tag:blogger.com,1999:blog-173959252222736577.post195981936344473204..comments2023-10-24T04:44:19.608-05:00Comments on The Aerospace and Rocketry Blog: Bayourat Rocketry Tests Realtime GPS Tracking DeviceWhitney Richardhttp://www.blogger.com/profile/10924123383657436729noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-173959252222736577.post-5677329273574627382013-04-18T09:25:18.231-05:002013-04-18T09:25:18.231-05:00Thanks so much for sharing this. We have been usin...Thanks so much for sharing this. We have been using a <a href="http://www.spyassociates.com/real-time-tracking-c-294_130.html" rel="nofollow">Real Time GPS Tracking</a> system at my work to monitor all of the trucks that we are sending out on the roads. It has been working great so far and hope it will in the long run.Anonymoushttps://www.blogger.com/profile/02391288981729587704noreply@blogger.comtag:blogger.com,1999:blog-173959252222736577.post-58883357629109453172009-10-02T10:28:31.215-05:002009-10-02T10:28:31.215-05:00at 1km distance to horizon is 114km. Sorry.at 1km distance to horizon is 114km. Sorry.Drew458https://www.blogger.com/profile/06341000857825684477noreply@blogger.comtag:blogger.com,1999:blog-173959252222736577.post-2147183154853274142009-10-02T10:27:24.846-05:002009-10-02T10:27:24.846-05:00Well, since cell phone coverage is line of sight, ...Well, since cell phone coverage is line of sight, the higher your rocket goes the better I'd think. Though my guess is that once it gets beyond half a km up you might be overwhelmed with signals - distance to horizon is SQRT(13h) where h is meters, giving you a horizon distance of 114km. That's also a radius, so all the cell towers within that circle should be visible to your cellphone. πR^2 where R=114km covers a lot of area!<br /><br />you can also Google up cell phone dead areas. Here's one link, there are others:<br />http://www.cellreception.com/deadspots/louisiana/page4.html<br /><br />Good luck!Drew458https://www.blogger.com/profile/06341000857825684477noreply@blogger.com