website. They are basically the same as what you would pay big bucks for. The URL is: http://www.vcnet.com/~measures/T.RFI.html and ht; /archives//html/RFI/1999-12/msg00037.html (9,325 bytes)
33. [RFI] RF Interference To My Computer Sound System (score: 1): Author: Jon Ogden <jono@enteract.com> (Jon Ogden); Date: Sun, 26 Dec 1999 23:44:44 -0600; For 80 meters a type 77 material torroid would be the best. Get a medium sized one and put as many turns of your speaker wires around it as you can. The best place to put it is likely near the speake; /archives//html/RFI/1999-12/msg00049.html (7,929 bytes)
34. [RFI] Computer monitor RFI (score: 1): Author: Jon Ogden <jono@enteract.com> (Jon Ogden); Date: Sun, 26 Dec 1999 23:47:10 -0600; One thing I did on my monitor that seemed to help was to actually ground the frame of the monitor to my RF ground. Helped out with noise to the radio and with RF getting into the monitor quite a bit.; /archives//html/RFI/1999-12/msg00050.html (8,374 bytes)
35. [RFI] Need Help With RFI Problem with Neighbor (score: 1): Author: Jon Ogden <jono@enteract.com> (Jon Ogden); Date: Mon, 22 Nov 1999 11:03:26 -0600; Hi all, Well, yesterday I was having a blast during my first phone SS and making a nice run at accomplishing my goal of 1000 Qs. I was at about 765 around 5:15 pm local time when I heard (and felt) a; /archives//html/RFI/1999-11/msg00020.html (11,962 bytes)
36. [RFI] DSL Modem / Line and RFI? (score: 1): Author: Jon Ogden <jono@enteract.com> (Jon Ogden); Date: Mon, 29 Nov 1999 09:04:59 -0600; Corect, Ray. I was thinking about the original poster's problem as well and what might be happening is that RF may be getting into the modem itself. I would recommend putting Type-77 ferrites around; /archives//html/RFI/1999-11/msg00030.html (9,003 bytes)

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