On 21 Mar 2024 at 14:58, Chuck Gooden wrote:
> 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
OK, and thanks.
At this point, it is looking as though it is either in my own home, or very
nearby.
First thing I am going to do is to check harmoically related frequencies. Due
to the signal
strength, I suspect I won't hear any.
Then to fire up the radio on a battery. It has a DC supply built ini and the
receiver is all
solid-state so the current needed is only about 1.4 amps.
I have another rig, a Yaesu FT-890, which I could power with a battery.
Also, I do own a very capablie but old DF unit: a Stoddart NM-20 with all
accessories. It is
cumbersome but works very well. I have used it in the past and was pleased with
its
performance.
Thanks for the suggestions.
Ken W7EKB
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