[RFI] RFI ID Help Needed

[Christopher Wawak]

I have had trouble with an Arrow small magnetic loop. worked great on VHF,
but even with an external preamp I have major trouble finding HF signal on
an ic705.

 I have had REALLY GOOD results with the DXE flag antenna:
https://www.dxengineering.com/parts/dxe-noiseloop. that with a preamp
worked well to find noise in the 7mhz range.

I know this can be frustrating, but you'll figure out the noise. It's too
weird to ignore.



On Thu, Sep 9, 2021 at 8:21 AM Joe Galicic <galicic at comcast.net> wrote:

> Hi Chris,
>
> I was using my K3 and a small diameter magnetic loop antenna sticking up
> through the sunroof of my car.  I've found noise sources with this setup
> before.
>
> I can hear CW and FT8 signals on the loop but cant hear the RFI "signal"
> on the loop.  I thought this was very odd since the signal is pretty strong
> on my shack radio.
>
> One of my neighbors about .5 miles away has a new solar installation.  I
> drove past that house and it was quiet.
>
> We don't have powered channel markers in the lake.
>
> We do have lots of gulf carts around here so perhaps this is a battery
> charger ?
>
> Thanks,
>
> Joe
> N3HEE
>
> On 09/09/2021 8:02 AM Christopher Wawak <kc2ieb at wawak.org> wrote:
>
>
> Have you considered a start at the hams house? drive towards your house.
> Park car where you begin hearing the wee woos and do your df from there.
>
> Can you tell more about what you experienced when looking around for the
> signal?
>
> 73 kc2ieb chris
>
> On Thu, Sep 9, 2021 at 7:55 AM Joe Galicic < galicic at comcast.net> wrote:
>
> >     Greetings All,
> >
> >     Here is something for all of you RFI sleuths to have some fun with.
> An interesting "signal" has appeared in the last couple of weeks at my QTH.
> >
> >     Clues:
> >
> >     I've eliminated my house.
> >
> >     I've driven around the neighborhood with direction finding gear (K3
> with small magnetic loop antenna) with no luck so far.
> >
> >     A local ham 5 miles away can't hear it.
> >
> >     The "signal" is there 24/7.
> >
> >     It is also on 40 meters.
> >
> >     Any ideas what this could be ?
> >     See video here https://youtu.be/sl050wudAm0
> >
> >     Joe
> >     N3HEE
> >
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