6
6880360B49-A
July, 2002
Mobile 1/4-Wave Antennas
Frequency Conversion
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 2) 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 manufacturer/
supplier
• instructions in the Radio Installation manual.
Antenna Location
Mobile Antenna Installation
Selecting an Antenna Site
1.
Install the vehicle antenna
external
to the
vehicle and in accordance with the require-
ments contained in this manual.
Figure 12.
Plug Assembly Procedure
Figure 13.
Plug Assembly Procedure
