Installation Manual

Table Of Contents
14221-1850-4000, Rev. A
64
2. Slide the radio into the mounting bracket. Position the VCH within the mounting bracket, avoiding
imbalance. Ensure the center of gravity is within the edges of the mounting bracket.
Figure 9-7: Acceptable VCH Positions within Bracket
3. When the radio is in the desired location within the bracket, tighten the four (4) M4 screws to a torque
of 5.85 Nm using the 2.5 mm Allen wrench, or hex bit.
4. Check the mounting area to ensure there is proper clearance for cable service looping, for air circulation,
and an area for securing excess cable.
Proper mounting helps ensure optimal radio performance. An improperly mounted radio
may experience degradation in the quality of voice and data communications.
9.2 REMOTE-MOUNT RADIO’S WIRING AND CABLING
Wiring and cabling includes the following Items:
12 VDC battery connection (A+) and wire routing for the rear-mount radio and Control Head.
Return connection and wire routing for the rear-mount radio and Control Head.
Ignition sense connection and wire routing for the rear-mount radio and Control Head.
Any DC input power provided to the radio must not be higher or lower than 13.6 volts DC ±10%.
The DC input power should be free and clear of any AC noise or DC spikes above 18 volts. If
the vehicle cannot meet these requirements, then DC conditioning is required before any DC
power is connected to the radio. This includes conditioning for both the radio’s main DC power
input lead and for its switched ignition sense power input. DC conditioning can be accomplished
by a noise filter or DC isolation equipment such as Harris part number FL-018314-001 or
FL-018314-002, or similar units with equal specifications. A fuse must be placed in-line before
any noise filter. Contact TAC for additional information.
These filters cannot be used with the 110-watt VHF mobile radio; in this case, consult with TAC
for details if necessary.
All cables should have a service loop near each connector end. Do not bend the cables at severe
angles near the connector end. Above all, after all components are installed, verify no cable is
under any tension. Failure to do so may lead to damaged cables, causing intermittent radio
operation or complete radio failure.
NOTE