2101706
Owner’s Manual
Please read before using this equipment.
40 Channel Mobile CB
with Di
g
ital Compass, and EL
Backlit LCD Display
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2
Features
Features
Your RadioShack 40 Channel Mobile CB is a
great way to communicate with other CB
radio operators. You can mount it in a vehicle
for mobile use, or in your home for use as a
base station.
Your CB has these advanced features:
LCD display with EL backlight on display
and controls
— lets you see the CB’s
operating status at a glance and helps you
easily see the display and controls when you
use the CB at night.
Digital Compass
— aids navigation on the
road.
Emergency Channel One Touch Access
— lets you quickly switch to Channel 9 or 19
so you can monitor or report emergency
situations.
3 Channel Memories
— let you easily
access your favorite channels.
Last Channel Recall (RCL)
— Lets you
quickly recall the last channel used.
Dual Channel Controls
— let you tune the
channel from the transceiver or the
microphone.
RF Gain Control
— lets you adjust the
receiver’s gain to match the strength of the
signal.
Phase-Locked Loop (PLL) Frequency
Synthesizer
— provides highly accurate and
stable tuning.
Two Built-In Ceramic Filters
— ensure
superior channel selectivity and freedom
from adjacent channel interference.
Automatic Modulation Control
— prevents
the transmitter signal from over-modulating
and distorting.
Automatic Noise Limiter
— reduces
impulse-type noises while receiving.
Built-In PA (Public Address) Amplifier
—
lets you use your CB as a public address
system when you add an optional PA
speaker.
Universal Mounting Bracket
— lets you
mount your CB securely in your vehicle.
Note:
To use this CB, you must connect a
mobile or base station antenna. Your local
RadioShack store has a wide variety of
antennas. For more information, see
“Connecting an Antenna” on Page 4.
FCC INFORMATION
The Federal Communications Commission
(FCC) does not require you to have a license
to operate this CB radio. However, you must
know Part 95 of
FCC Rules
. It explains the
proper operation of a Class D citizen’s band
transceiver. We enclosed a copy of Part 95
with your CB radio.
Warning:
Do not open the CB radio to make
any internal adjustments. A CB radio is set
up to transmit a regulated signal on an
assigned frequency. It is against the law to
alter or adjust the settings inside the unit to
exceed these limitations.
To be safe and sure:
• Never open your CB radio’s case.
• Never change or replace anything in
your CB radio.
©
2002 RadioShack Corporation.
All Rights Reserved.
RadioShack and RadioShack.com are trademarks used by RadioShack Corporation.
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Installation
Your CB radio might cause TV or radio
interference even when it is operating
properly. To determine whether your CB is
causing the interference, turn off your CB. If
the interference goes away, your CB is
causing it. Try to eliminate the interference
by:
• moving your CB away from the receiver
• contacting your local RadioShack store
for help
This device complies with Part 15 of the
following two conditions: (1) this device may
not cause harmful interference, and (2) this
device must accept any interference
received, including interference that may
cause undesired operation.
Installation
ATTACHING THE
MICROPHONE HOLDER
You can attach the microphone holder to the
right side of the transceiver or to another
location in your vehicle.
To attach the holder to the transceiver,
secure the holder to the right side using the
supplied 3 mm screws and lock washer.
To attach the holder to another location in
the vehicle, such as the dashboard, follow
these steps.
1. Using the holder as a template, mark th e
positions for the mounting screw holes
at the desired location.
2. At each marked position, drill a small
starter hole.
Caution:
Be careful not to drill into
anything behind the mounting surface.
3. Attach the holder at the mounting
location using the supplied machine
screws, spring washers, plain washers,
and nuts.
Note:
If you cannot reach behind the
mounting surface to attach the nuts on
the machine screws, use the supplied 3
mm plain washers and self-tapping
screws.
MOUNTING THE
TRANSCEIVER
The most common mounting location for this
CB is under a vehicle’s dashboard. However,
if you plan to use the CB as a base station,
you can place it on a desk, shelf, or table
(see “Using the Transceiver as a Base
Station” on Page 6).
If you are mounting the CB in a vehicle,
choose a location where:
• You can easily reach the CB.
• Wires and cables are clear of the
vehicle’s pedals or other moving parts.
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4
Installation
• The CB is not directly in front of heating
vents.
• All wires and cables can reach their
connection points.
Warnings:
• If you use the CB in a vehicle, mount it
securely to avoid damage to the CB or
vehicle or injury to anyone in the vehicle
during sudden starts or stops.
• Do not mount the CB where it could
damage or interfere with the operation of
any passive restraint safety device (an
airbag or seat belt).
Follow these steps to mount the CB using
the supplied hardware.
1. Using the mounting bracket as a
template, mark the positions for the
screw holes on the mounting surface.
2. In each marked location, drill a small
starter hole.
Caution:
Be careful not to drill into
objects behind the mounting surface.
3. Mount the bracket to the mounting
surface with the supplied 5 mm bolts,
spring washers, plain washers, and
nuts.
Note:
If you cannot reach behind the
mounting surface to attach the nuts on
the bolts, use the supplied 5 mm self-
tapping screws and plain washers to
secure the bracket.
4. Peel the backings off the adhesive on
the back of the supplied rubber washers
and attach the washers to the mounting
holes on the CB. then attach the CB to
the mounting bracket using the
mounting knobs.
CONNECTING AN ANTENNA
There are many different types of CB
antennas for mobile CBs. Each type has its
own benefits, so choose the one that best
meets your needs. Your cal RadioShack
store sells a wide variety of antennas.
Note:
If you are using this CB as a base
station, see “Using the Transceiver as a
Base Station” on Page 6.
When you choose an antenna, keep in mind
that, for the best performance, you should
mount the antenna:
• as high as possible on the vehicle
• as far as possible from sources of
electrical noise
• vertically
Once you choose an antenna, follow its
mounting instructions. Then route the cable
to the transceiver and connect the cable to
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Installation
the
ANTENNA
jack on the back of the
transceiver.
Cautions:
• 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.
To take advantage of your radio’s maximum
range, adjust the antenna’s Standing Wave
Ratio (SWR) using an SWR meter (not
supplied).
Follow the instructions supplied with the
SWR meter and antenna to adjust your
antenna’s SWR to the lowest possible value.
SWR values of 2.0:1 are generally
acceptable, with readings of 1.5:1 or lower
being more desirable.
CONNECTING THE
MICROPHONE
Align the tab on the side of the supplied
microphone’s plug with the notch in the
microphone jack (on the side of the
transceiver). Then insert the plug into the
jack.
Slide the microphone onto the microphone
holder.
To disconnect the microphone from the
transceiver, press the tab on the side of the
plug. Then pull out the plug.
Caution:
Never pull on the microphone
cable.
CONNECTING AN
EXTERNAL SPEAKER
You can connect your transceiver to an
external CB speaker, so you can hear an
incoming call when you are outside your
vehicle, or use the CB as a PA system.
Connecting a CB Speaker
The external speaker you use with the
transceiver should have an impedance of 8
ohms and be able to handle 10 watts of
power. The speaker cable must have a
1
/8-
inch plug.
To connect the external speaker to the
transceiver, insert the speaker cable’s plug
into
EXT
SPKR
on the back of the CB.
Note:
When you connect an external
speaker, the CB’s internal speaker
disconnects.
Connecting a PA Speaker
The PA speaker should have an impedance
of 8 ohms and be able to handle 10 watts of
power. The speaker cable must have a
1
/8-
inch plug.
If your PA speaker meets the other
specifications but does not already have a
1
/
8-inch plug, you can connect it using a phono
plug-to-wire cable, available at your local
RadioShack store.
To connect the PA speaker to the
transceiver, insert the speaker cable’s plug
into
PA
SPKR
on the back of the CB.
Antenna
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Installation
Note:
To avoid acoustic feedback, the
speaker should be at least 6 feet from the
CB. If you experience feedback, avoid keying
the microphone until you have moved the
speaker away from the CB.
CONNECTING THE
COMPASS
Insert the compass cable’s plug into
SENSOR
on the back of the CB. Do not place the
compass cable near the DC cord or the
antenna cable.
CONNECTING AN
OPTIONAL MICROPHONE/
EARPHONE
You can connect an optional microphone or
earphone with a
3
/32-inch (2.5mm) mini plug
and a
1
/8-inch (3.5mm) plug to the
MIC/EAR
jacks on the front of the CB.
To connect a headset with Voice Activated
operation, we recommend you check the
response sensitivity of the VOX circuit before
installation. Different Voice Activation
devices provide different performance
results.
Traffic Safety
Do not use an earphone with your
transceiver when operating a motor vehicle
in or near traffic. Doing so can create a traffic
hazard and could be illegal in some areas.
If you use an earphone with your transceiver
be very careful. Do not listen to a continuous
broadcast. Even though some earphones/
headphones let you hear some outside
sounds when listening at normal volume
levels, they still can present a traffic hazard.
USING VEHICLE BATTERY
POWER
Follow these steps to connect the transceiver
to vehicle battery power.
1. Connect the red wire (with the inline
fuse holder) on the back of the
transceiver to a point in your vehicle’s
fuse block that has power only when the
ignition is in the ACC (accessory) or ON
position.
2. Connect the black wire to a metal part of
the vehicle’s frame (chassis ground).
Caution:
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.
USING THE TRANSCEIVER
AS A BASE STATION
Although this transceiver is designed mainly
for mobile use, you can also use it as a base
station with an AC power source.
For base station installation, you need these
items:
• 12-volt DC power supply that can supply
at least 2 amps
Caution:
Most 12-volt DC power
supplies plug into a standard AC outlet
to produce DC power. Before
connecting your CB to a 12-volt DC
Red
Black
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Installation
power supply, read and follow the
instructions included with the power
supply.
• base station antenna.
• coaxial antenna cable and connectors,
available at your RadioShack store.
For the best performance, place the antenna
as far as the cable length.
Caution:
To prevent damage to the CB, be
sure you connect an antenna and the
microphone before you use your CB.
Follow these steps to install the CB as a
base station.
1. Mount the base station antenna as
described in its owner’s manual.
Warning:
Use extreme caution when
you install or remove a base station CB
antenna. If the antenna starts to fall, let it
go! It could contact overhead power
lines. If the antenna touches a power
line, contact with the antenna, mast,
cable, or guy wires can cause
electrocution and death. Call the power
company to remove the antenna. Do not
attempt to do so yourself!
Caution:
To comply with the FCC RF
Exposure compliance requirements, a
separation distance of at least 20.0 cm
must be maintained between this
device’s antenna and all persons.This
device must transmit with a source-
based time-averaging duty factor not
exceeding 50%.
Note:
Installation and Operation
instructions are for satisfying FCC RF
Exposure compliance.
2. Connect the antenna to
ANTENNA
on
the back of the CB.
3. Connect the transceiver’s black power
wire to the negative (–) terminal on the
DC power supply.
4. Connect the transceiver’s red wire (with
the in-line fuse) to the positive (+)
terminal on the DC power supply.
5. Connect the DC power supply to a
standard AC outlet.
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Operation
Operation
Before you use your CB, you should know
how to use it effectively and courteously.
“Transmission Courtesy” on Page 10
contains information that will help you get
more enjoyment from your CB.
RECEIVING
TRANSMISSIONS AND
ADJUSTING SQUELCH
1. Set
PA/MON/CB
to
CB
.
2. Turn
SQUELCH
fully counterclockwise.
3. Turn
RF
GAIN
fully clockwise.
4. Turn on the transceiver by turning
VOLUME
clockwise until it clicks. All LCD
segments appear briefly. Then the
channel and
HN
appear.
5. Rotate the channel selector, or
repeatedly press (or hold down)
UP
or
DOWN
on the microphone until the
desired channel appears.
6. Adjust
VOLUME
to a comfortable
listening level.
7. To cut out background noise between
transmissions, wait until there is no
signal, then slowly turn
SQUELCH
clockwise until the background noise
stops.
Notes:
• To receive very weak signals, turn
SQUELCH
counterclockwise. You
hear noise between transmissions,
but you also hear weak transmissions
(those not strong enough to break
through a higher squelch setting).
• If you experience interference from
nearby frequencies, turn
RF GAIN
counterclockwise to reduce the
receiver’s sensitivity.
To turn off the CB, turn
VOLUME
to
OFF
until
it clicks.
TRANSMITTING
Note:
we recommend you try receiving
before you transmit.
Follow Steps 1–7 in “Receiving
Transmissions and Adjusting Squelch.”
To transmit, hold down
PUSH
TO
TALK
on the
microphone.
JN
appears. Hold the
microphone 2–3 inches from your mouth and
speak in a normal tone of voice, then release
PUSH
TO
TALK
when you finish.
JN
disappears.
To turn off the CB, turn
VOLUME
to
OFF
until
it clicks.
SELECTING THE
EMERGENCY CHANNEL
Important:
Channel 9 and Channel 19 are
reserved for motorist assistance and for
reporting emergency information about
accidents, hazardous road conditions, and
so on. Always give emergency messages
priority on Channel 9 or Channel 19.
To select the emergency channel 9, press
the channel selector once. Press again to
select channel 19.
/
or
'/
flashes. Press one
more time to return to the previous selected
channel.
You can also select Channel 9 or 19 by
turning the channel selector or pressing
UP
or
DOWN
on the microphone.
To select another channel, rotate the
channel selector or press
UP
or
DOWN
.
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