http://www.buyagpssystem.com/index.php/how-do-gps-systems-work/10/ GPS Systems Tue, 07 Feb 2012 16:42:48 +0000 http://wordpress.org/?v=2.7 hourly 1 http://www.buyagpssystem.com/index.php/how-do-gps-systems-work/10/comment-page-1/#comment-44933 lost in ttranslation Sat, 31 Oct 2009 06:01:20 +0000 http://www.buyagpssystem.com/index.php/how-do-gps-systems-work/10/#comment-44933 Well GPS is US created positioning system( military , and during any war acts US might disable it ) , it uses 3 sats to send and receive signal to determine location . When buying GPS you should pay attention to map support ( make sure that there is your location maps ) , usually services are free , some GPS units can have addition functions ( mp3 , mp4 ) . Main brands are Tom Tom , Garmin , Sony ( some smart phones have build in GPS - Nokia N95 ) Well GPS is US created positioning system( military , and during any war acts US might disable it ) , it uses 3 sats to send and receive signal to determine location . When buying GPS you should pay attention to map support ( make sure that there is your location maps ) , usually services are free , some GPS units can have addition functions ( mp3 , mp4 ) .
Main brands are Tom Tom , Garmin , Sony ( some smart phones have build in GPS - Nokia N95 )

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