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41. Re: [RFI] Wall St.Journal Page One FCC Gets Serious on RFI (score: 1): Author: David Robbins <k1ttt@verizon.net>; Date: Wed, 12 Mar 2014 10:27:00 -0500 (CDT); 1. document what you have observed and any steps you have taken to contact the owner of the source of the noise to resolve it 2. contact other services, police, fire, airports, broadcast stations, if; /archives//html/RFI/2014-03/msg00011.html (9,120 bytes)
42. Re: [RFI] "Quiet" RS 75 watt inverter (score: 1): Author: David Robbins <k1ttt@verizon.net>; Date: Mon, 24 Mar 2014 14:33:06 -0500 (CDT); believe it or not there are hams with noise levels around s0 most of the time. if I had an s2 noise that wasn't from atmospherics I would be out hunting! Question: Aren't you the guy talking about ch; /archives//html/RFI/2014-03/msg00159.html (8,086 bytes)
43. Re: [RFI] ARRL to FCC... (score: 1): Author: David Robbins <k1ttt@verizon.net>; Date: Wed, 26 Mar 2014 13:51:40 -0500 (CDT); how much time and effort have you already spent on this? how much more is it going to cost to get your antique noise hunting stuff working? you can buy a brand new 40" LED TV for under $400, why not; /archives//html/RFI/2014-03/msg00200.html (18,331 bytes)
44. Re: [RFI] Grow-light.. (score: 1): Author: David Robbins <k1ttt@verizon.net>; Date: Thu, 27 Mar 2014 10:22:18 -0500 (CDT); the one I had brought here to try to filter was a high pressure sodium light which is just like those pink street lights. and yes, they are darn bright! the one I had was 1kw which is a lot of light!; /archives//html/RFI/2014-03/msg00216.html (8,253 bytes)
45. Re: [RFI] Grow-light.. (score: 1): Author: David Robbins <k1ttt@verizon.net>; Date: Thu, 27 Mar 2014 10:42:34 -0500 (CDT); they also change the timing so you can tell when they are getting ready to harvest. just point out to growers that cops can find them with their AM car radios and can even tell when plants are mature; /archives//html/RFI/2014-03/msg00219.html (8,930 bytes)
46. Re: [RFI] Link-coupled loop - more. (score: 1): Author: David Robbins <k1ttt@verizon.net>; Date: Wed, 02 Apr 2014 06:17:19 -0500 (CDT); the odd bearings may be a different source that just sounds the same. that would also explain not getting great nulls in some spots. OK. My son, Brendan KB7QEU and I went out after lunch and took 8 m; /archives//html/RFI/2014-04/msg00020.html (9,747 bytes)
47. Re: [RFI] Broadcast station RFI Mixing - RESOLVED (score: 1): Author: David Robbins <k1ttt@verizon.net>; Date: Thu, 29 May 2014 06:37:36 -0500 (CDT); if you don't have a grounded driven element so the coax braid connects to the ring through the boom you should probably run a ground wire from the tower in parallel with the coax but connected to the; /archives//html/RFI/2014-05/msg00090.html (12,093 bytes)
48. Re: [RFI] FW: Low Band Interference Report (non-ham radio reports) (score: 1): Author: David Robbins <k1ttt@verizon.net>; Date: Tue, 08 Jul 2014 11:34:13 -0500 (CDT); that may not only occur in fluorescent ballasts. I bought 2 LED bulbs, no-name Chinese made, one was marked 90-240v, the other marked just 120v. the wide voltage one threw hash everywhere, the 120v o; /archives//html/RFI/2014-07/msg00010.html (8,945 bytes)
49. Re: [RFI] New EOC Building (score: 1): Author: David Robbins <k1ttt@verizon.net>; Date: Mon, 14 Jul 2014 06:57:00 -0500 (CDT); I would recommend the old incandescent heavy duty bulbs in those big glass and metal protective fixtures... those are probably the only way to be sure the bulbs aren't stolen, and will be sure to not; /archives//html/RFI/2014-07/msg00028.html (7,717 bytes)
50. Re: [RFI] USB Spectrum Analyzer (score: 1): Author: David Robbins <k1ttt@verizon.net>; Date: Thu, 25 Sep 2014 12:20:36 -0500 (CDT); I have used the sdr-iq receiver (http://www.rfspace.com/RFSPACE/SDR-IQ.html) for rfi and analysis of grow lamp noise. it only goes to about 190khz bandwidth but is quite usable and has a wide range o; /archives//html/RFI/2014-09/msg00072.html (9,511 bytes)
51. Re: [RFI] Grow Light Question... (score: 1): Author: David Robbins <k1ttt@verizon.net>; Date: Thu, 13 Nov 2014 10:19:54 -0600 (CST); when the one I found here was brought to me to build a filter for it the guy said he put back on his old ballast which sounded like it was a magnetic one, it was perfectly quiet. he says he wanted to; /archives//html/RFI/2014-11/msg00027.html (9,467 bytes)
52. Re: [RFI] Zapped (score: 1): Author: David Robbins <k1ttt@verizon.net>; Date: Mon, 23 Feb 2015 11:47:07 -0600 (CST); I would can the microwave, if it is leaking that much its probably the door seal or a bad design to start with. I have 2 microwaves in the house and have no problem with running 3 waps with maybe 15-; /archives//html/RFI/2015-02/msg00070.html (7,665 bytes)
53. Re: [RFI] Line filters for VHF? (score: 1): Author: David Robbins <k1ttt@verizon.net>; Date: Wed, 20 May 2015 14:31:07 -0500 (CDT); I wonder if the 3 cores you used stopped most of the junk from that one box, but you were still seeing junk coming in from the rest of the building or outside?? here is one source of power filters fo; /archives//html/RFI/2015-05/msg00017.html (8,540 bytes)
54. Re: [RFI] Internet Modem / Router Cable Length and RFI (score: 1): Author: David Robbins <k1ttt@verizon.net>; Date: Mon, 01 Jun 2015 06:46:29 -0500 (CDT); I would worry more about the long cat5 cable, both for rfi and susceptibility to your rf getting into it. you might also consider a wireless repeater to extend coverage. All: I'm about to relocate th; /archives//html/RFI/2015-06/msg00003.html (8,097 bytes)
55. Re: [RFI] [Bulk] Re: Electric Fence pulsing (will get worse soon !) (score: 1): Author: David Robbins <k1ttt@verizon.net>; Date: Thu, 30 Jul 2015 14:53:50 -0500 (CDT); why is this so hard? special radios, special antennas, ultrasonics, etc, etc, etc... if we needed all that stuff before hunting for something we would never get it done. I have 2 radios I have used f; /archives//html/RFI/2015-07/msg00131.html (9,734 bytes)
56. Re: [RFI] RFI With Smoke Detectors (score: 1): Author: David Robbins <k1ttt@verizon.net>; Date: Tue, 18 Aug 2015 11:23:50 -0500 (CDT); replacement is always an option for smoke detectors... most of them have a limited lifetime because the radioactive source they use decays to a point that they don't work any more. Unfortunately, rep; /archives//html/RFI/2015-08/msg00056.html (10,832 bytes)
57. Re: [RFI] Smoke Detectors (score: 1): Author: David Robbins <k1ttt@verizon.net>; Date: Wed, 19 Aug 2015 12:14:06 -0500 (CDT); does that mean that every house is assumed to have a central alarm panel and monitoring service?? "Texas, installations done by licensed installers require that the smoke detectors be powered by only; /archives//html/RFI/2015-08/msg00068.html (8,306 bytes)
58. Re: [RFI] Fence wire material advice (score: 1): Author: David Robbins <k1ttt@verizon.net>; Date: Thu, 15 Oct 2015 14:46:38 -0500 (CDT); its best to go with fence that has welded or brazed joints instead of just twisted or crossing wires. any place that can get corrosion or water in a joint is a place for rectification or sparking to; /archives//html/RFI/2015-10/msg00034.html (9,071 bytes)
59. Re: [RFI] Interesting Case of VHF RFI caused by Chilled Water Controller (score: 1): Author: David Robbins <k1ttt@verizon.net>; Date: Wed, 02 Dec 2015 13:45:23 -0600 (CST); were the cabinets metal or plastic? if plastic try simply wrapping it in aluminum foil to see if that cuts the radiation distance enough. if so a metal enclosure or box over the current enclosure cou; /archives//html/RFI/2015-12/msg00032.html (12,322 bytes)
60. Re: [RFI] Finding house noise sources (score: 1): Author: David Robbins <k1ttt@verizon.net>; Date: Tue, 19 Jan 2016 07:38:14 -0600 (CST); yes there is... https://www.google.com/#q=circuit+tracer usually you turn the breaker off, plug in one of the units to an outlet on the circuit and that puts a signal on the wire that you can trace.; /archives//html/RFI/2016-01/msg00019.html (9,115 bytes)

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