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Groups > comp.sys.raspberry-pi > #9799
| From | Martin Gregorie <martin@address-in-sig.invalid> |
|---|---|
| Newsgroups | comp.sys.raspberry-pi |
| Subject | Re: Tracker |
| Date | 2015-10-12 16:38 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <mvgnli$lmb$1@dont-email.me> (permalink) |
| References | <fe90551155.Alan.Adams@iyonix.adamshome.org.uk> <ov6n1bdqh9m3l7gv2j9u0tnghqrqvtch7g@4ax.com> |
On Mon, 12 Oct 2015 08:12:11 -0400, Dennis Lee Bieber wrote: > SMS implies using the cell-phone network, and those > also take a few minutes to fully negotiate a connection from a warm > start. > How high the thing being tracked will fly and where in the world it will do its flying, there may be a problem with cell-phone coverage. For instance, in the flatter parts of the UK the phone base stations have distinctly pancake-like coverage patterns. I've sat over the centre of Huntingdon at 3000ft, going slowly up in a nice thermal, and was unable to get any phone signal at all. The HAB crowd all use lightweight, narrow-band kit in ham bands for telemetry and tracking. -- martin@ | Martin Gregorie gregorie. | Essex, UK org |
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Tracker Alan Adams <alan@adamshome.org.uk> - 2015-10-12 10:20 +0100
Re: Tracker Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2015-10-12 08:12 -0400
Re: Tracker Martin Gregorie <martin@address-in-sig.invalid> - 2015-10-12 16:38 +0000
Re: Tracker Martin Gregorie <martin@address-in-sig.invalid> - 2015-10-12 12:18 +0000
Re: Tracker Alan Adams <alan@adamshome.org.uk> - 2015-10-12 13:50 +0100
Re: Tracker ray carter <ray@zianet.com> - 2015-10-12 14:10 +0000
Re: Tracker Martin Gregorie <martin@address-in-sig.invalid> - 2015-10-12 17:23 +0000
Re: Tracker Alan Adams <alan@adamshome.org.uk> - 2015-10-12 18:41 +0100
Re: Tracker Martin Gregorie <martin@address-in-sig.invalid> - 2015-10-12 19:15 +0000
Re: Tracker Alan Adams <alan@adamshome.org.uk> - 2015-10-12 21:02 +0100
Re: Tracker mm0fmf <none@mailinator.com> - 2015-10-12 21:46 +0100
Re: Tracker Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2015-10-12 20:12 -0400
Re: Tracker dave <dave@cyw.uklinux.net> - 2015-10-13 09:59 +0100
Re: Tracker mm0fmf <none@mailinator.com> - 2015-10-13 19:26 +0100
Re: Tracker The Natural Philosopher <tnp@invalid.invalid> - 2015-10-12 19:24 +0100
Re: Tracker franssoa <franssoa@email.invalid> - 2015-10-13 14:55 +0200
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