Search String: Display: Description: Sort:

Results:

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

Total 172 documents matching your query.

61. Re: [RFI] Big Farad versus Hybrid Caps? (score: 1)
Author: "K1TTT" <K1TTT@ARRL.NET>
Date: Sat, 20 Jun 2009 10:25:45 +0000
Yeah, but they have built in meters, chrome, and BLUE LED's!!!! 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/2009-06/msg00053.html (8,548 bytes)

62. Re: [RFI] Looking for ideas about yet another noise source (score: 1)
Author: "K1TTT" <K1TTT@ARRL.NET>
Date: Mon, 13 Jul 2009 22:54:52 +0000
Those Doppler shift antennas won't work on noise. They require a carrier, preferably unmodulated, to detect the Doppler shift on while they rotate the array. David Robbins K1TTT e-mail: mailto:k1ttt@
/archives//html/RFI/2009-07/msg00008.html (15,869 bytes)

63. Re: [RFI] Looking for ideas about yet another noise source (score: 1)
Author: "K1TTT" <K1TTT@ARRL.NET>
Date: Tue, 14 Jul 2009 21:02:39 +0000
Which one?? old rdf stuff used a loop or ferrite antenna to find a null in strength, Doppler df uses electronically rotated vertical array to generate a synthetic doppler shift and determine directio
/archives//html/RFI/2009-07/msg00010.html (19,065 bytes)

64. Re: [RFI] HV Transmission Line (score: 1)
Author: "K1TTT" <K1TTT@ARRL.NET>
Date: Tue, 13 Oct 2009 22:36:02 +0000
On hv lines that have glass or porcelain suspension type insulators with individual disks ( strings of things that look like these: http://www.berkshireinsulatorgallery.org/catalog_porc_brown.html).
/archives//html/RFI/2009-10/msg00028.html (12,311 bytes)

65. [RFI] hdtv recommendations (score: 1)
Author: "K1TTT" <K1TTT@ARRL.NET>
Date: Mon, 11 Jan 2010 23:07:12 +0000
Ok, all you experts. I NEED an hdtv now... but I need a bright one that won't wash out in my living room during the day if possible. Those of you who have been here and seen my regular crt based tv d
/archives//html/RFI/2010-01/msg00027.html (7,640 bytes)

66. Re: [RFI] hdtv recommendations... and the winner is... (score: 1)
Author: "K1TTT" <K1TTT@ARRL.NET>
Date: Thu, 14 Jan 2010 00:29:25 +0000
Thanks for all the suggestions. After considering them and checking a few reviews I went with the Samsung un55b8500xf. The local BestBuy isn't big enough to stock that one so it will be delivered nex
/archives//html/RFI/2010-01/msg00049.html (8,270 bytes)

67. Re: [RFI] Working with the Power Company (was: Privileged treatment) (score: 1)
Author: "K1TTT" <K1TTT@ARRL.NET>
Date: Fri, 12 Feb 2010 01:54:34 +0000
Some misc notes on how to deal with customer service people in general and rfi problems. When dealing with customer service centers don't be afraid to: 1. ask for the supervisor 2. ask the supervisor
/archives//html/RFI/2010-02/msg00048.html (12,714 bytes)

68. Re: [RFI] Snow and Power Lines (score: 1)
Author: "K1TTT" <K1TTT@ARRL.NET>
Date: Tue, 16 Feb 2010 22:07:11 +0000
That is not normal, go hunting. 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/2010-02/msg00081.html (8,646 bytes)

69. Re: [RFI] Snow and Power Lines (score: 1)
Author: "K1TTT" <K1TTT@ARRL.NET>
Date: Tue, 16 Feb 2010 22:46:23 +0000
This area is about as rural as it gets, and no, it still isn't normal. Most likely cause of interference around rain/snow is moisture bridging gaps between cracks or other flaws in insulators. Until
/archives//html/RFI/2010-02/msg00083.html (9,766 bytes)

70. Re: [RFI] Power Line Noise (score: 1)
Author: "K1TTT" <K1TTT@ARRL.NET>
Date: Thu, 25 Feb 2010 22:33:35 +0000
Write down the numbers on the pole, the street address it is nearest to, and the nearest cross street/intersection, then call the electric utility company for the area. David Robbins K1TTT e-mail: ma
/archives//html/RFI/2010-02/msg00113.html (11,801 bytes)

71. Re: [RFI] Handheld Rx for Topband (score: 1)
Author: "K1TTT" <K1TTT@ARRL.NET>
Date: Fri, 12 Mar 2010 14:43:40 +0000
The little Grundig G5 is good for that. Does am/fm/sw and has dsb with a bfo, so its not real good for ssb unless the band is fairly wide open, though it does have a 'narrow' filter setting. There ar
/archives//html/RFI/2010-03/msg00037.html (8,743 bytes)

72. Re: [RFI] 40M RFI from Ooma VOIP phone hub - HELP! (score: 1)
Author: "K1TTT" <K1TTT@ARRL.NET>
Date: Fri, 26 Mar 2010 10:59:30 +0000
Someone in production probably cut costs by removing all those 'unnecessary' filter caps that engineering put on to get it past fcc acceptance tests... assuming they were actually tested properly. Re
/archives//html/RFI/2010-03/msg00095.html (10,594 bytes)

73. Re: [RFI] RFI On Talking Thermometer (score: 1)
Author: "K1TTT" <K1TTT@ARRL.NET>
Date: Fri, 26 Mar 2010 16:45:47 +0000
Is it battery powered or does it have a wall wart or direct wall plug? Which bands seem to be worse? I would try ferrites with as many turns as possible on every wire into it first. Remember, a singl
/archives//html/RFI/2010-03/msg00098.html (6,937 bytes)

74. [RFI] warning on led bulb (score: 1)
Author: "K1TTT" <K1TTT@ARRL.NET>
Date: Fri, 02 Jul 2010 19:52:24 +0000
I just tracked down a new birdie on 160m to an LED spotlight replacement bulb I picked up in Dayton. It is similar to the middle one at: http://pyfled.en.alibaba.com/product/287935493-209612596/3W_hi
/archives//html/RFI/2010-07/msg00000.html (6,721 bytes)

75. Re: [RFI] warning on led bulb (score: 1)
Author: "K1TTT" <K1TTT@ARRL.NET>
Date: Sat, 03 Jul 2010 19:47:12 +0000
Yeah I might... but do I really want to modify the track fixture to try to filter a bulb that shouldn't make noise in the first place? My intent was to warn others that some of these led bulbs may be
/archives//html/RFI/2010-07/msg00002.html (8,190 bytes)

76. Re: [RFI] HomePlug Experience? (score: 1)
Author: "K1TTT" <K1TTT@ARRL.NET>
Date: Fri, 16 Jul 2010 11:29:20 +0000
I was afraid of that also when I put in a pv system. The pv inverters talk to a monitoring box using 144khz plc which is very narrow band and no problem. But because of the limited range the monitori
/archives//html/RFI/2010-07/msg00010.html (9,286 bytes)

77. Re: [RFI] Tower Intermod - Control Lines (score: 1)
Author: "K1TTT" <K1TTT@ARRL.NET>
Date: Thu, 22 Jul 2010 23:26:14 +0000
And DON'T rule out something in the shack! I ran up and down 3 towers here chasing one, putting ferrites and bypass caps on rotor lines and grounding shells of hardline connectors... The noise was al
/archives//html/RFI/2010-07/msg00020.html (9,462 bytes)

78. Re: [RFI] Bad QRN on HF (score: 1)
Author: "K1TTT" <K1TTT@ARRL.NET>
Date: Sun, 15 Aug 2010 10:43:11 +0000
Sounds like thunderstorms to me... tis the season. 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/2010-08/msg00018.html (8,638 bytes)

79. Re: [RFI] HomePlug Experience? (score: 1)
Author: "K1TTT" <K1TTT@ARRL.NET>
Date: Thu, 07 Oct 2010 22:45:47 +0000
The ones I have are PlugLink 9650 which they say tops at 85mbps. I don't hear anything from it on the ham bands. I am hoping to get rid of them anyway, the only reason for them is that the range of t
/archives//html/RFI/2010-10/msg00016.html (13,529 bytes)

80. Re: [RFI] GFCI (score: 1)
Author: "K1TTT" <K1TTT@ARRL.NET>
Date: Sun, 17 Oct 2010 14:38:03 +0000
I would try swapping it with one that doesn't make the noise and see if the noise follows it. otherwise maybe some ferrites on the romex would reduce the level enough. Or even plug in a power strip w
/archives//html/RFI/2010-10/msg00045.html (8,672 bytes)

Current List: 61 - 80
Page: [1] [2] [3] [4] [5] [6] [7] [8] [9]
This search system is powered by Namazu