CB Radios - Cautions to Observe When Installing

Category 15
Applicable Model/s ALL MODELS
Subject INSTALLATION OF 2-WAY (CB) RADIOS
Bulletin No. 025/86
Issued 4/8/86
Revised

CB-Radio Installation:

DESCRIPTION

If a two-way (CB) radio system is installed improperly or if the wrong type of unit is used, the EGI system or other vehicle systems may be affected. This is because electronic control units can sometimes be affected by interference from such CB units. To prevent such problems, observe the following cautions when installing a CB radio in Mazda vehicles.


1.. Keep the antenna feeder as far as possible from the control units and harnesses (at least 30 cm or 11.8 in.).
^ Never fasten the antenna feeder to the control unit harnesses.

Control Units Locations:

2. Install the antenna at the farthest point from the control units.

Adjusting The CB Radio:

3. Insure that the antenna and feeder are properly adjusted.

Make the necessary adjustment by using an SWR (standing wave ratio) meter.

CAUTION - Power Amplifier Installation:

4. Do not install a power amplifier or an excessively powerful mobile two-way radio (more than 10W).

Grounded Shield:

5. Make sure the control units are properly grounded. Cover the control units with a grounded steel or aluminum shield if it is deemed necessary.
NOTE:
If a mobile two-way radio which requires constant current for memory etc. is used, the engine should be started and run everyday to prevent the battery from discharging. If the vehicle is not to be operated for an extended period, the constant current to the two-way radio should be disconnected.