Motorola Astro Dimetra MTP, Instruction Manual, Page: 24 / 76

14
2. Position the external speaker onto the trunnion bracket, and
secure it using the wing screws provided.
Figure 6 External Speaker Installation Detail
Optional Radio
Frequency Power
Amplifier (RFPA)
Installation (XTS
Only)
Mount the optional RFPA using the four self-tapping screws provided
with the cable kit. Connect the cables as described below:
• A power cable with a 15-amp fuse attaches to the power amplifier
and directly to the battery; connect the red wire to battery
positive (+) and the black wire to chassis ground.
It is NOT good practice to connect the black lead directly to
the negative (-) battery terminal; the RFPA could be damaged
if there were a malfunction in the vehicle’s electrical system.
Important Note: Failure to mount the red lead of the power
cable kit directly to the battery may result in severe alternator
whine interference. If severe alternator whine interference is
present when the power cable is properly installed, a power
line filter kit, TLN5277_, can be purchased to reduce the
interference.
• An RF coaxial cable connects the XTVA antenna connector (J3) to
the
RF IN port on the RFPA.
• The RF cable from the antenna attaches to the RF OUT port on
the RFPA.
Note: The radio’s frequency band must match the RFPA’s
frequency band or they will not operate together correctly.
Hanger
Bracket
Auto
Window
Window Mounting
Detail
Mounting
Bracket Detail
Dashboard
Firewall
Trunnion Bracket
To
Firewall
Mounting
or
Dashboard
Firewall
10-16 x 5/8''
Self-Tapping
Screw
0.157'' (0.399cm)
Diameter
Trunnion
Bracket
10-16 x 5/8''
Self-Tapping
Screw
Console or Floor
!
C a u t i o n