[time-nuts] Boeing 787 GPS reception trouble

Said Jackson saidjack at aol.com
Mon Jun 2 16:33:36 UTC 2014


Wonderful. It also means cell phones will crank up their power searching for a signal, and the passengers are sitting inside a microwave oven since the RF energy can't escape.

Thankfully there are alternative ways to fly.

Bye,
Said

Sent From iPhone

On Jun 2, 2014, at 8:45, Chris Albertson <albertson.chris at gmail.com> wrote:

> On Mon, Jun 2, 2014 at 1:55 AM, Tom Van Baak <tvb at leapsecond.com> wrote:
> 
>> 
>> But last week I flew the new composite Boeing 787 Dreamliner and noticed
>> something quite different. From the second I entered the plane, I lost both
>> cell and GPS reception. It didn't matter how close I was to a window or
>> not.
> 
> 
> I bet this is nothing to do with carbon fiber vs. aluminum skin.  Both
> would have to be conductive.  I bet it's the metal film on the windows.
> The metal skin of the older planes would have been a perfect shield but
> the windows let the signals in.  But on the new plane the windows have a
> conductive metal film.  So I bet the difference is entirely because of the
> change in window design.
> 
> Even in buildings some "energy saving" windows have coatings that are
> conductive and don't allow GPS to pass.
> -- 
> 
> Chris Albertson
> Redondo Beach, California
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