Here's two links.
Paulo, different bandwidths do, indeed, have to be considered separately. The problem is they all generate harmonics capable of interferring with all bandwidths.
In the last two months there have been at least four published reports concerning Interference caused by PED's and Cell Phones.
With the GPS signal being weak enough to require an antenna installed Op Amp so the signal is usable at the receiver sensor I wonder that anyone would question the possibility of passenger induced interference or want to argue turning the devices off at least on approach.
Heaven forbid we should interfere with the rights of a movie viewing, laptop game playing, or last minute rental car arranging passenger in the interests of flight safety.
Hey, let's bring back free-for-all smoking flights. It does make the pressurization leaks easier to find from the outside.
http://www.caa.co.uk/publications/pu...ils.asp?id=751
If you have a subscription to AIR SAFETY WEEK here's a bunch more:
http://search.pbimedia.com/search97c...63&SEARCH.y=21