Answer Description
Line-of-site wireless, utilizing microwave dishes is a reliable and high-bandwidth solution to establish connectivity between nearby facilities. While carrier pigeons have been known to have excellent bandwidth and data-transfer rate when a 4TB drive is strapped to their legs, nobody likes to feed them.
Wikipedia
Line-of-sight propagation is a characteristic of electromagnetic radiation or acoustic wave propagation which means waves travel in a direct path from the source to the receiver Electromagnetic transmission includes light emissions traveling in a straight line The rays or waves may be diffracted, refracted, reflected, or absorbed by the atmosphere and obstructions with material and generally cannot travel over the horizon or behind obstacles In contrast to line-of-sight propagation, at low frequency (below approximately 3 MHz) due to diffraction, radio waves can travel as ground waves, which follow the contour of the Earth This enables AM radio stations to transmit beyond the horizon
Line-of-sight_propagation - Wikipedia, the free encyclopedia