It would be similar to satellite constellations Beyond the horizon, lines of site look into the vast space. Satellites see over the horizon. What you probably

It would be similar to satellite constellations Beyond the horizon, lines of site look into the vast space. Satellites see over the horizon. What you probably want when you want to send better for sending radio signals from one point on the earth's surface to another. I think when the USDoD looked at this, it went acoustic at extremely low frequencies. But that's only from reading Tom Clancy in thirty five years ago. Good luck.