Motorola VRS750, Service Manual

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Mobile Antennas
• Install antennas at the center of the roof or the center of the trunk deck. These mobile antenna
installation guidelines are limited to metal body vehicles.
• The antenna installation must additionally be in accordance with:
a. The requirements of the antenna manufacturer/supplier
b. Instructions in the Radio Installation Manual
• Use only Motorola approved supplied antenna or Motorola approved replacement antenna.
Unauthorized antennas, modifications, or attachments could damage the radio and may violate FCC
regulations.
Fixed Site Antennas
If mobile radio equipment is installed at a fixed location and operated as a control station or as a fixed
unit, the antenna installation must comply with the following requirements in order to ensure optimal
performance and compliance with the RF energy exposure limits in the above standards and guidelines.
• The antenna should be mounted outside the building on the roof or a tower if at all possible.
• As with all fixed site antenna installations, it is the responsibility of the licensee to manage the site in
accordance with applicable regulatory requirements and may require additional compliance actions
such as site survey measurements, signage, and site access restrictions in order to insure that
exposure limits are not exceeded.
Electromagnetic Interference/Compatibility
NOTE: Nearly every electronic device is susceptible to electromagnetic interference (EMI) if
inadequately shielded, designed or otherwise configured for electromagnetic
compatibility. It may be necessary to conduct compatibility testing to determine if any
electronic equipment used in or around vehicles or near fixed antenna sites is sensitive to
external RF energy and if any procedures need to be followed to eliminate or mitigate the
potential for interaction between the radio transmitter and the equipment or device.
Facilities
To avoid electromagnetic interference and/or compatibility conflicts, turn off your radio in any facility
where posted notices instruct you to do so . Hospitals or health care facilities may be using equipment
that is sensitive to external RF energy.
Table 1. Rated Power and Lateral Distance
Rated Power of Vehicle-Installed
Mobile Two-Way Radio
Minimum Lateral Distance from
Transmitting Antenna
Less than 7 watts 8 inches (20 centimeters)
7 to 15 watts 1 foot (30 centimeters)
16 to 50 watts 2 feet (60 centimeters)
51 to 110 watts 3 feet (90 centimeters)