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To: engineer who wrote (104819)	9/15/2001 1:58:31 PM
From: arun gera	Respond to of 152472

Engineer: What do you think of Aircell's technology (www.aircell.com) for the use of phones on planes? Arun

To: engineer who wrote (104819)	9/15/2001 6:44:20 PM
From: Maurice Winn	Respond to of 152472

<Cellphones cannot be used on a regular basis from a commercial flight EVER. they were not designed for the speed at which a plane flies nor were cell towers and coverages designed for a direct over the top fly over. the physics of it demands that there be fall off in signal and that ground level line of sight be used. Seems like a good idea and it does work somewhat, but it would cause the systems to get really bad call completion> I guess aircraft will just have to continue with Globalstar in that case. Globalstar phones can shrink a lot and the high quality voice means they are the cellphone required for effective use on aircraft. Mq