Motorola GM Series Installation Manual page 4

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Mobile Antenna Installation
Install the vehicle antenna external to the vehicle and in accordance with:
a. The requirements of the antenna manufacturer/supplier
b. Instructions in the radio installation manual.
Control Station Operation
When radio equipment is used to operate as a control station, it is important that the antenna be
installed outside the building and away from places where people may be in close proximity.
NOTE Refer to Table 1 for rated power and minimum distance values for transmitting
antennas.
INSTALLATION WARNINGS
WARNING: Disruption of the anti-skid/anti-lock braking system by the radio transmitter may
!
result in unexpected vehicle motion.
For vehicles with electronic anti-lock/anti-skid brakes, Motorola recommends the following radio
installation precautions and vehicle braking system test procedures to ensure that the radio, when
transmitting, does not interfere with the operation of the vehicle braking system. Refer to your vehicle
service manual for details of your vehicle's braking system, or contact your dealer directly.
Installation Precautions:
1. Always provide as much distance as possible between the braking modulator unit and the radio,
the radio antenna, and associated transmission line. Before installing the radio, determine the
location of the braking modulator unit in the vehicle. Depending on the make and model of the
vehicle, the braking modulator unit may be located in the trunk, under the dashboard, in the
engine compartment, or in some other cargo area. If you cannot determine the location of the
braking modulator unit, refer to the vehicle service manual or contact a dealer for the particular
make of the vehicle.
2. If the braking modular unit is located on the left side of the vehicle, install the radio on the right
side of the vehicle, and conversely.
3. Route all radio wiring, including the antenna transmission line, as far away as possible from the
braking modular unit and associated braking system wiring.
4. Never activate the radio transmitter while the vehicle is in motion and the vehicle trunk lid is open.
Braking System Tests:
Be sure the following vehicle testing is done in an isolated area. The following procedure checks for
the most common types of interference that may be caused by a radio transmitter to vehicle braking
system:
1. Run the vehicle engine at idle speed and set the vehicle transmission selector to PARK. Release
the brake pedal completely and key the radio transmitter. While NOT speaking into the
microphone, verify that there are no unusual effects (visual or audible) to the vehicle lights, or
other electrical equipment and accessories.
2. Repeat Step 1, except do so while speaking into the microphone.
3. Press the vehicle brake pedal slightly; just enough to illuminate the vehicle brake light(s). Then
repeat Steps 1 and 2.
4. Press the vehicle brake pedal firmly and repeat Steps 1 and 2.