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[RFI] Broadcast station RFI Mixing

To: "rfi@contesting.com" <rfi@contesting.com>
Subject: [RFI] Broadcast station RFI Mixing
From: Rich Hallman - N7TR <rich@n7tr.com>
Date: Sun, 20 Apr 2014 01:13:20 +0000
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
Over the past year I have been hearing a local broadcast station on 80 and 40 
meters.  80 meters is the worse.  Filters will not help, and sounds like there 
is something rectifying.  I think I may have a problem on the power pole since 
it seems to go away for a day or so after it rains.  Also...I have not 
eliminated that there may be a problem at the broadcast site.  The station is 
KKOH and is about 10 miles from me...but line of site.

I did a YouTube video of what I am hearing...and for the most part I can hear 
the carrier every 10 khz...so places like 3900 is real bad.  With the 
intermittent connection as it sounds like...it messes up the entire 80 and 40 
meter band.  Sounds like a bad connection in my antenna...but I have already 
confirmed my antennas are fine and I confirmed I can also hear the mixing on a 
mobile 80 meter whip in the truck as well as other antennas.  On 40 its lower 
signal...but also can be heard every 10 khz or so and the mixing is very 
intermittent / scratchy.  Seems like its also more intermittent with wind.

Here is the video...   http://youtu.be/rZ8gXRKGkxE

I just emailed my power company the video as well.  Will get the KKOH station 
engineer to listen as well to make sure they don't have an issue with an 
insulator or ground on their tower.

Any other thoughts?

Rich N7TR
Telnet: dxc.n7tr.com N7TR DXCluster

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