[RFI] Signals on 160

[David Robbins]

The only thing you can really tell from that type of display is that it is
very narrow and repeating up the band... the very narrow part tells you it
is probably not a cheap power supply, grow light, battery charger, or
something like that, it is a clean stable clock like you would see in a
computer, monitor, tv, router, etc... those are normally relatively low
power so unless it is coupled to a power line or gets on the house ground
they don't radiate very far.

David Robbins K1TTT
e-mail: mailto:k1ttt at arrl.net
web: http://wiki.k1ttt.net
AR-Cluster node: 145.69MHz or telnet://k1ttt.net:7373



-----Original Message-----
From: RFI [mailto:rfi-bounces at contesting.com] On Behalf Of Gary Smith
Sent: Sunday, October 28, 2018 17:32
To: rfi at contesting.com
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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