Radio Shack TRC-499 Bedienungsanleitung

Cat. No. 21-1599

OWNER’S MANUAL

40-Channel 2-Way CB Radio

Please read before using this equipment.

TRC-499

21-1599.fm Page 1 Thursday, August 5, 1999 10:59 AM

INTRODUCTION

Radio Shack is a registered trademark used by Tandy Corporation.

Your Radio Shack TRC-499 40-

Channel 2-Way CB Radio is a high

performance CB with the maximum

allowable legal power and innovative

styling.

This CB is perfect for recreational,

business, or emergency use. You

can call other people who have CBs

at home, in their vehicles, or at camp

sites. You can also connect optional

equipment to your CB, such as an

external PA speaker, or a DC power

supply and base station antenna to

set up a base station in your home.

Your CB has these features:

PLL (Phase-Locked Loop) Fre-

quenc

nthesizer—provides reli-

able and exact tuning using a precise

frequency reference crystal.

Two Ceramic Filters—provide su-

perior selectivity and prevent adja-

cent-channel interference.

steresis Squelch Circuit—

compensates for fading signals and

eliminates signal chopping during re-

ception.

Automatic Noise Limitin

(ANL)

Circuit—reduces noise caused by

nearby electrical equipment such as

motors or automotive ignition sys-

tems.

DOWN/UP Channel Selector—

provides maximum convenience

when selecting channels.

LED Displa

— lets you easily see

the selected channel number.

Universal Mountin

Bracket—lets

you mount your CB securely in your

vehicle or on a table or shelf in your

home.

Note: To use this CB, you need a

mobile or base station antenna. Your

local Radio Shack store has a wide

variety of antennas. For more infor-

mation, see “Installing an Antenna.”

For your records, we urge you to

record your CB’s serial number inthe

space below. The serial number is on

the CB’s back panel.

Serial Number_________________

21-1599.fm Page 2 Thursday, August 5, 1999 10:59 AM

FCC INFORMATION

The Federal Communications Com-

mission (FCC) does not require you

to have a license to operate this CB.

However, the FCC does require you

to read and know Part 95 of

FCC

Rules

. These rules apply to the oper-

ation of a Class D CB. We have pro-

vided a copy of these regulations

with your CB.

Warnin

:Do not open your CB to

make any internal adjustments. Any

internal adjustments can be made

only by authorized service person-

nel.

Internal adjustments and/or modifi-

cations can lead to illegal operation

as defined by Part 95 of

FCC Rules

Such illegal operation can lead to

very serious consequences.

To be safe and sure:

• Never open your CB’s case.

• Never modify your CB.

Your CB might cause TV or radio in-

terference 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 iscausing the interfer-

ence. Try to eliminate the interfer-

ence by:

• Moving your CB away from the

receiver.

• Contacting your local Radio

Shack store for help.

If you cannot eliminate the interfer-

ence, the FCC requires that you stop

using your CB.

21-1599.fm Page 3 Thursday, August 5, 1999 10:59 AM

CONTENTS

Installation ....................................................................................................... 5

Mounting the Microphone Holder ............................................................... 5

Connecting the Microphone........................................................................ 5

Mounting the TRC-499................................................................................ 5

Installing an Antenna.................................................................................. 6

Selecting an Antenna............................................................................6

Connecting an Antenna ....................................................................... 7

Using Vehicle Battery Power ...................................................................... 7

Using the CB as a Base Station................................................................. 7

Connecting an Optional External Speaker ................................................. 8

Operation ......................................................................................................... 9

Receiving Transmissions and Adjusting Squelch .......................................9

Transmitting ................................................................................................ 9

CB Operation Tips..................................................................................... 10

Common Uses for a CB Radio............................................................ 10

CB Courtesy.........................................................................................11

Maximum Range..................................................................................11

Using Common 10-Codes................................................................... 12

Troubleshootin

............................................................................................ 13

Reducing Noise ........................................................................................ 14

Maintenance .................................................................................................. 15

Replacing the Fuse ................................................................................... 16

Specifications ................................................................................................ 17

21-1599.fm Page 4 Thursday, August 5, 1999 10:59 AM

INSTALLATION

MOUNTING THE

MICROPHONE HOLDER

Using a Phillips screwdriver and the

supplied small screws and small

metal washers, attach the supplied

microphone holder horizontally or

vertically to either side of the CB.

CONNECTING THE

MICROPHONE

1. Insert the microphone’s plug into

the microphone jack until it

clicks.

Caution:

The microphone’s plug

fits only one way into the micro-

phone jack. Do not force it.

2. Slide the microphone onto the

microphone holder.

To disconnect the microphone cable,

squeeze the bottom of the micro-

phone’s plug, then gently pull it out.

Caution: Never pull on the micro-

phone cable.

MOUNTING THE

TRC-499

The mostcommon mountinglocation

for this CB is under a vehicle’s dash-

board. However, if you use the TRC-

499 as a base station, you can place

it on a desk, shelf, or table (see “Us-

ing the CB as a Base Station”).

If you are mounting the CB in a vehi-

cle, choose a location where:

• You can easily reach the CB.

• Wires and cables will not inter-

fere with the vehicle’s pedals or

other moving parts.

• The CB is not directly in front of

heating vents.

• All wires and cables will reach

their connection points.

Cautions:

• The TRC-499 is designed to

work in a vehicle that has a 12-

volt DC, negative-ground electri-

cal system. Most vehicles have

this type of system. If you are

not sure about your vehicle,

check with your vehicle dealer.

21-1599.fm Page 5 Thursday, August 5, 1999 10:59 AM

• If you use the TRC-499 in a

vehicle, mount it securely to

avoid damage to the CB or vehi-

cle during sudden starts or

stops.

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.

2. In each marked location, drill a

hole slightly smaller than the

supplied large screws.

Caution: Be careful not to drill

into anything behind the mount-

ing surface.

3. Using a Phillips screwdriver,

attach the mounting bracket to

the mounting surface with the

large screws and supplied lock

washers.

4. Attach the CB to the mounting

bracket using the rubber wash-

ers and mounting knobs.

INSTALLING AN

ANTENNA

Caution: To prevent damage to your

CB, you must connect an antenna to

the CB before you operate it.

Selecting an Antenna

When deciding on a mobile or base-

station antenna and its location, con-

sider these points:

• The location of the antenna

should be as high as possible.

• The antenna and antenna cable

should be as far as possible

from sources of electrical noise

(ignition systems, gauges, etc.).

• The antenna should be vertical

for the best performance.

Your local Radio Shack store sells a

variety of CB antennas for both mo-

bile and base-station use. Choose

the one that best meets your needs.

21-1599.fm Page 6 Thursday, August 5, 1999 10:59 AM

Connecting an Antenna

Once you choose an antenna, follow

the mounting instructions supplied

with it. Then route the antenna cable

to the CB and connect the cable to

the ANTENNA jack on the back of the

CB.

Cautions:

• Do not run the cable over sharp

edges or moving parts.

• Do not run the cable next to

power cables or other CB

antenna cables.

• Do not run the cable through a

vehicle’s engine compartment or

other areas that produce

extreme heat.

USING VEHICLE

BATTERY POWER

You can power this CB from your ve-

hicle’s battery or from standard AC

power with an optional DC power

supply. For information on using AC

power, see “Using the CB as a Base

Station.”

Follow these steps to power the CB

from your vehicle’s battery.

1. Connect the CB’s black wire to

your vehicle battery’s negative

(–) terminal or to a metal part of

the vehicle’s frame that is not

insulated from the frame by a

plastic part.

2. Connect the CB’s red wire, with

in-line fuse, to a source of volt-

age that turns on and off with the

ignition switch, such as a spare

accessory terminal in your vehi-

cle’s fuse box.

USING THE CB AS A

BASE STATION

Although this CB is designed for mo-

bile use, you can also use it as a

base station. To do so, you need the

following items.

• 12-volt DC power supply (such

as Cat. No. 22-120)

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 power supply, read

and follow the instructions pro-

vided with the power supply.

21-1599.fm Page 7 Thursday, August 5, 1999 10:59 AM

• Base station antenna (such as

Cat. No. 21-967)

• Coaxial antenna cable and con-

nectors

Note: Your local Radio Shack store

carries power supplies, antennas,

coaxial antenna cable, and connec-

tors.

Follow these steps to install the CB

as a base station.

1. Mount the base station antenna

as described in its owner’s man-

ual.

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 the

power line, contact with the

antenna, mast, cable, or guy

wires can cause electrocution

and death. Call the power com-

pany to remove the antenna. DO

NOT attempt to do so yourself.

2. Connect the antenna’s cable to

the ANTENNA jack on the back

of the CB.

3. Connect the CB’s black wire to

the DC power supply’s negative

(–) terminal.

4. Connect the CB’s red wire, with

in-line fuse, to the DC power

supply’s positive (+) terminal.

5. Plug the DC power supply into a

standard AC outlet.

CONNECTING AN

OPTIONAL EXTERNAL

SPEAKER

To make the CB easier to hear in

noisy environments, you can connect

it to an external CB speaker. Use an

8-ohm speaker capable of handling 3

to 5 watts of power (such as Radio

Shack Cat. No. 21-549). The speak-

er’s cable must have a1/8-inch plug.

Simply plug the speaker cable into

the CB’s EXT8 Ωjack.

Note: When you connect an external

speaker, the CB’s internal speaker

automatically disconnects.

21-1599.fm Page 8 Thursday, August 5, 1999 10:59 AM

OPERATION

Before you start using your CB, you

should know how to use it effectively

and courteously. “CB Operation

Tips” contains information that will

help you use and enjoy your CB.

RECEIVING

TRANSMISSIONS AND

ADJUSTING SQUELCH

Caution: Do not attempt to use your

CB without first connecting an anten-

na to it.

1. Turn SQUELCH fully counter-

clockwise.

2. To turn on the CB, turn VOLUME

clockwise until you hear it click

and you hear a hissing sound.

The CB displays a channel num-

ber.

3. Turn SQUELCH clockwise until

the hissing sound stops.

Note: If the CB picks up

unwanted, partial, or very weak

transmissions, turn SQUELCH

clockwise to decrease the CB’s

sensitivity to these signals. If

you want to listen to a weak or

distant station, turn SQUELCH

counterclockwise.

4. Adjust

VOLUME to a comfortable

listening level.

5. Press DOWN to select lower

channels or UP to select higher

channels. The channel number

appears on the display.

Important! Channel 9 is

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.

6. To turn off the TRC-499, turn

VOLUME counterclockwise until

you hear it click.

TRANSMITTING

Note: We recommend you try receiv-

ing transmissions before you trans-

mit.

21-1599.fm Page 9 Thursday, August 5, 1999 10:59 AM

1. Follow Steps 1-5 under “Receiv-

ing Transmissions and Adjusting

Squelch.”

2. Hold the microphone 2 or 3

inches from your mouth. Then

press and hold down the micro-

phone talk button and speak into

the microphone in a normal

voice. The TX indicator turns on.

Note: Do not speak too loudly

when transmitting. It does not

make your signal any stronger,

and might distort your transmis-

sion.

3. When you finish transmitting,

release the microphone talk but-

ton. The TX indicator turns off.

You can now receive transmis-

sions.

4. To turn off the TRC-499, turn

VOLUME counterclockwise until

you hear it click.

CB OPERATION TIPS

Like most activities, CB radio has its

customs and courtesies. The follow-

ing tips will help you get the most en-

joyment from your CB.

Common Uses for a CB

Radio

Business Uses

• Truck drivers and delivery per-

sonnel can learn road and traffic

conditions and get assistance in

locating destinations. A CB is

also good company on those

“long hauls.”

• On construction crews, a CB

quickly pays for itself when you

are calling for additional materi-

als or coordinating the activities

of different work crews.

• For security officers, a CB is

more than a convenience –it is

a must for both safety and effi-

ciency.

Personal Uses

• Keep in touch with home while

driving to work, to the store, or to

a social activity. Let your family

know you are tied up in traffic or

that you will stop by the store on

the way home.

• If you are a two-car (or more)

family, CBs are great for com-

municating with family members

while they are in their cars.

• Contact friends or neighbors –

find out “what’s happening” or

plan a get-together.

• Ever have car trouble or run out

of gas on the highway? What an

21-1599.fm Page 10 Thursday, August 5, 1999 10:59 AM

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