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References: [ +from:n1rj@adelphia.net: 9 ]

Total 9 documents matching your query.

1. Re: [RFI] Power Line Noise in Indonesia (score: 1)
Author: Roger D Johnson <n1rj@adelphia.net>
Date: Mon, 19 Jul 2004 10:41:39 -0400
Simon Martin wrote: I am getting rather desperate to limit some of the interference problems I am suffering, would really appreciate any useful advice: Hi Simon.... Here is something that might help.
/archives//html/RFI/2004-07/msg00080.html (8,010 bytes)

2. Re: [RFI] Power Line Noise in Indonesia (score: 1)
Author: Roger D Johnson <n1rj@adelphia.net>
Date: Tue, 20 Jul 2004 12:09:06 -0400
Simon Martin wrote: Roger, thank's for the link. It's an interesting design - I wonder if anybody you know has built it and how it worked. 73' Simon YB3ASD Unfortunately, no. It looks like it might h
/archives//html/RFI/2004-07/msg00146.html (8,865 bytes)

3. Re: [RFI] Power Line Ultrasound Detector (score: 1)
Author: Roger D Johnson <n1rj@adelphia.net>
Date: Tue, 16 Aug 2005 15:24:16 -0400
The ultrasonic detector I saw the local power company use was quite small. It seemed to be designed to be used close to the offending source so as to pinpoint the problem. It was mounted on a long in
/archives//html/RFI/2005-08/msg00037.html (8,194 bytes)

4. Re: [RFI] Power Line Ultrasound Detector (score: 1)
Author: Roger D Johnson <n1rj@adelphia.net>
Date: Tue, 16 Aug 2005 15:42:31 -0400
The point I was trying to make is that I don't know if an ultrasound unit on the ground would be any advantage over our conventional VHF/UHF localization methods. The offending pole is relatively eas
/archives//html/RFI/2005-08/msg00038.html (8,011 bytes)

5. Re: [RFI] Tv interference (score: 1)
Author: Roger D Johnson <n1rj@adelphia.net>
Date: Thu, 19 Jan 2006 15:02:27 -0500
Is this an oil furnace? If so, I suspect that the ignition transformer is energized whenever the burner is on. The resulting spark gap transmitter can cause interference over a wide band of frequenci
/archives//html/RFI/2006-01/msg00084.html (8,252 bytes)

6. Re: [RFI] FCC Clamps Down on Power Line QRN (score: 1)
Author: Roger D Johnson <n1rj@adelphia.net>
Date: Thu, 08 Jun 2006 15:57:57 -0400
There are many areas in SW Maine where reception on the AM band on a car radio is impossible. I don't think all the noise is coming from power lines. We can thank the FCC and congress for not adoptin
/archives//html/RFI/2006-06/msg00016.html (8,222 bytes)

7. Re: [RFI] Weather Station on 433.92? (score: 1)
Author: Roger D Johnson <n1rj@adelphia.net>
Date: Sat, 03 Feb 2007 20:56:02 -0500
It's not under Part 97 which are the rules governing amateur radio. It's under the part 15 rules section 231. 73, Roger -- Remember the USS Liberty (AGTR-5) http://ussliberty.org/ ___________________
/archives//html/RFI/2007-02/msg00001.html (7,196 bytes)

8. Re: [RFI] DSL INTERFERENCE FROM 160 METERS (score: 1)
Author: Roger D Johnson <n1rj@adelphia.net>
Date: Wed, 07 Feb 2007 13:20:45 -0500
--Original Message-- The installers from the phone company wanted to run the phone line to the DSL modem and install a filter at each phone. In essence, turning all the interior phone wiring into a l
/archives//html/RFI/2007-02/msg00015.html (8,854 bytes)

9. [RFI] NOISE (score: 1)
Author: Roger D Johnson <n1rj@adelphia.net>
Date: Mon, 07 May 2007 13:10:41 -0400
Just traced a source of obnoxious noise on the 15m band to the wife's new Roomba floor cleaning robot. The Roomba was docked in it's charging station. 73, Roger -- Remember the USS Liberty (AGTR-5) h
/archives//html/RFI/2007-05/msg00004.html (7,329 bytes)

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