- 1. [RFI] RE:[TowerTalk] electric fence qrn (score: 1)
- Author: "Morse, Earl (E.A.)" <emorse@ford.com>
- Date: Wed, 10 Dec 2003 12:25:14 -0500
- Yes it should do some good. Select a ferrite that would be effective at the desired frequency such as a 73 material for below 30 MHz. The windings should be of insulated wire since this ferrite mater
- /archives//html/RFI/2003-12/msg00029.html (6,916 bytes)
- 2. [RFI] BCI filters, WAS: Help with broadcast interference (score: 1)
- Author: "Morse, Earl (E.A.)" <emorse@ford.com>
- Date: Mon, 16 Feb 2004 10:03:29 -0500
- I sent the first response from an unsubscribed email account. Here it is again. Here are some available filters that may help with the BCI/160 issue. 40 dB bandpass filter for 160 <http://www.dunesta
- /archives//html/RFI/2004-02/msg00102.html (7,718 bytes)
- 3. RE: [RFI] Diesel "ignition" noise (actually injector solenoids?) (score: 1)
- Author: "Morse, Earl (E.A.)" <emorse@ford.com>
- Date: Mon, 21 Jun 2004 12:38:04 -0400
- Rick, It is a common problem on late model diesels. With the use of high pressure injectors it takes a 100V pulse to actually fire the injector. There is also some back EMF from the solenoids as the
- /archives//html/RFI/2004-06/msg00071.html (8,398 bytes)
- 4. RE: [RFI] New chipset vs. EMI in notebook computers. (score: 1)
- Author: "Morse, Earl (E.A.)" <emorse@ford.com>
- Date: Wed, 21 Jul 2004 16:29:39 -0400
- This technology is old hat. Almost every personal computer used a clock generator with the Spread Spectrum or "dithering" enabled when I was working on them 18 months ago. CISPR uses receivers with 1
- /archives//html/RFI/2004-07/msg00161.html (9,424 bytes)
- 5. Re: [RFI] source for RFI filter cordset? (score: 1)
- Author: "Morse, Earl (E.A.)" <emorse@ford.com>
- Date: Tue, 2 Aug 2005 13:49:43 -0400
- The most cost effective is the Corcom filters integrated with the IEC connectors. That configuration will also work the best for noise suppression especially compared to a cable with the filter in th
- /archives//html/RFI/2005-08/msg00001.html (10,001 bytes)
- 6. Re: [RFI] RFI all over the band (score: 1)
- Author: "Morse, Earl (E.A.)" <emorse@ford.com>
- Date: Mon, 2 Oct 2006 09:55:36 -0400
- Most definitely a power line noise and one that is exposed to rain too. One technique that you can use to home in on the source is to use your AM radio and start with a clear frequency as high up in
- /archives//html/RFI/2006-10/msg00003.html (9,975 bytes)
- 7. Re: [RFI] Behringer RFI (score: 1)
- Author: "Morse, Earl (E.A.)" <emorse@ford.com>
- Date: Mon, 23 Oct 2006 09:27:26 -0400
- Dave has a point that the $1M was probably a calculated cost of doing business. Risking a million to make $500M in sales is a sound risk for low end electronics companies. If the FCC is sucessful in
- /archives//html/RFI/2006-10/msg00039.html (9,407 bytes)
- 8. Re: [RFI] intermod/rectification (score: 1)
- Author: "Morse, Earl (E.A.)" <emorse@ford.com>
- Date: Tue, 24 Oct 2006 17:24:54 -0400
- Mike, The PN junction where the mixing is occuring may not be in your antennas but rather close to you. A metal fence or other object near you could have a poor connection and be mixing signals stron
- /archives//html/RFI/2006-10/msg00043.html (9,402 bytes)
- 9. Re: [RFI] FW: Interference on TV using 2 meters (score: 1)
- Author: "Morse, Earl (E.A.)" <emorse@ford.com>
- Date: Mon, 30 Oct 2006 08:47:50 -0500
- It's amazing that the city was still making any money on the service. If the general public knew you could get it for free why would you bother to pay for it? At $35 a month that would be over $400 a
- /archives//html/RFI/2006-10/msg00061.html (7,820 bytes)
- 10. Re: [RFI] Choosing Snap-On Toroid for 6M? (score: 1)
- Author: "Morse, Earl (E.A.)" <emorse@ford.com>
- Date: Mon, 19 Feb 2007 15:08:33 -0500
- As folks have already noted, the material type is not mentioned in the data on that site. In most cases these snap on beads are in a #43 material which is used almost exclusively by the computer indu
- /archives//html/RFI/2007-02/msg00054.html (8,589 bytes)
- 11. Re: [RFI] Mystery 70 cm Repeater Input RFI/EMI? (score: 1)
- Author: "Morse, Earl (E.A.)" <emorse@ford.com>
- Date: Fri, 12 Oct 2007 14:31:35 -0400
- If it is bothering two other 440 machines in the immediate area I would suspect that it is local to the site and that it is broadband. It sounds like something that has gone intermittent and is putti
- /archives//html/RFI/2007-10/msg00035.html (10,462 bytes)
- 12. Re: [RFI] FCC Class A& B Regs/ was: Low Voltage Patio Lights (score: 1)
- Author: "Morse, Earl (E.A.)" <emorse@ford.com>
- Date: Wed, 10 Sep 2008 14:08:06 -0400
- Its my guess only as I never did any Part 18 work. I don't believe that any device intended for residential use would be covered by Part 18. I would still guess that Part 15 Class B would be applicab
- /archives//html/RFI/2008-09/msg00017.html (7,579 bytes)
- 13. [RFI] RFI in truck meters and lights? (score: 1)
- Author: "Morse, Earl (E.A.)" <emorse@ford.com>
- Date: Mon, 15 Sep 2008 13:12:56 -0400
- What was the truck year, make, and model? Where is the antenna mounted? Where are the cables routed? What power level? Impossible to begin to determine the problem without all the specifics. Earl N8S
- /archives//html/RFI/2008-09/msg00029.html (7,381 bytes)
- 14. Re: [RFI] Line Noise Spectragraph (score: 1)
- Author: "Morse, Earl (E.A.)" <emorse@ford.com>
- Date: Thu, 20 Nov 2008 17:15:40 -0500
- It looks like harmonics from a Switch Mode Power Supply (SMPS)and since almost all electronics use SMPS technology it could be anything from a TV to a computer to a battery charger. Good job on elimi
- /archives//html/RFI/2008-11/msg00040.html (9,584 bytes)
- 15. [RFI] Electric fencer RFI (score: 1)
- Author: "Morse, Earl (E.A.)" <emorse@ford.com>
- Date: Tue, 6 Jan 2009 12:49:43 -0500
- I have used the Fido Shock fence for keeping dogs in. They used to be available at Home Depot but not sure if they still are. It was a continuous and not pulsed fencer so there was never any noise fr
- /archives//html/RFI/2009-01/msg00038.html (9,982 bytes)
- 16. Re: [RFI] RFI Digest, Vol 76, Issue 17 (score: 1)
- Author: "Morse, Earl (E.A.)" <emorse@ford.com>
- Date: Thu, 23 Apr 2009 15:32:40 -0400
- That statement goes both ways. I have watched audio guys create a design that was the equivalent of putting a gun to their head when it started to get out of the kHz ranges. Frequency is the great eq
- /archives//html/RFI/2009-04/msg00066.html (7,837 bytes)
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