Hi all, I'm new here. About two hours ago I found FES and I got curious about your theories. They're pretty weird and debateable on some point, but I guess every theory is worth consideration. I've been working in telecommunication for 15 years, particularly in naval communication and positioning systems, and the first question that got in my head was: in the flat earth theory, how does the GPS system work? Also, why do we need ionosphere to send radio signals on the long distance? On a round earth, radio signals - e.g. OTH radars, broadcast signals, ect. - need to 'bounce' on the outer layer of the atmosphere - the ionosphere - in order to reach parts of the earth covered by the earth curvature.