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

Total 172 documents matching your query.

141. Re: [RFI] aquarium's fluorescent lamps (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Sun, 01 Jun 2014 19:14:57 +0000
Yes, very possible for them to go bad over time. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://wiki.k1ttt.net AR-Cluster node: 145.69MHz or telnet://k1ttt.net Hi, is it possible that
/archives//html/RFI/2014-06/msg00001.html (8,001 bytes)

142. Re: [RFI] Power conditioners / regenerators (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Sat, 18 Oct 2014 17:50:21 +0000
Conditioners like that are great if you also use the oxygen free super size cables, gold plated connectors on everything, and ultra-capacitors to make sure the woofers have stable enough voltage to r
/archives//html/RFI/2014-10/msg00023.html (8,403 bytes)

143. Re: [RFI] Switchers ... (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Sat, 15 Nov 2014 11:53:04 +0000
My solution... the round file. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://wiki.k1ttt.net AR-Cluster node: 145.69MHz or telnet://k1ttt.net What? Print it out and wrap it around the
/archives//html/RFI/2014-11/msg00039.html (9,099 bytes)

144. Re: [RFI] Strange Warbling (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Mon, 17 Nov 2014 14:54:27 +0000
Its got a good beat, but you couldn't dance to it. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://wiki.k1ttt.net AR-Cluster node: 145.69MHz or telnet://k1ttt.net I am helping a friend
/archives//html/RFI/2014-11/msg00042.html (7,792 bytes)

145. Re: [RFI] Heated dog water dish (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Mon, 12 Jan 2015 16:43:30 +0000
Older aquarium heaters and even older electric blankets have similar failure, or sometimes normal, operating characteristics. Oil furnace igniters can also do something similar. David Robbins K1TTT e
/archives//html/RFI/2015-01/msg00072.html (9,071 bytes)

146. Re: [RFI] RF getting into 4-port wirelss router. (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Mon, 12 Jan 2015 16:47:04 +0000
Change to a wireless lan, immediate problem will go away and you gain flexibility in moving or adding devices. You should still sort out your grounding and make sure it is up to code. David Robbins K
/archives//html/RFI/2015-01/msg00073.html (12,988 bytes)

147. Re: [RFI] Ham App for 3-Phase Power Line Filter? (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Sat, 07 Feb 2015 18:57:45 +0000
Well, if you were getting noise from a 3 phase piece of equipment somewhere you could put one of those on it to keep it from sending noise out on it's power line. Attenuation curves look reasonable w
/archives//html/RFI/2015-02/msg00028.html (8,172 bytes)

148. Re: [RFI] Successful RFI hunt (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Sun, 08 Feb 2015 12:04:32 +0000
Yep, its amazing how loud some of those laptop supplies can be. had a guest op bring one here one weekend, it was a replacement unit bought on-line somewhere. It spewed across quite a few bands. Davi
/archives//html/RFI/2015-02/msg00040.html (9,648 bytes)

149. Re: [RFI] Resolving RFI to a DSL Modem (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Sat, 21 Mar 2015 19:15:12 +0000
The first adsl modem/router I had was real sensitive to 40m also, had to build a custom filter for the phone line for it to keep it running... ferrites on all the wires didn't help. The one I have no
/archives//html/RFI/2015-03/msg00027.html (10,498 bytes)

150. Re: [RFI] Anyone ID the cause of this rain-initiated RFI? (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Thu, 02 Apr 2015 21:21:11 +0000
Probably an insulator arcing... though it could be anything electrical that got some water in it. track it quick because it may go away as soon as it dries out, then will be back next time it rains.
/archives//html/RFI/2015-04/msg00001.html (8,395 bytes)

151. Re: [RFI] An interesting RFI "noise" on 40 meters (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Thu, 23 Apr 2015 23:24:17 +0000
Exact sound is probably not all that useful... but the characteristics may help you narrow it down when you go DF it... something on and off for 30 seconds at a time... unstable... 12khz spacing. The
/archives//html/RFI/2015-04/msg00009.html (9,085 bytes)

152. Re: [RFI] Test (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Sat, 02 May 2015 10:38:10 +0000
Rfi? What is that? David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://wiki.k1ttt.net AR-Cluster node: 145.69MHz or telnet://k1ttt.net Best reply so far... Pat wa4tuk ______________________
/archives//html/RFI/2015-05/msg00006.html (8,939 bytes)

153. Re: [RFI] Grounding of A Rinnai RC80HPI Tank Less Water Heater (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Sat, 09 May 2015 10:46:44 +0000
Sounds like you have some rewiring to get done to get stuff right. But that said, that is not the fix to the rfi. I also have a rinnai water heater, it took 2 chokes to fix it's noise problem, though
/archives//html/RFI/2015-05/msg00010.html (10,658 bytes)

154. [RFI] cree?? (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Tue, 14 Jul 2015 22:03:31 +0000
Has anyone done any definitive tests on a Cree LED bulb, in particular the 65w br30 flood style? Wasn't planning on it but picked up one today and ran through 1-30mhz with an sdr-iq with a wire anten
/archives//html/RFI/2015-07/msg00030.html (6,693 bytes)

155. Re: [RFI] LED lighting (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Sun, 26 Jul 2015 15:36:55 +0000
They could just be led bulbs in a standard 120v socket also... in those there is a switching supply in the base of each bulb. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://wiki.k1ttt.
/archives//html/RFI/2015-07/msg00063.html (8,152 bytes)

156. Re: [RFI] LED lighting (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Mon, 27 Jul 2015 23:18:24 +0000
Fortunately very few street lights around here, but the ones that are around are metal arms bolted to wood poles. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://wiki.k1ttt.net AR-Clust
/archives//html/RFI/2015-07/msg00090.html (15,905 bytes)

157. Re: [RFI] Strange RFI (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Sun, 30 Aug 2015 19:57:03 +0000
Well, at least its not turning it off... that would be more annoying if someone was trying to watch it. wrap the power and signal cords on some ferrites and it will probably be ok. David Robbins K1TT
/archives//html/RFI/2015-08/msg00097.html (8,959 bytes)

158. [RFI] wide band 40m stuff?? (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Sat, 05 Sep 2015 21:51:47 +0000
New junk this afternoon I think. wide band 7055 to about 7068, looks like sub carriers ever 50hz. From the north east. Started maybe after 21z, is strong here at 2150z. ______________________________
/archives//html/RFI/2015-09/msg00011.html (6,759 bytes)

159. Re: [RFI] New bulb? Acandescence in Finallly bulb (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Sun, 20 Sep 2015 10:45:23 +0000
Since your room is not shielded and the power not filtered you should measure a real incandescent bulb at the same distance. It is possible you are just measuring conducted noise from other equipment
/archives//html/RFI/2015-09/msg00028.html (9,508 bytes)

160. Re: [RFI] Chasing RFI (score: 1)
Author: "David Robbins" <k1ttt@arrl.net>
Date: Sun, 18 Oct 2015 19:05:59 +0000
Keep doing what you were doing, but expand the search area until you can get it on vhf. If its s9 across all of hf it must go higher also. does w2irt have anything rotate able on 10m or higher to see
/archives//html/RFI/2015-10/msg00040.html (9,380 bytes)

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