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41. Re: [RFI] Noise centered around 20 meters (score: 1): Author: Gary <gary_mayfield@hotmail.com>; Date: Sun, 24 May 2020 00:05:43 +0000; Thanks Ed! Even without social distancing, that can be a challenge at best. The neighbor probably bought some device or another that is making noise. Let's assume he bought a whole basement worth of; /archives//html/RFI/2020-05/msg00089.html (18,904 bytes)
42. Re: [RFI] Noise centered around 20 meters (score: 1): Author: Gary <gary_mayfield@hotmail.com>; Date: Sun, 24 May 2020 00:38:28 +0000; Jim, I have read your materials -- and have used lots of type 31 material around here choking the common mode. I hadn't really checked 20 meters, until it soaked into my thick skull I may wind up doi; /archives//html/RFI/2020-05/msg00092.html (11,007 bytes)
43. Re: [RFI] Noise centered around 20 meters (score: 1): Author: Gary <gary_mayfield@hotmail.com>; Date: Sun, 24 May 2020 00:47:13 +0000; Thanks Rolan, No solar panels around here and the noise is still there at 3:00 AM. We were able to track the noise to an area the size of a block or so with a portable shortwave receiver based on sig; /archives//html/RFI/2020-05/msg00093.html (10,672 bytes)
44. Re: [RFI] Noise centered around 20 meters (Update) (score: 1): Author: Gary <gary_mayfield@hotmail.com>; Date: Sun, 14 Jun 2020 15:11:03 +0000; I thought I would update folks on the interference case mentioned below. I got lucky! Staying on public streets and in the neighborhood park I was able to track the interference down to what I though; /archives//html/RFI/2020-06/msg00017.html (9,871 bytes)
45. [RFI] New Interference at kk0sd (score: 1): Author: Gary <gary_mayfield@hotmail.com>; Date: Sun, 21 Mar 2021 18:01:55 +0000; My last problem was tracked down to a neon sign in a neighbors garage. I had several months of blissful relatively low noise operation, but now have a new RFI issue. You can see a recording of it her; /archives//html/RFI/2021-03/msg00050.html (7,943 bytes)
46. Re: [RFI] New Interference at kk0sd (score: 1): Author: Gary <gary_mayfield@hotmail.com>; Date: Sun, 21 Mar 2021 23:10:25 +0000; The facility to my east is a firestation, and then the airport. I have not checked the firestation very closely, but will do so as several folks have suggested. I have walked most of the neighborhood; /archives//html/RFI/2021-03/msg00061.html (11,001 bytes)
47. Re: [RFI] New Interference at kk0sd (score: 1): Author: Gary <gary_mayfield@hotmail.com>; Date: Mon, 22 Mar 2021 00:01:07 +0000; Don, Thanks for the suggestion. The 847 in the video does two meters in all modes. A swing of the 2 meter beam yields no noise. I can tune down to the airport VOR signal on 118 MHz and copy it clearl; /archives//html/RFI/2021-03/msg00064.html (14,240 bytes)
48. Re: [RFI] New Interference at kk0sd (score: 1): Author: Gary <gary_mayfield@hotmail.com>; Date: Mon, 22 Mar 2021 00:14:03 +0000; Jim, Thanks for the info and links. They were very interesting. It looks like I need to invest in an SDR of some kind, as I have no way to produce a waterfall wider than a couple KHz right now. I've; /archives//html/RFI/2021-03/msg00065.html (11,228 bytes)
49. Re: [RFI] New Interference at kk0sd (score: 1): Author: Gary <gary_mayfield@hotmail.com>; Date: Mon, 22 Mar 2021 00:18:45 +0000; Thanks Gary, very good information. That is very similar to the loop I have been unable to hear the noise on. It worked great on my last adventire. A sanity check is always a good thing and keep the; /archives//html/RFI/2021-03/msg00066.html (9,349 bytes)
50. Re: [RFI] New Interference at kk0sd (score: 1): Author: Gary <gary_mayfield@hotmail.com>; Date: Mon, 22 Mar 2021 00:28:07 +0000; Mike, Thanks for the info. I understand locating the noise is more important than identifying the noise. I am just try to play all the angles as I was hoping to work the WPX contest nest weekend. I h; /archives//html/RFI/2021-03/msg00067.html (11,908 bytes)
51. Re: [RFI] New Interference at kk0sd (score: 1): Author: Gary <gary_mayfield@hotmail.com>; Date: Mon, 22 Mar 2021 02:36:54 +0000; Kim, No it's a good idea. I just plugged my TECSUN PL-310 portable shortwave into my HF antenna (HyGain DX-88) when I do that I hear the noise on the portable... I do not have another HF antenna, oth; /archives//html/RFI/2021-03/msg00071.html (14,759 bytes)
52. Re: [RFI] New Interference at kk0sd (score: 1): Author: Gary <gary_mayfield@hotmail.com>; Date: Mon, 22 Mar 2021 03:01:29 +0000; Yep, I understand guessing is not what I want to do. Thanks and 73, Gary "Joe" kk0sd Guessing will also ruin your relationship with the local Power Company as well, not just for you, but in a lot of; /archives//html/RFI/2021-03/msg00074.html (12,885 bytes)
53. Re: [RFI] New Interference at kk0sd (score: 1): Author: Gary <gary_mayfield@hotmail.com>; Date: Mon, 22 Mar 2021 03:04:18 +0000; Several folks have pointed me at the Flag antenna article in the March 2021 QST. It looks like a winner. I will get going on that next weekend if needed. Keep the ideas coming! 73, Gary "Joe" kk0sd T; /archives//html/RFI/2021-03/msg00075.html (17,731 bytes)
54. Re: [RFI] New Interference at kk0sd (score: 1): Author: Gary <gary_mayfield@hotmail.com>; Date: Mon, 22 Mar 2021 03:13:12 +0000; Thats a great idea. I will add it to the list, but probably not get to it until next weekend. Its getting late, and my employer likes me wide awake. Thanks Again and if you think of anything else ple; /archives//html/RFI/2021-03/msg00077.html (16,158 bytes)
55. Re: [RFI] New Interference at kk0sd (score: 1): Author: Gary <gary_mayfield@hotmail.com>; Date: Tue, 23 Mar 2021 03:18:59 +0000; Dave, The attachment was stripped off by the list, but I have pretty good faith in my loop as it has helped me track down sources before. As you said it is bi-directional, but it gives me two nice sh; /archives//html/RFI/2021-03/msg00086.html (18,505 bytes)
56. Re: [RFI] New Interference at kk0sd (score: 1): Author: Gary <gary_mayfield@hotmail.com>; Date: Tue, 23 Mar 2021 03:30:46 +0000; Don, The loop has been a winner for me in the past. Simple but effective with two nice sharp nulls. I took it straight from the Australian QRM guru: https://qrm.guru/how-to-locate-the-noise-source-bu; /archives//html/RFI/2021-03/msg00087.html (21,004 bytes)
57. Re: [RFI] New Interference at kk0sd (score: 1): Author: Gary <gary_mayfield@hotmail.com>; Date: Tue, 23 Mar 2021 03:37:31 +0000; Kim, I hear it on the portable when connected to the vertical antenna, but will undertake an antenna substitution experiment this weekend. Keep the suggestions coming! 73 and Thanks, Gary "Joe", kk0s; /archives//html/RFI/2021-03/msg00088.html (22,916 bytes)
58. Re: [RFI] New Interference at kk0sd (score: 1): Author: Gary <gary_mayfield@hotmail.com>; Date: Tue, 23 Mar 2021 22:20:16 +0000; Don, I hope to hook the loop to my FT-847 this weekend as it is on my list of tests. It is a little more involved to do. I dont hear much in general with antennas in my basement shackI probably have; /archives//html/RFI/2021-03/msg00097.html (27,605 bytes)
59. Re: [RFI] New Interference at kk0sd (score: 1): Author: Gary <gary_mayfield@hotmail.com>; Date: Wed, 24 Mar 2021 00:20:54 +0000; My loop has served me well. It sounds like I need to add another loop to my arsenal. If the VHF effort strikes out I will go that route next. Thanks Folks and All the help is appreciated! 73, Gary "J; /archives//html/RFI/2021-03/msg00100.html (9,761 bytes)
60. Re: [RFI] New Interference at kk0sd (score: 1): Author: Gary <gary_mayfield@hotmail.com>; Date: Wed, 24 Mar 2021 00:22:55 +0000; Thanks Dave! Another weapon for the arsenal. 73 and Keep the ideas coming! Gary Joe kk0sd Another trick I've used in DFing interference is to construct a shortened helically wound dipole on a wooden; /archives//html/RFI/2021-03/msg00101.html (33,406 bytes)

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