John Sessoms wrote: >From: <[EMAIL PROTECTED]> > >> The last time I flew (several years ago but post-9/11), I think >> they asked us to turn off all personal electronics for takeoff >> and landing but said we could turn them back on when the "fasten >> seat belts" sign went out. I thought it was silly but didn't >> mind turning off my phone for those brief periods. > >As it was explained to me; the reason for turning off personal >electronics during take-off and landing is so that in case of an >emergency, instructions from the cabin crew won't get drowned out by >your ipod.
No, it's because of the possibility of radio emissions from your electronics interfering with the plane's on-board systems. Even radio receivers contain local oscillators that have the potential, however remote, of drifting off frequency and jamming some other important frequency. Surprisingly, the worse offenders tend to be portable CD players. They have multiple servo systems that spew out all kinds of RF garbage. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
