My guess is that while MDs and CDs don't "transmit" any signal, they
probably do output a lot of RF interference. I can't work out at which stage
this occurs though. The major problem comes from any oscillator that has
harmonics in the frequency ranges that are used by the plane's control
systems - you'll probably notice that the bans are only on Airbusses. I
would also suspect that these harmonics probably interfere with some of the
short range naavigation equipmemt, hence the ban on electrical device use at
take-off and landing (though that could just be so you don't brain someone
with your laptop iff there's a hard landing...)
andi
> Just wondering...why wouldn't the air crew let me listen to my Md during
> flight? They said no cd's or md's, but certain other elictrical goods were
> OK. That doesn't make sense as md's and cd's do not transmit any signal,
> that I know of, that could interfere with the plans equip.
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