Selecting An Antenna Site - Motorola Cleartone CM5000 Installation Manual

INSTALLATION

Selecting an Antenna Site

1. Install the vehicle antenna external to the vehicle and in accordance with:
a. The requirements of the antenna manufacturer/supplier
b. The requirements of the vehicle manufacturer
2. The best mounting location for the antenna is in the center of a large, flat conductive surface.
In almost all vehicles, mounting the antenna in the center of the roof will satisfy these require-
ments. A good alternate location is in the center of the trunk lid. If you use the trunk lid, ensure
that the trunk lid is grounded by connecting grounding straps between the trunk lid and the
vehicle chassis.
3. Ensure the antenna cable can be easily routed to the radio. Ensure that the antenna cable is
routed separately and not in parallel to any other vehicle wiring or mobile radio cable wiring.
4. Check the antenna location for any electrical interference according to vehicle manufacturer
requirements
5. Make sure the mobile radio antenna is installed at least 30 centimeters (1 foot) away from any
other antenna on the vehicle..
6. Motorola offers a glass-mount antenna as an accessory. This antenna should be placed as
high as possible on the vehicle. Ensure that a rear-window defogger element does not touch
the inductive "button" on the mounting foot of the antenna.
7. The CM5000 mobile terminal has a GPS board. If a GPS or combined TETRA/GPS antenna
is used, make sure that the antenna has a clear view to the sky and that the antenna base
which carries the GPS receiver is not covered with any metallic or radio frequency absorbing
material.
CM5000 TETRA Mobile Repeater/Gateway Installation Manual
The distance between Tetra CM5000 and an analogue
radio antennas should be at least 3m.
Any two metal pieces rubbing against each other (such
as seat springs, shift levers, trunk and hood lids, exhaust
pipes, etc.) in close proximity to the antenna can cause
severe receiver interference.
Figure 19
47