Some time ago,  a major carrier (Delta, TWA, ?) announced a similar
prohibition.  I recall the rationale was that there was a critical frequency
in the laser diode driver circuit.

Several months/years ago,  IEEE Spectrum ran an article on Personal
Electronic Devices in the airborne environment and gave insight into the
deliberations of the Radio Technical Commission for Aeronautics Special
Committee which was looking into the subject and its associated hazards.


Tom

-----Original Message-----
From: Morgan Olsson <mrt@INAME.COM>
To: PICLIST@MITVMA.MIT.EDU <PICLIST@MITVMA.MIT.EDU>
Date: Wednesday 04 February 1998 16:33
Subject: Re: RF Noise


|At 13:12 1998-02-04 EST, you wrote:
|>I was recently on a very long flight from LAX to Seol.   They would let us
|use
|>lap top computers but not CD players.
|>Why would you get more RF from a CD player but not a laptop?
|>
|>Dave
|
|I think this is more a question of audio noise...
|
|Maybe the pilot want the passengers to be able to hear eventual emergency
|information, or "fasten your seatbelts" etc.
|
|/Morgan
|/  Morgan Olsson, MORGANS REGLERTEKNIK, SE-277 35 KIVIK, Sweden \
|\  mrt@iname.com, ph: +46 (0)414 70741; fax +46 (0)414 70331    /
|
|
|