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1. [RFI] Signals on 160 (score: 1): Author: "Gary Smith" <Gary@ka1j.com>; Date: Sun, 28 Oct 2018 13:31:51 -0400; I've been encountering some strong signals on 160 recently. I made some approximate guesses at the frequency using the P3 markers to measure them. Here's the signals at 1:20PM local time with a cente; /archives//html/RFI/2018-10/msg00032.html (6,908 bytes)
2. Re: [RFI] Signals on 160 (score: 1): Author: donovanf@starpower.net; Date: Sun, 28 Oct 2018 15:04:18 -0400 (EDT); Hi Gary, Of course, the first thing you should do is turn off all of the AC power -- including UPSs -- in your own home to determine if any of the RFI disappears. I don't think anyone will be doing y; /archives//html/RFI/2018-10/msg00033.html (8,371 bytes)
3. Re: [RFI] Signals on 160 (score: 1): Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>; Date: Sun, 28 Oct 2018 19:54:17 +0000; "What is it?" is the wrong question. If someone said that it is a model Z-123 Netstuff modem, that really wouldn't help much. The real question is: "Where is it?" Finding the house or location where; /archives//html/RFI/2018-10/msg00034.html (9,049 bytes)
4. Re: [RFI] Signals on 160 (score: 1): Author: "David Robbins" <k1ttt@verizon.net>; Date: Sun, 28 Oct 2018 16:19:50 -0500; The only thing you can really tell from that type of display is that it is very narrow and repeating up the band... the very narrow part tells you it is probably not a cheap power supply, grow light,; /archives//html/RFI/2018-10/msg00035.html (9,071 bytes)
5. Re: [RFI] Signals on 160 (score: 1): Author: JW via RFI <rfi@contesting.com>; Date: Sun, 28 Oct 2018 20:25:54 +0000 (UTC); What antenna type? Any balun at the feedpoint etc? Some antenna designs and methods for matching, feeding are_less_ prone to common mode currents developed inside the house than others on receive. I; /archives//html/RFI/2018-10/msg00036.html (9,021 bytes)
6. Re: [RFI] Signals on 160 (score: 1): Author: Cortland Richmond <ka5s@earthlink.net>; Date: Sun, 28 Oct 2018 16:34:21 -0400; Ed will remember the AT&T modems on 80 meters. I had good luck tracking them down in Petaluma and locating each one to specific rooms in a development of single-story duplexes. It was Super Bowl Sun; /archives//html/RFI/2018-10/msg00037.html (10,902 bytes)
7. Re: [RFI] Signals on 160 (score: 1): Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>; Date: Sun, 28 Oct 2018 21:47:44 +0000; I remember the wireless modem jacks on 3.53 MHz very well. What I learned in those days what that, for the most part, emissions from devices plugged in to house wiring exhibits two phenomena: 1. They; /archives//html/RFI/2018-10/msg00038.html (14,744 bytes)
8. Re: [RFI] Signals on 160 (score: 1): Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>; Date: Sun, 28 Oct 2018 21:53:10 +0000; Most of the time, noise sources spaced 10 to 100 kHz apart are switching power supplies or similar devices. They exhibit the following characteristics: 1. The noise appears at intervals across a ban; /archives//html/RFI/2018-10/msg00039.html (13,439 bytes)
9. Re: [RFI] Signals on 160 (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Sun, 28 Oct 2018 15:42:45 -0700; Yes and no. K1TTT's observation that it's narrow, stable, and unmodulated is quite useful -- it suggests that the emitter is likely running on a stable clock and associated with some sort of micropro; /archives//html/RFI/2018-10/msg00041.html (8,941 bytes)
10. Re: [RFI] Signals on 160 (score: 1): Author: "Dave Cole (NK7Z)" <dave@nk7z.net>; Date: Sun, 28 Oct 2018 16:25:51 -0700; After killing the power in your home, and if you find you are not the cause of your RFI, the best advice here is to build a loop... They are mindlessly simple to build, and if you keep things neat, a; /archives//html/RFI/2018-10/msg00042.html (14,925 bytes)
11. Re: [RFI] Signals on 160 (score: 1): Author: "Gary Smith" <Gary@ka1j.com>; Date: Fri, 02 Nov 2018 11:38:24 -0400; Folks, Apologies for not replying earlier to the helpful suggestions. I meant to reply and got sidetracked. I found my portable SW radio wasn't able to pick up signals in the 160M band, it leaves a b; /archives//html/RFI/2018-11/msg00006.html (14,631 bytes)
12. Re: [RFI] Signals on 160 (score: 1): Author: "Gary Smith" <Gary@ka1j.com>; Date: Wed, 07 Nov 2018 17:28:56 -0500; I might... have found the cause of the signals I've been seeing that were so symmetrical as originally described and seen in the photos of the P3 SVGA monitor. To cut to the chase, a problem I've had; /archives//html/RFI/2018-11/msg00024.html (17,096 bytes)

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