On 21 Mar 2024 at 23:08, Jim Brown wrote:
> On 3/21/2024 12:58 PM, 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.
>
> The HDSDR suggestion is a very good one. Using a wide spectrum and
> waterfall may show something related on other frequencies. I've seen
> signals a bit like this that strongly suggest that they're leakage
> from some sort of electronic system. I've never bothered to try to
> track them down. Any signal that's stable (not drifting) and with no
> FM noise modulation is very likely coming from a microprocessor.
>
> NK7Z has done some excellent work and developed some very useful
> procedures using an SDR as part of chasing RFI.
>
> > If you can turn off all of your breakers in your house or apartment
> > and run the radio on battery.
>
> Yes, but make sure that there isn't a UPS keeping some stuff on, AND
> causing noise itself. :)
>
> Just curious -- what kind of activity takes place around 7103? The
> only times I've tuned around there have been activity stretched up to
> there in a CW or RTTY contest.
>
> 73, Jim K9YC
I connect with a digital relay station on 7101.0 kHz at least twice each day to
send and
receive radiogram traffic. We are using VARA. That signal does not interfere
with our
operations. I simply find it annoying.
Thanks for the suggestions.
I'll track it down asap.
Ken W7EKB
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