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MM-014763-001, Rev. E
7
FRONT-MOUNT RADIO INSTALLATION
7.1
MOUNTING THE FRONT-MOUNT RADIO
The Mounting Bracket Kit for the front-mount M7300 mobile radio includes a heavy-gauge steel
U-shaped mounting bracket. The radio should be attached to a mounting surface using this bracket. The
bracket can be mounted above or below the radio. Kit contents are shown in Figure 7-2, and bracket
dimensions are shown in Figure 7-3.
Both the radio and the mounting bracket have multiple holes in both sides for adjusting the radio within
the bracket. The design allows for both front-to-rear tilting of the radio within the bracket for best viewing
angle, and a front-to-rear position offset. The radio has six (6) threaded mounting holes, three (3) per side,
and the mounting bracket has ten (10) corresponding holes, five (5) per side. The radio must be secured to
the bracket using at least four of the six M5 socket-head screws included in the Mounting Bracket Kit (2
screws per side).
Typically, the radio is front-to-rear centered within the bracket. However, it can be front-to-rear offset by
approximately 2 inches (5.1 centimeters), if required. Also, the radio can be positioned straight in the
bracket (i.e., parallel with the bottom surface of the bracket), or it can be tilted up or down at an angle of
between approximately 10 to 20 degrees. When positioned straight and centered front-to-rear within the
bracket, the radio extends approximately 2.5 inches (6.4 centimeters) from the front and rear edges of the
bracket. In the rear, additional clearance must be included for cables. The area directly at the front of the
radio must be completely clear of all objects (e.g., gear shift, other radio equipment, etc.) so the operator
can easily access and visualize the radio's control head.
The mounting bracket must be attached to a secure metal surface that meets or exceeds the minimum
1/16-inch-thick steel sheet metal requirement in accordance with the following
it can be attached directly to the bottom of the dash if the gauge of the sheet metal is high and the surface
is firm and flat, or it can be attached to the transmission hump, etc., if a mounting wedge (not included) is
utilized. The front-mount M7300 radio weighs approximately 9.2 pounds (4.17 kilograms).
CAUTION
34
This section includes detailed instructions for mechanically installing and wiring a
front-mount M7300 mobile radio. For remote-mount M7300 mobile radio installation
procedures, refer to Section 8 which begins on page 44.
At a minimum, the mounting surface should be 16-guage (approximately 1/16-inch
thick) steel sheet metal. Mounting to plastic or other material with low tensile and
shear strength could lead to an unsafe and/or failed mounting condition, turning
the radio and its mounting bracket into a projectile during a high-shock incident
such as a motor vehicle accident. If the selected mounting surface does not meet
the minimum 16-guage steel sheet metal requirement, the surface should be
reinforced with a metal backing plate (not supplied) or it should be reinforced
using some other approved mounting method.
In addition to improving safety of the installation, firm mounting also prevents
unreasonable vibration that could damage the radio, adversely affect transceiver
performance and/or cause its cable connections to loosen. An improperly mounted
M7300 radio may experience degradation in the quality of voice and data
communications.
. For example,
WARNING
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