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Total 571 documents matching your query.

121. Re: [RFI] RFI & Alarm Systems? (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Fri, 3 Aug 2012 20:56:18 -0700
Many of the older ones, especially Telectron (many in my collection) operated by a tone on 27.255 MHz, CB channel 23. With the dramatic increase in CB usage beginning in the late 60's, they moved up
/archives//html/RFI/2012-08/msg00011.html (8,577 bytes)

122. Re: [RFI] Noise emitted by rotator (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Sat, 4 Aug 2012 22:07:58 -0700
I would guess that it's white noise generated by arcing due to metallic/carbon debris on the motors rotor contacts. I've noticed this with two DC motors over the years. Kurt ________________________
/archives//html/RFI/2012-08/msg00017.html (7,426 bytes)

123. Re: [RFI] MFJ-856 oddity (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Wed, 15 Aug 2012 19:52:42 -0700
For comparison. I use a 24" whip, not a Yagi in my RFI sniffing. I use up to 131dB of attenuation. Kurt _______________________________________________ RFI mailing list RFI@contesting.com http://lis
/archives//html/RFI/2012-08/msg00081.html (8,011 bytes)

124. Re: [RFI] MFJ 1026 under the hood? (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Wed, 22 Aug 2012 10:35:21 -0700
If fuel injected, the pump is usually a constant whine. If an on-demand pump, you might hear and puttering arcing sound every few seconds at idle, more often when driving. If a mechanical pump, no no
/archives//html/RFI/2012-08/msg00096.html (7,302 bytes)

125. Re: [RFI] Recent 40 Meter AC noises? (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Fri, 31 Aug 2012 13:45:11 -0700
I don't hear it. Recording? Sounds like one of the newer over the horizon radars, Pluto system maybe? There's been a few popping up that match your description. Kurt ________________________________
/archives//html/RFI/2012-08/msg00131.html (7,059 bytes)

126. Re: [RFI] Success!!!!! (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Fri, 31 Aug 2012 13:59:27 -0700
Yeah, those pot farmers can get cagey beyond a certain point... Kurt _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo/
/archives//html/RFI/2012-08/msg00132.html (7,250 bytes)

127. Re: [RFI] Name That Noise (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Fri, 31 Aug 2012 16:56:33 -0700
I have heard this type of sound before. In MY case... Once was loose hardware on power wires moving in the wind, another was from a defective mercury vapor lamp in a neighbors yard near my friends ho
/archives//html/RFI/2012-08/msg00134.html (7,979 bytes)

128. Re: [RFI] Name That Noise (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Fri, 31 Aug 2012 17:24:08 -0700
2 for hardware... Kurt _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo/rfi
/archives//html/RFI/2012-08/msg00136.html (7,322 bytes)

129. [RFI] Raucous ruckus... (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Fri, 31 Aug 2012 21:39:03 -0700
Yesterday I picked up a Klein Tools Digital Circuit Breaker Finder, model ET 300. In itself is is a poorly functional erratic POS at best and I will be returning it shortly. Nothing beats flipping br
/archives//html/RFI/2012-09/msg00000.html (7,035 bytes)

130. Re: [RFI] Raucous ruckus... (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Sat, 1 Sep 2012 21:05:57 -0700
Yes And if someone does, kiss your reception goodbye. I made the comments, recording and spectrogram in case someone has such a problem, it can be identified easier. I was complaining about what I d
/archives//html/RFI/2012-09/msg00003.html (7,696 bytes)

131. Re: [RFI] Raucous ruckus... (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Sat, 1 Sep 2012 21:07:17 -0700
Bingo. Kurt Et cetera... _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo/rfi
/archives//html/RFI/2012-09/msg00004.html (7,443 bytes)

132. Re: [RFI] Line Noise Question (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Sun, 9 Sep 2012 18:19:13 -0700
Is it constant? Kurt _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo/rfi
/archives//html/RFI/2012-09/msg00028.html (6,613 bytes)

133. Re: [RFI] Line Noise Question (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Mon, 10 Sep 2012 18:29:56 -0700
Constant day or night? Is it 24/7, or only after sundown? Pattern, like 18 hours on, six off (typical for growing). Does it correlate to when the street lights are on, or maybe a timed light on a po
/archives//html/RFI/2012-09/msg00042.html (7,748 bytes)

134. Re: [RFI] Line Noise Question (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Mon, 10 Sep 2012 18:31:37 -0700
I have many boxes of the X10 equipment here. I never used it, so am not familiar with any noise it may make. I also have several sets of wireless phone jacks. My only experience with those was about
/archives//html/RFI/2012-09/msg00043.html (7,624 bytes)

135. Re: [RFI] Observations of a low RFI Plasma TV and a very bad RFI plasma - same QTH (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Tue, 11 Sep 2012 13:02:47 -0700
And, something to keep in mind... The newer switching mode power supplies that usually cause most of the grief can be replaced with a 60 Hz tranformer based supply from a thrift shop for 25-50 cents
/archives//html/RFI/2012-09/msg00051.html (8,027 bytes)

136. Re: [RFI] Noise changes when room lights turn on / off (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Wed, 12 Sep 2012 11:58:21 -0700
Have you tried killing the main breaker to your property? That could help rule out things on your end. There are "ghost" currents from things running while "off", a lot of household electronics to th
/archives//html/RFI/2012-09/msg00061.html (8,321 bytes)

137. Re: [RFI] Noise changes when room lights turn on / off (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Sat, 15 Sep 2012 20:35:27 -0700
An incandescent with a cracked, but not broken filament, as well as a heat shield that has dropped and is arcing on the power leads/supports will sound terrible. Kurt _______________________________
/archives//html/RFI/2012-09/msg00091.html (9,620 bytes)

138. Re: [RFI] Noise changes when room lights turn on / off- NOISEFOUND!!!!! (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Sat, 22 Sep 2012 21:49:16 -0700
You're lucky! MOST noise I've had had been directly associated with these POS... In the past decade it's been power line noise or CFLs. Kurt _______________________________________________ RFI maili
/archives//html/RFI/2012-09/msg00148.html (10,385 bytes)

139. Re: [RFI] New Noise (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Sat, 6 Oct 2012 09:27:06 -0700
Recording? Does it sound like a toy space gun? Widen out your receive bandwidth and try in USB. Kurt _______________________________________________ RFI mailing list RFI@contesting.com http://lists.c
/archives//html/RFI/2012-10/msg00005.html (6,925 bytes)

140. Re: [RFI] New Noise (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Sat, 6 Oct 2012 19:42:11 -0700
OK, let us know if you hear it again, try and get a small recording. Kurt _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listi
/archives//html/RFI/2012-10/msg00007.html (6,648 bytes)

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