[RFI] RFI Digest, Vol 133, Issue 23

[ukbrown at aol.com]

   Dave I have had two types of noises like this.
 1. from a old mercury vapor outside light system that was on a photo electric cell. The bulb was burnt out and the owner took the bulb out but it was still hooked to the AC. Thus at about sunset it came on and stayed on till day light.
 2. I have a suspect grow light going on near me and its on 24/7 or it might be a router or some other computer device that is on 24/7. We did DF and with the power companies help. Located the house that is giving off the noise. BUT the owner is totally uncooperative with me or other hams as well at least from what I can tell. He is uncooperative with ARRL. Not sure if FCC ever or ever will contact him.
 Thus I do NO 160mtr contest since I can only hear the 40 over 9 signals. I hear it on 80mtrs to a lessor degree and a bit on 40mtrs and 20mtrs to a much lessor degree. 
 Oh I might add I have Plasma TV noise from my close eastern neighbor and now one from the west.
With Plasma TV there isnt much to do other than buy your neighbor a new tv. 
  I think all hams that do HF will have there time in the crucible of noise on way or the other.
 Thanks 
bill brown
 K0UK





1. Re: [Elecraft] Noise, RFI ? (Dave Hachadorian)----------------------------------------------------------------------Message: 1Date: Wed, 19 Feb 2014 11:23:40 -0700From: "Dave Hachadorian" <k6ll.dave at gmail.com>To: "reflector RFI" <rfi at contesting.com>Subject: Re: [RFI] [Elecraft] Noise, RFI ?Message-ID: <AF79EA5512B64FBDA9AC04666C07E1DF at Toshiba>Content-Type: text/plain; format=flowed; charset="iso-8859-1";	reply-type=originalSince the noise extends into the AM broadcast band, you should be able to DF it quickly with a portable AM radio with its loopstick antenna.  Since the loopstick is bi-directional, you will have to DF from two different locations and plot the intersection to resolve ambiguity.Dave Hachadorian, K6LLYuma, AZ-----Original Message----- From: Phil HystadSent: Wednesday, February 19, 2014 11:15 AMTo: Elecraft ReflectorSubject: [Elecraft] Noise, RFI ?Using my K3 I was trying to pick up a ZL2 station (New Zealand) around 18.08 MHz this morning (about 9:50 AM PST) when this huge noise blanketed everything out.  It was about 30/9 and absolutely solid across the spectrum shown on the P3.  Using my KPA500, I switched to the 20 meter band -- same noise, same level, same broadband impact.I determined that the noise was from roughly 1400 KHz all the way up to 28.05 MHz.  All about 30/9.  About the time that I finished checking this full MF/HF spectrum of noise it switched off.Then, it switched on, and stayed on for about 5 seconds, then off again.  I turned on my Icom R75.  The next time the noise came on I checked it with the R75 and the same noise, same 30/9 level, same broad across the bands.Obviously man-made or under man control as it switched on and off and was on for various periods of time.  This noise seems to be close, like generated in the neighborhood someplace.Anyone have ideas of the cause.  You noise experts (Jim?) should have ideas.  I was thinking maybe an arc welding machine but that is just a wild guess.  It sure seems to be something that can be switched on and off.  It is not periodic in that the on/off switching is at varying intervals.  The longest on period is about one minute, the shortest on period about 2 seconds.  And, it has been quiet for the last 10 minutes or so.Thanks for your help.73, phil, K7PEH______________________________________________________________Elecraft mailing listHome: http://mailman.qth.net/mailman/listinfo/elecraftHelp: http://mailman.qth.net/mmfaq.htmPost: mailto:Elecraft at mailman.qth.netThis list hosted by: http://www.qsl.netPlease help support this email list: http://www.qsl.net/donate.html ------------------------------Subject: Digest Footer_______________________________________________RFI mailing listRFI at contesting.comhttp://lists.contesting.com/mailman/listinfo/rfi------------------------------End of RFI Digest, Vol 133, Issue 23************************************