Motorola VML750, Installation Manual

Page: 63 / 65

Appendix
C
LTE & LMR Antennas Mounting
Recommendations
This appendix provides procedures for determining the mounting locations for a Public Safety Narrow
Band (PSNB) LMR 700/800MHz antenna and Broad Band (BB) LTE 700MHz antennas.
The following procedures are given:
•
Police patrol vehicle with a PSNB antenna and a standard BB antenna.
•
Bus with a PSNB antenna and a low profile BB antenna
Police Patrol Vehicle Antennas Location Considerations
— Overview
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The antennas mounting location is selected individually for every vehicle before starting the actual
installation process. The following list gives general recommendations for determining the mounting
location of PSNB and BB antennas based on several key considerations:
•
Keep a minimum distance of 7.87” (20 cm) between the LTE [BB] antennas; including
WiFi to any other antenna and any potential bystander (for bystander safely).
• Follow the guidelines in the installation and safety manuals of the LMR
[PSNB] radios with regards to mounting locations and operation of radio in the
presence of bystanders (for bystander safety).
•
Keep a minimum spatial separation of 78” (198 cm) between the PSNB and BB LTE antennas
this separation provides a minimum of 35 dB isolation to reduce interferences.
•
Keep a minimum spatial separation of 36” (91.4 cm) between the two BB LTE (main and
diversity) antennas for potential interference reduction and for optimal Multiple Input Multiple
Output (MIMO) and Maximum Ratio diversity Combining (MRC) performance.
6802988C54-B July 2014
C-1