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References: [ +from:ingraham.ma.ultranet@rcn.com: 94 ]

Total 94 documents matching your query.

61. Re: [RFI] Power Line Noise Conundrum (score: 1)
Author: Andy <ingraham.ma.ultranet@rcn.com>
Date: Mon, 11 Oct 2010 10:53:41 -0400
Ken, My understanding is that the nulls of a beam antenna are not particularly dependable. Most beams were designed for gain, not a rock steady null off the back and/or sides. They can move around, d
/archives//html/RFI/2010-10/msg00030.html (8,538 bytes)

62. Re: [RFI] Power Line RFI... Solved (I think) (score: 1)
Author: Andy <ingraham.ma.ultranet@rcn.com>
Date: Wed, 13 Oct 2010 10:47:09 -0400
That's good that you found something concrete. It is possible that it was the switch contacts. I think there are many other possibilities too. For example, since you interrupted power momentarily, ma
/archives//html/RFI/2010-10/msg00037.html (7,188 bytes)

63. Re: [RFI] Ladder Line and RFI/Noise (score: 1)
Author: Andy <ingraham.ma.ultranet@rcn.com>
Date: Tue, 19 Oct 2010 15:27:30 -0400
It would seem, then, that twisting one's ladderline might help. It might not fix the problem, but it should help, except for tight spots where you need to run past something for only a few inches (l
/archives//html/RFI/2010-10/msg00063.html (8,997 bytes)

64. Re: [RFI] Ladder Line and RFI/Noise (score: 1)
Author: Andy <ingraham.ma.ultranet@rcn.com>
Date: Tue, 19 Oct 2010 16:13:14 -0400
Good point. I keep forgetting that. I have also seen several references (for much longer than a decade) saying that TV twinlead also gets lossy when wet. So it is apparently not unique to window lad
/archives//html/RFI/2010-10/msg00065.html (9,086 bytes)

65. Re: [RFI] Bulb rumors. (score: 1)
Author: Andy <ingraham.ma.ultranet@rcn.com>
Date: Mon, 29 Nov 2010 18:16:19 -0500
My experience with CFLs is quite different from yours. (I have no experience with LED replacements.) Not here, so far. Not that I've seen. (Yes, I can detect a very slight hum from CFLs, and from man
/archives//html/RFI/2010-11/msg00120.html (9,439 bytes)

66. Re: [RFI] Sylvaniai LED bulb interference (score: 1)
Author: Andy <ingraham.ma.ultranet@rcn.com>
Date: Tue, 30 Nov 2010 11:05:59 -0500
But where is the Common Mode current going? One would think there wouldn't be any, since what goes into the lamp and can't go any further! If there is coupling from the lamp to something else, that'
/archives//html/RFI/2010-11/msg00136.html (8,494 bytes)

67. Re: [RFI] CFL Bulbs that are OK! (score: 1)
Author: Andy <ingraham.ma.ultranet@rcn.com>
Date: Thu, 2 Dec 2010 09:33:02 -0500
I grew up (well, since high school) being taught that fluorescents shouldn't be cycled on and off, that it actually uses more electricity than keeping them on longer, and it shortens their life. But
/archives//html/RFI/2010-12/msg00000.html (9,078 bytes)

68. Re: [RFI] CFL Bulbs that are OK! (score: 1)
Author: Andy <ingraham.ma.ultranet@rcn.com>
Date: Fri, 3 Dec 2010 00:05:09 -0500
I wasn't aware of that. I might not assume they will go that way (though they may). Market forces will do what they do, having a mind of their own, and it all depends on how well the LEDs fare. If f
/archives//html/RFI/2010-12/msg00013.html (9,487 bytes)

69. Re: [RFI] CFL Bulbs that are OK! (score: 1)
Author: Andy <ingraham.ma.ultranet@rcn.com>
Date: Thu, 2 Dec 2010 23:50:26 -0500
That's interesting. Recently (a year or two ago?) I put CFLs in a half bath, two over the mirror and one in the ceiling fixture. All of them are inverted. The ones over the mirror were too bright (n
/archives//html/RFI/2010-12/msg00015.html (9,531 bytes)

70. Re: [RFI] CFL Bulbs that are OK! (score: 1)
Author: Andy <ingraham.ma.ultranet@rcn.com>
Date: Fri, 3 Dec 2010 18:27:57 -0500
Yeah, that's what I thought the problem was. But some years later someone told me the real danger was mercury. But I don't take that person's opinion as very authoritative. Heck, we used to play wit
/archives//html/RFI/2010-12/msg00029.html (9,700 bytes)

71. Re: [RFI] CFL Bulbs that are OK! (score: 1)
Author: Andy <ingraham.ma.ultranet@rcn.com>
Date: Fri, 3 Dec 2010 18:29:45 -0500
What's there to keep track of?? Like you say, it's all over the place. Andy _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/li
/archives//html/RFI/2010-12/msg00030.html (9,961 bytes)

72. Re: [RFI] CFL Bulbs that are OK! (score: 1)
Author: Andy <ingraham.ma.ultranet@rcn.com>
Date: Fri, 3 Dec 2010 18:58:19 -0500
The packaging says so, at least on some brands. Vertical, base down. ODDLY ENOUGH ... On the bulbs I purchased most recently (Osram Sylvania 7 watt), it says only this: "Light output has more than 5
/archives//html/RFI/2010-12/msg00034.html (10,916 bytes)

73. Re: [RFI] CFL Bulbs that are OK! (score: 1)
Author: Andy <ingraham.ma.ultranet@rcn.com>
Date: Fri, 3 Dec 2010 19:19:49 -0500
Me too!!! The extreme range between people's experiences here, has me baffled. I can believe that the RFI depends on brand, maybe even despite the fact that they are all imported from the same count
/archives//html/RFI/2010-12/msg00035.html (10,644 bytes)

74. Re: [RFI] CFL Bulbs that are OK! PLEASE STOP!!!! (score: 1)
Author: Andy <ingraham.ma.ultranet@rcn.com>
Date: Mon, 6 Dec 2010 11:50:01 -0500
I like it! Does someone know of a good email discussion group that is only about CFLs? Or perhaps someone should start one. Then we could nudge (note I said nudge, not kick) people in that direction
/archives//html/RFI/2010-12/msg00051.html (10,538 bytes)

75. Re: [RFI] RFI every 34KHz? (score: 1)
Author: Andy <ingraham.ma.ultranet@rcn.com>
Date: Sat, 22 Jan 2011 17:22:19 -0500
Anything with a switching power supply in it could do that. Andy _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo/rfi
/archives//html/RFI/2011-01/msg00179.html (6,522 bytes)

76. Re: [RFI] Actually an AFI Question ... (score: 1)
Author: Andy <ingraham.ma.ultranet@rcn.com>
Date: Thu, 3 Feb 2011 17:43:14 -0500
David Clark, Bose, and others make noise canceling headphones, so yes, something like that is possible. David Clark is well known by airplane pilots. And I've seen (but not read) papers about reducin
/archives//html/RFI/2011-02/msg00026.html (7,444 bytes)

77. Re: [RFI] CFL Failure, screenshots, recording. (score: 1)
Author: Andy <ingraham.ma.ultranet@rcn.com>
Date: Fri, 4 Feb 2011 00:01:11 -0500
I had a CFL fail two weeks ago. I dropped it, stupid me. Shattered all over. I debated calling in the EPA to do the toxic (Hg) clean-up. But I am interested in your results ... even though I'm one o
/archives//html/RFI/2011-02/msg00031.html (7,668 bytes)

78. Re: [RFI] RFI U-verse (score: 1)
Author: Andy <ingraham.ma.ultranet@rcn.com>
Date: Sat, 26 Feb 2011 22:20:49 -0500
More toroids? Or a different ferrite material. At lower frequencies one toroid may not give enough impedance. Andy _______________________________________________ RFI mailing list RFI@contesting.com
/archives//html/RFI/2011-02/msg00102.html (7,015 bytes)

79. Re: [RFI] RFI U-verse (score: 1)
Author: Andy <ingraham.ma.ultranet@rcn.com>
Date: Sun, 27 Feb 2011 17:31:01 -0500
Really?! If that is indeed the case, it is very telling, and it probably indicates why you are having a problem in the first place. In short, adding a common-mode choke to a differential signal shou
/archives//html/RFI/2011-02/msg00119.html (8,732 bytes)

80. Re: [RFI] RFI U-verse (score: 1)
Author: Andy <ingraham.ma.ultranet@rcn.com>
Date: Sun, 27 Feb 2011 17:33:22 -0500
Oops, I didn't realize you (W2TTT) weren't the one with the interference problem. Andy _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/
/archives//html/RFI/2011-02/msg00120.html (7,909 bytes)

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