I could probably find the answer to this by some research, but I'm too
lazy. :D We have the beginnings of free wifi in our city (Portland),
though it's still spotty, at best, since not all areas of the city are
'wired.' I was thinking about how the nodes only cover about 300'
each, then there's obstacles, interference, etc. Why can't they put up
one big antenna, like radio stations, and pump out 50k watts, or
whatever would be necessary to cover the entire city?