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☕ David Antoine Thanks for the link !
Eric No problem, was the SOS on that frequency still broadcasting when you checked?
Mark Dain Thanks for posting this link, I've spent at-least an hour playing around with this! Gives me something to do as I'm really ill right now with the flu. There's some weird stuff on this, if you checkout 26950 kHz FM, there's a somewhat regular pulse/beeping (tagged "pager"?). The sound can actually be heard further up and down the spectrum; you can hear it at 26850 kHz and 27000 kHz. It makes a very distinctive pattern in the waterfall too, sometimes also adds a line. I wish I could decode this
Eric en.m.wikipedia.org... Likely referring to the stations operating these