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References: [ +from:Jon.Ogden@cain-forlaw.com: 14 ]

Total 14 documents matching your query.

1. [RFI] FT-847 is a Part 15 Device? (score: 1): Author: Jon.Ogden@cain-forlaw.com (Jon Ogden); Date: Tue, 23 Jul 2002 15:26:09 -0500; I think that every radio I own has a part 15 disclaimer in it including my HF radios. I think anything with a microprocessor is considered a part 15 device. After all, to have a micro-p, you have to; /archives//html/RFI/2002-07/msg00011.html (10,452 bytes)
2. [RFI] FT-847 is a Part 15 Device? (score: 1): Author: Jon.Ogden@cain-forlaw.com (Jon Ogden); Date: Tue, 23 Jul 2002 16:42:49 -0500; Again, folks, you have to look at the device under the guidelines of part 15. Part 15 devices are related to unintentional emmiters, etc. Your FT-847 or any other radio should NOT cause harmful inter; /archives//html/RFI/2002-07/msg00013.html (11,783 bytes)
3. [RFI] rfi to computer via sound card (score: 1): Author: Jon.Ogden@cain-forlaw.com (Jon Ogden); Date: Thu, 30 May 2002 15:59:41 -0500; Pete, There may be other unknown factors in this. I discovered with my PC and sound card a problem. I had a cable running from my modem to my sound card internally in the PC. I disconnected it and th; /archives//html/RFI/2002-05/msg00013.html (8,950 bytes)
4. [RFI] Touch light RFI Update - Final (score: 1): Author: jon.ogden@cain-forlaw.com (Jon Ogden); Date: Mon, 19 Nov 2001 10:12:20 -0600; Hi all, Well, it's been several months since I've brought up the subject of the RFI situation with my touch lighting system that is part of my new kitchen cabinets. I learned a bit in this about how; /archives//html/RFI/2001-11/msg00008.html (12,171 bytes)
5. [RFI] Audio Interfacing to Sound Card and RFI (score: 1): Author: jon.ogden@cain-forlaw.com (Jon Ogden); Date: Mon, 19 Nov 2001 10:21:28 -0600; Hi folks, OK another RFI problem here. This weekend, I operated in the ARRL SSB sweepstakes. I just recently purchased Writelog as my logging program and wanted to interface the radio and sound card; /archives//html/RFI/2001-11/msg00009.html (8,765 bytes)
6. [RFI] Interfacing to sound card RFI (score: 1): Author: jon.ogden@cain-forlaw.com (Jon Ogden); Date: Mon, 26 Nov 2001 09:29:05 -0600; WOW! That's a new one. I never thought you could have too many turns on the torroid. I guess it makes sense, but I've always been told that the more turns you can get around one of those, the better; /archives//html/RFI/2001-11/msg00020.html (8,085 bytes)
7. [RFI] Filtered connectors for video cable (score: 1): Author: jon.ogden@cain-forlaw.com (Jon Ogden); Date: Thu, 25 Oct 2001 09:07:41 -0500; Pete, I didn't read you original message, but after reading it, my guess is that regardless of what is producing the noise (the video card or the monitor itself), the video cable is acting as the rad; /archives//html/RFI/2001-10/msg00013.html (10,090 bytes)
8. [RFI] Touch Light Update #3 (score: 1): Author: Jon Ogden <jon.ogden@cain-forlaw.com> (Jon Ogden); Date: Tue, 26 Jun 2001 07:31:18 -0500; Hi all, Yet again another update to my under cabinet touch lighting situation. To refresh your memory, on 20m I am having problems with my RF turning the lights on and stepping them through their var; /archives//html/RFI/2001-06/msg00027.html (9,637 bytes)
9. [RFI] Touch Light Update #3 (score: 1): Author: Jon Ogden <jon.ogden@cain-forlaw.com> (Jon Ogden); Date: Tue, 26 Jun 2001 10:23:11 -0500; No I have not. I had assumed that the sense line wrapped around the torroid would end up looking similar to using a choke in series in the line. Perhaps I am mistaken. Ten turns of the wire around a; /archives//html/RFI/2001-06/msg00029.html (9,711 bytes)
10. [RFI] Touch Light Update #3 (score: 1): Author: Jon Ogden <jon.ogden@cain-forlaw.com> (Jon Ogden); Date: Tue, 26 Jun 2001 11:35:34 -0500; According to the Amidon literature I have in front of me, the FT-50B-77 has a value of 2160 mH per 1000 turns. So that would mean that 10 turns is 21.60 mH. So that's way to big. However, it still di; /archives//html/RFI/2001-06/msg00031.html (9,572 bytes)
11. [RFI] Touch Light Update #3 (score: 1): Author: Jon Ogden <jon.ogden@cain-forlaw.com> (Jon Ogden); Date: Tue, 26 Jun 2001 12:06:31 -0500; I made a mistake here. The inductance is proportional to the square of the turns. Amidon uses the following formula: Turns = 1000 * Sqrt(desired L (mH)/Al) Where Al = the inductance value at 1000 tur; /archives//html/RFI/2001-06/msg00032.html (11,256 bytes)
12. [RFI] Undercounter Touch Lights #4 (score: 1): Author: Jon Ogden <jon.ogden@cain-forlaw.com> (Jon Ogden); Date: Thu, 28 Jun 2001 09:48:27 -0500; I have some more info I'd like to share that I learned after writing the note below. I have found the entire system to be very layout dependent with respect to susceptibility to my transmissions. If; /archives//html/RFI/2001-06/msg00039.html (11,478 bytes)
13. [RFI] Re: Radio Frequency Interference (RFI) Digest V4 #56 (score: 1): Author: Jon Ogden <jon.ogden@cain-forlaw.com> (Jon Ogden); Date: Thu, 28 Jun 2001 10:37:45 -0500; I will have to take a look at that. I also just got some advice from a ham friend who is also an oscillator expert. He suggested putting an LC parallel resonant circuit at 14 MHz in series with the s; /archives//html/RFI/2001-06/msg00042.html (42,677 bytes)
14. [RFI] Undercounter Touch Lights #4 (score: 1): Author: Jon Ogden <jon.ogden@cain-forlaw.com> (Jon Ogden); Date: Thu, 28 Jun 2001 13:34:11 -0500; Actually, I haven't been able to have any capacitor interfere with the sensing line function. I've tried all sizes of caps and none affect the workings of the circuit. Since both the L and C are in; /archives//html/RFI/2001-06/msg00045.html (9,119 bytes)

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