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41. Re: [RFI] House Ground (score: 1): Author: donovanf@starpower.net; Date: Wed, 16 Mar 2016 01:13:05 -0400 (EDT); Hi Tom, Lack of a grounding electrode shouldn't affect RFI; however, if its true it isn't compliant with the National Electric Code and\ it might be an electrical safety hazard. Are you sure your ser; /archives//html/RFI/2016-03/msg00047.html (8,381 bytes)
42. Re: [RFI] Broadband RFI... (score: 1): Author: donovanf@starpower.net; Date: Sun, 5 Jun 2016 01:09:48 -0400 (EDT); http://www.dxengineering.com/techarticles/dxepressreleases/dx-engineering-acquires-clifton-laboratories -- Original Message -- Tom, Thanks. I was looking at the Clifton Labs but unfortunately they no; /archives//html/RFI/2016-06/msg00030.html (9,797 bytes)
43. Re: [RFI] Control cable (score: 1): Author: donovanf@starpower.net; Date: Wed, 29 Jun 2016 12:16:09 -0400 (EDT); Hi Gary, I use outdoor direct burial Cat 5 flooded cable for many of my control lines. Many of the inexpensive outdoor Cat 5 cables use copper plated aluminum wires which are very fragile. Suggest yo; /archives//html/RFI/2016-06/msg00086.html (8,986 bytes)
44. Re: [RFI] impedance mismatching in coax (score: 1): Author: donovanf@starpower.net; Date: Wed, 28 Dec 2016 15:58:22 -0500 (EST); Jim and Aaron, If you measure the shield isolation of a 1:1 transformer you'll discover -- contrary to popular belief -- that it provides only a modest amount of common mode rejection. K9YC's common; /archives//html/RFI/2016-12/msg00094.html (10,208 bytes)
45. Re: [RFI] More on 160 M RFI - significance of hum bands (score: 1): Author: donovanf@starpower.net; Date: Wed, 29 Mar 2017 19:26:03 -0400 (EDT); Hi Pete, Nothing in your report suggests power line noise. The best way to isolate RFI is always by using directive antennas to find the source. A small loop antenna should do the job for you. 73 Fra; /archives//html/RFI/2017-03/msg00096.html (9,599 bytes)
46. Re: [RFI] death of plasma (score: 1): Author: donovanf@starpower.net; Date: Fri, 4 Aug 2017 12:25:16 -0400 (EDT); Hi Jim, My area has built up considerably over the last 30 years since I built my QTH surrounded by thousands of acres of mostly farmland with only six small homes within 2000 feet. At that time its; /archives//html/RFI/2017-08/msg00016.html (11,042 bytes)
47. Re: [RFI] SO2R and 2nd harmonic (score: 1): Author: donovanf@starpower.net; Date: Thu, 14 Sep 2017 13:13:14 -0400 (EDT); Hi Luca, Dave's reply is the only one that correctly addresses the problem you described. You described your problem as " rise up floor noise level about 60 khz on each side from main harmonic freque; /archives//html/RFI/2017-09/msg00008.html (12,678 bytes)
48. Re: [RFI] SO2R and 2nd harmonic (score: 1): Author: donovanf@starpower.net; Date: Fri, 15 Sep 2017 14:20:33 -0400 (EDT); Hi Jim, Your 1/2 mile RF flooding RFI experience is similar to mine. I've only been able to resolve a few RF flooding RFI cases from nearby homes. In each case the problem was a wall wart, especially; /archives//html/RFI/2017-09/msg00016.html (9,805 bytes)
49. Re: [RFI] RFI Digest, Vol 181, Issue 27 (score: 1): Author: donovanf@starpower.net; Date: Tue, 27 Feb 2018 18:56:01 -0500 (EST); This is the craziest thread I've ever experienced on the RFI reflector Brady Connectors... Brundy Connectors... Burndy Bugs Brady Markers Bug Nuts We need to Bugs Bunny as the Swami in "Bowery Bugs"; /archives//html/RFI/2018-02/msg00109.html (15,624 bytes)
50. [RFI] 175 kHz spurious signals in the vicinity of 14 MHz only (score: 1): Author: donovanf@starpower.net; Date: Tue, 13 Mar 2018 14:27:34 -0400 (EDT); This RFI appears to be continuous and may be at some distance from my QTH. I have not found this RFI on any ham band except 14 MHz, where it occurs on approximately 175 kHz increments. It extends at; /archives//html/RFI/2018-03/msg00034.html (7,874 bytes)
51. Re: [RFI] HomePlug OK? (score: 1): Author: donovanf@starpower.net; Date: Sat, 1 Sep 2018 21:05:38 -0400 (EDT); My Verizon FioS Quantum Gateway doesn't provide reliable wifi coverage throughout my home and adjacent outdoor living spaces. A wifi range extender completely solved my problem without resorting to p; /archives//html/RFI/2018-09/msg00004.html (10,196 bytes)
52. 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)
53. [RFI] A Bizzare EMI Story (score: 1): Author: donovanf@starpower.net; Date: Tue, 6 Nov 2018 22:30:58 -0500 (EST); So after taking a few years off from radio, over the summer I decided to rebuild my station and antennas and get back on the air. Was doing fine until a few weeks ago, my noise level was S9 on 80 met; /archives//html/RFI/2018-11/msg00019.html (7,674 bytes)
54. Re: [RFI] Air Conditioner / Heat Pump recommendations (score: 1): Author: donovanf@starpower.net; Date: Thu, 21 Feb 2019 13:04:50 -0500 (EST); Three years ago I had a Trane/Carrier heat pump system installed. Trane and Carrier make at least 17 models and at least 16 are exactly identical. This is the approach I recommend to any serious radi; /archives//html/RFI/2019-02/msg00066.html (9,900 bytes)
55. Re: [RFI] Fair-Rite Common Mode Chokes (score: 1): Author: donovanf@starpower.net; Date: Thu, 18 Jul 2019 10:04:30 -0400 (EDT); Joe, We use a fifty foot length of RG-8X on each of the nine dipoles used at the W3AO mega-Field Days. We then transition to hundreds of feet of RG-213 to reach the centrally located tent on our 1000; /archives//html/RFI/2019-07/msg00055.html (9,104 bytes)
56. Re: [RFI] Fair-Rite Common Mode Chokes (score: 1): Author: donovanf@starpower.net; Date: Thu, 18 Jul 2019 13:42:14 -0400 (EDT); Hi Joe, I often remind hams that coaxial cable is a three conductor cable when connected to the feed point of an antenna. Two of the conductors are the obvious ones, but the outside of the shield for; /archives//html/RFI/2019-07/msg00059.html (12,480 bytes)
57. Re: [RFI] Inter-station interference question. (score: 1): Author: donovanf@starpower.net; Date: Thu, 21 Nov 2019 13:06:33 -0500 (EST); "Yes the harmonic DOES have a growl to it!" Hi Martin, You've described a classic symptom of an intermod problem, which I refer to more specifically as "RF flooding." No amount of filtering of your t; /archives//html/RFI/2019-11/msg00039.html (9,159 bytes)
58. Re: [RFI] Quidance on finding noise? (score: 1): Author: donovanf@starpower.net; Date: Wed, 8 Jan 2020 00:08:07 -0500 (EST); Hi Kenny, The RFI you describe certainly appears to be triggered by sunset, either a streetlight or one or more outdoor lights in a residence. Night time only RFI is extremely rare on power lines. Yo; /archives//html/RFI/2020-01/msg00037.html (9,222 bytes)
59. Re: [RFI] Guidance on finding noise? (score: 1): Author: donovanf@starpower.net; Date: Sun, 12 Jan 2020 00:53:26 -0500 (EST); Hi Kenny, RFI on 160 and not on any higher frequencies isn't a typical characteristic of power line RFI. I woudn't recommend giving anyone a list of a dozen poles... 73 Frank W3LPL -- Original Messag; /archives//html/RFI/2020-01/msg00079.html (10,645 bytes)
60. Re: [RFI] Choke questions (score: 1): Author: donovanf@starpower.net; Date: Wed, 22 Jan 2020 15:05:27 -0500 (EST); We're not discussing a choke operating at very high frequencies, we discussing its performance at 1.8 or 3.5 MHz. At these frequencies, a few feet of 50 ohm transmission line such as RG-142 or RG-400; /archives//html/RFI/2020-01/msg00124.html (9,941 bytes)

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