Installation Manual

June, 2002 6880101W80-C 7
Frequency Conversion Mobile 1/4-Wave Antennas
Frequency Conversion
See Table 1. Antennas in each band are equipped with
whip radiators cut to the proper length for that specific
band. To change from one band to another, a whip
assembly of the proper length should be substituted
for one previously in use. Antennas in the 136-150.8
MHz range are also equipped with a spring washer
(roof mount models only; see Figure 3) to provide for
proper impedance matching. Should it be desired to
change from an antenna in the 136-150.8 MHz range to
one in the other ranges, this washer must be removed
in addition to changing the whip assembly. Con-
versely, to shift from the other ranges to the 136-
150.8 MHz range, a spring washer must be installed in
addition to changing the whip assembly.
Motorola Recommendations for
Mobile Antenna Location
Recommended mobile antenna installations are lim-
ited to metal body vehicles at the center of the roof and
center of the trunk deck locations. Refer to Table 2.
The antenna installation must additionally be in accor-
dance with:
• the requirements of the antenna manufac-
turer/supplier
• instructions in the Radio Installation manual.
Antenna Location
Mobile Antenna Installation
Mobile Radio Operation and EME Exposure
Observe the following caution and electromagnetic
energy exposure (EME) statements when installing
antennas:
CAUTION
Use caution when installing antennas
with mobile radio equipment using
transmitter power of 7 W or greater.
Install antennas only on metal bodied
vehicles.
NOTE
For low-power mobile radios (less than
7 W) there are no antenna type or instal-
lation restrictions.
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 vehi-
cle are at least the minimum distance away from a
properly installed, externally-mounted antenna.
Table 3 lists the minimum distance for several different
ranges of rated radio power.
Selecting an Antenna Site
1. Install the vehicle antenna external to the
vehicle and in accordance with the require-
ments contained in this manual.
Plug Assembly Procedure
Figure 13. Plug Assembly Procedure
Figure 14.