Radio Shack TRC521 CB Marine Radio User Manual


 
4
Dual band antennas provide optimum reception of CB and
WX channels. For mobile installations (car, boat), a non-
directional antenna provides the best CB reception. Mobile
antennas use your vehicle’s metal body as a ground plane.
If the CB is installed in a boat, your boat’s steel hull is used
as a ground plane. Without a steel hull serving as a ground
plane, you will not receive maximum efficiency. Before
using your CB in a boat, consult with your boat dealer
regarding an adequate grounding system.
Keep in mind that for the best performance you should
mount the antenna:
as high as possible.
as far as possible from sources
of electrical noise.
vertically.
1. Follow the antenna’s
instructions to mount it.
2. Route the antenna cable to
the CB radio and connect it
to the
ANT. jack.
CONNECTING TO VEHICLE BATTERY POWER
1. Connect the CB’s red POWER wire to a terminal in your
vehicle’s fuse box that has power only when the ignition
is in the ACC (accessory) or ON position.
2. Connect the CB’s black
POWER wire to a metal part of
the vehicle’s frame (chassis ground). Ô
CONNECTING AN OPTIONAL
E
XTERNAL SPEAKER
You can connect an
external speaker to the
CB. Use an 8-ohm
speaker with a
1
/8-inch
(3.5-mm) plug. Insert the
speaker’s plug into the
CB’s
EXT. SP. jack.
Antenna Cable
ANT. Jack
CAUTION
Avoid routing the cable next to
sharp edges or moving parts,
which might damage the cable.
Do not run the cable next to
power cables or other radio
antenna cables.
Do not run the cable through
the engine compartment or
other areas that produce
extreme heat.
Ô NOTE Ô
Do not connect the black wire to a
non-metallic (plastic) part, or to any
part insulated from the vehicle’s
chassis by a non-metallic part.
EXT. SP. Jack
Black and red
POWER wires