Re: building electronics beacon for survival


AZ Nomad wrote:
On Tue, 19 Dec 2006 10:11:14 -0700, Jim Thompson <To-Email-Use-The-Envelope-Icon@xxxxxxxxxxxxxxx> wrote:

Maybe they have an air-mobile CP relay on the rescue aircraft?

Modern cell phones are required to have GPS capability for 9-1-1
location.
No they don't. They'd be 4 times bigger if they had a GPS
receiver. Perhaps you're thinking of cell tower triangulation.






Around here they offer "track your teenager", so the technology
already exists.

...Jim Thompson

Some cell phones do have GPSs, and the phone isn't any bigger. However,
the law stated that the cellular providers have to be able to locate a
phone. There is no legal requirement for a GPS in the phone.

When I had a phone with GPS, I kept the GPS off except for 911.

.

Relevant Pages

  • Re: building electronics beacon for survival
    ... Maybe they have an air-mobile CP relay on the rescue aircraft? ... They'd be 4 times bigger if they had a GPS ... receiver. ...
    (sci.electronics.design)
  • Re: building electronics beacon for survival
    ... They'd be 4 times bigger if they had a GPS ... There is no legal requirement for a GPS in the phone. ... In the boonies it requires GPS. ... Is AZ Nomad really in AZ ?:-) ...
    (sci.electronics.design)
  • Re: Has anyone tried these GPS phones from Motorola?
    ... >>GPS capable doesn't mean it has a GPS receiver built in... ... > use it's GPS capability as that depends on the network servers and it's ... have nothing of the sort and simply rely on cell tower triangulation ...
    (sci.geo.satellite-nav)
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