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Antenna Installation
ANTENNA ISOLATION (IN-BAND): All DVRS models require 30dB minimum antenna
isolation between the DVR-LX and MSU Antennas in order to ensure interference-free
operation. It is recommended that the MSU in-band antenna is mounted on the roof top of
the vehicle while the DVR-LX antenna is mounted on the trunk.
ANTENNA PORTS: Duplex DVR-LX antenna ports are 50 Ohm mini UHF female and
require antenna with matching 50 Ohm mini UHF male terminations.
ANTENNA SEPARATION: Before starting the installation, inspect the vehicle and
determine how and where to mount the DVRS antennas (one or two connected to the
Mobile Radio and one to the DVR-LX), the DVR-LX components, MSU, Control Head, MSU
accessories. Ensure adequate separation between the MSU antennas and the DVR-LX
antenna, especially in in-band configurations.
RF ENERGY SAFETY: To ensure optimum performance and compliance with RF energy
safety standards, antenna installation guidelines are limited to metal-body vehicles with
appropriate ground planes and consider the potential exposure of back seat passengers
and bystanders outside the vehicle.
Preparation
Any DVRS model requires the use of two or three antennas – one or two connected to
the MSU and one connected to the DVR-LX. For a list of approved DVR-LX antennas,
please refer to
8M093X01 R1.0
Cautionary Notes & Considerations
40
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