re TSA overreaction to Delta incident

[Dave Farber <dave () farber net>]

Begin forwarded message:

> From: Ole Jacobsen <ole () cisco com>
> Date: December 26, 2009 4:48:30 PM EST
> To: Dave Farber <dave () farber net>
> Subject: Re: [IP] re TSA overreaction to Delta incident
> Reply-To: Ole Jacobsen <ole () cisco com>

> For IP:
>
> Amy Wohl said (about the Kindle):
>
> "All they would have to do is tell me to turn its wireless
> feature off."
>
> Sorry, no. ALL electronic devices (at least consumer grade ones)
> emit some sort of RF that (allegedly) "could interfere with the
> aircraft's sensitive navigation system." United will not even let
> you use your own noise cancelling headphones even though they provide
> similar ones (but those have been "certified" for aircraft use).
>
> Of course, any radio RECEIVER is also a transmitter (superheterodyne
> receivers---and most are---rely on a local RF oscillator). Thus the
> notion that "you can use X so long as its transmit function is off"
> is also bogus, what they really should say is "so long as the entire
> radio section can be powered down".
>
> We could argue about the wisdom of any of these rules, particularly
> given that even your average wristwatch emits some RF and nobody has
> ever been asked to turn that off. We could further discuss the wisdom
> of flying in an aircraft whose navigation system is allegedly so
> sensitive as to be suscepible to the RF emitted from the iPod in seat
> 22B, but the rules remain. (And if you want to read about this in more
> detail, dig out a issue of IEEE Spectrum from circa 10 years ago. I
> am, as so many others, stuck in an airport without access to the
> relevant library shelf ;-)
>
> Happy New Year
>
> Ole
>
>
>
> Ole J. Jacobsen
> Editor and Publisher,  The Internet Protocol Journal
> Cisco Systems
> Tel: +1 408-527-8972   Mobile: +1 415-370-4628
> E-mail: ole () cisco com  URL: http://www.cisco.com/ipj



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