How do GPS tracking devices work?
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From: Fester Bestertester on 15 May 2010 01:40 Specifically, how do they transmit if they are, for example, inside a shipping container? Is there a hole drilled for an antenna? Or a fiberglas patch made to replace some of the steel top or side? Thanks.
From: Sjouke Burry on 15 May 2010 01:48 Fester Bestertester wrote: > Specifically, how do they transmit if they are, for example, inside a > shipping container? > > Is there a hole drilled for an antenna? Or a fiberglas patch made to replace > some of the steel top or side? > > Thanks. > The antenna must be able to look outside at a big slice of the sky, or the device wont work.
From: Greegor on 15 May 2010 03:07 How does the implant in Green Xenon's head work? Does it have a wire tail that acts as an antenna? Is it just under the scalp?
From: WarmUnderbelly on 15 May 2010 05:41 On Fri, 14 May 2010 22:40:31 -0700, Fester Bestertester <fbt(a)fbt.net> wrote: >Specifically, how do they transmit if they are, for example, inside a >shipping container? > >Is there a hole drilled for an antenna? Or a fiberglas patch made to replace >some of the steel top or side? > >Thanks. They do not "transmit" at all.
From: hamilton on 15 May 2010 08:47
On 5/15/2010 3:41 AM, WarmUnderbelly wrote: > On Fri, 14 May 2010 22:40:31 -0700, Fester Bestertester<fbt(a)fbt.net> > wrote: > >> Specifically, how do they transmit if they are, for example, inside a >> shipping container? >> >> Is there a hole drilled for an antenna? Or a fiberglas patch made to replace >> some of the steel top or side? >> >> Thanks. > > > They do not "transmit" at all. GPS _receivers_ do not transmit. GPS _trackers_ may transmit. GPS Fleet Trackers do transmit, depends an which country on how they transmit. Some use cell phones, some use direct wireless transmitters. hamilton |