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15

OPERATION

Before you start using your TRC-239, we recom-
mend you read “CB Operation Tips” on Page 17,
which contains information to help you use the TRC-
239 effectively and courteously.

RECEIVING TRANSMISSIONS 
AND ADJUSTING SQUELCH

Caution: Before receiving or transmitting, always
connect the antenna.

1. Rotate 

SQUELCH

 fully towards the top of the CB.

2. Rotate 

VOLUME

 toward the bottom of the CB

until it clicks. The CB turns on and a channel
appears. Increase the volume to a comfortable
listening level. (You might hear a hiss if there is
no signal on the selected channel.)

3. Press 

CH

 

9

 

or 

8

 until the desired channel

appears on the display. To move rapidly through
the channels, hold down 

9

or 

8

.

4. Rotate 

SQUELCH

 toward the bottom of the TRC-

239 until any hiss just stops. This lets you hear
transmissions without background noise. Rotat-
ing the control further decreases the TRC-239’s
sensitivity to incoming signals.

5. To turn off the TRC-239, rotate 

VOLUME

 upward

until it clicks.

TRANSMITTING

1. Follow Steps 1–4 in “Receiving Transmissions

and Adjusting Squelch.”

21-1628.fm  Page 15  Tuesday, January 25, 2000  9:30 AM

Summary of Contents for TRC-239

Page 1: ...Cat No 21 1628 OWNER S MANUAL Please read before using this equipment TRC 239 40 Channel 4 Watt CB Walkie Talkie 21 1628 fm Page 1 Tuesday January 25 2000 9 30 AM...

Page 2: ...for the best range possible Flex Antenna lets you transmit conveniently in confined quarters Selectable Transmit Power lets you adjust the output power to save battery power during short range transmi...

Page 3: ...prevents over modulation to ensure a clear sound Automatic Noise Limiter reduces noise caused by nearby electrical equipment such as motors or au tomotive ignition systems CHARGE Indicator lights to i...

Page 4: ...difica tions 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 yo...

Page 5: ...ry Power 10 Using AC Power 11 Connecting the Antenna 12 Connecting an Optional Antenna 13 Operation 15 Receiving Transmissions and Adjusting Squelch 15 Transmitting 15 CB Operation Tips 17 Typical Use...

Page 6: ...to POWER you must set NI AL cor rectly Follow these steps to set NI AL 1 Slide the battery compartment cover in the direc tion of the arrow to remove it 2 Remove any installed batteries 3 Set NI AL a...

Page 7: ...ickel metal hy dride batteries Cautions Use only fresh batteries of the required size and recommended type Do not mix old and new batteries different types of batteries standard alkaline or recharge a...

Page 8: ...ust charge them You can charge the batteries while they are in the battery compartment using a battery charger such as RadioShack Cat No 23 349 not supplied Or you can use an optional external battery...

Page 9: ...s not apply to Ni MH batteries To prevent damage to rechargeable batteries never charge them in an area where the temper ature is above 122 F 50 C or below 32 F 0 C Do not overcharge batteries Overcha...

Page 10: ...se a power source that supplies 13 8 volts 12 volt nominal at 1300 mA Its center tip must be set to positive and its plug must fit the TRC 239 s POWER jack Using a power source that does not meet thes...

Page 11: ...apter neither supplied Both are available at your local Ra dioShack store Cautions You must use a power supply that sup plies 13 8V DC and delivers at least 1300 mA Its fused connecting cord s center...

Page 12: ...ter to the power supply s cord setting TIP to positive 2 Plug the barrel plug into the TRC 239 s POWER jack 3 Connect the other end of the power cord to your vehicle s cigarette lighter socket 4 Plug...

Page 13: ...ector makes it easy to connect other types of antennas too For mobile or base station use you might want to connect an optional external antenna Your local RadioShack store carries a wide selection of...

Page 14: ...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 Follow all cautions and warni...

Page 15: ...ase the volume to a comfortable listening level You might hear a hiss if there is no signal on the selected channel 3 Press CH 9 or 8 until the desired channel appears on the display To move rapidly t...

Page 16: ...ches from your mouth Hold down PTT push to talk and speak into the microphone on the front of the CB in a normal voice TX BATT lights 4 When you finish speaking release PTT Important Channels 9 and 19...

Page 17: ...calling for additional materials or coordinating the activities of differ ent work crews For security officers a CB is more than a conve nience it is a must for both safety and effi ciency Personal U...

Page 18: ...ng back at camp CB Courtesy 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 min...

Page 19: ...0 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 com pleted st...

Page 20: ...tion 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 nee...

Page 21: ...pe and quality of antenna used the height of the antenna s mounting location the higher the antenna the greater the signal s range the surrounding terrain mountains and tall buildings limit the range...

Page 22: ...can damage circuit boards and cases and can cause the CB to work improperly Use only fresh batteries of the re quired size and recommended type Batteries can leak chemicals that damage your CB s elec...

Page 23: ...n with 80 modulation 700 1300 mA without modulation 500 850 mA GENERAL Power Requirements 12V DC or 9 AA batteries Operating Temperature Range 0 to 140 F 18 to 60 C Size and Type of Batteries AA Alkal...

Page 24: ...e the product and the RadioShack sales receipt as proof of pur chase date to any RadioShack store RadioShack will at its op tion unless otherwise provided by law a correct the defect by product repair...

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