Re: [IRCA] QRN problem - any ideas?

[Gerald Wolczanski <jerrywlinux@xxxxxxxxxxx>]

Jim, this noise has been plaguing me as well.  I scrolled through the
lower HF spectrum this morning and found strong, fairly wideband (10
+kHz) burbly QRN/QRM signals throughout the band from 2 - 7 MHz (didn't
look higher, but I've seen signals on 20 and 15 meters as well).

I find it loud on 4065kHz (among many other frequencies).

The last time I had a noise like this, I put my Ten-Tec 509 on
batteries, made a little loop, and went "sniffing" in the neighborhood.
I found a leaky power line spark gap about 300 meters from my house.  It
was raucous and the noise had been reported by another ham about a mile
away.  I called the local power company and they quickly fixed it.

So, if you and I are hearing the same crap, it ain't local.  But, in the
next week or so, I am gonna shut off my house power to eliminate
anything in my house as a source....and then I'll go "sniffing" in my
neighborhood which is sparsely populated (1 - 2 acre lots).

This interference appears o/a 7040kHz....a popular 40 meter frequency
for us QRP'ers.  What  pain.


Jerry W
KI4IO
Warrenton, VA

On Sat, 2012-04-28 at 09:20 -0500, James Pogue wrote:
> Dear friends and list members,
> 
>  
> 
> I am having a terrible time here with interference that is ruining my
> listening/hamming experience and am hoping someone can offer some practical
> suggestions. Here's the situation.
> 
>  
> 
> The interference - basically a continuous raspy sound - seems to come up at
> about 0830 local time here each day. It is often (but not always) quiet
> before then. The problem usually persists until late at night, i.e. 2300
> local or later. The AM broadcast band seems to be affected the least, 80
> meters suffers a little, but every other band from 40 through 10 meters is
> affected at different levels. I have tried some rudimentary methods to try
> and isolate it but without success. I'm not even sure if it is atmospheric
> (i.e., coming through my antenna) or through the AC line (mains). My antenna
> is a G5RV Jr. in an inverted "V" configuration.
> 
>  
> 
> I am in an older house, 2-story in a residential neighborhood of Memphis, on
> essentially a zero line lot. I can supply the exact address if anyone wants
> to see the house on Google maps street views. There are renters upstairs.
> 
>  
> 
> I have limited equipment available for isolating the problem, and even less
> technical knowledge. I'd really appreciate any suggestions for solving this
> problem that now produces QRN at an S-9 level. I haven't called the local
> power company yet, but don't hold out much hope for help from them. Thanks
> very much.
> 
>  
> 
> Jim Pogue - KH2AR/W4
> 
> Memphis, TN USA
> 
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