Search String: Display: Description: Sort:

Results:

References: [ +from:ka5s@earthlink.net: 420 ]

Total 420 documents matching your query.

261. Re: [RFI] AM Radio Interference On 75 meters (score: 1)
Author: Cortland Richmond <ka5s@earthlink.net>
Date: Tue, 18 Sep 2012 14:10:20 -0400
Joe, KHIT <http://en.wikipedia.org/wiki/KHIT> 1450 AM Reno Lotus Radio Corp. Sports KIHM <http://en.wikipedia.org/wiki/KIHM> 920 AM Reno IHR Educational Broadcasting Religious KJFK <http://en.wikiped
/archives//html/RFI/2012-09/msg00123.html (11,772 bytes)

262. Re: [RFI] Burst of buzzy tones from speaker of turned off radio (score: 1)
Author: Cortland Richmond <ka5s@earthlink.net>
Date: Thu, 27 Sep 2012 09:51:10 -0400
Sounds like rectified GSM RF. Cortland KA5S On 9/27/2012 0922, Barry Merrill, W5GN wrote: We were staying in a motel off the Interstate in Blytheville, AR, and the AM Clock Radio, which had been left
/archives//html/RFI/2012-09/msg00155.html (7,401 bytes)

263. Re: [RFI] rfi problem (score: 1)
Author: Cortland Richmond <ka5s@earthlink.net>
Date: Thu, 01 Nov 2012 17:40:47 -0400
Some years ago, AT&T Cable installed carrier current modems on its boxes to handle dialup for billing. These operated on 3.52 MHz, which quickly came to the notice of the Northern California DX Assso
/archives//html/RFI/2012-11/msg00007.html (9,490 bytes)

264. Re: [RFI] 160m ARDF / fox hunt antenna (score: 1)
Author: Cortland Richmond <ka5s@earthlink.net>
Date: Fri, 30 Nov 2012 17:18:01 -0500
Paul, Well done! I've done some sniffing like this on 80 meters, and you need to drastically reduce the receiver sensitivity to make sense of things when you get close in. I used a 6 inch diameter un
/archives//html/RFI/2012-11/msg00071.html (9,161 bytes)

265. Re: [RFI] Telephones and DSL (score: 1)
Author: Cortland Richmond <ka5s@earthlink.net>
Date: Sun, 09 Dec 2012 19:38:58 -0500
Rick, Downstream, ADSL (up to 2.3 mbps) and ADSL2 (up to 12 mbps) spectrum is as high as 1.1 MHz and ADSL2+ (up to 23 mbps) as high as 2.2 MHz. If you are on 160 you could directly affect ADSL2+. You
/archives//html/RFI/2012-12/msg00025.html (8,692 bytes)

266. Re: [RFI] Amtrak electric noise (score: 1)
Author: Cortland Richmond <ka5s@earthlink.net>
Date: Mon, 10 Dec 2012 21:25:11 -0500
It appears that may be my required solution. I'd rather deal with the entity in the company whose mandate it is to fix these issues. At least it appears Amtrak is the culprit. I may have one string t
/archives//html/RFI/2012-12/msg00040.html (9,479 bytes)

267. Re: [RFI] Telephones and DSL (score: 1)
Author: Cortland Richmond <ka5s@earthlink.net>
Date: Thu, 13 Dec 2012 15:58:13 -0500
One bad conductor at a subscribers drop, or a bad protector, can potentially unbalance things enough the whole area radiates. Cortland KA5S On 12/13/2012 1548, Roger D Johnson wrote: I got out a tele
/archives//html/RFI/2012-12/msg00046.html (8,977 bytes)

268. Re: [RFI] Screenshots of a wideband short pulse (score: 1)
Author: Cortland Richmond <ka5s@earthlink.net>
Date: Thu, 13 Dec 2012 22:34:14 -0500
Aaron, Do you have any way of displaying the time-domain envelope of these events? Cortland KA5S _______________________________________________ RFI mailing list RFI@contesting.com http://lists.conte
/archives//html/RFI/2012-12/msg00054.html (7,127 bytes)

269. Re: [RFI] Screenshots of a wideband short pulse (score: 1)
Author: Cortland Richmond <ka5s@earthlink.net>
Date: Fri, 14 Dec 2012 03:58:18 -0500
Not quite; what does it look like on a 'scope? Can you display the pulse from perhaps, an IF output? Even simpler, try connecting a 'scope directly to the antenna; you may or may not need a broad ban
/archives//html/RFI/2012-12/msg00056.html (8,629 bytes)

270. Re: [RFI] HDTV: Plasma vs LCD (score: 1)
Author: Cortland Richmond <ka5s@earthlink.net>
Date: Tue, 25 Dec 2012 23:53:18 -0500
TV receivers are not tested for radiated emissions below 30 MHz. From FCC MP-3: http://transition.fcc.gov/Bureaus/Engineering_Technology/Documents/measurement/mp3/mp3-1985.pdf 8.2 Electromagnetic fie
/archives//html/RFI/2012-12/msg00141.html (9,482 bytes)

271. Re: [RFI] Oscilloscope requirements for power line noise locating (score: 1)
Author: Cortland Richmond <ka5s@earthlink.net>
Date: Sun, 30 Dec 2012 12:35:56 -0500
Paul, Even an audio scope is good enough if you first rectify the RF to recover the envelope. I presume that's what they were talking about WRT the Sadelco (etc.) FS meter. These old CB meters' sensi
/archives//html/RFI/2012-12/msg00175.html (8,163 bytes)

272. Re: [RFI] Oscilloscope requirements for power line noise locating (score: 1)
Author: Cortland Richmond <ka5s@earthlink.net>
Date: Mon, 31 Dec 2012 10:31:57 -0500
(Hitting forehead): I should have thunk. Didn't connect the Sadelco name to the right KIND of FS meter. Heh. Memory is the second thing to go... I have a Holland St5128s I want to add a scope (ideall
/archives//html/RFI/2012-12/msg00181.html (9,665 bytes)

273. Re: [RFI] Ultrasonic Dish (score: 1)
Author: Cortland Richmond <ka5s@earthlink.net>
Date: Wed, 02 Jan 2013 16:32:33 -0500
If you can get a good image of 50 or 80 foot distant store lighting projected off the interior curve onto a nearby flat surface, you might have a good one. I'll see tonight if I can find one to try.
/archives//html/RFI/2013-01/msg00018.html (9,843 bytes)

274. Re: [RFI] 9Khz spacing of intermodes carriers interference (score: 1)
Author: Cortland Richmond <ka5s@earthlink.net>
Date: Sun, 20 Jan 2013 17:19:21 -0500
An IMD calculator at http://www.arcticpeak.com/radiopages/intermodulationproducts.htm shows Radio Mevaser Tov at 774 AM and Reshet Alef at 1458 AM with a 7th order IMD prduct on 3510 KHz. Are these y
/archives//html/RFI/2013-01/msg00088.html (9,255 bytes)

275. Re: [RFI] 9Khz spacing of intermodes carriers interference (score: 1)
Author: Cortland Richmond <ka5s@earthlink.net>
Date: Sun, 20 Jan 2013 17:20:55 -0500
PS: Also 3555 _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo/rfi
/archives//html/RFI/2013-01/msg00089.html (7,705 bytes)

276. Re: [RFI] Help with Buzzing Monitor (score: 1)
Author: Cortland Richmond <ka5s@earthlink.net>
Date: Sun, 20 Jan 2013 21:16:13 -0500
A *quick Google(tm) search on the model number* reveals a user site. For specifics see http://www.badcaps.net/forum/showpost.php?p=103476&postcount=16 QUOTE ...replaced three Capxon caps in a Q9 (pur
/archives//html/RFI/2013-01/msg00094.html (8,155 bytes)

277. Re: [RFI] 9Khz spacing of intermodes carriers interference (score: 1)
Author: Cortland Richmond <ka5s@earthlink.net>
Date: Wed, 23 Jan 2013 13:39:19 -0500
On 1/23/2013 1316, N1BUG wrote: ... He said he has carriers every 9 kHz. This is a well known problem from AM BC mixes in Europe, where their MW BC stations are spaced 9 kHz apart. I may be wrong but
/archives//html/RFI/2013-01/msg00137.html (9,644 bytes)

278. Re: [RFI] Putting Toroids on the Service Lines (score: 1)
Author: Cortland Richmond <ka5s@earthlink.net>
Date: Mon, 28 Jan 2013 23:53:43 -0500
I got hold of a couple of Corcom 3 phase 200A filters and have been thinking about running one single phase. IIRC that would require derating to 100A, plenty for my service, and as long as the meter
/archives//html/RFI/2013-01/msg00144.html (8,600 bytes)

279. Re: [RFI] RFI suppression cores for 147 MHz (score: 1)
Author: Cortland Richmond <ka5s@earthlink.net>
Date: Sun, 03 Mar 2013 05:11:32 -0500
Listen to Dale; I've been to his shop (when he was still there) in Cedar Rapids. Interesting days. The connector is typical of its type. Be sure it is actually making contact in the shielded receptac
/archives//html/RFI/2013-03/msg00008.html (11,772 bytes)

280. Re: [RFI] router RFI (score: 1)
Author: Cortland Richmond <ka5s@earthlink.net>
Date: Mon, 04 Mar 2013 07:34:28 -0500
Unfortunately, being retired I no longer have access to test results that would refresh my memory, and I (perhaps fortunately) don't have Ethernet at home that I could use to rediscover it. Maybe I'l
/archives//html/RFI/2013-03/msg00013.html (8,119 bytes)


This search system is powered by Namazu