On 2 Jun 2014 10:03, "Tom Van Baak" <[email protected]> wrote:
> Now I have never had a problem with reception in the terminal, walkway, or even while seated inside a plane. I figured the aluminum frame of the plane was thin enough that photons at cell, GPS, and gamma frequencies easily pass through the outer shell or the windows. I do have quite a bit of data on that, having measured the attenuation both in flight tests and on the ground. (I don't trust the latter anyway.) I can't share it unfortunately. But you should be aware of of how the systems in aircraft that allow one to use a phone work. The cellular operators were keen that one could not cause interference on the ground by a phone connecting to many base stations. For this reason the planes incorporate a noise generator that raises the background noise so that the phone cant hear any cell sites on the ground. I would not expect that to be enabled below about 3000 m, but it is quite possible that the noise generator was on. I would not expect it to jam GPS frequencies, but certainly those used by mobile phones. Dave _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
