Installation Manual

MN003109A01_aa
Standard Configurations Antenna Installation 2-33
Figure 2-36. Multiple Antennas Separation for locations 1-10
Figure 2-36 indicates the separation distances required for the various antennas used with an APX
8500 midpower radio. Each "cross-hair" symbol represents a possible location (i.e. LOC) of an
antenna. The recommendation is to locate them as close to the center of the roof and/or trunk as
possible, without interference with a lightbar. This picture is not drawn to scale.
For letters A, B, C, and D, the table indicates the EXACT distance for separation of the LMR
antennas.
For letters E, F, G, and H, the table indicates the maximum distance between the edge of the ground
plane and the accessory antenna location.
NOTE:
• A minimum of 18 inch separation is required between lightbar and any roof mounted antennas,
to prevent interference with the lightbar circuitry (see lightbar manufacturers installation
information).
• The LMR 700/800 antennas should only be placed at LOC:2 or LOC:5.
• Standard LMR VHF and UHF antennas should only be placed at LOC:1, LOC:3, LOC:4 and
LOC:6.
• 1/4 wave LMR VHF and UHF antennas should only be placed at LOC:1 and LOC:3 (i.e.roof
only) to ensure compliance with RF Energy Exposure regulations.
• The VML antenna must be separated from any LMR antenna by at least 40 inches.
• The LTE Main and Diversity Antenna locations should be at LOC:9 and LOC:10 when the LMR
All-Band or LMR 700/800 narrow band antennas are at LOC:2 (i.e LTE opposite location from
the LMR).
• The LTE Main and Diversity Antenna locations should be at LOC:7 and LOC:8 when the LMR
All-Band or LMR 700/800 narrow band antennas are at LOC:5 (i.e LTE opposite location from
the LMR).
• In some mobile installations that include an LTE modem, external filtering on the LMR port and/
or the LTE port may be needed to reduce interference. Contact your local Motorola Solutions
Service Center for more information and for filter kit numbers (See Appendix for contact info).
Table 2-1 Distance Between Antenna
Characters Distance Characters Distance
A 8 inches E 8 inches
B 8 inches F 8 inches
C 8 inches G 8 inches
D 8 inches H 8 inches
F
F
E
G
C
D
G
H
H
E
LOC:7
LOC:1
LOC:2
LOC:3
A
B
LOC:8
LOC:9
LOC:4
LOC:5
LOC:6
LOC:10
Roof
Center
Trunk
Center
NOTE: Do not cut
the antenna cable
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G
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aft
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istance Between Antennace Between A
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