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Re: [RFI] Help with Bad RFI.

To: <rfi@contesting.com>
Subject: Re: [RFI] Help with Bad RFI.
From: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Sat, 15 Jan 2011 05:55:00 -0500
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
Hi, Rick,
Some power companies don't learn until they've been burned a few times. :-)
But I agree, the nature of the noise doesn't sound like power line.  In that 
case, the power company is not responsible.
The plasma TVs that radiate noise have typically been more noisy on the lower 
I hate to bring up the thread gain, but the noise sounds like it could be 
coming from a high-powered indoor grow light. I say that because the one model 
we looked at had a peak of 9 MHz, with strong noise also above and below it.  
Most of them are operated on timers, though, so would be more regular than you 
are describing.
It should be possible to find it with a drivearound, but you'd need an HF rig 
to do so. Does your HF rig operate from 12 volts? If so, a  simple whip antenna 
and a mag mount for your car could do the trick, although you'd have to invest 
about $50 for the 4-magnet mount and another $20 for at least one of the 
single-band mobile whips.  If the noise is really loud, you may also need a 
step attenuator.
If you can find some local technical help, that can be useful. In some areas, 
there are technical volunteers that do sometimes help. Contact your ARRL 
Section Manager and ask to be put in contact with the Section Technical 
Coordinator, He or she will usually know what technical resources are 
Your local club may also have a technical guru, or at least someone with an HF 
mobile setup.  
I do have a mag mount and HF rig that could be loaned, but I fear that the cost 
of shipping would exceed the cost of your buying a mag mount, if you have a 
receiver capable of operating on the bands of interest.
Ed Hare, W1RFI
ARRL Laboratory Manager
225 Main St
Newington, CT 06111
Tel: 860-594-0318
Email: W1RFI@arrl.org


From: Rick Scott [mailto:w7psk@yahoo.com]
Sent: Fri 1/14/2011 12:25 PM
To: rfi@contesting.com
Subject: [RFI] Help with Bad RFI.

My Saga is a common one I think. But I need some expert help thus I joined the

I had bad 24hr power line noise and the local power company after much prying
came out and found 3 poles with
issues, however this took several months and then the repair more time with lots
of phone calls and promises
that didn't fix it thus prompting me filing a FCC complaint and them fixing it
Immediately after I sent them a copy of the complaint.

But now they wont even talk to me with this issue, probably rightfully so but it
was their inaction that prompted the complaint. 

And I wanted them with their DF to locate it.  but Alas not a chance.  And I
dont have the equipment to find it.  Ive driven around
with an AM CB but cannot locate it.

it started about 2 weeks after they fixed the power lines.   But this one, even
though it sounds like power line noise, cant
be because of the times.

It radiates worst from about 5.50MHZ up to about 11MHZ.   On 30 and 40 meters
its 20+ over 9 and kills my system totally, I cant even
hear locals.

It comes on anywhere from 10am to 2pm and goes off anywhere from 10pm to

It sounds just like power line noise.

I have a recording of it at home, I can post it and pictures on a PSK Software
if anyone needs that to determine more.

Any suggestions would be appreciated.  And if anyone is in the Puget Sound area
that has the tools/knowledge to help
I would appreciate it.

and Yes I do have PLASMA trouble as well on 80m, but they dont watch all the
time so I'm OK there.

Rick Scott
Everett, Washington

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