Owner`s manual

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The above symbolize data transfer speeds. They have been listed from the fastest to
the slowest. The speed of the data transfer depends on a couple of factors. Including
your operator.
GPS receiver basics
Like a cell phone, a GPS receiver relies on radio waves. But instead of using towers
on the ground it communicate with satellites that orbit the Earth. There are currently
27 GPS satellites in orbit – 24 are in active use and 3 act as a backup in case
another satellites fails.
In order to determine your location, a GPS receiver has to
determine:
 The locations of at least three satellites above you
 Where you are in relation to those satellites
The receiver then uses trilateration to determine your
exact location. Basically, it draws a sphere around each of
three satellites it can locate. These three spheres intersect
in two points – one is in space, and one is on the ground.
The point on the ground at which the three spheres
intersect is your location...
Warning: A GPS receiver has to have a clear line of sight
to the satellite to operate, so dense tree cover and
buildings can keep it from getting a fix on your location.
Use the GPS based services outdoors for best results.
GPS positioning can take up to 5 minutes.
Turn on GPS touching the GPS icon so that it lights up blue, like on the picture on the
right.
GPS basics