[RFI] DFing power line noise

Richard (Rick) Karlquist (N6RK) richard at karlquist.com
Mon Jul 19 12:00:47 EDT 2004

First, rotate your beam and determine direction from that.
Second, get a handheld scanner with AM capability and a
whip antenna, and walk the power line.  You'll be able to
hear the bad pole when you get near it.  Check a lot of
different frequencies for best results.  The whip antenna is
best for finding the basic area of the noise.  Then you
can switch to a VHF Yagi and try to pinpoint it if you 
want, or let the power company do that.  You just need to
get them within a pole or two and they'll take over.

Rick N6RK

> -----Original Message-----
> From: rfi-bounces at contesting.com [mailto:rfi-bounces at contesting.com]On
> Behalf Of Hisashi T Fujinaka
> Sent: Monday, July 19, 2004 8:53 AM
> To: rfi at contesting.com
> Subject: [RFI] DFing power line noise
> I have a problem where I get huge static crashes whenever the wind
> blows. This happens on all my antennas (leading me to think the problem
> is external) and I can hear it on at least 40-15M (I haven't tried on
> other bands).
> I've almost built the RFI detector from the March 2001 QST, but I keep
> getting held up completing the Moxon antenna.
> My questions are: would that be a good DF rig? Does this sound like
> power line noise?
> Thanks for any help.
> -- 
> Hisashi T Fujinaka - htodd at twofifty.com
> BSEE(6/86) + BSChem(3/95) + BAEnglish(8/95) + MSCS(8/03) + $2.50 = latte
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