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References: [ +from:k1ttt@arrl.net: 172 ]

Total 172 documents matching your query.

161. Re: [RFI] 160M RFI - 4 khz combs- (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Sat, 19 Dec 2015 20:11:44 +0000
Just a wild guess, but I would suspect some kind of power line communications device. Perhaps it is seeing your activity as either a signal from one of it's own devices or as interference so it start
/archives//html/RFI/2015-12/msg00076.html (10,374 bytes)

162. Re: [RFI] HF Handy Talkie for RFI Detection? (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Sat, 06 Feb 2016 15:38:39 +0000
For tracking on foot I use a Grundig G5. Its reasonable sensitive even with its built in antennas, and has a jack for an external antenna. The internal antenna has a nice null so you can just swing i
/archives//html/RFI/2016-02/msg00042.html (9,579 bytes)

163. [RFI] treadmill noise (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Fri, 26 Feb 2016 18:35:26 +0000
When turning on for the 160m contest I had strong stable noise spikes every 15khz across 160m. Checked everything in the house then went for a walk with my grundig g5. It was much stronger at the pow
/archives//html/RFI/2016-02/msg00129.html (7,902 bytes)

164. [RFI] just for fun (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Sat, 05 Mar 2016 12:37:28 +0000
Ever wonder what was inside a LED bulb??? http://wiki.k1ttt.net/LED%20Bulb%20deconstruction.ashx?NoRedirect=1 _______________________________________________ RFI mailing list RFI@contesting.com http:
/archives//html/RFI/2016-03/msg00001.html (6,772 bytes)

165. Re: [RFI] House Ground (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Tue, 15 Mar 2016 22:03:41 +0000
No, a connection to the earth is only really required for power service safety. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://wiki.k1ttt.net AR-Cluster node: 145.69MHz or telnet://k1t
/archives//html/RFI/2016-03/msg00044.html (8,053 bytes)

166. Re: [RFI] RFI via Florescent Lights (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Fri, 08 Apr 2016 11:34:18 +0000
Not ones that make RFI!! And don't let my neighbors hear about them either! David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://wiki.k1ttt.net AR-Cluster node: 145.69MHz or telnet://k1ttt.n
/archives//html/RFI/2016-04/msg00015.html (11,118 bytes)

167. Re: [RFI] Broadband RFI... (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Tue, 31 May 2016 16:34:03 +0000
The output of any switching supply like that goes down in power as it goes up in frequency... that may be offset by the wires attached to it becoming more efficient antennas so it can be hard to pred
/archives//html/RFI/2016-05/msg00086.html (10,530 bytes)

168. Re: [RFI] 15 M Noise follow up (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Sat, 04 Jun 2016 10:36:11 +0000
There are 2 ways to handle the return of the noise... Try to scare them with the FCC card, or just buy them a new fixture or two (and be sure to trade them the new fixtures for the old ones!) David R
/archives//html/RFI/2016-06/msg00022.html (7,750 bytes)

169. Re: [RFI] Flourescent lighting (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Sat, 30 Jul 2016 18:00:55 +0000
One thing that may help motivate them is to point out that a ballast that has started making radio noise is probably failing and may melt down completely at some point. It may also be good to suggest
/archives//html/RFI/2016-07/msg00090.html (9,789 bytes)

170. Re: [RFI] Portable DFing at HF (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Sun, 14 Aug 2016 10:48:16 +0000
I agree, its always best to approach the person, unless maybe they have a 10' fence with barbed wire on it and a nasty dog inside, of course. An important foot-in-the-door tactic is the warning that
/archives//html/RFI/2016-08/msg00107.html (13,136 bytes)

171. Re: [RFI] Frequency Shifting RFI (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Fri, 26 Aug 2016 19:11:06 +0000
That is likely a harmonic of a switching supply that is relatively unregulated, as the line voltage changes the frequency of the switching changes. I can't tell the frequency range you are monitoring
/archives//html/RFI/2016-08/msg00161.html (8,534 bytes)

172. [RFI] led bulbs? (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Thu, 29 Sep 2016 11:46:26 +0000
Was there someone who made a list of quiet led bulbs?? I finally used the last 100w incandescent I had stockpiled so I guess its time to start switching over. ________________________________________
/archives//html/RFI/2016-09/msg00110.html (6,808 bytes)

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