Well, the phones on plains are close to but not on the same freqs as
cellular, and like I said before with cellular your phone will roam all
over the place at 20000 feet if it can with 1000 feet in a sky
scraper.  Also, the airline cell phones are also digital, but I'm not sure
on the modulation.





On Mon, 14 Jan 2002, Walt Smith wrote:

> That's always been the rule.  They're much more stringent during takeoffs
> and landings than while in routine flight.  It's only a guess, but I think
> this is because the spacing of planes is much more critical at these times,
> so there isn't as much time to ask for a retransmission of a radio contact
> between ground and plane if one is garbled by on-board consumer electronic
> gear.
>
> BTW, as a matter of general information, the telephones that are used in
> commercial aircraft (the ones you put your credit card in) aren't "standard"
> cell phones, or so I've been told.  They use different frequencies and the
> system has been specifically designed not to conflict with avionics.  The
> statement that it's only a money issue simply isn't the case ... you're not
> forbidden to use your cell phone merely because they want the money from use
> of the installed system; the two systems aren't the same and the one has
> been designed specifically for use in commercial aircraft.
>
> --
>  Walt Smith - Raleigh, NC
>  [log in to unmask]
>