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References: [ +from:K1TTT@ARRL.NET: 172 ]

Total 172 documents matching your query.

21. Re: [RFI] Monitor RFI (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Mon, 2 Jan 2006 11:58:32 -0000
Again the question... what noise problem? I have 10 lcd monitors from 3 manufacturers in this room all running at once during hf and vhf contests with no noise attributed to them. And I am in such a
/archives//html/RFI/2006-01/msg00009.html (10,100 bytes)

22. Re: [RFI] lighting rfi (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Mon, 2 Jan 2006 13:26:15 -0000
Tell him the story of the ham who saved a neighbor's house from burning down when he traced a noise to a doorbell transformer with an arcing connection. Or point out that old lights going bad are usi
/archives//html/RFI/2006-01/msg00011.html (10,711 bytes)

23. Re: [RFI] Monitor RFI (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Mon, 2 Jan 2006 20:03:01 -0000
This is probably a misleading test. When holding an ht against the screen of an lcd monitor you are probably only 1/4-1/2" from the active electronics. With a crt you could be a 10-12" or more for a
/archives//html/RFI/2006-01/msg00013.html (9,173 bytes)

24. [RFI] bpl seminar (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Fri, 27 Jan 2006 19:18:52 -0000
Want to learn more about BPL? Here is a good chance in Western Massachusetts. Includes presentation by Ed Hare of the ARRL. IEEE Berkshire Section Power Chapter Presents Seminar on Broadband Over Pow
/archives//html/RFI/2006-01/msg00113.html (8,603 bytes)

25. Re: [RFI] UPS interference/Recommendation Request (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Fri, 28 Apr 2006 19:14:43 -0000
I have belkin, apc, and tripp-lite here and they all seem fine. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://www.k1ttt.net AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net ______
/archives//html/RFI/2006-04/msg00024.html (8,837 bytes)

26. Re: [RFI] Plasma TV's to be obsolete within 2 years (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Sun, 30 Apr 2006 11:17:28 -0000
Didn't sony just announce something like a 100" diagonal plasma set? Available by Christmas this year or some such, doesn't sound like they are getting out of it. David Robbins K1TTT e-mail: mailto:k
/archives//html/RFI/2006-04/msg00030.html (9,138 bytes)

27. Re: [RFI] Nasty RF Problem. Advice Please (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Sun, 10 Sep 2006 21:09:04 -0000
How about shielding the box? You said this has an integrated antenna? That would mean that at least part of the case was transparent to rf. It wouldn't surprise me if there was little shielding in it
/archives//html/RFI/2006-09/msg00001.html (8,450 bytes)

28. Re: [RFI] RFI all over the band (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Sun, 1 Oct 2006 11:42:02 -0000
Power line noise that comes and goes with rain is likely caused by bad insulators. When the insulator is dry it is arcing and making noise, when it gets wet the water fills the gap and current flows
/archives//html/RFI/2006-10/msg00000.html (9,939 bytes)

29. Re: [RFI] [YCCC] Interference to CO Alarm (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Mon, 6 Nov 2006 21:04:25 -0000
I have found that wrapping things like that tightly in aluminum foil stops the problem. However if it is one that is wired into the house electrical system you may also need a few ferrites on the pow
/archives//html/RFI/2006-11/msg00012.html (8,700 bytes)

30. Re: [RFI] wireless power at 6.4 MHz? (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Wed, 15 Nov 2006 21:33:30 -0000
It has to radiate or no power can be transferred. From their description its either another EH antenna like scheme or an interesting theoretical piece of work with no practical application. David Rob
/archives//html/RFI/2006-11/msg00040.html (8,157 bytes)

31. Re: [RFI] wireless power at 6.4 MHz? (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Fri, 17 Nov 2006 14:31:02 -0000
Induction without a ferromagnetic material to contain the flux still results in a magnetic field in the air, and where there is a changing magnetic field there will be an electric field and therefore
/archives//html/RFI/2006-11/msg00043.html (9,066 bytes)

32. [RFI] new rfi source in house! (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Sun, 19 Nov 2006 12:04:51 -0000
Argh... this should have been safe, I thought. Friday I had a Rinnai tankless hot water heater installed, now I have pulsing qrm on several sw bands. They seem to have nicely avoided the 6 hf contest
/archives//html/RFI/2006-11/msg00051.html (7,456 bytes)

33. Re: [RFI] Humming "Telephone" Poles (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Wed, 20 Dec 2006 23:47:27 -0000
Is there any wind when this is happening? Perhaps you have a fluttering wire. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://www.k1ttt.net AR-Cluster node: 145.69MHz or telnet://dxc.k1
/archives//html/RFI/2006-12/msg00055.html (8,682 bytes)

34. Re: [RFI] Christmas Noise (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Sun, 24 Dec 2006 16:44:16 -0000
http://www.arrl.org/tis/info/HTML/rfi-noise/ David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://www.k1ttt.net AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net _________________________
/archives//html/RFI/2006-12/msg00069.html (7,783 bytes)

35. Re: [RFI] Technical Contact at DirecTV? (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Sun, 8 Apr 2007 10:14:45 -0000
What kind of problem can you be having with dtv?? I have had it here for years and no problem either way with it. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://www.k1ttt.net AR-Cluste
/archives//html/RFI/2007-04/msg00005.html (7,873 bytes)

36. Re: [RFI] High Efficience Furnaces - Tankless Water Heater (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Fri, 20 Jul 2007 10:12:19 -0000
Yes, my rinnai puts out lots of crud on the power line and control line. some ferrites on the control cable and a coiled extension cord have cut it down so it only interferes with my in the house swl
/archives//html/RFI/2007-07/msg00023.html (9,286 bytes)

37. Re: [RFI] VDSL (off topic now, but I had help) (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Sat, 01 Sep 2007 10:18:07 +0000
And when you call don't take no for an answer. The first level person will just type your phone number into the same database and give you the same answer the web site does. Ask for the supervisor an
/archives//html/RFI/2007-09/msg00000.html (9,694 bytes)

38. Re: [RFI] RFI from street lights - finding source? (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Sat, 13 Oct 2007 17:06:18 +0000
For a start tune your car's AM radio to a gap between stations and drive around. If its that strong on the low bands that should give you some indication. Check it out in the driveway by listening on
/archives//html/RFI/2007-10/msg00045.html (9,825 bytes)

39. Re: [RFI] Power Lines (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Sat, 22 Dec 2007 18:05:20 +0000
Old and new... The last DC distribution station in NYC was just retired after they installed rectifiers in the last building that it was powering. Today High voltage DC is an excellent choice for lon
/archives//html/RFI/2007-12/msg00043.html (9,805 bytes)

40. Re: [RFI] Power Lines (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Sun, 23 Dec 2007 19:23:01 +0000
If the line uses the common porcelain or glass 'bell' type insulators shaped like these: http://www.berkshireinsulatorgallery.org/catalogimages/mvc-017f.jpg or http://www.berkshireinsulatorgallery.or
/archives//html/RFI/2007-12/msg00050.html (10,442 bytes)

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