Radio Shack TRC-237 Bedienungsanleitung

OWNER’S MANUAL Cat. No. 21-1650

TRC-237

40-Channel 5-Watt

CB Walkie Talkie

with Channel 9/19 Priorit

Switch

Please read before using this equipment.

21-1650.fm Page 1 Thursday, August 5, 1999 11:43 AM

FEATURES

Your RadioShack TRC-237 40-Channel 5-

Watt CB Walkie Talkie with Channel 9/19

Priority Switch is a portable, two-way radio

you can carry almost anywhere. The chan-

nel priority switch lets you quickly switch to

either Channel 9 to report emergency situ-

ations, or to Channel 19 to transmit and re-

ceive information about road and traffic

conditions. You can use your TRC-237

around the house, in your office, or in your

car or boat. You can also use it on fishing

trips, or at your business for supervisory,

security, or warehouse personnel.

Your TRC-237 also has the following fea-

tures:

Transmit Power High/Low Switch —

lets you reduce the transceiver’s power

output during short-range transmissions

to save battery power.

Transmit Indicator — lights whenever

you press the transmit button.

Modulation Indicator — lights when you

speak into the microphone. The indicator

brightens as modulation increases.

Built-In Modulation Limiter Circuit —

automatically adjusts to a variety of voice

levels to ensure a clear transmission.

PLL (Phase-Locked-Loop) Frequency

Synthesizer — provides reliable and ex-

act tuning.

Adjustable Squelch — helps to eliminate

noise between transmissions.

RadioShack is a registered trademark

used by Tandy Corporation.

21-1650.fm Page 2 Thursday, August 5, 1999 11:43 AM

2-Digit LED Display — lets you easily

see the selected channel number.

Automatic Noise Limiter (ANL) Circuit

— reduces noise caused by nearby elec-

trical equipment such as motors or auto-

motive ignition systems.

Battery Test Button andBatteryIndica-

tor — lets you check the batteries’ condi-

tion to find out if they need replacing.

Flexible Antenna with BNC Connector

— provides excellent reception and trans-

mission, and is designed to help prevent

antenna breakage.

Automatic Display Dimmer — the chan-

nel display automatically brightens when

you press most buttons. Then, after a few

seconds, it dims to save battery power.

Power/Charging Jack — lets you power

your TRC-237 from an AC or DC power

source,so you can use the TRC-237 with-

out draining the batteries. And, lets you

charge nickel-cadmium batteries without

removing them from the TRC-237.

Note: You need eight AA alkaline batter-

ies or ten nickel-cadmium rechargeable

batteries (not supplied) to power your

TRC-237.

We recommend you record the TRC-

237’s serial number here. The serial

number is located on the radio’s back

panel:

21-1650.fm Page 3 Thursday, August 5, 1999 11:43 AM

FCC INFORMATION

The Federal Communications Commis-

sion (FCC) does not require you to have

a license to operate this walkie talkie.

However, the FCC does require that you

read and know Part 95 of

FCC Rules

These rules apply to the operation of a

Class D CB. We have provided a copy of

these regulations with your TRC-237.

Internal adjustments and/or modifications

can lead to illegal operation as defined by

Part 95 of

FCC Rules

. Such illegal opera-

tion can lead to very serious consequenc-

es.

To be safe and sure:

• Never open your TRC-237’s case.

• Never modify your TRC-237.

Your TRC-237 might cause TV or radio

interference even when it is operating

properly. To determine whether your

TRC-237 is causing the interference, turn

off your TRC-237. If the interference goes

away, your TRC-237 is causing it. Try to

eliminate the interference by:

• Moving your TRC-237 away from the

TV or radio

• Contacting your local RadioShack

store for help

Warning: Do not open your TRC-237 to

make any internal adjustments. Any inter-

nal adjustments should be made only by

authorized service personnel.

21-1650.fm Page 4 Thursday, August 5, 1999 11:43 AM

CONTENTS

Powering the CB ................................ 6

Using the POWER Jack and

ALKALINE/NI-CD Switch .................. 6

Using Batteries ................................. 7

Testing the Battery Power .......... 10

Recharging Nickel-Cadmium

Batteries ..................................... 10

Using Vehicle Battery Power........... 12

Using AC Power ............................. 13

Connecting the Antenna ..................15

Connecting an

Optional Antenna ........................16

Operation .......................................... 18

Receiving Transmissions and

Adjusting Squelch .......................... 18

Transmitting .................................... 20

CB Operation Tips ........................... 21

Common Uses for a CB Radio ....... 21

Business Uses ........................... 21

Personal Uses ........................... 21

Using Common 10-Codes .............. 22

CB Courtesy ................................... 24

Maximum Range ............................ 24

Troubleshooting ............................... 25

Maintenance ..................................... 26

Specifications .................................. 27

21-1650.fm Page 5 Thursday, August 5, 1999 11:43 AM

POWERING THE CB

You can power yourTRC-237 from any of

these sources (none supplied):

• Eight AA alkaline batteries with the

two supplied dummy batteries

• Ten rechargeable AA nickel-

cadmium batteries

• 12-volt vehicle battery power using a

fused power cord

• Standard AC power using a power

supply

USING THE POWER JACK

AND ALKALINE/NI-CD

SWITCH

The POWER jack lets you connect an ex-

ternal power source (such as your vehi-

cle’s battery power or AC power), or

connect a battery charger to charge

nickel-cadmium batteries while they are in

the TRC-237.

The TRC-237 also has a slide switch (AL-

KALINE/NI-CD) inside the battery com-

partment that you must set correctly,

depending on what power source you are

using and whether or not you want to

charge rechargeable batteries while they

are in the TRC-237.

21-1650.fm Page 6 Thursday, August 5, 1999 11:43 AM

•SetittoALKALINE before you con-

nect an external power source (vehi-

cle battery power or AC adapter) to

the POWER jack or while you are us-

ing internal batteries (alkaline or re-

chargeable).

•SetittoNI-CD

only

when you con-

nect a battery charger to the POWER

jack to charge the installed recharge-

able batteries.

Warning: To avoid injuring yourself or

damaging the TRC-237, connect a bat-

tery charger to the POWER jack

only

when nickel-cadmium batteries are in-

stalled (see “Recharging Nickel-Cadmium

Batteries” on Page 10). Never try to re-

charge non-rechargeable batteries. They

could get very hot and explode.

Note: You can connect an external pow-

er source for power regardless of the type

of batteries you installed.

USING BATTERIES

You can power the TRC-237 from eight

AA alkaline batteries (such as Ra-

dioShack Cat. No. 23-552) with the two

supplied dummy batteries, or 10 re-

chargeable AA nickel-cadmium batteries

(such as Cat. No. 23-125).

21-1650.fm Page 7 Thursday, August 5, 1999 11:43 AM

Cautions:

• Always use fresh, or freshly charged,

batteries of the required size and

recommended type.

• Do not mix old and new batteries,

different types of batteries (stan-

dard, alkaline, or rechargeable

nickel-cadmium), or rechargeable

batteries of different capacities.

Follow these steps to install the batteries.

1. If the TRC-237 is on, turn OFF/VOLUME

fully counterclockwise until it clicks to

turn it off.

2. Slide the strap on the back of the

TRC-237 through the buckle and the

battery compartment cover to re-

move it.

3. Slide the battery compartment cover

in the direction of the arrows to

remove it.

21-1650.fm Page 8 Thursday, August 5, 1999 11:43 AM

4. Be sure ALKALINE/NI-CD inside the

battery compartment is set to ALKA-

LINE.

5. Put eight AA alkaline batteries and

the two supplied dummy batteries, or

ten AA nickel-cadmium batteries into

the battery compartment, as indi-

cated by the polarity symbols (+ and

–) marked inside.

Note: Before you use the TRC-237

with nickel-cadmium batteries, you

need to charge the batteries (see

“Recharging Nickel-Cadmium Batter-

ies” on Page 10).

6. Replace the battery compartment

cover and the strap on the back of

the TRC-237.

Cautions:

• If you will not be powering the TRC-

237 from internal batteries for sev-

eral months, remove the batteries.

• Dispose of old batteries promptly

and properly.

21-1650.fm Page 9 Thursday, August 5, 1999 11:43 AM

Testing the Battery Power

1. Turn on the TRC-237 by rotating

OFF/VOLUME clockwise until it clicks.

2. Hold down BATT TEST. If the indica-

tor lights, there is enough battery

power to operate the CB. If the indi-

cator is dim or does not light, replace

or recharge the batteries.

Recharging Nickel-Cadmium

Batteries

You can use a battery charger, Cat. No.

23-249 (not supplied), to charge or re-

charge nickel-cadmium batteries while

they are inside the TRC-237’s battery

compartment.

Do not use the TRC-237 while you are

charging the nickel-cadmium batteries.

Cautions:

• Use only the recommended battery

charger to recharge the batteries in

the TRC-237. Other chargers could

damage your TRC-237 or the batter-

ies.

• Be careful not to overcharge nickel-

cadmium batteries.

• To prevent damage to rechargeable

nickel-cadmium batteries, never

charge them in an area where the

temperature is above 90°F (32°C) or

below 40°F (4.5°C).

21-1650.fm Page 10 Thursday, August 5, 1999 11:43 AM

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