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Total 4 documents matching your query.

1. Re: [TenTec] RF gets into computer (ADT Alarm System) (score: 1): Author: W4ABW@aol.com; Date: Sun, 22 Apr 2007 13:00:45 EDT; I use the FT-1000MP and I get RF (I think) into the ADT Security alarm system. It sets off the alarm when its not armed. Any thought on this? Its only troublesome on 40m where I use a dipole that's c; /archives//html/TenTec/2007-04/msg00391.html (7,712 bytes)
2. Re: [TenTec] RF gets into computer (ADT Alarm System) (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>; Date: Sun, 22 Apr 2007 11:34:07 -0600; Moving the 40 meter antenna may help, but it sounds as if the alarm wiring needs some RF filtering with bypass capacitors and toroids or RF chokes. Its probably some wire in the alarm system is nearl; /archives//html/TenTec/2007-04/msg00393.html (8,414 bytes)
3. Re: [TenTec] RF gets into computer (ADT Alarm System) (score: 1): Author: "Ron Castro" <ronc@sonic.net>; Date: Sun, 22 Apr 2007 10:56:56 -0700; Common mode rejection filtering is generally what fixes these types of problems. The RF is induced to all of the wiring connected to the device, then tries to find its way to ground through the power; /archives//html/TenTec/2007-04/msg00400.html (9,758 bytes)
4. Re: [TenTec] RF gets into computer (ADT Alarm System) (score: 1): Author: "Jim" <jdunbar28@mchsi.com>; Date: Sun, 22 Apr 2007 13:03:57 -0500; Al, You need to get serious about ferrite chokes being installed everywhere, and not just one choke, multiple. It is imperative to suppress all of the common mode currents brought about by various im; /archives//html/TenTec/2007-04/msg00401.html (10,828 bytes)

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