3 ms·
Yeah, was going to say something similar. UHF/VHF don't have "line of sight" but if I've got a hill between me and someone else I'm sure as hell going to have a
by vvanders 10y ago
Yeah, was going to say something similar. UHF/VHF don't have "line of sight" but if I've got a hill between me and someone else I'm sure as hell going to have a hard time hearing him.
They put repeaters up on tall areas for that reason. Same with cell towers, yes you can get through non-dense material but there's still a signal loss associated with it.
- niftich 10y agoThe effect detailed in this comment and its parent is the Fresnel Zone [1], which isn't quite direct, human intuition 'line-of-sight', but that concept applied to RF waves. Essentially, any object intruding into a blimp-shaped region between the receiver and the transmitter has the potential to mess things up, and is corrected by having a payload in the signal that's tolerant or self-correcting of errors. [1] https://en.wikipedia.org/wiki/Fresnel_zone https://en.wikipedia.org/wiki/Fresnel_zone