You will have to post a lot more details here like a waterfall from
HDSDR or some other SDR receiver if you have one.
If you can turn off all of your breakers in your house or apartment and
run the radio on battery.
Or turnoff all of your breakers EXCEPT the one for the radio. If the
noise is still there run an extension cord to an outlet on a different
breaker. Then turn on that breaker and shut off the break that powered
your radio. If the noise is still there it most likely inside your
house and probably in your ham shack.
Are there other frequencies that you hear the signal on? Try tuning up
and down and see if it repeats. Also be sure to check harmonics above
and below 7103 Khz (ie 3.551, 2,367 mhz and 14,206, 21,309 ect)
I had a Unifi network switch that generated S9 noise level across a lot
of frequencies.
If its not in your house its time to start DFing the signal.
Chuck K9LC
On 3/21/2024 2:24 PM, Kenneth G. Gordon wrote:
Over the past several weeks, I have been hearing a constant, intermittant
signal on a
frequency very close to 7103 kHz.
It is a steady, repeating carrier, sounding like someone is repeatedly and
constantly keying a
CW transmitter on and off.
I have not yet looked at it with a spectrum analyzer, but I am curious if
anyone else here has
noticed this "thing" and if you might have a clue about where it is coming
from,and what,
exactly it might be?
Once in a while the signal will change characteristics for a short while and
sometimes the
length of the dashes will change slightly, but it always reverts to the
relatively short and
continuous intermittant dash.
Ken W7EKB
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