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References: [ +from:k1ttt@verizon.net: 111 ]

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101. Re: [RFI] Enphase IQ7 microinverter experiences? (score: 1): Author: "David Robbins" <k1ttt@verizon.net>; Date: Thu, 16 Aug 2018 18:01:15 -0500; I have older enphase m190 microinverters on my array and only needed 3 clip on ferrites to get rid of a little noise on 10m after they were installed. Other than that they are nice and quiet. David R; /archives//html/RFI/2018-08/msg00026.html (7,980 bytes)
102. Re: [RFI] Bad noise on 2m band, only during day (score: 1): Author: "David Robbins" <k1ttt@verizon.net>; Date: Wed, 22 Aug 2018 14:35:06 -0500; The hourly plot looks like the output of a solar array. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://wiki.k1ttt.net AR-Cluster node: 145.69MHz or telnet://k1ttt.net:7373 Hello everyo; /archives//html/RFI/2018-08/msg00043.html (8,255 bytes)
103. Re: [RFI] 1 second pulse on 30M (score: 1): Author: "David Robbins" <k1ttt@verizon.net>; Date: Thu, 11 Oct 2018 16:09:20 -0500; I've heard that before also. if you can do dual rx it is synced nicely with wwv. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://wiki.k1ttt.net AR-Cluster node: 145.69MHz or telnet://k1; /archives//html/RFI/2018-10/msg00012.html (8,507 bytes)
104. [RFI] 80m noise? (score: 1): Author: "David Robbins" <k1ttt@verizon.net>; Date: Sat, 13 Oct 2018 19:34:40 -0500; hmmmm, 2300z saturday night, also was there last night. my guest operator has a trace on his waterfall between 3581khz and 3583khz that isn't any data mode i know of, and by ear it almost sounds like; /archives//html/RFI/2018-10/msg00027.html (7,283 bytes)
105. 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)
106. Re: [RFI] Investigating receive noise - got a few questions (score: 1): Author: "David Robbins" <k1ttt@verizon.net>; Date: Sat, 10 Nov 2018 18:02:27 -0500; The only thing I can tell from the first few seconds of that recording are that the big wide pulses are probably lightning, though there is a possibility of local power line arcing. It also looks lik; /archives//html/RFI/2018-11/msg00040.html (11,196 bytes)
107. Re: [RFI] 160 Meter RFI (score: 1): Author: "David Robbins" <k1ttt@verizon.net>; Date: Thu, 06 Dec 2018 17:04:43 -0500; I would start with the smallest antenna you can hear it on from home. I have had good luck with a 3 or 4 turn loop about 18" in diameter, and for closer in just the built in ferrite loopstick in a gr; /archives//html/RFI/2018-12/msg00031.html (13,067 bytes)
108. Re: [RFI] external noise source identification (score: 1): Author: "David Robbins" <k1ttt@verizon.net>; Date: Fri, 21 Dec 2018 18:45:24 -0500; Well, if you can pick it up on 2' or ladder line in your basement it has to be close. When you power down your house be sure you kill any devices with batteries like UPS's or battery powered or backe; /archives//html/RFI/2018-12/msg00054.html (10,657 bytes)
109. Re: [RFI] Christmas light display - SOLVED (score: 1): Author: "David Robbins" <k1ttt@verizon.net>; Date: Fri, 11 Jan 2019 08:10:38 -0500; There are several different designs for distribution line arresters. Early ones were a simple spark gap in a tube arranged so the arc blew itself out the tube to stop the conduction, I doubt if there; /archives//html/RFI/2019-01/msg00003.html (13,903 bytes)
110. Re: [RFI] What is a MOV (score: 1): Author: "David Robbins" <k1ttt@verizon.net>; Date: Fri, 11 Jan 2019 11:57:54 -0500; Note that the ones used on distribution power lines often look like fat insulators, either plastic or porcelain... you can tell when you examine them because they will have a wire from the top going; /archives//html/RFI/2019-01/msg00006.html (10,541 bytes)
111. Re: [RFI] A troubling new source of RFI (score: 1): Author: "David Robbins" <k1ttt@verizon.net>; Date: Thu, 17 Jan 2019 11:25:07 -0500; Thats funny, I had an Ethernet over power lines for a while and with 6 HF stations at 1500w running with antennas all around the house I never heard it and it worked just fine. David Robbins K1TTT e-; /archives//html/RFI/2019-01/msg00015.html (10,448 bytes)

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