SDR Scanner Listens To Everything

In the old days, scanners would listen to a bunch of channels in a round-robin fashion. If a signal breaks the noise reduction, the scanner stops and the scan resumes after a few seconds of inactivity. But with modern SDRs, you don’t have to listen to one channel at a time. You can listen to all of them. [Tech Minds] shows RTL-SDR scanner on Linux to record up to 20 MHz of range simultaneously. It records all the channels in the band we are interested in. The actual project is underway GitHub.

Once recorded, you can use a web interface to listen to the channels and see some statistics about them. [Tech Minds] I tried to record aircraft traffic. It works, but the program doesn’t yet know how to demodulate AM, so if you want to record the entire shortwave band, aircraft, or other AM sources, you’ll have to wait a bit before this software is ready for your use case.

If you need to run the program under Windows as [Tech Minds] do, you can use VMWare Workstation Player to get a free copy of Linux under Windows. We were wondering if WSL version two might work as well, but we don’t know. Once you’ve got Linux running, Docker makes installation easy. Since the interface is a web interface, you could probably run this on a small computer on the network and then access it at your leisure from another computer.

Of course, old-fashioned scanners are often used to listen to police and fire radios. They are all gone stem These days. This is not new ideabut it seemed like a well-packaged solution.

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