Inserting The Radio Into The Mounting Bracket; Front-Mount Radio's Dc Power Installation; Overview Of On/Off Power Wiring Configurations - Harris M7300 Installation And Product Safety Manual

Vhf and 700/800 mhz front and remote-mount mobile radios with ch-721 scan and system control heads
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MM-014763-001, Rev. E
6. Using the bracket as a template, and/or the dimensional information shown in Figure 8-3, mark and
drill at least four (4) mounting holes into the mounting surface as required per the type of hardware
used.
CAUTION
7. Temporarily remove the bracket and deburr all of the newly drilled holes.
8. If necessary, apply an approved paint or rust-inhibitor at the holes in the mounting surface.
9. Set the bracket back into place.
10. Install and tighten the mounting screws/hardware.
11. Verify the bracket is firmly secured to the mounting surface. A secure mount prevents unreasonable
vibration, which could damage the radio and/or cause its cable connections to loosen.
12. If the rear of the radio is easily accessible when the radio is positioned in the selected position within
the bracket, it is recommended that the radio be temporarily inserted into the bracket. Otherwise, do
not mount the radio into the bracket at this time, because several cable connections must be made at
the rear of the radio.
7.1.2

Inserting the Radio into the Mounting Bracket

The radio should now be inserted into the mounting bracket according to this procedure:
1. Lay the radio into the mounting bracket with the front of the radio facing in the correct direction
(usually towards the rear of the vehicle).
2. Secure the radio to the bracket using at least four (4) of the six (6) M5 x 10 mm stainless-steel socket-
head screws included with the Mounting Bracket Kit. These screws have captive lockwashers. Kit
contents are shown in Figure 7-2. This kit is Item 1 listed in Table 4-3 (page 22).
3. Tighten all screws using a 4-millimeter hex key wrench until each lockwasher is fully compressed
and the radio is firm and flush in between the brackets.
4. Check the mounting area for proper clearance for cable service looping and for air circulation, plus an
area to secure and rest the excess cable lengths.
7.2

FRONT-MOUNT RADIO'S DC POWER INSTALLATION

7.2.1

Overview of On/Off Power Wiring Configurations

The following power wiring configurations are supported:
Radio turns on and off automatically with vehicle's ignition switch/key — This configuration
allows the on/off state of the vehicle's ignition switch/key to control the on/off power state of the
38
Before drilling holes and/or installing mounting screws, verify these operations will not
damage or interfere with any existing vehicle component (the fuel tank, a fuel line, the
transmission housing, existing vehicle wiring, etc.). Always check to see how far the
mounting screws will extend below the mounting surface prior to installation. Always
deburr drilled holes before installing screws.
Proper mounting is one factor that ensures optimal radio performance. An improperly
mounted radio may experience degradation in the quality of voice and data
communications.

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