Crimestopper Security Products TN-4003 Manuale Utente

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MOUNTING LOCATION  
Selecting the Antenna Locations  
The Module requires two antennas elements. One antenna is for receiving GPS 
signals from The Navistar GPS satellites. The second antenna is a radio 
transceiver antenna that communicates with the Cellular network. The antenna 
does not require a ground plane to function properly. 
There are two antenna cables in addition to the main power harness that must be 
connected to the TRAKNET, so be sure there is room to access the connectors for 
installation and service. If an exterior installation location is required you will need to 
use the optional antennas designed for exposure to the outside elements. The 
GPS/RF Combo antenna must be mounted flat with the GPS Receiver faced up. 
The ideal location is under the dashboard. It can be placed under the dash pad as 
long as the pad or covering is not metallic or a barrier to the GPS satellite signals. If 
the vehicle window has a solid dark coating around the edge, do not place the GPS 
antenna behind the coating. The GPS signals will travel through the clear glass but 
will be reduced if the window has any metallic coating or tint applied.  
The GPS/RF Combo antenna will work best if it has a clear view to the sky and as 
much of the horizon as possible. Any metallic objects between the antenna and the 
satellites will degrade the signal and reduce