Radio Shack TRC-498 Bedienungsanleitung

Cat. No. 21-1598

OWNER’S MANUAL

Please read before using this equipment.

TRC-498

40-Channel CB Mobile Transceiver

with Digital Signal Processor

21-1598.fm Page 1 Thursday, August 5, 1999 10:52 AM

FEATURES

RadioShack is a trademark used by Tandy Corporation.

Powerhorn is a registered trademark used by Tandy Corporation.

Your RadioShack TRC-498 40-

Channel CB Mobile Transceiver is a

breakthrough in CB design technolo-

gy. It includes a DSP (Digital Signal

Processor) circuit for improved audio

quality, which reduces background

noise and virtually eliminates the

whines and whistles commonly heard

on crowded CB frequencies.

Your CB also has these advanced fea-

tures:

DSP Switch and Indicator — turns

the DSP circuit on and off and shows

the on/off status of the circuit.

Phase-Locked Loop (PLL) Frequen-

nthesizer — provides highly ac-

curate and stable tuning.

Two Built-In Ceramic Filters — en-

sure superior channel selectivity and

freedom from adjacent channel inter-

ference.

Automatic Modulation Control —

prevents the transmitter signal from

over-modulating and distorting.

Automatic Noise Limiter — reduces

impulse-type noises while receiving.

Lar

e, Illuminated, Di

ital Displa

— clearly shows the channel number.

Emer

enc

Channel Switch — lets

you quickly switch to Channel 9 so you

can monitor or report emergency situ-

ations.

Built-In PA (Public Address) Ampli-

fier — lets you use your CB as a public

address system when you add an op-

tional PA speaker.

Base Station Capabilit

— lets you

use the transceiver as a base station

powered from a standard AC outlet

(with an optional power supply and

base station antenna).

RF Gain Control — lets you adjust the

receiver gain to match the strength of

the received signal.

4-Step RX Si

nal/TX Power Meter —

shows the strength of the incoming

and outgoing transmissions.

External Speaker Jack — lets you

connect your CB to an external speak-

er.

Noise Reduction Switch — lets you

select one of two available noise re-

duction modes.

Universal Mountin

Bracket — lets

you mount your CB securely in your

vehicle or on a table or shelf in your

home.

21-1598.fm Page 2 Thursday, August 5, 1999 10:52 AM

Note: To use this CB, you must con-

nect a mobile or base station antenna.

Your local RadioShack store has a

wide variety of antennas. For more in-

formation, see “Connecting an Anten-

na” on Page 6.

We recommend you record your CB’s

serial number here. The number is on

the CB’s back panel.

Serial Number _________________

FCC INFORMATION

The Federal Communications Com-

mission (FCC) does not require you to

have a license to operate this CB ra-

dio. However, you must know Part 95

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.

Any adjustments to a CB radio must be

made by a qualified technician using

the proper test equipment.

To be safe and sure:

• Never open your CB radio’s case.

• Never change or replace anything

in your CB radio.

Your CB radio might cause TV or ra-

dio interference even when it is oper-

ating properly. To determine whether

your CB radio is causing the interfer-

ence, turn off your CB radio. If the in-

terference goes away, your CB radio

is causing it. Try to eliminate the inter-

ference by:

• Moving your CB radio away from

the receiver

• Contacting your local RadioShack

store for help

If you cannot eliminate the interfer-

ence, the FCC requires that you stop

using your CB radio.

This device complies with Part 15 of

FCC Rules

. Operation is subject to the

following two conditions: (1) this de-

vice may not cause harmful interfer-

ence, and (2) this device must accept

any interference received, including

interference that may cause undesired

operation.

21-1598.fm Page 3 Thursday, August 5, 1999 10:52 AM

CONTENTS

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

Attaching the Microphone Holder .................................................................... 5

Mounting the Transceiver ................................................................................ 5

Connecting an Antenna ................................................................................... 6

Connecting the Microphone ............................................................................. 7

Connecting Optional Speakers ........................................................................ 8

Using an External CB Speaker ................................................................. 8

Connecting a PA Speaker ......................................................................... 8

Using Vehicle Battery Power ........................................................................... 9

Using the Transceiver as a Base Station ......................................................... 9

Operation ............................................................................................................ 11

Receiving Transmissions and Adjusting Squelch .......................................... 11

Transmitting ................................................................................................... 12

Using the Digital Signal Processor ................................................................ 13

Selecting the Emergency Channel ................................................................ 13

Using the PA Amplifier ................................................................................... 14

Operational Hints ............................................................................................... 15

Common Uses for a CB ................................................................................. 15

Personal Uses ......................................................................................... 15

Business Uses ........................................................................................ 15

Maximum Range ........................................................................................... 16

Transmission Courtesy .................................................................................. 16

Using Common 10-Codes ............................................................................. 17

Troubleshootin

................................................................................................. 18

Reducing Noise ............................................................................................. 20

Care and Maintenance ....................................................................................... 21

Replacing the Fuse ........................................................................................ 22

Specifications ..................................................................................................... 23

21-1598.fm Page 4 Thursday, August 5, 1999 10:52 AM

INSTALLATION

ATTACHING THE

MICROPHONE HOLDER

You can connect the microphone hold-

er to either side of the transceiver or to

another location in your vehicle.

To attach the holder to either side of

the transceiver, secure the holder to

the side using the supplied screws and

lock washers.

To attach the holder to another loca-

tion in the vehicle, such as the dash-

board, follow these steps.

1. Using the holder as a template,

mark the positions for the mount-

ing screw holes at the desired

location.

2. At each marked position, drill a

hole slightly smaller than the sup-

plied mounting screws.

Caution: Be careful not to drill

into anything behind the mount-

ing surface.

3. Attach the holder at the mounting

location using the supplied 3 mm

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 dash-

board. However, if you use the TRC-

498 as a base station, you can place it

on a desk, shelf, or table (see “Using

the Transceiver as a Base Station” on

Page 9).

If you are mounting the CB in a vehi-

cle, choose a 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.

21-1598.fm Page 5 Thursday, August 5, 1999 10:52 AM

Caution: If you use the CB in a vehi-

cle, mount it securely to avoid damage

to the CB or vehicle or injury to anyone

in the vehicle 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 on the mounting

surface.

2. In each marked location, drill a

hole slightly smaller than the sup-

plied mounting screws.

Caution: Be careful not to drill

into objects behind the mounting

surface.

3. Mount the bracket to the mounting

surface with the supplied 6 mm

bolts, spring washers, plain wash-

ers, and nuts.

Note: If you cannot reach behind

the mounting surface to attach the

nuts on the bolts, use the supplied

6 mm self-tapping screws and

plain washers to secure the

bracket.

4. Attach the CB to the mounting

bracket using the supplied rubber

washers and 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

local RadioShack store sells a wide va-

riety of antennas.

Note: If you are using this CB as a

base station, see “Using the Trans-

ceiver as a Base Station” on Page 9.

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

21-1598.fm Page 6 Thursday, August 5, 1999 10:52 AM

Once you choose an antenna, follow

its mounting instructions. Then route

the cable to the transceiver and con-

nect the cable to the ANT 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 ca-

bles.

• Do not run the cable through the

engine compartment or other

areas that produce extreme heat.

To achieve 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 pos-

sible value. SWR values of 2.0:1 are

generally acceptable, with readings of

1.5:1 or lower being more desirable.

CONNECTING THE

MICROPHONE

1. Press the tab on the side of the

supplied microphone’s plug and

insert the plug into the micro-

phone jack on the side of the

transceiver. Be sure the tab is

aligned with the jack’s notch.

2. Slide the microphone onto the

microphone holder.

Caution: To disconnect the micro-

phone from the transceiver, press the

tab on the side of the plug. Then pull

out the plug. Never pull on the micro-

phone cable.

To Antenna

21-1598.fm Page 7 Thursday, August 5, 1999 10:52 AM

CONNECTING

OPTIONAL SPEAKERS

You can connect your transceiver to an

external CB speaker and/or a PA (pub-

lic address) speaker.

Note: When you connect an external

or PA speaker, the CB’s internal

speaker disconnects.

Using an External CB

Speaker

The external speaker you use with the

transceiver should have an impedance

of 8 ohms and be able to handle 3 to 10

watts of power, such as RadioShack

Cat. No. 21-549. 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 the EXT SPKR jack on the

back of the CB.

To an 8-ohm,

3- to 10-Watt

Speaker

Power

Connections

Connecting a PA Speaker

The PA speaker should have an im-

pedance of 8 ohms and be able to han-

dle at least 5 watts of power, such as

any of the RadioShack Powerhorn®se-

ries speakers. The speaker cable must

have a 1/8-inch plug.

If your PA speaker does not already

have a 1/8-inch plug, we recommend

connecting the PA speaker with 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 the PA SPKR jack on the back

of the CB.

Note: The speaker should be at least 6

feet from the CB.

To an 8-ohm,

5-Watt or Greater

Speaker

Power

Connections

21-1598.fm Page 8 Thursday, August 5, 1999 10:52 AM

USING VEHICLE

BATTERY POWER

Follow these steps to connect the

transceiver to vehicle battery power.

1. Connect the red wire (with the in-

line 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 posi-

tion.

2. Connect the black wire to a metal

part of the vehicle’s frame (chas-

sis ground).

Caution: Do not connect the

black wire to a non-metallic (plas-

tic) 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 1.5 amps (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

included with the power supply.

• Base station antenna (such as

Cat. No. 21-967)

• Coaxial antenna cable and con-

nectors

Note: Your local RadioShack

store carries coaxial antenna

cable and connectors.

Black Wire

to Ground

Red Wire to

Switched

Accessory

Terminal

21-1598.fm Page 9 Thursday, August 5, 1999 10:52 AM

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 con-

tact 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.

2. Connect the antenna to the ANT

jack on the back of the CB.

Black Wire

to Negative

Terminal of

DC Power

Supply

Red Wire

to Positive

Terminal of

Supply

DC Power

Antenna

3. Connect the transceiver’s black

power wire to the negative (–) ter-

minal on the DC power supply.

4. Connect the transceiver’s red wire

(with the in-line fuse) to the posi-

tive (+) terminal on the DC power

supply.

5. Connect the DC power supply to a

standard AC outlet.

21-1598.fm Page 10 Thursday, August 5, 1999 10:52 AM

Inhaltsverzeichnis

Andere Radio Shack Transceiver Handbücher

Radio Shack

Radio Shack TRC-485 Bedienungsanleitung

Radio Shack

Radio Shack HTX-400 Bedienungsanleitung

Radio Shack

Radio Shack HTX-10 Bedienungsanleitung

Radio Shack

Radio Shack HTX-242 Bedienungsanleitung

Radio Shack

Radio Shack HTX-252 Bedienungsanleitung

Radio Shack

Radio Shack TRC-506 Bedienungsanleitung

Radio Shack

Radio Shack 21-1811 Bedienungsanleitung

Radio Shack

Radio Shack HTX-242 Bedienungsanleitung

Radio Shack

Radio Shack 19-902 Bedienungsanleitung

Radio Shack

Radio Shack HTX-400 Bedienungsanleitung

Radio Shack

Radio Shack BTX-128 Bedienungsanleitung

Radio Shack

Radio Shack HTX-212 Bedienungsanleitung

Radio Shack

Radio Shack 19-903 Bedienungsanleitung

Radio Shack

Radio Shack TRC-510 Bedienungsanleitung

Radio Shack

Radio Shack BTX-124 Bedienungsanleitung

Radio Shack

Radio Shack BTX-128 Bedienungsanleitung

Radio Shack

Radio Shack HTX-10 Bedienungsanleitung

Radio Shack

Radio Shack BTX-127 Bedienungsanleitung

Radio Shack

Radio Shack HTX-245 Bedienungsanleitung

Radio Shack

Radio Shack HTX-242 Bedienungsanleitung

Radio Shack

Radio Shack TRC-485 Bedienungsanleitung

Radio Shack

Radio Shack PRS-102 UHF 19-902 Bedienungsanleitung

Radio Shack

Radio Shack HTX-404 Bedienungsanleitung

Radio Shack

Radio Shack HTX-420 Bedienungsanleitung

Beliebte Transceiver Handbücher anderer Marken

Yaesu

Yaesu FT-7B Bedienungsanleitung

Kenwood

Kenwood ProTalk TK-3201 Bedienungsanleitung

Mizuho

Mizuho MX-2 Produkthandbuch

Kenwood

Kenwood TK-3180 Bedienungs- und Wartungshandbuch

Blitz

Blitz MJ-398U Bedienungsanleitung

Utilicom

Utilicom LongRanger 2050 Bedienungsanleitung

Standart

Standart HX290UKA Bedienungsanleitung

Altronix

Altronix Pace1PTM Bedienungsanleitung

Kirisun

Kirisun PT2208 Bedienungsanleitung

ELECRAFT

ELECRAFT KX2 Bedienungsanleitung

Zodiac

Zodiac K3 Bedienungsanleitung

Assa Abloy

Assa Abloy SecureComm HKC GSM-WIFI U Bedienungsanleitung

Kenwood

Kenwood TK-2217 Bedienungsanleitung

Siemens

Siemens PSO 4000 Bedienungsanleitung

Kenwood

Kenwood TS-590SG Bedienungsanleitung

Midland

Midland G8E-BT Handbuch

ComNav

ComNav Mariner X2 Bedienungsanleitung

Uniden

Uniden UH820 Series Bedienungsanleitung