Oh, in addition. All power lines are underground around here. So a cracked
pole insulator is probably not the reason at least for me.
73
Mike - KM0T
----- Original Message -----
From: <michael.findley@ni.com>
To: <kr1st@amsat.org>
Cc: "Pete Smith" <n4zr@contesting.com>; <rfi-bounces@contesting.com>;
<rfi@contesting.com>
Sent: Thursday, January 22, 2004 8:44 AM
Subject: Re: [RFI] Can you identify this interference?
>
>
>
>
> This also looks like a dry cracked insulator on the power lines. This type
> of noise shows up after a good dry spell. If it rains than the noise
should
> go away until it dries up again. If this is the symptoms then good luck
> with the utility company because their responsiveness is slower than a
8086
> running win 2K.
> Hope this helps,
> Mike, NCT
>
>
>
> Alex
> <kr1st@amsat.org> To: Pete Smith
<n4zr@contesting.com>
> Sent by: cc:
rfi@contesting.com
> rfi-bounces@conte Subject: Re: [RFI] Can you
identify this interference?
> sting.com
>
>
> 01/22/2004 08:22
> AM
> Please respond to
> kr1st
>
>
>
>
>
>
> Hi Pete,
>
> Pete Smith wrote:
>
> > It looks and sounds to me like at least 2 electric fences at differing
> > signal strengths and with their "tick" interval slightly different. Is
> > that possible, given your QTH?
>
> That was my first thought, too. I thought maybe someone put something up
> for their dogs. I'm not in a rural area and there are no farms nearby,
> and no one keeps animals except the usual pets. The yards in this
> neighborhood are not big enough for that. :(
>
> I did cut the power to the house, and checked everything that runs on
> battery power, to no avail though. I also wonder if the noise gets
> propagated though the power lines as the interference is strongest near
> the house wiring. But that may be just the house wiring acting as a
> large antenna that couples its energy into the whip of the portable
> receiver. Same thing happens when I hold the whip near the chain link
> fence of the neighbors.
>
> I also drove around in the neighborhood with a scanner (136 MHz, AM) and
> a portable shortwave receiver, but I can't find any hot spots. In fact,
> it disappears just a 1 or 2 houses down the road from me. I'm inclined
> to think it's something that radiates a rather weak signal and is close
> to me. Hopefully I get some time soon to do some DFing with the scanner
> and a VHF Moxon.
>
> Thanks for the suggestions and 73,
> --Alex KR1ST
> http://www.kr1st.com
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>
>
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