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Chapter 6
External Equipment Installation
6.1
Vehicle Antenna Installation
6.1.1
Mobile Radio Operation and EME Exposure
To assure optimal radio performance and that human exposure to radio frequency electromagnetic
energy is within the guidelines referenced in this document, transmit only when people outside the
vehicle are at least the minimum recommended distance (90 cm or 3 ft) from the body of a vehicle with
a properly installed, externally mounted antenna.
6.1.2
Selecting an Antenna Site
When and where to use: To assure optimum performance and compliance with RF Energy Safety
standards, these antenna installation guidelines and instructions are limited to metal-body vehicles with
appropriate ground planes and take into account the potential exposure of back seat passengers and
bystanders outside the vehicle.
Procedure:
1 Install the vehicle antenna external to the vehicle and in accordance with:
•
The requirements of the antenna manufacturer/supplier
•
The requirements of the vehicle manufacturer
2 Select an Antenna Site/Location on a Metal Body Vehicle
1 External installation – Check the requirements of the antenna supplier and install the vehicle
antenna external to a metal body vehicle in accordance with those requirements.
2 Roof top – For optimum performance and compliance with RF Energy Safety standards,
mount the antenna in the center area of the roof.
3 Trunk lid – On some vehicles with clearly defined, flat trunk lids, the antennas of some radio
models can also be mounted on the center area of the trunk lid. For vehicles without clearly
defined, flat trunk lids (such as hatchback autos, sports utility vehicles, and pick-up trucks),
mount the antenna in the center area of the roof. The following restrictions apply when
mounting the antenna on the trunk lid. Be sure that the distance from the antenna location on
the trunk lid is at least 90 cm (36 inches) from the front surface of the rear seat-back to
assure compliance with RF Energy Safety standards. Ensure that the trunk lid is grounded by
connecting grounding straps between the trunk lid and the vehicle chassis.
CAUTION: If these conditions cannot be satisfied, then mount the antenna on the roof
top.
3 Ensure that the antenna cable can be easily routed to the radio. Route the antenna cable as far
away as possible from any vehicle electronic control units and associated wiring.
CAUTION: Make sure that your power cable is not placed with the antenna in parallel.
Interference can cause radio to hang.
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68015000181-LB
External Equipment Installation
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