Shortwave oddity ionospheric Digisonde 17 February 2024 1504 UTC

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=SZTGxCvsAFs

This is a recording of a signal I call the "Grinder" in my log books. It is a digitally modulated ionosonde, or sounder, called a digisonde. An ionosonde i...

shortwave, buzz, buzzer, grinder, ionsonde, digisonde, DPS4D, Lowell, sounder
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