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Total 571 documents matching your query.

261. Re: [RFI] Decoupling small trailer to reduce RFI? (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Sat, 24 May 2014 23:06:21 -0700
Based on my observations when I operated mobile HF, you'd want the trailer to be between a block and a 1/4 mile away. That's how far I've ID's a Prius just from the spew they put out when I'm on the
/archives//html/RFI/2014-05/msg00063.html (7,126 bytes)

262. Re: [RFI] Utility coming tomorrow to chase RFI (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Tue, 3 Jun 2014 14:26:51 -0700
Going out on a limb here... Did they LISTEN for RFI? Kurt _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo/rfi
/archives//html/RFI/2014-06/msg00015.html (8,417 bytes)

263. Re: [RFI] Utility coming tomorrow to chase RFI (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Tue, 3 Jun 2014 14:33:46 -0700
I'd say you have a particularly dead HF receiver. My mobile rig, which had a compromise antenna gave me an ambiguous range of miles without adding up to130+ dB attenuation. Kurt ____________________
/archives//html/RFI/2014-06/msg00016.html (9,590 bytes)

264. Re: [RFI] Utility coming tomorrow to chase RFI (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Tue, 3 Jun 2014 14:31:47 -0700
That would be any of them that cover that range and mode in the past couple decades or so. A better question would be, what very few rigs are so severely limited to NOT cover this? I've used a Yaesu
/archives//html/RFI/2014-06/msg00017.html (9,307 bytes)

265. Re: [RFI] Utility coming tomorrow to chase RFI (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Tue, 3 Jun 2014 23:54:00 -0700
Interesting. Enter a frequency, like dialing a phone, pretty simple. Repeater? F-RPT (function-repeater) turn the knob up or down for offset. Tone? F-Tone, again, spin the dial. 99% of my Yaesu's us
/archives//html/RFI/2014-06/msg00022.html (8,446 bytes)

266. Re: [RFI] Utility coming tomorrow to chase RFI (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Wed, 4 Jun 2014 11:18:40 -0700
Take into account the radio, antenna, feedline, matching newtorks, et cetera... Power line noise can start at 60 Hz, continue up through microwaves, but many factors, as many as there are radios and
/archives//html/RFI/2014-06/msg00026.html (8,310 bytes)

267. Re: [RFI] Utility coming tomorrow to chase RFI (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Thu, 5 Jun 2014 00:32:03 -0700
But it CAN be a characteristic of the receiver or anything else feeding it. Take for example my Kenwood TS-570. Excellent receiver, co-ax fed for MF and above, even receives AMBC down to the bottom,
/archives//html/RFI/2014-06/msg00029.html (8,866 bytes)

268. Re: [RFI] Subject: Elk Antennas (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Thu, 19 Jun 2014 02:24:49 -0700
enjoy Wasn't the question about what antenna to use for tracking RFI? Kurt _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/lis
/archives//html/RFI/2014-06/msg00116.html (6,754 bytes)

269. Re: [RFI] Subject: Re: Recommended Handheld VHF-UHF Yagi? (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Mon, 23 Jun 2014 02:00:07 -0700
I've played with a couple of 3 element "noise locators" on VHF, both were useless, no directivity at all, OR, RFI was everywhere. Couldn't tell, went back to a vertical sense antenna and attenuator
/archives//html/RFI/2014-06/msg00136.html (9,200 bytes)

270. Re: [RFI] Looking for low-RFI high efficiency lighting (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Tue, 8 Jul 2014 01:33:48 -0700
"No, I don't want to install high efficiency stuff and then replace it after the inspector leaves." What about some of those Chinese 97W incandescents to replace the old US made 100W? They seem to me
/archives//html/RFI/2014-07/msg00007.html (7,041 bytes)

271. Re: [RFI] Non-RF sensitive hardwired smoke/fire alarms? (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Sat, 12 Jul 2014 23:08:54 -0700
About fifteen years ago I got a kick out of driving through large cities such as LA while operating HF and setting off a wave of alarms behind me. One night I was at a coffee shop and some twit on a
/archives//html/RFI/2014-07/msg00023.html (8,742 bytes)

272. Re: [RFI] Another possible problem? (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Wed, 30 Jul 2014 23:56:55 -0700
I was pretty suspicious when they put them in around my area. I noticed no increase in noise, even when driving around each lamp. The only one I did find noise on was a malfunctioning one that was f
/archives//html/RFI/2014-07/msg00099.html (9,329 bytes)

273. Re: [RFI] Another possible problem? (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Thu, 31 Jul 2014 23:02:50 -0700
"Although I am still wary, the stress level has been much reduced." I do a lot of weak signal stuff, so I was really concerned, I couldn't hear them parked under a light with a 10m 1/4 whip on 10m in
/archives//html/RFI/2014-08/msg00000.html (6,525 bytes)

274. Re: [RFI] Cree LED Light Bulb (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Mon, 11 Aug 2014 01:28:03 -0700
I think the rating has to do more with heat dissipation. Speaking of which... I have a couple of open rubber covered light sockets hanging from a box in my garage, the type used for quickie lighting
/archives//html/RFI/2014-08/msg00011.html (7,114 bytes)

275. Re: [RFI] WallyHome? (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Mon, 1 Sep 2014 17:29:16 -0700
What about even the legal CB comms in the area? Then there's the mega-Watt guys that cover some 200 KHz and can be heard from AL to NV. Hmm... Heard something new on Class C frequency of 27.195 MHz
/archives//html/RFI/2014-09/msg00008.html (8,121 bytes)

276. Re: [RFI] WallyHome? (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Mon, 1 Sep 2014 21:08:36 -0700
Only if a Sony SX-750 is like a 27 MHz Wallyhome device. Kurt _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo/rfi
/archives//html/RFI/2014-09/msg00010.html (7,350 bytes)

277. Re: [RFI] WallyHome? (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Tue, 2 Sep 2014 21:11:38 -0700
Speaking of which, anyone made any off-air recordings of these 27 MHz Wally devices yet? I did find one for $35, debating about buying it or holding out for a used one from a thrift shop for a quart
/archives//html/RFI/2014-09/msg00014.html (8,446 bytes)

278. Re: [RFI] 10M interference (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Mon, 8 Sep 2014 20:11:46 -0700
Small recording? Kurt _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo/rfi
/archives//html/RFI/2014-09/msg00020.html (6,886 bytes)

279. Re: [RFI] LED Street lights (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Thu, 9 Oct 2014 21:12:05 -0700
Regarding the average street light you may find an many cities... I've passed under tens of thousands, made by many companies. All have been silent except when they malfunction as indicated by flick
/archives//html/RFI/2014-10/msg00005.html (7,516 bytes)

280. Re: [RFI] LED Street lights (score: 1)
Author: "KD7JYK DM09" <kd7jyk@earthlink.net>
Date: Fri, 10 Oct 2014 20:48:11 -0700
"I'm wondering about the LED replacements, Wondering if they are hash producers?" It's not the LEDs themselves that makes noise, it's the giant switching mode power supply that feeds them that goes b
/archives//html/RFI/2014-10/msg00013.html (8,243 bytes)

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