Chapter 8: External Equipment Installation; Vehicle Antenna Installation; Mobile Radio Operation And Eme Exposure; Selecting An Antenna Site - Motorola MTM800 FuG Installationshandbuch

Chapter
8
External Equipment Installation

Vehicle Antenna Installation

Mobile Radio Operation and EME Exposure

To assure optimal radio performance and that human exposure to radio frequency electromagnetic energy is within
the guidelines referenced in this document, transmit only when people inside and outside the vehicle are at least the
minimum distance away from a properly installed, externally mounted antenna. The following table lists the
minimum distance for several different ranges of rated radio power.

Table 62: Related Power and Distance

Mobile Radio Rated Power (see Note below)
Less than 7 Watts
7 to 14 Watts
15 to 39 Watts
40 to 110 Watts
Note: If you are not sure of the rated power of your radio, contact your Motorola representative or dealer
and supply the radio model number found on the radio model label. If you cannot determine the rated
power out, then assure 90 cm (3 ft) separation from the body of the vehicle.

Selecting an Antenna Site

Procedure:
1 Install the vehicle antenna external to the vehicle and in accordance with:
• The requirements of the antenna manufacturer/supplier
• The requirements of the vehicle manufacturer
2 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 that 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.
Caution: It is recommended to mount the antenna outside the vehicle. Also make sure that your power
cable is not placed with the antenna in parallel. Interference can cause radio to hang.
4 Check the antenna location for any electrical interference according to vehicle manufacturer requirements.
5 Make sure that the mobile radio antenna is installed at least 30 centimeters (1 ft) away from any other antenna on
the vehicle.
Minimum Lateral Distance from Vehicle Body
20 Centimetres (8 inches)
30 Centimetres (1 Foot)
60 Centimetres (2 Feet)
90 Centimetres (3 Feet)
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