[Elecraft] RFI issues

[Michael Walker]

HI Andreas

Sorry to hear about your noise.

I doubt your noise is related to digital TV as that is a long way away in
the frequency world.  It is pretty common to assume that it is not on your
own property.  I saw one guy who said the same thing and then found out a
year later it was his new dryer that was noisy even when they were not
using it.

I would not be surprised that most of your HF noise is within your own
property unless you did some significant research by  holding an AM radio
near each and every power cube or charger for phones, etc.  There are not
too many that are quiet.

I use my KX2 to find most of my HF noise issues and I must have tossed out
15 bad chargers.  The ones I could not just toss away, I had to add Mix 31
chokes to.

When you moved into your new house did you replace all the light bulbs with
LED bulbs?  They can be noisy.

If you haven't taken the time to do an indepth study on your own house, you
should.  You might be surprised.  I would plan an all day exercise when
everyone is out of the house.

Mike va3mw


On Tue, Feb 18, 2020 at 2:25 PM Dave Cole <dave at nk7z.net> wrote:

> Hi,
>
> I might suspect something else...
>
> Have you done a power off test of your home yet?
>
> 73, and thanks,
> Dave (NK7Z)
> https://www.nk7z.net
> ARRL Volunteer Examiner
> ARRL Technical Specialist
> ARRL Asst. Director, NW Division, Technical Resources
>
> On 2/18/20 8:29 AM, Andreas Wachter via Elecraft wrote:
> > I live about 1.6 miles from some tall antenna towers broadcasting
> digital TV (KBCB) at 208 kW ERP on channel 19 (500 - 506 MHz) and on FM
> (KWPZ-FM) at 63 kW ERP on 106.5MHz - according to FCC info on KBCB and
> KWPZ-FM. Ever since I moved to this QTH a few months ago, I am unable to
> use my K3: solid S9+ noise on all bands using a makeshift dipole strung up
> on some trees outside my house. I’ve tried to locate the source of the RFI
> within my home but so far have been unable to locate any RFI emanating from
> within my home. Could it be that the TV/FM stations antenna towers, which
> are within direct line of sight from my house, might be responsible for the
> RFI?
> >
> > 73, Andreas
> >
> > K6AKW
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