Sounds like an electric fence, for a dog, maybe?
K4GLM
----- Original Message -----
From: <rfi-request@contesting.com>
To: <rfi@contesting.com>
Sent: Tuesday, October 17, 2006 12:00
Subject: RFI Digest, Vol 46, Issue 6
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> Today's Topics:
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> 1. Re: DFing an HF RFI source (Kelly Johnson)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 17 Oct 2006 08:22:22 -0700
> From: "Kelly Johnson" <n6kj.kelly@gmail.com>
> Subject: Re: [RFI] DFing an HF RFI source
> To: rfi@contesting.com
> Message-ID:
> <a3bdab890610170822l33a9e20bkfe2acaeb72982ba6@mail.gmail.com>
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> Thanks. I was able to track the source down to one of 3 houses using
> a whip antenna. I'll need something more directional to narrow it
> down further OR go house to house. The houses are about 200 yards
> away or so. I'm really curious what device is causing this problem.
> It only seems to affect 17 meters and it sounds like a "tick, tick,
> tick" at about a 1Hz rate.
>
> On 10/16/06, Jay Bareman <Radio_Q@mchsi.com> wrote:
> > Hello and sorry for the delay in responding to this thread. I had
almost
> > the same noise and DF problems here and asked the group about it back in
> > November 2005
> > http://lists.contesting.com/archives//html/RFI/2005-11/msg00005.html
> >
> > In my case, with the bands being so dead, I just ignored it as the owner
of
> > the house is a bit of a 'weird dude' so I chose not to confront him
without
> > some more suspicions of what I might be looking for.
> >
> > Fortunately for me, something changed and I have not had the noise for
> > several months now.
> >
> > I guess the bottom line to my message is that 1) keep walking around and
you
> > will likely find it within a block or so of your qth. 2) Look for coax
> > coming out of his telephone network box (DSL ?) 3) If you have a 'nice
> > neighbor' and are able to figure it out, I know the list would love to
hear
> > what you found!!
> >
> > 73's
> >
> > Jim K5QQ
> >
> >
> > -----Original Message-----
> > From: rfi-bounces@contesting.com [mailto:rfi-bounces@contesting.com] On
> > Behalf Of Kelly Johnson
> > Sent: Monday, October 02, 2006 6:57 PM
> > To: rfi@contesting.com
> > Subject: [RFI] DFing an HF RFI source
> >
> > I have an RFI source in my neighborhood that I'd like to track down,
> > but could use some advice.
> >
> > The noise source sounds like a "click" or small burst of energy at
> > approximately 1Hz. In other words, I hear a burst of RFI a little
> > faster than once per second. It seems to be relatively narrow band.
> > I don't hear it below 17 meters. It is strongest on 17 meters, but I
> > can sometimes hear it on 15 meters and maybe even 10. I've never
> > heard it above that. I have DF'd the general direction using my tower
> > mounted HF yagi and the RFI peaks at about S7 or S8 on 17 meters which
> > is fairly strong, however I can't hear it when I walk the neighborhood
> > in that direction with my FT-817 and a whip. I obviously can't carry
> > a 17 meter yagi around the neighborhood. What other decent antenna
> > can I use to DF something doesn't appear to be broadband enough reach
> > into the VHF region?
> >
> > FYI - The strength of this noise source varies from day-to-day and
> > some days I don't hear it at all, but it's there most of the time.
> > _______________________________________________
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> >
> >
>
>
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> End of RFI Digest, Vol 46, Issue 6
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