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Total 571 documents matching your query.

141. Re: [RFI] CFL Noise Update - Neighbor Removes Burned Out CFL (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Tue, 9 Oct 2012 17:25:20 -0700
Are your houses on a common tranformer? Changing inductance when you turn on your switch, adding possibly tens of feet of wire to the circuit, thus changing the frequency of the hash produced by the
/archives//html/RFI/2012-10/msg00023.html (7,783 bytes)

142. Re: [RFI] Start up Sound file... (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Tue, 9 Oct 2012 17:42:32 -0700
I've heard this sound in the past and seen/heard a mercury vapor lamp used as a yard light produce this sound near a friends house a few years ago. When the light finally gets "hot" enough, as far as
/archives//html/RFI/2012-10/msg00024.html (6,863 bytes)

143. Re: [RFI] CFL Noise Update - Neighbor Removes Burned Out CFL (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Wed, 10 Oct 2012 12:25:14 -0700
LC network. If the CLF is acting as a broadband RF generator, all the wiring in the house it is attached to will determine the frequency(ies). Simply plugging in an extension cord, not connected to
/archives//html/RFI/2012-10/msg00030.html (9,621 bytes)

144. Re: [RFI] RFI Audio Cuts... (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Tue, 23 Oct 2012 11:33:56 -0700
Did I send you some in the past? Your name sounds familiar. If not, I have a few, give me a bit to gather them up. Kurt _______________________________________________ RFI mailing list RFI@contesting
/archives//html/RFI/2012-10/msg00038.html (7,236 bytes)

145. Re: [RFI] Fluorescent Light RFI (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Wed, 24 Oct 2012 21:21:31 -0700
brand or the power supply, which might be switching mode now, but the 48" long arc and plasma that generates the RFI. Kurt _______________________________________________ RFI mailing list RFI@contes
/archives//html/RFI/2012-10/msg00040.html (6,909 bytes)

146. Re: [RFI] rfi problem (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Thu, 1 Nov 2012 14:06:39 -0700
changes. Don't tell them you WILL, tell the you ARE or HAVE reported it to the FCC. Cable can send a flunky out with a truck in a few minutes and verify whether or not they are responsible. If so, t
/archives//html/RFI/2012-11/msg00006.html (7,882 bytes)

147. [RFI] Not noise, but... (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Fri, 2 Nov 2012 18:36:25 -0700
"I just drove around the neighborhood listening to 1700 khz on my car's broadcast radio." For those that like to drive around listening to things on the upper end of AMBC, try monitoring 1710 KHz for
/archives//html/RFI/2012-11/msg00013.html (6,654 bytes)

148. Re: [RFI] RFI to new photoelectric smoke detector (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Tue, 6 Nov 2012 09:58:24 -0800
Then shield the exterior... Sounds like a job for aluminum foil, scotch tape and a hole punch. Kurt _______________________________________________ RFI mailing list RFI@contesting.com http://lists.co
/archives//html/RFI/2012-11/msg00023.html (7,894 bytes)

149. Re: [RFI] Mains filter for test bench (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Tue, 6 Nov 2012 18:07:27 -0800
Get an RFI filter from an old computer/printer/fax/laser copier power supply. It will have the very common IEC-6 plug on the mains side and either solder tabs, screw on lugs or spade connectors on t
/archives//html/RFI/2012-11/msg00026.html (7,555 bytes)

150. Re: [RFI] Signal on 433.875 (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Fri, 16 Nov 2012 23:21:19 -0800
Thats in an ISDM, Industrial Scientific Data and Medical, band. The number of devices you will hear around there is in the millions. A few of the most common frequencies are 433.925, 434.000 and 434
/archives//html/RFI/2012-11/msg00041.html (7,484 bytes)

151. Re: [RFI] Signal on 433.875 (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Sun, 18 Nov 2012 19:11:53 -0800
Yes, but that would be "Ham" application, and not relevant to RFI. Hearing a Ham on a Ham Radio in the Ham band doing Ham stuff is no biggie. Hearing 27,217,984 unknown low powered devices with vari
/archives//html/RFI/2012-11/msg00045.html (7,733 bytes)

152. Re: [RFI] Signal on 433.875 (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Mon, 19 Nov 2012 17:50:34 -0800
"Beacons are in a different part of the band anyway.<sigh>" Per CFR or "band plan"? So long as you operate within the law, I guess your beacon would be there, instead of a different part... Kurt ____
/archives//html/RFI/2012-11/msg00048.html (8,019 bytes)

153. Re: [RFI] Signal on 433.875 (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Thu, 22 Nov 2012 03:39:34 -0800
Well, that is one option... They operate within a wide ISDM band. Do a search for the 430 MHz ISDM band, I do not recall off the top of my head, find the range, then search it on a scanning receiver
/archives//html/RFI/2012-11/msg00050.html (8,539 bytes)

154. Re: [RFI] any ideas on this one? (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Sun, 25 Nov 2012 18:53:18 -0800
Looks like a video carrier. Kurt _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo/rfi
/archives//html/RFI/2012-11/msg00057.html (8,231 bytes)

155. Re: [RFI] any ideas on this one? (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Sun, 25 Nov 2012 20:08:05 -0800
Kurt _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo/rfi
/archives//html/RFI/2012-11/msg00059.html (8,671 bytes)

156. Re: [RFI] Signal on 433.875 (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Fri, 30 Nov 2012 17:11:06 -0800
Found my old note... 434 MHz ISDM band, 433.050 - 434.790 MHz. Kurt _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo/rf
/archives//html/RFI/2012-11/msg00072.html (7,821 bytes)

157. Re: [RFI] RFI with sound bites (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Sun, 2 Dec 2012 22:12:22 -0800
Any portable radio with AM. I use equipment from LF to UHF in AM, it all works fine. Kurt _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.
/archives//html/RFI/2012-12/msg00006.html (7,662 bytes)

158. Re: [RFI] RFI Noise Issue (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Tue, 4 Dec 2012 10:18:22 -0800
Most things aren't "off" nowadays, if they have power, internal, or external, the run clocks, memory, soft-start circuits... To ensure things are off, unplug them, disconnect the batteries, then shu
/archives//html/RFI/2012-12/msg00013.html (8,188 bytes)

159. [RFI] Finding power line noise... (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Sat, 8 Dec 2012 20:44:40 -0800
I recently bought a Yaesu FT-2900 that had a showroom quality 2003 Ford Taurus attached to it... While monitoring telemetry and radar on 303.875 MHz in AM with a 2m/440 MHz vertical NMO mounted on th
/archives//html/RFI/2012-12/msg00021.html (6,879 bytes)

160. Re: [RFI] Finding power line noise... (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Sun, 9 Dec 2012 18:50:55 -0800
In the past I usually tracked noise interfering with Class C Telemetry on 11m and the 10m Ham band so used my 706MKII. I have complaints from a local Ham with noise on HF, have not heard it in the h
/archives//html/RFI/2012-12/msg00027.html (8,038 bytes)

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