Pierce Enforcer, Operator'S Manual

Page: 181 / 196

© 2018 Pierce Manufacturing Inc. All Rights Reserved.
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APPENDIX A
MOBILE RADIO
INSTALLATION GUIDE
SPECIAL NOTE:
The information contained in this guide has been prepared for use by persons installing two-way radio equipment
(transmitters and receivers) in Pierce apparatus. It has been prepared in accordance with current engineering
principles and generally accepted practices, using the best information available at the time of publication. These
guidelines are intended to supplement, but not be used in place of, detailed instructions for such installations which
are the sole responsibility of the manufacturer of the land mobile radio. Since it is not possible to cover all possible
installations of two-way radio equipment, Pierce Manufacturing cannot be held responsible for incidental or
consequential damages arising from the use of the information contained herein. Certain land mobile radios, or the
way in which they are installed, may affect vehicle operations such as the performance of the engine and driver
information, entertainment, and electrical charging systems. Expenses incurred to protect the vehicle systems from
any diverse effect of any such installation are not the responsibility of Pierce Manufacturing.
1. General Information
Pierce apparatus are designed and tested for safe operation with properly installed and properly used land mobile
radio communications equipment with up to 150 watts of transmitter power.
Special design considerations are incorporated into all Pierce apparatus electronic systems to provide immunity to
radio frequency signals. In addition, Pierce installed electrical systems and components are designed to control
undesired electromagnetic radiation and radio frequency interference resulting from the use of such equipment. To
maintain compatibility with vehicle electronic systems, mobile two-way radio and telephone equipment must be
installed properly by trained personnel, observing these general guidelines:
•
Power and ground connections should be made directly to the battery or radio power and ground distribution
terminals located inside the chassis power distribution box.
• When possible, solder should be applied to power and ground wire terminations.
• Avoid cigar lighter or “power point” receptacles as power sources for radio communication equipment.
• The radio equipment circuit protection devices (fuses) should be installed as close as possible to the power and
ground source.
• Antennas for two-way radios should be permanently mounted on the roof of the vehicle.
• The antenna cable should be high quality, fully shielded coaxial cable, and kept as short as practical.
• Avoid routing the antenna cable in parallel with vehicle wiring over long distances.
• Carefully match the antenna and cable to the radio to achieve a low Standing Wave Ratio (SWR) and to avoid
RF currents on the antenna cable shield.
All installations should be checked for possible interference between the communications equipment and vehicle
electronics. Mobile radio equipment with greater than 150 watts output may require special precautionary measures
beyond those outlined in this document.
This pamphlet is provided as a supplement to the radio manufacturer’s installation instructions for installing
communications equipment in Pierce apparatus. Additional sources of information are listed in
“Additional
Information” on page A-3 .
Radio transmitters are regulated by the Federal Communications Commission (FCC) in the United States.
Compliance with FCC regulations is the responsibility of the manufacturer and/or user of the transmitter equipment,
not Pierce Manufacturing.