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281. Re: [RFI] Sling Link RFI (score: 1): Author: Pete Smith N4ZR <n4zr@contesting.com>; Date: Thu, 12 Jul 2012 07:02:46 -0400; Didn't the ARRL do some work with the manufacturer of a similar device a few years ago. As I recall, the approach was to notch the amateur bands so that the thing didn't attempt to use them for trans; /archives//html/RFI/2012-07/msg00048.html (9,544 bytes)
282. [RFI] Noise emitted by rotator (score: 1): Author: Pete Smith N4ZR <n4zr@contesting.com>; Date: Sat, 04 Aug 2012 21:32:48 -0400; I've started noticing that on 10 meters my top Yaesu G-1000 rotator has begun to emit broadband white noise when the antenna is actually turning. Any ideas what the cause could be? 73, Pete N4ZR The; /archives//html/RFI/2012-08/msg00013.html (7,209 bytes)
283. Re: [RFI] Noise emitted by rotator (score: 1): Author: Pete Smith N4ZR <n4zr@contesting.com>; Date: Sun, 05 Aug 2012 06:58:38 -0400; Thanks to everyone for their ideas on this. I had come to pretty much the same conclusion as Dave about the filter, maybe with some support as well for the idea that the brushes in the motor are wear; /archives//html/RFI/2012-08/msg00019.html (11,127 bytes)
284. Re: [RFI] Here we go again (score: 1): Author: Pete Smith N4ZR <n4zr@contesting.com>; Date: Wed, 05 Sep 2012 06:58:28 -0400; Could be a lot worse. ARRL has worked with the Homplug Alliance since before the year 2000 to ensure that amateur bands are protected. See <http://www.arrl.org/forum/topics/view/23> for a full discus; /archives//html/RFI/2012-09/msg00009.html (8,166 bytes)
285. Re: [RFI] just what everyone needs! (score: 1): Author: Pete Smith N4ZR <n4zr@contesting.com>; Date: Sun, 09 Sep 2012 09:51:27 -0400; Would you like snake oil with that? 73, Pete N4ZR The World Contest Station Database, at www.conteststations.com The Reverse Beacon Network at http://reversebeacon.net, blog at reversebeacon.blogspot; /archives//html/RFI/2012-09/msg00022.html (8,178 bytes)
286. Re: [RFI] Noise changes when room lights turn on / off (score: 1): Author: Pete Smith N4ZR <n4zr@contesting.com>; Date: Sat, 15 Sep 2012 08:03:23 -0400; This may be in the category of "you should never say never, when it comes to RFI". Back in the 80s, when I lived in a townhouse, I was focusing on 80 meters to finish 5BDXCC. I became aware of local; /archives//html/RFI/2012-09/msg00078.html (14,901 bytes)
287. Re: [RFI] Noise changes when room lights turn on / off (score: 1): Author: Pete Smith N4ZR <n4zr@contesting.com>; Date: Sat, 15 Sep 2012 09:20:50 -0400; But the frequency selectivity was interesting. Of course, we civilians didn't have wideband receivers in those days, or means of visualizing signals over a frequency domain, but this was nothing like; /archives//html/RFI/2012-09/msg00080.html (16,488 bytes)
288. Re: [RFI] Review of MFJ-856 (score: 1): Author: Pete Smith N4ZR <n4zr@contesting.com>; Date: Sat, 15 Sep 2012 10:02:21 -0400; Thanks Dave for the info on the MFJ unit. Years ago I tested their predecessor, which had just a dipole, and a sper-reger receiver - not very useful! As long as you don't need calibrated steps and yo; /archives//html/RFI/2012-09/msg00082.html (7,929 bytes)
289. Re: [RFI] ISOBAR (score: 1): Author: Pete Smith N4ZR <n4zr@contesting.com>; Date: Mon, 17 Sep 2012 06:20:45 -0400; Our whole-house protector (from the power company) comes with good insurance for things inside the house provided that you cascade a point-of-use surge protector. They seem to assume that the latter; /archives//html/RFI/2012-09/msg00096.html (11,871 bytes)
290. Re: [RFI] ISOBAR (score: 1): Author: Pete Smith N4ZR <n4zr@contesting.com>; Date: Mon, 17 Sep 2012 06:22:04 -0400; This happened to me repeatedly with nearby strikes, until I went to a wireless network. 73, Pete N4ZR The World Contest Station Database, at www.conteststations.com The Reverse Beacon Network at http; /archives//html/RFI/2012-09/msg00097.html (8,314 bytes)
291. Re: [RFI] ISOBAR (score: 1): Author: Pete Smith N4ZR <n4zr@contesting.com>; Date: Mon, 17 Sep 2012 22:14:40 -0400; I guess what I was asking was whether the snubbing at the power entry would allow MOVs to work for the branch circuit protection a cost-effective share of the time. I have experienced problems with E; /archives//html/RFI/2012-09/msg00104.html (11,141 bytes)
292. Re: [RFI] ISOBAR (score: 1): Author: Pete Smith N4ZR <n4zr@contesting.com>; Date: Tue, 18 Sep 2012 07:30:43 -0400; I use a piece of 3/4 inch copper pipe running along the rear of my desk as a ground bus. All of my radios, computers etc. are fed off a single branch, and each is grounded to the pipe by a short, dir; /archives//html/RFI/2012-09/msg00108.html (10,034 bytes)
293. Re: [RFI] ISOBAR (score: 1): Author: Pete Smith N4ZR <n4zr@contesting.com>; Date: Tue, 18 Sep 2012 16:35:43 -0400; Answers interspersed. 73, Pete N4ZR The World Contest Station Database, at www.conteststations.com The Reverse Beacon Network at http://reversebeacon.net, blog at reversebeacon.blogspot.com, spots at; /archives//html/RFI/2012-09/msg00125.html (11,537 bytes)
294. Re: [RFI] ISOBAR (score: 1): Author: Pete Smith N4ZR <n4zr@contesting.com>; Date: Wed, 19 Sep 2012 06:43:16 -0400; Hi Dale - Yes, I do disconnect at the point of entry to the shack, and no, there was no evidence of scorching on the roof. I was in the shack when the hit occurred, and it was very loud and seemingly; /archives//html/RFI/2012-09/msg00128.html (14,385 bytes)
295. [RFI] 8-KHZ-spaced low frequency RFI (score: 1): Author: Pete Smith N4ZR <n4zr@contesting.com>; Date: Tue, 23 Oct 2012 09:27:26 -0400; I'm seeing very crisp, clean 8-KHz-spaced RFI spikes on 160 and 80 meters (on HDSDR). Because it is clean and does not appear to drift noticeably, I'm inclined to rule out switching power supplies. A; /archives//html/RFI/2012-10/msg00031.html (7,182 bytes)
296. Re: [RFI] rfi problem (score: 1): Author: Pete Smith N4ZR <n4zr@contesting.com>; Date: Thu, 01 Nov 2012 07:34:16 -0400; Don't let them tell you this. There are specific FCC requirements for signal "egress", so if you can identify the frequency with a cable TV channel, and pin it on them, then they are indeed required; /archives//html/RFI/2012-11/msg00000.html (6,830 bytes)
297. [RFI] Inexpensive line filtering options was Re: Nineteen Hour Noise (score: 1): Author: Pete Smith N4ZR <n4zr@contesting.com>; Date: Sat, 09 Mar 2013 08:37:25 -0500; Excellent presentation on the web site, Tom - very nice. Looking at your designs, I wonder if a computer power supply input filter such as the Qualtek 858-03/007 might be a reasonable alternative, in; /archives//html/RFI/2013-03/msg00032.html (12,501 bytes)
298. Re: [RFI] Cree LED Bulbs? (score: 1): Author: Pete Smith N4ZR <n4zr@contesting.com>; Date: Mon, 11 Mar 2013 08:27:21 -0400; This is probably classic switching supply noise - the linear power supply/battery would be a good way to rule out the lights themselves. You could, unfortunately, have radiation both from the AC inpu; /archives//html/RFI/2013-03/msg00049.html (11,985 bytes)
299. Re: [RFI] Cree LED Bulbs? (score: 1): Author: Pete Smith N4ZR <n4zr@contesting.com>; Date: Tue, 12 Mar 2013 06:46:56 -0400; Scrood indeed, but the good news is that Lowes and Home Depot (if they are carrying the same type) may be big enough to be susceptible to pressure. What these systems are doing is contrary to FCC reg; /archives//html/RFI/2013-03/msg00062.html (13,609 bytes)
300. Re: [RFI] Cree LED Bulbs? (score: 1): Author: Pete Smith N4ZR <n4zr@contesting.com>; Date: Fri, 15 Mar 2013 09:38:18 -0400; Sure, but somebody has to get the ball rolling. You sound like you have the motivation. Nothing to stop you fromworking with the guy in the meantime. You could even buy a starter set of the same ligh; /archives//html/RFI/2013-03/msg00075.html (15,737 bytes)

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