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1. [RFI] Inbound RFI - strange source affecting 160 and 80 (score: 1): Author: "Stu Phillips" <stu@ridgelift.com>; Date: Sun, 21 Feb 2010 16:07:59 -0700; I'm wondering if anyone has seen an RFI source like this before? * At isolated (and generally short) periods, the RFI is gone. * It has two modes... * Mode A - like the pattern from my first RFI Hunt; /archives//html/RFI/2010-02/msg00107.html (8,052 bytes)
2. [RFI] Inbound RFI - strange source affecting 160 and 80 (score: 1): Author: "Stu Phillips" <stu@ridgelift.com>; Date: Sun, 21 Feb 2010 16:15:08 -0700; Sorry hit the wrong button! ..... I'm wondering if anyone has seen an RFI source like this before? - At isolated (and generally short) periods, the RFI is gone. - It has two modes... - Mode A - a rep; /archives//html/RFI/2010-02/msg00108.html (8,875 bytes)
3. Re: [RFI] Inbound RFI - strange source affecting 160 and 80 (score: 1): Author: "Stu Phillips" <stu@ridgelift.com>; Date: Sun, 21 Feb 2010 18:08:15 -0700; Randy, Thanks but I don't think that's it... The signals are measured at 18 KHz apart using my Flex 5000 - the signals start somewhere around 1.7 MHz (tough to see them lower because of the AM band); /archives//html/RFI/2010-02/msg00110.html (11,152 bytes)
4. [RFI] Does a power pole generating RFI always generate ultrasonics? (score: 1): Author: "Stu Phillips" <stu@ridgelift.com>; Date: Mon, 7 Jun 2010 16:46:12 -0600; I'm tracking a power pole near my QTH that is generating RFI from 15m on up. With a combination of HF and VHF antenna, I'm pretty sure I've tracked to the correct pole. This pole is generating more o; /archives//html/RFI/2010-06/msg00009.html (7,089 bytes)
5. [RFI] Strange RFI on 20m (score: 1): Author: Stu Phillips <stu@ridgelift.com>; Date: Wed, 2 Feb 2011 18:56:24 +0000; This morning I noticed a very strange new RFI source on 20m. The signal repeats every 25 KHz across the band (above and below as well) and drift slowly lower in frequency over time. I've posted a WAV; /archives//html/RFI/2011-02/msg00020.html (6,918 bytes)
6. Re: [RFI] Signal on 14.200 (score: 1): Author: Stu Phillips <stu@ridgelift.com>; Date: Fri, 21 Oct 2011 01:05:20 +0000; Its still there from CM87... about 300 Hz lower in frequency but same pattern. Peaks bearing 100 degrees from my location. Sounds samples and panadaptor shots provided to ARRL Intruder Watch. Stu K6T; /archives//html/RFI/2011-10/msg00022.html (7,431 bytes)
7. Re: [RFI] 160m ARDF / fox hunt antenna (score: 1): Author: Stu Phillips <stu@ridgelift.com>; Date: Fri, 30 Nov 2012 14:11:01 +0000; Try using this configuration but with a capacitor to tune it into a parallel circuit and then couple it with a HiZ transformer - about 50 turns of 28 ga on a FT50-61 will get you close to a match int; /archives//html/RFI/2012-11/msg00065.html (9,661 bytes)
8. Re: [RFI] Turn off the whole house to locate noise sources? (score: 1): Author: Stuart Phillips <stu@ridgelift.com>; Date: Sun, 22 Oct 2017 19:32:09 +0000; Gary, The switchers will generate RFI regardless of whether pulling current or not however, expect the RF signature to change somewhat under load depending on the design of the unit. My experience is; /archives//html/RFI/2017-10/msg00022.html (8,652 bytes)

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