== == http://en.wikipedia.org/wiki/GPS#Navigation_signals
That might help
GPS satellites transmit on two primary frequencies; band L1 is 1.57542 GHz, and band L2 is 1.22760 GHz. The uplink frequency is restricted and/or classified information.
Once you've put the GPS stand (or car dock) on the windshield or the pad put the lever down on the GPS stand.
Yes GPS tracking can still pick up signals in remote areas however they may not show a real time display as it would when you are in a more populated area. Most GPS tracking in remote areas is displayed through a satellite up-link and can take time to send and receive images from that up-link location.
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There are a few models to choose from when you are looking to purchase an iGolf gps. The prices can range from $79.99 up to $499.99. The following is a link to the iGolf website, which has a variety of gps systems to choose from, http://www.igolf.com/store/view_all.html?page=6
it is so called because the gsm antena throw the signal from up to mobile so it is caled down link
The best GPS company out there is probably Magellan. To keep your GPS up to date, you must update the maps annually. This way you can view new roads and roads that have been closed down.
You need to click the cars on the wall so that the headlights are pointed as this: Up Up Down Up Down Down Check out the related link for a video guide showing how this can be done.
There is no way to solve the problem. Because of the high power of the CB transmitter and the low power of the satellite signals, the CB signal clips the GPS receiver, and it can even damage your GPS. The CB and the GPS unit work on entirely different frequencies, to be sure, but the fact that a several watt transmitter of any kind is right on top of a GPS unit can hammer the GPS. There is no way to "limit" the radiated power of the CB (if you still want it to work) so that it won't affect the GPS.
Click the cars so the headlights are pointing as follows (from left) Up Up Down Up Down Down Check the related link for a video guide showing how this is done.
In satellite communication, up link refers to the signal traveling up to the satellite while down link refers to the signal coming from the satellite down to earth.
This is done to avoid crosstalk. If, for example the up and down -links were on the same frequency, it would work much like a walkie-talkie, meaning only one person could send, and one receive, at any given point in time. By giving each direction its own carrier wave, it allows both deviced to send and receive simultaneously, which greatly speeds communication.