Well, that's true, but that is why we use dishes to direct the signal: https://en.m.wikipedia.org/wiki/Parabolic_antenna https://en.m.wikipedia.org/wiki/Parabo

Well, that's true, but that is why we use dishes to direct the signal: https://en.m.wikipedia.org/wiki/Parabolic_antenna https://en.m.wikipedia.org/wiki/Parabolic_antenna I think we generally believe that the dishes are used just for receivers but they are also used in directing transmitters. In fact, there are also heavy regulations for high-speed long distance directed microwave antennas to not spread the signal too broadly: https://www.fcc.gov/Bureaus/Engineering_Technology/Orders/1997/fcc97001.pdf https://www.fcc.gov/Bureaus/Engineering_Technology/Orders/19...