Radio Shack TRC521 CB User Manual

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TRC521 CB Radio

 

 

 

OWNER’S MANUAL —

 

 

21-1711

Please read before using this equipment.

 

 

 

 

 

 

 

OFF/VOLUME — Rotate towards

SQUELCH — Rotate to reduce

RF GAIN — Rotate to

VOLUME to turn on your CB, and then

 

background noise (CB sensitivity).

 

improve signal reception in

adjust to desired listening level. Rotate

See Page 6.

strong signal areas. See

towards OFF to turn off your CB.

 

 

 

 

 

 

Page 6.

 

 

 

 

CB/WX — Slide to CBto

 

 

 

use and listen to citizen’s

 

 

 

 

 

 

 

 

 

 

 

 

 

CHANNEL — Rotate to

band radio. Slide to WX to

 

 

 

 

 

 

 

 

 

 

 

tune to a channel.

listen to local and national

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

weather broadcasts.

 

 

 

 

 

 

 

 

Connect the supplied

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

UP/DN — Press or hold

 

 

 

 

 

 

 

 

 

 

 

 

down to scroll up or down

microphone here.

 

 

 

 

 

 

 

 

 

through channels.

Mounting Bracket

 

 

 

 

 

 

 

 

 

 

 

 

 

Microphone

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Microphone Holder

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mounting hardware supplied

 

 

 

 

 

 

 

 

 

 

for the microphone holder

 

 

 

 

 

 

 

PTT — Push to talk. Hold down

and CB.

 

 

 

 

 

 

 

and talk into the microphone

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DUAL WATCH/ALERT TONE OFF —

while transmitting.

 

 

 

 

 

 

 

Press to activate dual watch (see

 

 

 

 

 

 

 

 

 

 

Page 11), or to silence weather alert

 

 

 

 

 

 

 

 

 

 

tones (see Page 10).

 

 

 

Thank you for purchasing the RadioShack TRC521 CB Radio. It provides two-waycommunication on the citizen’s radio band and lets you tune to local and national weather service broadcasts. It provides the maximum legal power output for the greatest available range, and abuilt-inPLL(phase-lockedloop) frequency synthesizer to reduce congestion.

CB radio provides hours of fun and entertainment! Listen and talk to people from all over the country while traveling, and make new friends along routes that you regularly travel. It is also a great way to keep informed of local emergencies, such as traffic accidents, road blocks, weather alerts and so on.

! IMPORTANT!

If an icon appears at the end of a paragraph, go to the box on that page with the corresponding icon for pertinent information.

o WarningCautionÔ Note

© 2004 RadioShack Corporation.

All Rights Reserved.

RadioShack and RadioShack.com

are trademarks used by

RadioShack Corporation.

CONTENTS

 

CB Radio Setup .........................

2

Attach the Microphone Holder

2

Mount the CB ..........................

2

Connect the Microphone .........

3

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

3

Connecting to Vehicle

 

Battery Power .........................

4

Connecting an Optional

 

External Speaker ....................

4

Using the CB as a Base Station . 5

Receiving and Transmitting ........

6

Receiving ...............................

6

Transmitting ............................

6

Using Common 10-Codes ......

7

Tips for Using Your CB ...............

8

Business Use ..........................

8

Personal Use ..........................

8

Transmission Courtesy ...........

8

Maximum Range .....................

9

Reducing Noise ......................

9

Listening to the Weather Band . 10

Using Digital Weather Alert ...

10

Using Dual Watch ..................

11

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

11

Troubleshooting .......................

12

Care .........................................

12

Service and Repair ...............

12

FCC Information .......................

13

Specifications ...........................

14

Accessories ..............................

15

oWARNINGo

Mount the CB securely to avoid damage to the CB or vehicle, and to avoid injury to anyone in the vehicle during sudden starts or stops.

CB RADIO SETUP

Your CB’s display is protected during shipment by a piece of clear film. Carefully peel off this film before using your radio.

ATTACH THEMICROPHONEHOLDER

You can attach the microphone holder horizontally or vertically to either side of your CB.

Vertical

 

Microphone

Horizontal

 

 

Holder

 

 

 

 

 

 

 

 

 

 

 

 

To attach the microphone holder somewhere else, follow these steps.

1.Use the microphone holder as a template to mark the positions for the mounting screws at the desired mounting location.

2.Drill a hole at the marked position. Do not drill into anything behind the mounting surface.

3.Attach the microphone holder to the mounting surface using the supplied (small) machine screws and lockwashers.

MOUNT THECB

Find a convenient location in your vehicle to mount your CB. If you are uncomfortable mounting the CB yourself, consult with your vehicle service center or automotive dealer for assistance. o

Select a mounting location where:

you can easily reach the CB.

wires and cables are clear of the vehicle’s pedals or other moving parts.

the CB is not directly in front of heating vents.

all wires and cables can reach their connection points.

1.Use the mounting bracket as a template to mark the positions for the screws on the mounting surface.

2

2.At the marked positions, drill a hole slightly smaller than the mounting screws. Do not drill into objects behind the mounting surface.

3.Secure the mounting bracket to the mounting surface with the supplied screws and lockwashers.

Screws and Lockwashers

Mounting Bracket

Mounting

Knobs

Rubber

Washers

4.Attach the CB to the mounting bracket with the supplied rubber washers and mounting knobs.

Microphone

CONNECT THEMICROPHONEJack

1.

Align the holes inside

 

 

 

 

 

 

the microphone’s plug

 

 

 

 

 

 

with the pins in the

 

 

 

 

 

 

 

 

 

 

 

 

microphone jack and

 

 

 

 

 

 

insert the plug.

 

 

 

 

 

2.

Turn the plug’s locking

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nut clockwise to secure

 

 

 

 

 

 

it.

Locking

 

3.

Slide the microphone

Nut

 

 

Microphone Plug

 

onto the holder.

 

 

 

 

 

4.To disconnect the microphone, unscrew the locking nut and pull the microphone plug toward you. Do not pull the microphone cable.

CONNECTING ANANTENNA

To use this CB, you need a mobile or base station antenna. There are many types of antennas for CBs. Each type has its own benefits, so choose the one that best meets your needs. Your local RadioShack store sells a wide variety of antennas. If you are using this CB as a base station, see “Using the CB as a Base Station” on Page 5.

3

EXT. SP.

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 NOTEÔ

Do not connect the black wire to a non-metallic(plastic) part, or to any part insulated from the vehicle’s chassis by anon-metallicpart.

Dual band antennas provide optimum reception of CB and WX channels. For mobile installations (car, boat), a nondirectional 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

 

Black and red

 

of electrical noise.

 

 

POWER wires

vertically.

 

 

 

 

 

 

 

 

 

 

 

 

1.

Follow the antenna’s

 

 

 

 

 

 

 

instructions to mount it.

 

 

 

 

 

 

 

 

 

 

 

 

 

2.

Route the antenna cable to

ANT. Jack

 

 

 

 

 

 

 

 

 

the CB radio and connect it

 

 

 

 

 

 

 

 

 

 

 

 

to the ANT. jack.

 

 

 

 

 

 

 

 

Antenna Cable

CONNECTING TOVEHICLEBATTERYPOWER

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 ANOPTIONAL

EXTERNALSPEAKER

You can connect an

external speaker to the EXT. SP. Jack CB. Use an8-ohm

speaker with a 1/8-inch(3.5-mm)plug. Insert the speaker’s plug into the CB’s jack.

4

USING THE CB AS A BASE STATION

Although this CB is designed for mobile use, you can use it as a base station with an AC power source. Your local RadioShack store carries a wide selection of base station antennas, coaxial antenna cable, connectors, and base station power supplies. For base station installation, you need the following items:

a 12-voltDC power supply that can supply at least 1.5 amps.

base station antenna.

coaxial antenna cable and connectors.

1. Mount the base station antenna as described in its owner’s manual. o

2. Connect the antenna cable to the

ANT. jack on the back of the CB.ANT.

Jack

3. Connect the CB’s black POWER Cable wire to the negative(–)terminal

on the DC power supply.

DC Power Supply

Red wire connected to + terminal

Black wire connected to – terminal

4.Connect the CB’s red POWER wire to the positive (+) terminal on the DC power supply.

5.Connect the DC power supply to a standard AC outlet.

CAUTION

Most 12-voltDC power supplies plug into a standard AC outlet to produce DC power. Before connecting your CB to a12-voltDC power supply, read and follow the instructions included with the power supply.

oWARNINGo

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.

5

ÔNOTE Ô

Only rotate SQUELCH until the hissing stops. If you continue to rotate it clockwise, you will be unable to receive any signals.

You may want to purchase an SWR (Standard Wave Ratio) meter to measure your range and signal strength. This will enable you to adjust your antenna for maximum range, and determine the best position for RF GAIN. See your SWR meter owner’s manual for instruction on how to use it.

RECEIVING AND

TRANSMITTING

We recommend you try receiving transmissions before you transmit.

RECEIVING

1.Rotate OFF/VOLUME towardsOFF until it clicks to turn off the CB.

2.Slide CB/WX toCB.

3.Rotate SQUELCH fully counterclockwise.

4.Rotate RF GAIN fully clockwise.

5.Rotate OFF/VOLUME clockwise to turn on the CB. The display lights and the channel number appears. An alert sounds if a weather alert signal is detected (see “Using Digital Weather Alert” on Page 10).

6.To decrease CB sensitivity so you do not hear weak, distant signals, slowly rotate SQUELCH clockwise until the hissing stops. To increase sensitivity and to receive

very weak signals, rotate SQUELCH counterclockwise.

Ô

7.Rotate RF GAIN clockwise to optimize reception

(incoming signal strength). Or, rotate it counterclockwise to decrease signal strength. Ô

8.To tune to a channel, rotate CHANNEL on the radio, or pressUP orDN on the microphone. To quickly scroll through channels in either direction, hold downUP orDN until you reach the desired channel.

9.Adjust VOLUME to a comfortable listening level.

10.To turn off the CB, rotate OFF/VOLUME counterclockwise toOFF until it clicks.

TRANSMITTING

1.To transmit, hold down PTT on the microphone. Hold the microphone about2–3inches from your mouth and speak in a normal tone of voice.TX lights to indicate transmission.

2.When you finish transmitting, release PTT.TX turns off.

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3.To turn off the CB, turn OFF/VOLUME counterclockwise toOFF until it clicks.

USINGCOMMON10-CODES

Citizen’s Band operators have adopted 10-codesfor standard questions and answers. These codes permit faster communication and better intelligibility in noisy areas. The more popular codes follow:

 

Code

Meaning

 

 

 

 

10-1

Receiving poorly.

 

 

 

10-2

Receiving well.

10-3

Stop transmitting.

 

 

 

10-4

OK, message received.

10-5

Relay message.

 

 

 

10-6

Busy, please stand by.

10-7

Out of service.

 

 

 

10-8

In service

10-9

Repeat message.

 

 

 

10-10

Transmission completed, standing by.

10-11

Talking too rapidly.

 

 

 

10-12

Visitors present.

10-13

Advise Weather/Road conditions.

 

 

 

10-17

Urgent business.

10-18

Anything for us?

 

 

 

10-19

Nothing for you. Return to base.

10-20

My location is____.

 

 

 

10-21

Call by telephone.

10-22

Report in person to____.

 

 

 

10-23

Please stand by.

10-25

Can you contact____.

 

 

 

10-26

Disregard last information.

10-27

I am moving to channel____.

 

 

 

10-28

Identify your station.

10-32

I will give you a radio check.

 

 

 

10-33

Emergency traffic.

10-36

Correct time is____.

 

 

 

10-37

Wrecker needed at____.

10-38

Ambulance needed at______

 

 

 

10-41

Please turn to channel_____.

10-42

Traffic accident at_____.

 

 

 

10-43

Traffic tie-upat____.

10-50

Break channel.

 

 

 

10-62

Unable to copy; use telephone.

10-70

Fire at_____.

 

 

 

7

This table lists the code meanings in the form of a statement. They can also be phrased as questions. For example, “10-6:Are you busy?”,“10-20:What is your location?”.

TIPS FOR USING YOUR CB

Like most activities, CB radio has its customs and courtesies. The following tips will help you get the most enjoyment from your CB.

BUSINESSUSE

Truck drivers and delivery personnel can learn road and traffic conditions and get assistance in locating destinations. A CB is also good company on long road trips.

On construction crews, a CB quickly pays for itself when you are calling for additional materials 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 efficiency.

PERSONALUSE

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 communicating 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 assurance it is to be able to call for assistance!

Camping, fishing, and other sports are more fun with a CB. Locate a buddy or find out “what’s cooking” back at camp.

TRANSMISSIONCOURTESY

Wait for a pause in someone else’s transmission before you ask for a break.

If you do not receive an answer to your call after a second attempt, sign off and wait several minutes before trying again.

8

Do not hold down PTT when you are not talking. (This is called dead keying.)

Assist callers with directions, information about road conditions, and any other reasonable requests.

MAXIMUMRANGE

Your CB radio’s transmission range is generally line-of-sight. The maximum range and quality of CB transmissions vary depending on the following conditions:

the type and quality of antenna used.

the height of the antenna’s mounting location — the higher the antenna, the better the signal’s range.

the surrounding terrain — mountains and tall buildings limit the range.

weather conditions.

the number of nearby CBs operating on the same channel.

standing wave ratio (SWR) between the antenna and the CB.

REDUCINGNOISE

Because your CB is exceptionally quiet, any noise you hear is probably from an external source in your vehicle, such as the alternator, another radio, or spark plugs. You can determine the noise source by turning off the engine and operating the CB with your vehicle’s ignition set to ACC. If the noise is reduced, the problem is in your vehicle’s ignition or electrical system.

To reduce or eliminate such noise:

Make all CB power and antenna wires as short as possible.

Keep the power wires away from the antenna wires.

Be sure the chassis ground connection is secure.

Replace old ignition wires with new, high-voltage,noise-suppressionwires.

Install noise suppressors on your spark plugs, or install new spark plugs that have built-innoise suppressors.

If problems persist, check your alternator/generator and regulator gauges. You can reduce the noise from these sources by using bypass capacitors at the various output voltage points.

9

ÔNOTE Ô

PTT does not work whenCB/WX is set toWX. You can only send transmissions when in CB mode.

You cannot transmit while WX/ ALERT flashes in CB mode.

The alert tones for a Test and EAT (Emergency Action Termination) sound very similar. We suggest you switch to WX mode immediately to listen to the weather broadcast.

Because of atmospheric conditions, you may receive signals that do not contain information relevant to the emergency level. This is normal.

The radio sounds an alert regardless of the channel setting.

The CB will not sound an alert while you are transmitting.

If you are in a rural or fringe area, your radio might be triggered by an alert broadcast in one area, but not be triggered if you travel to another area (even close by).

LISTENING TO THE WEATHER BAND

The National Oceanic and Atmospheric Administration (NOAA) broadcasts local forecast and regional weather information on one or more of seven channels in the US. We have pre-programmedyour CB with all seven of these frequencies.

Channel

Frequency (MHz)

 

 

WX1

162.400

 

 

WX2

162.425

WX3

162.450

 

 

WX4

162.475

WX5

162.500

 

 

WX6

162.525

WX7

162.550

 

 

To listen to a weather broadcast or alert, slide CB/WX toWX. RotateCHANNEL to select a frequency.Ô

To verify reception, your radio must receive a test or emergency alert broadcast. The National Weather Service broadcasts a test alert every week. To find the specific test schedule in your area, contact your local NOAA or National Weather Service office.

USINGDIGITALWEATHERALERT

When in CB mode, the radio automatically sounds an alert if a weather alert signal is detected. This is especially useful when your area is expecting severe weather conditions.

When your local weather station broadcasts a severe weather alert, the CB sounds a tone corresponding to the alert type and WX/ALERT lights.

Alert Type

You Hear

 

 

Warning

Continuous short beeps

 

 

Watch

Three short beeps and a 2

second pause (repeats)

 

Advisory

Two short beeps and a 2

second pause (repeats)

 

 

 

Test

One short beep and a 3 second

pause (repeats)

 

EAT (Emergency

One short beep and a 3 second

Action Termination)

pause (repeats) Ô

 

 

10