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Total 54 documents matching your query.

1. [RFI] High Efficiency Heat Pump (or furnace) RFI ? (score: 1)
Author: <donovanf@starpower.net>
Date: Sat, 15 Jan 2011 13:01:35 -0500 (EST)
In the last few weeks a new strong variable frequency 100% duty cycle RFI source suddenly appeared on 160 meters, radiated from a home one mile southeast of my QTH 24 hours per day. The RFI peaks in
/archives//html/RFI/2011-01/msg00144.html (7,863 bytes)

2. Re: [RFI] High Efficiency Heat Pump (or furnace) RFI ? (score: 1)
Author: <donovanf@starpower.net>
Date: Tue, 18 Jan 2011 21:23:37 -0500 (EST)
During a visit to W2GPS this afternoon, we happened to discuss my 160 meter RFI problem. Rick remembered that he's seen nearly identical RFI on 160 meters at his QTH (30 miles from here) for several
/archives//html/RFI/2011-01/msg00162.html (9,649 bytes)

3. Re: [RFI] Old RFI back and a new one help please (score: 1)
Author: <donovanf@starpower.net>
Date: Wed, 26 Jan 2011 12:37:33 -0500 (EST)
Rick, Before you invest time searching for the RFI outside your home, you should be certain that its not originating from inside your own home. You don't have to introduce a new device for RFI to ori
/archives//html/RFI/2011-01/msg00212.html (11,399 bytes)

4. Re: [RFI] Across-the-bay line noise from 17 miles away (score: 1)
Author: <donovanf@starpower.net>
Date: Tue, 1 Feb 2011 14:20:26 -0500 (EST)
Rick is precisely correct. When HF communications was in its heyday, the U.S. Navy NSS transmitter facility (Annapolis MD) was on the 230 acre Greenbury Point peninsula, nearly completely surrounded
/archives//html/RFI/2011-02/msg00004.html (9,846 bytes)

5. Re: [RFI] FW: Topband: Exciting noise sources (Tim Duffy K3LR) (score: 1)
Author: <donovanf@starpower.net>
Date: Mon, 28 Mar 2011 19:37:44 -0400 (EDT)
Hi Tom, The receiver I use most frequently for RFI hunting is a Yaesu FT-847 that covers HF, 50 MHZ, 144 MHz and 440 MHz. It has excellent sensitivity and an analog meter. I use a short vertical on t
/archives//html/RFI/2011-03/msg00113.html (9,102 bytes)

6. Re: [RFI] FW: Topband: Exciting noise sources (Tim Duffy K3LR) (score: 1)
Author: <donovanf@starpower.net>
Date: Tue, 29 Mar 2011 07:09:33 -0400 (EDT)
Phil, Our Baltimore area utility (BGE) has excellent RFI resolution capabilities and its never a problem to get them out here to resolve a problem. The Washington DC area utility (Pepco) is at least
/archives//html/RFI/2011-03/msg00126.html (9,999 bytes)

7. [RFI] SK: W9SU, Owner of Industrial Communication Engineers (ICE) (score: 1)
Author: <donovanf@starpower.net>
Date: Thu, 31 Mar 2011 10:40:07 -0400 (EDT)
http://www.arrl.org/news/owner-of-industrial-communication-engineers-mike-koss-w9su-sk _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/
/archives//html/RFI/2011-03/msg00151.html (6,742 bytes)

8. Re: [RFI] Second Report and Order BPL (score: 1)
Author: <donovanf@starpower.net>
Date: Tue, 25 Oct 2011 20:22:41 -0400 (EDT)
http://transition.fcc.gov/Daily_Releases/Daily_Business/2011/db1024/FCC-11-160A1.pdf -- Original message -- _______________________________________________ RFI mailing list RFI@contesting.com http://
/archives//html/RFI/2011-10/msg00034.html (7,254 bytes)

9. Re: [RFI] any ideas on this one? (score: 1)
Author: <donovanf@starpower.net>
Date: Sun, 25 Nov 2012 11:14:02 -0500 (EST)
Roger, You didn't mention how strong it is at your QTH. At a mile distance, it might be a high power source like a high efficiency furnace motor. Its time to get out a portable receiver to locate it.
/archives//html/RFI/2012-11/msg00056.html (10,057 bytes)

10. [RFI] 18-30 MHz RFI (score: 1)
Author: <donovanf@starpower.net>
Date: Tue, 22 Jan 2013 14:34:14 -0500 (EST)
Joe, I've had remarkably similar RFI for many years, but in my case its 18-30 MHz. The RFI sounds like white noise, but with one very important exception: it also has a much stronger strong narrow ba
/archives//html/RFI/2013-01/msg00127.html (13,993 bytes)

11. Re: [RFI] 18-30 MHz RFI (score: 1)
Author: <donovanf@starpower.net>
Date: Tue, 22 Jan 2013 15:04:27 -0500 (EST)
Kurt, I haven't yet tried to correlate observations at the nursery to RFI at my QTH 1/2 mile away. This RFI has been present for many years, fortunately my antennas are directive enough to minimize t
/archives//html/RFI/2013-01/msg00133.html (11,410 bytes)

12. Re: [RFI] Under-counter lighting that is quiet? (score: 1)
Author: donovanf@starpower.net
Date: Sun, 24 Mar 2013 16:54:56 -0400 (EDT)
I've used WAC under cabinet 12 volt xenon button lights for years with no trace of RFI or any other problem. http://www.waclighting.com/product/1238 73 Frank W3LPL -- Original Message -- Mine are abo
/archives//html/RFI/2013-03/msg00118.html (9,904 bytes)

13. [RFI] The energy-saving LED bulb that switched off the radio (score: 1)
Author: donovanf@starpower.net
Date: Thu, 28 Mar 2013 12:39:33 -0400 (EDT)
LED light bulbs are causing serious RFI in the UK too! See these links: http://conversation.which.co.uk/energy-home/led-bulb-radio-interference-dab-test http://www.avforums.com/forums/dab-digital-rad
/archives//html/RFI/2013-03/msg00128.html (7,463 bytes)

14. [RFI] Aparently RFI Quiet Dimmable LED Floodlight from Home Depot (score: 1)
Author: donovanf@starpower.net
Date: Fri, 29 Mar 2013 14:52:32 -0400 (EDT)
Forwarded from the PVRC Reflector -- Original Message -- The LED lighting I am using in my kitchen is a sealed fixture with a Fresnel like lens inside which is the LED bulb. It is sold at Home Depot.
/archives//html/RFI/2013-03/msg00143.html (8,025 bytes)

15. [RFI] FCC issues official citation for well pump RFI on Topband (score: 1)
Author: donovanf@starpower.net
Date: Wed, 24 Apr 2013 00:53:05 -0400 (EDT)
Official Citation to issued to Ruben D. Lopez, Jr. for operation of an incidental radiator, which caused harmful interference. Action by: District Director, Tampa Office, South Central Region, Enforc
/archives//html/RFI/2013-04/msg00021.html (7,043 bytes)

16. Re: [RFI] Topband: Another source of 160 meter RFI (score: 1)
Author: donovanf@starpower.net
Date: Wed, 24 Apr 2013 19:36:45 -0400 (EDT)
Before we get too euphoric about the FCC's performance in this matter, this is the text of an email sent to me today by the ham directly affected by this RFI: "So this is the third letter, and a visi
/archives//html/RFI/2013-04/msg00037.html (9,253 bytes)

17. [RFI] Safety Recall: 15 million APC Surge Protectors sold before 2003 (score: 1)
Author: donovanf@starpower.net
Date: Sat, 2 Nov 2013 01:31:26 -0400 (EDT)
Now this is a good reason to avoid use of MOVs in branch circuits! There are 700 reports of overheating and melting caused by Surge Protector Devices sold prior to 2003 and 55 property damage reports
/archives//html/RFI/2013-11/msg00000.html (11,227 bytes)

18. Re: [RFI] Headphone Hum (score: 1)
Author: donovanf@starpower.net
Date: Tue, 10 Dec 2013 10:23:32 -0500 (EST)
Gary, This definitely is an off topic post, but its such a common and easily solved problem that its worthy of a reply. The Pyle PHE300 2-Channel Hum/Noise Destroyer is an inexpensive and extremely e
/archives//html/RFI/2013-12/msg00079.html (12,188 bytes)

19. Re: [RFI] Daisy-chain grounding [was DigiKeyer II] (score: 1)
Author: donovanf@starpower.net
Date: Fri, 20 Dec 2013 15:42:34 -0500 (EST)
Note that the Motorola Standards and Guidelines for Communications Sites (page 8-3) states that: "Braided wire shall not be used..." 73 Frank W3LPL -- Original Message -- Jim, Actually, you are corre
/archives//html/RFI/2013-12/msg00116.html (13,487 bytes)

20. Re: [RFI] RFI from Induction Cooktops? (score: 1)
Author: donovanf@starpower.net
Date: Fri, 24 Jan 2014 19:35:22 -0500 (EST)
Fred, My five year old Broan induction cooktop is RFI free and trouble free. 73 Frank W3LPL -- Original Message -- Been off the reflector for quite a few months. Searched the archives and found nothi
/archives//html/RFI/2014-01/msg00017.html (7,487 bytes)


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