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System Limitations
Although your Navigation System is a highly
sophisticated piece of equipment, you may
find it has certain limitations. The system
uses signals from the Global Positioning
System (GPS) to determine its current
location. The GPS is operated by the U.S.
Department of Defense. The system is
subject to changes that could affect the
accuracy and performance of all GPS
equipment, including your Navigation
System.
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Favorable Reception Areas for GPS Signals
GPS reception is best in open areas, with no trees, tall buildings, or other tall objects that
can interfere with the signal.