One of the basic principles of the cellular telephone system is that the
same parts of the spectrum can be used by many phones at once. This is
possible only because each cell covers only a limited area. High spots
which cover huge areas are pretty common -- just look at typical
repeater or TV/FM broadcasting locations. But you won't find cell phone
installations there except in very sparsely populated areas, and for
very good reason -- there simply isn't anywhere near enough spectrum
space available to accommodate all the users within range.

Figuring out how to cram a couple of orders of magnitude more users into
the same already-packed and efficiently used spectrum must be one of
those "technological hurdles" yet to be overcome.

But in the meantime, I'm sure Alavi is living quite well off the money
from the naive investors which never seem to be in short supply.

Roy Lewallen, W7EL