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References: [ +from:k1ttt@verizon.net: 111 ]

Total 111 documents matching your query.

61. Re: [RFI] can a tower re-radiate RFI? (score: 1)
Author: David Robbins <k1ttt@verizon.net>
Date: Mon, 25 Jan 2016 07:14:08 -0600 (CST)
DANGER WILL ROBINSON!!! that could be a very dangerous situation... get a qualified electrician and the power company there ASAP and get everything checked out. I had a neighbor who went through that
/archives//html/RFI/2016-01/msg00064.html (10,708 bytes)

62. Re: [RFI] can a tower re-radiate RFI? (score: 1)
Author: David Robbins <k1ttt@verizon.net>
Date: Mon, 11 Apr 2016 10:27:32 -0500 (CDT)
Hmmm, talk about timing... where I work we just got a delivery of fluorescent bulb recycling boxes... if you are interested go to: http://www.ezontheearth.com/ for more info if you can't find a colle
/archives//html/RFI/2016-04/msg00038.html (7,157 bytes)

63. [RFI] Recycling fluorescent tubes (score: 1)
Author: David Robbins <k1ttt@verizon.net>
Date: Mon, 11 Apr 2016 10:31:46 -0500 (CDT)
lets give this a proper subject... Hmmm, talk about timing... where I work we just got a delivery of fluorescent bulb recycling boxes... if you are interested go to: http://www.ezontheearth.com/ for
/archives//html/RFI/2016-04/msg00039.html (6,729 bytes)

64. Re: [RFI] Electric Fence pulsing - minor success today ! (score: 1)
Author: David Robbins <k1ttt@verizon.net>
Date: Tue, 03 May 2016 13:51:31 -0500 (CDT)
one way that may help is to show him the spark jump to the tree and point out that what is jumping that gap is being drained from the fence making it less effective at what he wants, zapping the crit
/archives//html/RFI/2016-05/msg00004.html (8,207 bytes)

65. Re: [RFI] Broadband RFI... (score: 1)
Author: David Robbins <k1ttt@verizon.net>
Date: Tue, 31 May 2016 08:33:58 -0500 (CDT)
the only difference in hunting a broadband noise is that you have to be sure that when you go from your shack to mobile that you are hearing the same noise and aren't being distracted by a different
/archives//html/RFI/2016-05/msg00082.html (10,194 bytes)

66. [RFI] test (score: 1)
Author: "David Robbins" <k1ttt@verizon.net>
Date: Tue, 01 Nov 2016 19:40:35 +0000
Verizon is forcing everyone to use their Verizon.net domain as your 'from' address, need to see which lists will need to be changed. _______________________________________________ RFI mailing list R
/archives//html/RFI/2016-11/msg00001.html (6,809 bytes)

67. [RFI] led bulb test (score: 1)
Author: "David Robbins" <k1ttt@verizon.net>
Date: Wed, 09 Nov 2016 17:22:33 +0000
Bought a relatively expensive single 100w replacement GE LED bulb today just to try a new one out after my disappointment years ago with an early product that trashed everything. The part numbers and
/archives//html/RFI/2016-11/msg00012.html (8,212 bytes)

68. Re: [RFI] led bulb test (score: 1)
Author: "David Robbins" <k1ttt@verizon.net>
Date: Wed, 09 Nov 2016 18:25:03 +0000
I just ordered two 6-packs of 60w LED bulbs on a special deal from the power companies, $10/6-pack. I'll test them the same way when they get here. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net w
/archives//html/RFI/2016-11/msg00014.html (11,255 bytes)

69. Re: [RFI] led bulb test (score: 1)
Author: "David Robbins" <k1ttt@verizon.net>
Date: Thu, 10 Nov 2016 11:53:08 +0000
These tracks are fairly old and the aluminum outside shell of the track is not bonded to the green. The plugs are only 2 prong. These hang from a drop ceiling and just plug into outlets above the cei
/archives//html/RFI/2016-11/msg00019.html (11,263 bytes)

70. Re: [RFI] Unusual subharmonic RFI (score: 1)
Author: "David Robbins" <k1ttt@verizon.net>
Date: Fri, 11 Nov 2016 21:53:37 +0000
Been there, done that a couple times. It is surprisingly easy to generate subharmonics. All it takes is a resonant length of conductor with a non-linear junction at one end. http://wiki.k1ttt.net/200
/archives//html/RFI/2016-11/msg00026.html (10,392 bytes)

71. Re: [RFI] Mobile K3s/P3 RX only? (score: 1)
Author: "David Robbins" <k1ttt@verizon.net>
Date: Mon, 26 Dec 2016 00:02:01 +0000
I agree with staying isolated from the vehicle electrical system. I have used a laptop and SDR-IQ with a small loop with good success. In the car I can also plug the sdr-iq into my hustler mobile mou
/archives//html/RFI/2016-12/msg00090.html (9,250 bytes)

72. Re: [RFI] A note from Sangean about switching power supplies (score: 1)
Author: "David Robbins" <k1ttt@verizon.net>
Date: Sat, 07 Jan 2017 14:18:59 +0000
It is interesting that they warn you about that... but a company making a radio should at least try to choose a wart that is quiet. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://wiki.
/archives//html/RFI/2017-01/msg00010.html (9,117 bytes)

73. [RFI] in the shack rfi found! (score: 1)
Author: "David Robbins" <k1ttt@verizon.net>
Date: Mon, 16 Jan 2017 20:59:53 +0000
This is a relatively odd case of noise from switching mode wall warts that had passed all my initial tests, that is they didn't make hash that I could pick up, until.. I had been plagued with some in
/archives//html/RFI/2017-01/msg00042.html (9,508 bytes)

74. Re: [RFI] RFI turn out to be a New Solar Panel installed on Roof of Garage 700 feet away from my QTH (score: 1)
Author: "David Robbins" <k1ttt@verizon.net>
Date: Wed, 01 Mar 2017 12:37:12 +0000
If I had to guess you have two or more problems, or have misidentified one of them. Solar arrays normally make noise only when the sun is on them. An exception to this would be panels that charge bat
/archives//html/RFI/2017-03/msg00001.html (11,631 bytes)

75. Re: [RFI] Solar Panel RFI (score: 1)
Author: "David Robbins" <k1ttt@verizon.net>
Date: Fri, 17 Mar 2017 19:18:43 +0000
On my system the 'optimizers' are built into micro inverters on the back of each panel. I hunted for noise on all hf bands and could only find a little bit on 10m when aimed straight at the panels, a
/archives//html/RFI/2017-03/msg00048.html (8,652 bytes)

76. Re: [RFI] More on 160 M RFI - significance of hum bands (score: 1)
Author: "David Robbins" <k1ttt@verizon.net>
Date: Thu, 30 Mar 2017 11:21:00 +0000
Other things that may help identify sources... if the bars in waterfall shift when the line voltage changes it is likely a poorly regulated device like a charger, wall wart, pc power supply, motor co
/archives//html/RFI/2017-03/msg00102.html (11,214 bytes)

77. Re: [RFI] Lightning Grounds with Insulators in SC? (score: 1)
Author: "David Robbins" <k1ttt@verizon.net>
Date: Sun, 09 Apr 2017 17:58:36 +0000
The shield wires above the power conductors on high voltage lines can be insulated from the pole or be broken up with a small insulator to reduce circulating currents induced in them from the magneti
/archives//html/RFI/2017-04/msg00001.html (8,833 bytes)

78. Re: [RFI] "New" RFI - solution? (score: 1)
Author: "David Robbins" <k1ttt@verizon.net>
Date: Wed, 03 May 2017 15:59:19 -0500
Has there been any recent rain or even fog or heavy dew?? Moisture on insulators that are dirty can cause lots of noise which will go away either when it rains hard enough to wet the whole insulator
/archives//html/RFI/2017-05/msg00016.html (9,929 bytes)

79. Re: [RFI] white noise starting at 3780 and up (score: 1)
Author: "David Robbins" <k1ttt@verizon.net>
Date: Sun, 16 Jul 2017 09:52:48 -0500
And complaining to AT&T about something that might be their problem and that their techs have no idea how to find or fix won't help. If you think it is your modem just unplug it from both the power a
/archives//html/RFI/2017-07/msg00030.html (9,325 bytes)

80. Re: [RFI] Is this a new RFI problem goTenna Pro (or intruder) (score: 1)
Author: "David Robbins" <k1ttt@verizon.net>
Date: Thu, 27 Jul 2017 06:46:16 -0500
Hmmmm, I found a spot where it says it is approved under part 95?!?!? Page: https://www.gotenna.com/pages/faqs-about-gotenna under How It Works/Is goTenna approved by the FCC David Robbins K1TTT e-ma
/archives//html/RFI/2017-07/msg00055.html (8,984 bytes)

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