kind of funny , when you search articles related to the FM Signal they found coming from Ganymede they are always quick to point out that Jupiter has long been known for emitting radio frequencies. ... But they don't say anything about Ganymede.. they just deflect it to Jupiter radio waves.... AND.... If it has been long documented .. why the surprise? Why the news article? Because it is out of the ordinary. Not your usual radio signals from space. FM .. Frequency Modulation.. IM not sure that occurs in nature. FM had to be invented.
Yeah frequency modulation isn't something that occurs by accident (inventor killed himself after getting ROBBED by his employer (western electric I think)).
Anyway, any indicators (Modulation itself) clues. is it EXACTLY done like "we" do it? If they could detect something like frequency hopping (Hedy Lamar (Jewish) in WW2 and part of cellular service today!). Surely they've thought of that I imagine, and if they DID find something would keep that from us nobodies (for future exploitation) as nerds do.
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