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Total 458 documents matching your query.

61. [RFI] FW: More info on 2 mtr long range phones (score: 1)
Author: EDWARDS, EDDIE J" <eedwards@oppd.com (EDWARDS, EDDIE J)
Date: Mon, 21 May 2001 10:24:13 -0500
Here's what I tried to send earlier. I want to repeat something that N7LT says at the end: Please remember, DON'T attack these businesses! It only makes them mad, and then they work harder to hide wh
/archives//html/RFI/2001-05/msg00044.html (35,600 bytes)

62. [RFI] DFing power line interference (score: 1)
Author: EDWARDS, EDDIE J" <eedwards@oppd.com (EDWARDS, EDDIE J)
Date: Fri, 5 Jan 2001 09:34:02 -0600
That's not a bad price, but I have to wonder how good it is at finding line noise. At 135MHz you could still be looking at dozens of poles as the possible source if you don't have an attenuator. Als
/archives//html/RFI/2001-01/msg00010.html (9,584 bytes)

63. [RFI] VHF-AM radios (score: 1)
Author: EDWARDS, EDDIE J" <eedwards@oppd.com (EDWARDS, EDDIE J)
Date: Tue, 23 Jan 2001 10:08:34 -0600
I have often wondered how those radios perform dual-mode rcv. I have one at home that rcvs 110-180Mhz in one band --one mode. Seems like something I should know, but have never ran across this info.
/archives//html/RFI/2001-01/msg00027.html (8,210 bytes)

64. [RFI] VHF-AM radios (score: 1)
Author: EDWARDS, EDDIE J" <eedwards@oppd.com (EDWARDS, EDDIE J)
Date: Tue, 23 Jan 2001 15:33:30 -0600
Excellent Dale! I do remember hearing about slope detection, don't remember where though. It works like a champ. I'm sure that's all we did on the old multi-band rcvrs since the frequency display was
/archives//html/RFI/2001-01/msg00029.html (12,312 bytes)

65. [RFI] Re: Radio Frequency Interference (RFI) Digest V3 #89 (score: 1)
Author: EDWARDS, EDDIE J" <eedwards@oppd.com (EDWARDS, EDDIE J)
Date: Fri, 8 Dec 2000 14:07:30 -0600
This reminds me of something I read somewhere. Sometimes it helps to use a twin-lead HP filter even on cable systems. To do this, put an 75-300 ohm impedance transformer on each side of the filter.
/archives//html/RFI/2000-12/msg00013.html (7,860 bytes)

66. [RFI] RFI Troubles - touch lamps (score: 1)
Author: EDWARDS, EDDIE J" <eedwards@oppd.com (EDWARDS, EDDIE J)
Date: Wed, 27 Dec 2000 09:01:56 -0600
By stimulate, if you mean activate or turn on & off, I've been able to do so using all modes, i.e. CW, SSB, FM, etc. But not all lamps that make noise will be easily activated by a typical ham stati
/archives//html/RFI/2000-12/msg00042.html (7,803 bytes)

67. [RFI] Flex Conduit Question (score: 1)
Author: EDWARDS, EDDIE J" <eedwards@oppd.com (EDWARDS, EDDIE J)
Date: Wed, 27 Dec 2000 15:01:39 -0600
That's a good one Larry. Never thought about flexible conduit before. I'm not familiar with the specific conduit you're talking about, but if it's like Greenfield conduit, the only possible problem I
/archives//html/RFI/2000-12/msg00046.html (9,608 bytes)

68. [RFI] Tvi Problems (score: 1)
Author: EDWARDS, EDDIE J" <eedwards@oppd.com (EDWARDS, EDDIE J)
Date: Wed, 1 Nov 2000 10:36:19 -0600
Hi Mike, In addition to the Palomar guys recommendation, I'd add to be sure to add ferrites to ALL cables into and out of the TV set. Stop the RF at all paths. Also a higher tower might help too, bu
/archives//html/RFI/2000-11/msg00000.html (10,034 bytes)

69. [RFI] Ferrite on Spark Wires (score: 1)
Author: EDWARDS, EDDIE J" <eedwards@oppd.com (EDWARDS, EDDIE J)
Date: Thu, 16 Nov 2000 11:24:22 -0600
I'm not real versed in auto noise problems, but the ARRL's RFI Handbook has a whole chapter on it. It covers ignition, alternator & generator noise, DC motors, noisey switches, microprocessors, wiri
/archives//html/RFI/2000-11/msg00014.html (7,802 bytes)

70. [RFI] Which Radio Shack phone is RFI resistant? (score: 1)
Author: EDWARDS, EDDIE J" <eedwards@oppd.com (EDWARDS, EDDIE J)
Date: Tue, 21 Nov 2000 12:41:23 -0600
Some have claimed that their $19.95 trimline phone is RFI resistant, but I rcvd RFI on it just as bad as most. The RS/K-Comm filter knocked it down low enough to not be bothersome. The only RFI-proo
/archives//html/RFI/2000-11/msg00024.html (7,489 bytes)

71. [RFI] TVI Filters (score: 1)
Author: EDWARDS, EDDIE J" <eedwards@oppd.com (EDWARDS, EDDIE J)
Date: Tue, 17 Oct 2000 08:11:12 -0500
Which type of filter are you interested in? It'll probably depend on the type of interference you are getting. TVI to the video, probably need a High pass. TVI or RFI to the audio, probably need Comm
/archives//html/RFI/2000-10/msg00017.html (7,631 bytes)

72. [RFI] HF SSB RFI on CATV Sound Only! (score: 1)
Author: EDWARDS, EDDIE J" <eedwards@oppd.com (EDWARDS, EDDIE J)
Date: Tue, 31 Oct 2000 10:23:10 -0600
He could still "watch" football with the sound turned down! Couldn't he? ;^) I doubt that will help. It's probably due to audio rectification in the audio amplifier of the TV. The audio amp's transi
/archives//html/RFI/2000-10/msg00027.html (11,025 bytes)

73. [RFI] PC Speakers (score: 1)
Author: EDWARDS, EDDIE J" <eedwards@oppd.com (EDWARDS, EDDIE J)
Date: Mon, 18 Sep 2000 10:18:56 -0500
Roger's suggestion is right on. Buy, if you don't already own, a good shielded set of speakers to take. If they pick up RF in the shack add ferrites. The trick here is which end of the speaker wire d
/archives//html/RFI/2000-09/msg00005.html (10,207 bytes)

74. [RFI] Line filter (score: 1)
Author: EDWARDS, EDDIE J" <eedwards@oppd.com (EDWARDS, EDDIE J)
Date: Fri, 29 Sep 2000 09:09:52 -0500
Filing a complaint won't do any good since the FCC probably will not enforce Part 15 which is where these Non-intentional radiators are regulated or at least supposed to be. You might find someone a
/archives//html/RFI/2000-09/msg00015.html (18,265 bytes)

75. [RFI] Grounding the Operating Position (score: 1)
Author: EDWARDS, EDDIE J" <eedwards@oppd.com (EDWARDS, EDDIE J)
Date: Fri, 29 Sep 2000 09:32:24 -0500
Hi Dave, Braid does give a large surface area for grounding, but todays comm stds are to not use braid in the grounding especially outdoors where you will get corrosion. The reason is when it starts
/archives//html/RFI/2000-09/msg00016.html (8,929 bytes)

76. [RFI] Grounding the Operating Position (score: 1)
Author: EDWARDS, EDDIE J" <eedwards@oppd.com (EDWARDS, EDDIE J)
Date: Fri, 29 Sep 2000 10:32:13 -0500
Actually, #4 AWG would be better if the run is over 8' long and #2 if over 16' long. And that's either bare OR w/green insulation. Solid or stranded is OK. Be sure to use copper rated connectors to
/archives//html/RFI/2000-09/msg00017.html (8,045 bytes)

77. [RFI] Line filter (score: 1)
Author: EDWARDS, EDDIE J" <eedwards@oppd.com (EDWARDS, EDDIE J)
Date: Fri, 29 Sep 2000 14:54:11 -0500
Regarding my earlier message, some have pointed out that I was rather negative with respect to calling the FCC. I'm not saying that you shouldn't try calling the FCC if it indeed comes to that, but i
/archives//html/RFI/2000-09/msg00019.html (9,006 bytes)

78. [RFI] 2.4 GHz Phones (score: 1)
Author: EDWARDS, EDDIE J" <eedwards@oppd.com (EDWARDS, EDDIE J)
Date: Thu, 3 Aug 2000 08:44:20 -0500
I have found drastic differences in susceptibility depending only on where a particular phone is plugged in within my house. The differences in wiring can make one phone more susceptible than others.
/archives//html/RFI/2000-08/msg00002.html (8,708 bytes)

79. [RFI] FW: TV set RFI questions (score: 1)
Author: EDWARDS, EDDIE J" <eedwards@oppd.com (EDWARDS, EDDIE J)
Date: Mon, 24 Jul 2000 09:14:18 -0500
Below is an example of why RFI is such a problem for consumers. This is a response by Panasonic to my questions about TV RFI. Even TV manufacturer's don't seem to understand the problem, or at least
/archives//html/RFI/2000-07/msg00010.html (10,604 bytes)

80. [RFI] question regarding Carrier furnace (score: 1)
Author: EDWARDS, EDDIE J" <eedwards@oppd.com (EDWARDS, EDDIE J)
Date: Thu, 27 Jul 2000 08:36:18 -0500
A rcvr will tell you if it makes noise. That is important, especially for DXers or contesters. But do you also transmit? Kinda hard to set-up, but that's the other half of the EMI problem when it co
/archives//html/RFI/2000-07/msg00018.html (8,422 bytes)


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