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21. Re: [RFI] Oscilloscope requirements for power line noise locating (score: 1): Author: "Util.RFI.pro" <utility.rfi.pro@gmail.com>; Date: Sun, 30 Dec 2012 13:19:48 -0500; The capabilities of the scope are determined primarily by the frequency of the signal you want to observe. I use a scope only to observe the audio output of the built-in AM/FM radio in my work van. M; /archives//html/RFI/2012-12/msg00176.html (10,803 bytes)
22. Re: [RFI] Electrical transfomer near shack, a problem? (score: 1): Author: "Frank N. Haas KB4T" <utility.rfi.pro@gmail.com>; Date: Thu, 10 Jan 2013 08:50:35 +0000; RFI from an overhead transformer propagates by both radiation and conduction. In my experience conduction is the bigger problem and is often difficult to pinpoint. Radiation is usually limited by the; /archives//html/RFI/2013-01/msg00067.html (9,251 bytes)
23. Re: [RFI] Electrical transfomer near shack, a problem? (score: 1): Author: "Frank N. Haas KB4T" <utility.rfi.pro@gmail.com>; Date: Thu, 10 Jan 2013 15:47:01 +0000; RFI from an overhead transformer propagates by both radiation and conduction. In my experience conduction is the bigger problem and is often difficult to pinpoint. Radiation is usually limited by the; /archives//html/RFI/2013-01/msg00069.html (9,536 bytes)
24. Re: [RFI] Beads (score: 1): Author: "Util.RFI.pro" <utility.rfi.pro@gmail.com>; Date: Sun, 3 Feb 2013 20:02:21 -0500; Consider the ferrite devices sold by DX Engineering. Good prices and excellent selection. I buy my 2.5 inch ID toroid cores for making big chokes out of coax cables and power cords from Arrow Electro; /archives//html/RFI/2013-02/msg00004.html (8,928 bytes)
25. Re: [RFI] Ultra Sonics (score: 1): Author: "Frank N. Haas KB4T" <utility.rfi.pro@gmail.com>; Date: Sun, 21 Apr 2013 21:18:46 -0400; I have all of the Radar Engineers equipment. As a utility interference investigator I'm fortunate to have good tools. The ultrasonic unit is only useful AFTER I've already found the source pole. Even; /archives//html/RFI/2013-04/msg00008.html (9,882 bytes)
26. [RFI] Recommended All Band Receiver (score: 1): Author: "Frank N. Haas KB4T" <utility.rfi.pro@gmail.com>; Date: Sun, 21 Apr 2013 21:50:27 -0400; I managed to hose up the battery door on the Grundig G4000 AM/FM/SAW portable receiver I have enjoyed using for the last 2 years. I checked a variety of vendors and could not find any for sale. So I; /archives//html/RFI/2013-04/msg00009.html (7,549 bytes)
27. Re: [RFI] Recommended All Band Receiver (score: 1): Author: "Util.RFI.pro" <utility.rfi.pro@gmail.com>; Date: Mon, 22 Apr 2013 21:35:36 -0400; The metering is good. There is no rotatable RF Gain control. There is a switch that offers what sounds like about 10 to 20 dB of attentuation. If I need a real RF Gain control, I use the Sangean ATS-; /archives//html/RFI/2013-04/msg00016.html (10,531 bytes)
28. Re: [RFI] Ultra Sonics (score: 1): Author: "Util.RFI.pro" <utility.rfi.pro@gmail.com>; Date: Mon, 22 Apr 2013 21:48:27 -0400; Just about every full feature handheld offered to the Amateur market today has a receiver that covers .5 to 470 MHz or 1 GHz. A 3 element yagi for 150 MHz is easy to build (or buy). An attenuator is; /archives//html/RFI/2013-04/msg00017.html (14,063 bytes)
29. Re: [RFI] Recommended All Band Receiver (score: 1): Author: "Frank N. Haas KB4T" <utility.rfi.pro@gmail.com>; Date: Tue, 28 May 2013 16:03:27 -0400; As Jim pointed out, there is ample information available online about the Tecsun PL660SLV. I point the SLV part of the model number because the "brown" version off the radio is "coated" or covered wi; /archives//html/RFI/2013-05/msg00083.html (14,397 bytes)
30. [RFI] Notifying the Utility about Interference (score: 1): Author: "Frank N. Haas KB4T" <utility.rfi.pro@gmail.com>; Date: Tue, 28 May 2013 16:43:05 -0400; I find the discussion about arcing and sparking to be somewhat amusing. It's much like arguing over the importance of the number of dimples on a golf ball. I can only speak about my employer and the; /archives//html/RFI/2013-05/msg00084.html (11,181 bytes)
31. [RFI] Fwd: RFI Identification Help (score: 1): Author: "Frank N. Haas KB4T" <utility.rfi.pro@gmail.com>; Date: Tue, 12 Nov 2013 09:45:54 -0500; It's time for a reminder: Guessing what a particular RFI manifestation might be accomplishes NOTHING. If your receiver is listening on a particular frequency and is being impacted by some sort of int; /archives//html/RFI/2013-11/msg00015.html (10,946 bytes)
32. Re: [RFI] Street lights (score: 1): Author: "Frank N. Haas KB4T" <utility.rfi.pro@gmail.com>; Date: Sun, 24 Nov 2013 10:24:41 -0500; As a Utility Interference Investigator, I run into bad street lights all the time. The most common failures are cycling and constant "invisible" RFI. The cycling failure is fascinating. The photocell; /archives//html/RFI/2013-11/msg00064.html (12,939 bytes)
33. Re: [RFI] Noise... (score: 1): Author: "Frank N. Haas KB4T" <utility.rfi.pro@gmail.com>; Date: Thu, 13 Mar 2014 14:53:09 -0400; For those that don't want or can't build a suitable loop antenna system to track HF RFI sources, I remind the group of the National RF model HFDF Vector Gun active loop antenna system that has served; /archives//html/RFI/2014-03/msg00032.html (11,395 bytes)
34. Re: [RFI] Broadcast station RFI Mixing (score: 1): Author: "Util.RFI.pro" <utility.rfi.pro@gmail.com>; Date: Sun, 20 Apr 2014 13:06:32 -0400; I've been reading this thread with some interest as I recently had to prosecute an interference case for a ham who was experiencing peculiar interference on specific frequencies and portions of the 8; /archives//html/RFI/2014-04/msg00145.html (10,687 bytes)
35. Re: [RFI] Is Icom IC-T90a AM-mode good for chasing RFI? (score: 1): Author: "Utility.rfi.pro" <utility.rfi.pro@gmail.com>; Date: Fri, 19 Sep 2014 15:54:43 -0400; IC-T90a has great sensitivity, excellent receive audio in AM and FM but the signal strength indicator is lacking for precise DF work. Many T90s have indicators that are way too sensitive. They show; /archives//html/RFI/2014-09/msg00033.html (8,424 bytes)
36. Re: [RFI] Is Icom IC-T90a AM-mode good for chasing RFI? (score: 1): Author: "Utility.rfi.pro" <utility.rfi.pro@gmail.com>; Date: Fri, 19 Sep 2014 16:53:26 -0400; Mike et al: I can and I have...numerous times. Searching the archives here will turn up many recommendations. Jim K9YC just mentioned some receivers to consider in his last few posts just today. For; /archives//html/RFI/2014-09/msg00038.html (9,461 bytes)
37. Re: [RFI] RFI hunting on 160: TH-F6a? (score: 1): Author: "Frank N. Haas KB4T" <utility.rfi.pro@gmail.com>; Date: Sat, 3 Jan 2015 16:14:35 -0500; I assume that the reason some prefer the Tecsun PL-380 is COST. That's unfortunate because for $60 more (based on current Amazon.com prices) the Tecsun PL-660SLV is a MUCH better choice for all aroun; /archives//html/RFI/2015-01/msg00000.html (9,824 bytes)
38. Re: [RFI] RFI hunting on 160: TH-F6a? (score: 1): Author: "Frank N. Haas KB4T" <utility.rfi.pro@gmail.com>; Date: Sat, 3 Jan 2015 18:11:27 -0500; The PL-660 SLV is the version of the model that has a plain plastic case. At the time I bought my PL-660 I could choose between the plain (silver) plastic case and a version that a "rubberized" coati; /archives//html/RFI/2015-01/msg00003.html (9,574 bytes)
39. Re: [RFI] RFI hunting on 160: TH-F6a? (score: 1): Author: "Frank N. Haas KB4T" <utility.rfi.pro@gmail.com>; Date: Sat, 3 Jan 2015 20:23:45 -0500; I too read the PL880 article in QST. That receiver does not cover the Air Band which the 660 does. In searching for buzzing sources, especially power line sources rich in harmonics, having an AM MODE; /archives//html/RFI/2015-01/msg00005.html (8,959 bytes)
40. Re: [RFI] RFI hunting on 160: TH-F6a? (score: 1): Author: "Frank N. Haas KB4T" <utility.rfi.pro@gmail.com>; Date: Sat, 3 Jan 2015 22:06:43 -0500; Most of the time I don't use an external antenna with the 660. Most of the time I use it as is. I use the 660 to walk around a structure while watching the signal strength meter to get an idea if (a); /archives//html/RFI/2015-01/msg00007.html (13,152 bytes)

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