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"Dewey M. Sasser" wrote in message
news:ug00h1e41.fsf@sasser.com...
> "Tom Frey" writes:
>
> > How does using a cell phone from the air jam up ground systems? Is this
> > something that is really policed? Although I never have personally,
several
> > people tell me they use their cell phones from private aircraft all the
> > time.
>
> My understanding is that cell phone frequencies are line of sight.
> Therefore, increase altitude and you increase the towers within range.

Which way are the antennas looking Dewey?

> Youre also moving a bit faster in an aircraft, which puts more
> handoff load on the system. (Dont know if this last really matters).

It was once a large problem, due to the system operator having to manually
reset the hung cells.

> Since frequencies are reused over fairly small distances, I imagine
> you could cause interference over quite a range.

This problem was solved by Mc Caw, many years ago.

John

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