GPS satellites have broadcast a "numbers station" in their public signals

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For 19 years, GPS satellites have secretly broadcast a “numbers station” in their public signals. We decoded 12M messages: a 2011 flash where 31 of 32 satellites flipped in hours, “ghost” substrings repeating years apart, and a “TEXT” prefix spreading now. https://lsc-pagepro.mydigitalpublication.com/publication/?i=865273&p=62&view=issueViewer

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