Hi Gary,
Of course, the first thing you should do is turn off all of the AC
power -- including UPSs -- in your own home to determine if any
of the RFI disappears.
I don't think anyone will be doing you a favor by helping you guess
what these signals might be. By far the best way to determine what
they are is to build -- or if necessary buy -- a simple small loop antenna.
A loop antenna has a deep, narrow azimuth null off of each side of
the antenna that allows to quickly identify the RFI source.
Good luck!
73
Frank
W3LPL
----- Original Message -----
From: "Gary Smith" <Gary@ka1j.com>
To: rfi@contesting.com
Sent: Sunday, October 28, 2018 5:31:51 PM
Subject: [RFI] Signals on 160
I've been encountering some strong signals
on 160 recently. I made some approximate
guesses at the frequency using the P3
markers to measure them. Here's the
signals at 1:20PM local time with a center
frequency of 1.848.67
The main signals are about 42 KHz apart.
The lesser spikes in-between appear at
somewhat regular intervals.
http://doctorgary.net/spikes-on-p3.jpg
Here's the measured values of the main
signals
http://doctorgary.net/frequencies.jpg
Any idea what might be the source of
signals spaced like this?
73,
Gary
KA1J
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