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21-1628.fm Page 1 Tuesday, January 25, 2000 9:30 AM
Cat. No. 21-1628
OWNER’S MANUAL
Please read before using this equipment.
TRC-239
40-Channel, 4-Watt
CB Walkie-Talkie
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21-1628.fm Page 2 Tuesday, January 25, 2000 9:30 AM FEATURES Your RadioShack TRC-239 40-Channel, 4-Watt CB Walkie-Talkie is a portable, easy-to-use, two-way ra- dio that you can carry almost anywhere. It will give you reliable communications in many different appli- cations. You can use your TRC-239 around the house, in your office, car or boat or anywhere on the go. It is useful on fishing and camping trips. Or in your busi- ness for security patrols, for supervisors, or ware- house personne
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21-1628.fm Page 3 Tuesday, January 25, 2000 9:30 AM Rotary Volume and Squelch Controls — mean faster, easier operation under virtually any condition. Automatic Modulation Limiter — 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 indicate that the TRC-239 is charging your optional rechargeable bat- teries. 3
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21-1628.fm Page 4 Tuesday, January 25, 2000 9:30 AM FCC INFORMATION The Federal Communications Commission (FCC) does not require you to have a license to operate this CB. 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 CB. Warning: Do not open your CB to make any internal adjustments. Any internal adjustments can be made only by an authorized service technician
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21-1628.fm Page 5 Tuesday, January 25, 2000 9:30 AM CONTENTS Preparation ........................................................... 6 Powering the CB ............................................. 6 Using the POWER Jack and NI/AL Switch ............................................ 6 Using Batteries ............................................... 7 Using Non-Rechargeable Batteries ......... 7 Using Rechargeable Batteries ................. 8 Charging Tips .......................................
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21-1628.fm Page 6 Tuesday, January 25, 2000 9:30 AM PREPARATION POWERING THE CB You can power your TRC-239 from any of these sources: • internal batteries (not supplied) • vehicle battery power (using an optional adapter) • household AC power (using an optional adapter) Using the POWER Jack and NI/AL Switch POWER The jack lets you connect an external power source (such as your vehicle’s battery) or an external AC adapter (not supplied), or an external charger (not supplied) to charge rechar
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21-1628.fm Page 7 Tuesday, January 25, 2000 9:30 AM •Set NI/AL to NI to use rechargeable batteries inside the TRC-239 Warning: To avoid injuring yourself or damaging the TRC-239, connect a battery charger to POWER only when using Ni-Cd or Ni-MH batteries. USING BATTERIES Your TRC-239 can use 9 AA batteries (not supplied) for power. For the best performance and longest life, we recommend RadioShack non-rechargeable alka- line or rechargeable nickel-cadmium/nickel-metal hy- dride batteries. Cau
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21-1628.fm Page 8 Tuesday, January 25, 2000 9:30 AM When the TX/BATT indicator lights steadily or the TRC-239 stops operating properly, replace the bat- teries. Warning: Dispose of old batteries promptly and properly. Do not burn or bury them. Caution: If you do not plan to use the TRC-239 with internal batteries for several months, remove the bat- teries. Batteries can leak chemicals that can destroy electronic parts. Using Rechargeable Batteries Rechargeable batteries come fully discharged.
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1 - 8 0 0 - 8 21-1628.fm Page 9 Tuesday, January 25, 2000 9:30 AM 4. Plug the charger's other end into a standard AC outlet. It takes 14–16 hours to recharge Ni-MH batter- ies or 7–8 hours to recharge Ni-Cd batteries that are fully discharged. 5. When the batteries are fully charged, unplug the charger from the AC outlet, then disconnect the charger from the CB. Charging Tips • Fully discharge Ni-Cd batteries occasionally by using the TRC-239 until the TX/BATT indicator lights, then fully rec
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21-1628.fm Page 10 Tuesday, January 25, 2000 9:30 AM might be available are: municipal curbside collection, drop-off boxes at retailers such as your local Ra- dioShack store, recycling collection centers, and mail-back programs. USING VEHICLE BATTERY POWER You can power the TRC-239 from a vehicle’s 12V power source (such as cigarette-lighter socket) using a fused DC power cord that ends in a size M Adapta- ® plug adapter (neither supplied). Both are available at your local RadioShack store.
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VOLUME SQUELCH TX/BATT CHARGE MIC CITIZENS BAND TRANSCEIVER 21-1628.fm Page 11 Tuesday, January 25, 2000 9:30 AM Follow these steps to connect the TRC-239 to your vehicle’s battery power. 1. Plug the power cord’s Adaptaplug into the TRC- 239’s POWER jack. 2. Connect the other end of the power cord to your vehicle’s cigarette lighter socket. USING AC POWER You can power the TRC-239 using an optional DC power supply that provides 13.8 volts (12-volt nomi- nal) at 1300 mA. You also need a fused
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21-1628.fm Page 12 Tuesday, January 25, 2000 9:30 AM you finish, disconnect the power supply from AC power before you disconnect the power cord from the TRC-239. If batteries are installed for portable use, make sure NI/AL inside the battery compartment is set to the correct position (see “Using Batteries” on Page 7). Follow these steps to connect the TRC-239 to AC power. 1. Connect the Adaptaplug adapter to the power supply’s cord, setting TIP to + (positive). 2. Plug the barrel plug into th
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21-1628.fm Page 13 Tuesday, January 25, 2000 9:30 AM 1. Align the slots around the antenna’s connector with the tabs on the antenna jack on top of the TRC-239. 2. Press the antenna down over the jack and turn the antenna’s base clockwise until it locks. To remove the antenna, turn the antenna’s base counterclockwise until it unlocks, then lift it off the an- tenna jack. Connecting an Optional Antenna The TRC-239 comes with a flexible antenna (equipped with a BNC connector) that is ideal for m
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21-1628.fm Page 14 Tuesday, January 25, 2000 9:30 AM Note: When connecting an optional antenna, always use 50-ohm coaxial cable such as RG-58. For lengths over 50 feet, use low-loss RG-8 coaxial ca- ble. When the cable terminates in a PL-259 connec- tor, obtain an adapter to fit the BNC connector. Follow the installation instructions supplied with the antenna, route the antenna cable to the TRC-239, then connect it to the antenna jack. Cautions: • Do not run the cable over sharp edges or mov-
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21-1628.fm Page 15 Tuesday, January 25, 2000 9:30 AM 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. VOLUME 2. Rotate toward the bottom of the CB until it clicks. The CB turns on and a ch
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21-1628.fm Page 16 Tuesday, January 25, 2000 9:30 AM 2. Based on your desired transmitting range, set the power level as follows. • To increase the transmitted signal strength PWR HI/LO and the TRC-239's range, set to HI . • To decrease the transmitted signal strength (to prevent overloading a nearby CB) and save battery power, set PWR HI/LO to LO. 3. Hold the CB 2 to 3 inches from your mouth. Hold PTT down (push to talk) and speak into the microphone on the front of the CB in a normal voic
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21-1628.fm Page 17 Tuesday, January 25, 2000 9:30 AM CB OPERATION TIPS Like most activities, CB radio users have customs and courtesies. The following tips will help you get the most enjoyment out of your CB. TYPICAL USES FOR A CB RADIO Business Uses • Truck drivers and delivery personnel can learn road and traffic conditions and get assistance in locating destinations. A CB is also good com- pany on these “long hauls.” • Used by construction crews, a CB quickly pays for itself when you are c
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21-1628.fm Page 18 Tuesday, January 25, 2000 9:30 AM • Ever have car trouble or run out of gas on the highway? With your CB you can have peace of mind knowing you can call for assistance. • Camping, fishing, and other sports are more fun with a CB. Keep in touch with a buddy or find out “what's cooking” 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
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21-1628.fm Page 19 Tuesday, January 25, 2000 9:30 AM USING COMMON 10-CODES Citizen’s Band operators have largely adopted the 10-codes for standard questions and answers. These codes permit faster communication and better intelligibility in noisy areas. While not all codes are . listed, most of the more popular ones 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 servi
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21-1628.fm Page 20 Tuesday, January 25, 2000 9:30 AM Code Meaning 10-23 Please stand by. 10-25 Can you contact____. 10-26 Disregard last informa- 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 needed at______ 10-41 Please turn to channel_____. 10-42 Traffic accident at_____. 10-43 Traffic tie-up at____. 10-50 Break channel. 10-62 Una
