CQ-Contest
[Top] [All Lists]

[RFI] RFI Frustration

To: RFI Reflector <rfi@contesting.com>
Subject: [RFI] RFI Frustration
From: Jim Idelson <k1ir@designet.com>
Date: Thu, 14 Feb 2008 18:13:41 -0500
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
Well, it's the night before the contest and the noise is still there.

It's a 24/7 noise and I can DF it in one direction with yagis on 40-10 meters. 
It's pretty broadband and it has a sputtering sound, somewhat like this light 
dimmer noise -  
http://www.arrl.org/tis/info/HTML/rfi-noise/noise/noise-files/lightdimmer.mp3

found at 
http://www.arrl.org/tis/info/HTML/rfi-noise/appliances.html

Is a noisy light dimmer going to be a constant source or does it change with 
load and when turned off?
I had been listening for this at high frequencies, but when I saw that this is 
something that has a baseband frequency in the 150kHZ range, I tuned my big rig 
in the station down there on a 160m dipole, and there is a very loud noise at 
157kHz. It is also very loud at 78.5kHz and at all multiples of 78.5kHz right 
up into the AM broadcast band. 


Suggestions for better DF'ing techniques? I've been outside around the 
neighborhood with my HT, sniffing power meters, wires coming down he power 
poles, etc. There are some hot spots, but nothing like a smoking gun.

I have a little time tomorrow to sniff around the neighborhood some more to see 
what I can find. I've been in the two closest house with the HT, but found 
nothing.

Wouldn't it be cool to find and eliminate this just in tme for the contest?

73,

Jim Idelson K1IR
email    k1ir at designet.com
web    http://www.k1ir.com
_______________________________________________
RFI mailing list
RFI@contesting.com
http://lists.contesting.com/mailman/listinfo/rfi

<Prev in Thread] Current Thread [Next in Thread>