8M093X01 R1.0 40
Antenna Installation
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
Cautionary Notes & Considerations
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.
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