Motorola TETRA MTM800, Feature User Manual

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• When your GPS antenna is covered (for example, by your
hand or other object) or facing the ground
• In temperature extremes outside the operating limits of
your terminal
Even where location information can be calculated in such
situations, it may take longer to do so. Therefore, in any
emergency situation, always report your location to your
dispatcher.
Furthermore, please note that even where adequate signals
from multiple satellites are available, your GPS feature will
only provide an approximate location, often within 20 - 100
meters from your actual location.
Enhancing GPS Performance
Sometimes the GPS feature of your terminal may be unable
to complete a location calculation successfully. You will then
see a message indicating that your terminal cannot see
enough visible satellites.
To maximize the ability of your terminal to determine a
location fix please note the following guidelines:
• The GPS feature works best where there is nothing
between the GPS antenna and a large amount of open
sky. If possible, move your vehicle away from tall buildings
and foliage. While performance in a building is improved
by moving closer to windows, glass with certain sun
shielding films may block satellite signals.
• Position your vehicle to enhance reception, giving the
antenna clear access to satellite signals. Signals from
GPS satellites are transmitted to your GPS antenna. Do
not cover the antenna area with your fingers or anything
else.
• Stay in network coverage. Depending on who your service
provider is, the network will provide your terminal with
information that helps determine your location more
quickly and accurately.