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41. Re: [RFI] Update on the Boston area RFI (score: 1): Author: Missouri Guy <n0tt1@juno.com>; Date: Sat, 13 Feb 2010 18:35:27 +0000; It sounds like they needed some attenuation in front of the receiver. With my own RFI radio, I use 6 -10 -20 db switchable steps between the antenna and radio, and sometimes that's not enough when c; /archives//html/RFI/2010-02/msg00068.html (6,887 bytes)
42. Re: [RFI] Update on the Boston area RFI (score: 1): Author: Missouri Guy <n0tt1@juno.com>; Date: Sun, 14 Feb 2010 01:48:54 +0000; If you are looking at the scope on the RFI receiver, with enough attenuation inserted, you probably wouldn't see the weaker "spikes" that were present before. There should be enough attenuation "cra; /archives//html/RFI/2010-02/msg00074.html (7,712 bytes)
43. Re: [RFI] Snow and Power Lines (score: 1): Author: Missouri Guy <n0tt1@juno.com>; Date: Wed, 17 Feb 2010 02:48:14 +0000; At my QTH, when it rains the powerline noise goes completely silent. Snow does the same thing after it has just a little time to melt. I have to ask...Are you *sure* the noise you hear isn't just pr; /archives//html/RFI/2010-02/msg00085.html (7,565 bytes)
44. [RFI] Sears battery charger model #200.71222 (score: 1): Author: Missouri Guy <n0tt1@juno.com>; Date: Thu, 8 Apr 2010 22:58:04 +0000; Hi Gents, FWIW: I purchased a battery charger from Sears a few days ago. I've heard that some chargers can produce a lot of RFI and this is one of them. See the model number in the subject line. When; /archives//html/RFI/2010-04/msg00012.html (7,281 bytes)
45. Re: [RFI] Sears battery charger model #200.71222 (score: 1): Author: Missouri Guy <n0tt1@juno.com>; Date: Sat, 10 Apr 2010 00:58:56 +0000; Hi Steve, You're welcome! I did return it today and politely made sure the sales person recorded my complaint correctly. She said that someone does review each return and complaint, but didn't know; /archives//html/RFI/2010-04/msg00014.html (8,805 bytes)
46. Re: [RFI] Sears battery charger model #200.71222 (score: 1): Author: Missouri Guy <n0tt1@juno.com>; Date: Sat, 10 Apr 2010 15:28:40 +0000; Yes, they did, and problem has only increased and isn't going away any time soon. It will get even worse unless some tougher laws/rules with meaningful *enforcement* are enacted. Charlie, N0TT _____; /archives//html/RFI/2010-04/msg00020.html (7,792 bytes)
47. Re: [RFI] HVAC Variable Speed Motors (score: 1): Author: Missouri Guy <n0tt1@juno.com>; Date: Sun, 11 Apr 2010 16:08:30 +0000; FWIW, we have a ground-source heat pump system that DOES use a variable speed fan motor. NO RFI that I've heard on 160m. The make is Climate Master, Tranquiltity-20, model TSV042AGC01ARKS. The insta; /archives//html/RFI/2010-04/msg00033.html (7,265 bytes)
48. Re: [RFI] Noise (score: 1): Author: Missouri Guy <n0tt1@juno.com>; Date: Tue, 3 Aug 2010 14:53:01 +0000; Warren, I would not suspect the panels are generating RFI at all. More likely, it's the devices that convert the DC from the panels to the 60-cycle AC that the home uses. 73, Charlie, N0TT __________; /archives//html/RFI/2010-08/msg00007.html (7,266 bytes)
49. [RFI] Video output for a 'scope? (score: 1): Author: Missouri Guy <n0tt1@juno.com>; Date: Wed, 8 Dec 2010 20:12:30 +0000; Hi Gents, I now have a portable o'scope and I want to observe the RF "signature" of a noise. One of my RFI books said to use a radio with a video output. I'm not really sure what the author meant by; /archives//html/RFI/2010-12/msg00058.html (6,772 bytes)
50. Re: [RFI] Topband: Noise problem question (score: 1): Author: Missouri Guy <n0tt1@juno.com>; Date: Thu, 22 Dec 2011 03:38:53 +0000; I like that idea...might work even with daytime sun....I might try that on my homebrew detector. I'd like to see what Jerry K4SAV has come up with RE increased sensitivity....anybody have a schematic; /archives//html/RFI/2011-12/msg00007.html (10,797 bytes)
51. Re: [RFI] MFJ-856 (score: 1): Author: Missouri Guy <n0tt1@juno.com>; Date: Mon, 23 Apr 2012 16:37:51 +0000; Well, I have to check in on this.... I have the MFJ 852, the RFI RX with the "dipole. The RX, I'll bet is the same as the newer 856. The 852, was worthless with just the dipole. Otherwise it's a simp; /archives//html/RFI/2012-04/msg00061.html (8,680 bytes)
52. Re: [RFI] 1999 Ford Diesel Pickup.jRFI Issues. (score: 1): Author: Missouri Guy <n0tt1@juno.com>; Date: Fri, 27 Apr 2012 21:38:41 +0000; Check out W8JI's website (w8ji.com). He purchased a similar truck like yours and solved his RFI problem (if memory serves) with a flexible strap between the cab and box. 73, Charlie, N0TT F250SD 7.3L; /archives//html/RFI/2012-04/msg00072.html (8,889 bytes)
53. Re: [RFI] Topband: Home Depot LED bulb interference. (score: 1): Author: Missouri Guy <n0tt1@juno.com>; Date: Fri, 27 Apr 2012 22:01:43 +0000; Good advice! And make sure the clerk writes down the real problem on their return ticket. "Doesn't want" as a reason just won't work. Charlie, N0TT _______________________________________________ RF; /archives//html/RFI/2012-04/msg00074.html (6,886 bytes)
54. Re: [RFI] Lightning Protection (score: 1): Author: Missouri Guy <n0tt1@juno.com>; Date: Mon, 2 Jul 2012 15:50:07 +0000; Hmmm...loops in coax. I always wondered why the "pro" installers put loops in the coax feeds. This is on my satelite internet feed. The same kind of loops are on my Dish Network antenna feedlines. Th; /archives//html/RFI/2012-07/msg00023.html (10,890 bytes)
55. Re: [RFI] Lightning Protection (score: 1): Author: Missouri Guy <n0tt1@juno.com>; Date: Mon, 2 Jul 2012 18:02:37 +0000; I agree on the vaporization. The installer deliberately made the loops, then cut off the excess coax and installed the connectors. The dish is grounded directly via a #12 copper wire to a ~4ft ground; /archives//html/RFI/2012-07/msg00030.html (14,327 bytes)
56. Re: [RFI] MFJ-856 oddity (score: 1): Author: Missouri Guy <n0tt1@juno.com>; Date: Wed, 15 Aug 2012 02:15:05 +0000; Paul, I haven't experienced the same problem as yours. I use a homebrew Moxon antenna for my RFI chasing. I put several #43 beads on the coax right at the antenna driven element and at the receiver.; /archives//html/RFI/2012-08/msg00076.html (10,006 bytes)
57. Re: [RFI] GE Microwave (score: 1): Author: Missouri Guy <n0tt1@juno.com>; Date: Mon, 27 Aug 2012 20:26:12 +0000; Richard, I've heard that some microwaves use switching power supplies instead of a *heavy*, conventional transformer. If your appliance uses the switching supply, chances are that it's "on" all the t; /archives//html/RFI/2012-08/msg00116.html (8,459 bytes)
58. [RFI] Mains filter for test bench (score: 1): Author: Missouri Guy <n0tt1@juno.com>; Date: Wed, 7 Nov 2012 00:38:30 +0000; Hi Gents, I need a simple mains filter for my test bench to attenuate noise on the AC line that powers some sensitive instruments. Power is via a dedicated, 15-amp 117vac line, directly from the AC m; /archives//html/RFI/2012-11/msg00025.html (6,972 bytes)
59. [RFI] Oh, happy daze!! (score: 1): Author: Missouri Guy <n0tt1@juno.com>; Date: Thu, 6 Dec 2012 01:40:06 +0000; Hi Gents, The neighbor lady has been having some difficulty getting her FENCERS to "work". She has new "chargers", rated for something like 10 miles, and just guessing here, I'll bet she doesn't have; /archives//html/RFI/2012-12/msg00015.html (7,006 bytes)
60. Re: [RFI] Radar Engineers RFI Analyzers (score: 1): Author: Missouri Guy <n0tt1@juno.com>; Date: Tue, 25 Dec 2012 20:03:28 +0000; Alan, (CC'd to the list) Are the spikes displayed on your 'scope very *narrow* like those displayed on a Radar Engineers Model 240A or 242? (As seen on their web page ads: http://www.radarengineers.c; /archives//html/RFI/2012-12/msg00129.html (10,762 bytes)

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