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English
Once GPS is enabled, the radio displays the GPS icon on
the screen. The dispatcher can always request the system
to determine the real-time location coordinates of the radio.
GPS Operation
The GPS technology uses radio signals from earth orbiting
satellites to establish location coordinates. Therefore,
maximizing your view of unobstructed sky is essential for
optimum performance.
Where adequate signals from multiple satellites are not
available (usually because you cannot establish a view of a
wide area of the sky), the GPS feature of your radio will not
work. Such situations include but are not limited to:
•
Underground locations
•
Inside buildings, trains, or covered vehicles
•
Under any metal, or concrete roof, or structure
•
Between tall buildings or under dense tree-cover
•
In temperature extremes outside the operating limits of
your radio
Even where location information can be calculated in such
situations, it may take longer to do so, and your location
estimate may not be as accurate. Therefore, in any
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emergency situation, always report your location to your
dispatcher.
Keep in mind that the accuracy of the location information
and the time it takes to obtain it varies depending upon
circumstances, particularly the ability to receive signals
from an adequate number of satellites.
NOTE:
Even where adequate signals from multiple
satellites are available, your GPS feature only
provides an approximate location, usually within 10
meters from your actual location, but sometimes
farther away.
The satellites used by the GPS feature are controlled by
the U.S. government and are subject to changes
implemented in accordance with the Department of
Defense GPS user policy and the Federal Radio Navigation
Plan. These changes may affect the performance of the
GPS feature on your radio.
GPS Performance Enhancement
Sometimes, the GPS feature may be unable to complete a
location calculation successfully. You then see a message
indicating that your radio cannot connect to enough visible
satellites.
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