[LARC-CQ] Oh, the Noise!

[John Sherwood]

Does your neighbor have a pool pump running on a timer? Sounds like
something near you on a timer.

W4JFS John

On Tue, May 24, 2022 at 3:49 PM Eric Clark via CQ <cq at lists.lakelandarc.org>
wrote:

> Hey!  I need your help to identify a noise source.  I’m experiencing so
> much QRM that I can’t get on the air.
>
> About a month-or-so ago, I noticed a very loud buzzing sound on my AM
> radio.  The next time I turned on my rig, I discovered that the noise
> extended not just across the AM Broadcast band, but all the way through HF
> and into the VHF spectrum. It’s VERY loud.  I’m attaching an image of our
> IC-7300 showing the 20m band.  It’s 20db over S9 there and just as loud
> everywhere I can check.  It doesn’t matter which radio I use, the noise is
> there.  So, it’s not in a power supply.  Yesterday, I used my battery
> powered AM radio and began flipping breakers to see if it would go away.  I
> turned them all off, including the master breaker and the noise never
> stopped.
>
> I’m attaching a photo of the IC-7300 showing the noise spectrum as well as
> a short recording that I made.  It’s 50 seconds long.  I started with my
> radio on my dummy load and 2 seconds after the recording starts, I move it
> to an outside antenna so you can hear how loud it is.
>
>
>
>
> The noise s so loud that I can’t really localize it and can’t tell if it
> is coming off of a nearby power pole or from a neighbor’s house.
>
> It’ son 24/7.  However, by accident, I happened t catch a break.  This
> past Sunday morning at about 11:30am, the noise was gone.  I turned on my
> HF rig and verified that it was gone.  I could hear signals again!  I
> checked several bands to be certain that it was gone.  But before I could
> celebrate, at exactly 12:00 noon, ht suddenly came back like someone
> flipped on a switch. It’s been there every time I’ve checked since.
>
> Any ideas?
>
> Thanks!  & 73.
> Eric
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