Radio Shack TRC-239 User's Manual
Contents
1. 2000 Tandy Corporation All Rights Reserved RadioShack and Adaptaplug are registered trademarks used by Tandy Corporation F AID Zs e 21 1628 fm Page 3 Tuesday January 25 2000 9 30 AM e 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 a ae Zs 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 Unauthorized internal adjustments and or modifica 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 e Never open your CB s case e Never modify your CB Your CB might cause TV2. Pa on 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 RadioShack 4 49 AID Zs A 21 1628 fm Page 2 Tuesday January 25 2000 9 30 AM e 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 personnel Its features include Maximum Allowable Power lets you transmit at the maximum legal level 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 transmissions TX BATT Transmit Battery Low Indicator lights when the TRC 239 transmits and when you should replace or recharge the batteries Long Battery Life reduces the need for replace ment or recharging Extends your talk time Built in Charging Jack lets you recharge option al nickel cadmium Ni Cd or nickel metal hydride Ni MH batteries inside the TRC 239
3. eeeeceeeseeeeeeeeeeeeeeeeeeenees 18 Using Common 10 Codes ssscseccsseesseseeeneee 19 Maximum Range eeeeeeeeeeeeeeneeereneeteeneeeee 21 Care and Maintenance ssssssessensennnnnnnnnennnnnnene 22 Specifications sisisi sni iann osa raien 23 a F AID A 21 1628 fm Page 6 Tuesday January 25 2000 9 30 AM A PREPARATION POWERING THE CB You can power your TRC 239 from any of these sources e internal batteries not supplied e vehicle battery power using an optional adapter household AC power using an optional adapter Using the POWER Jack and NI AL Switch The POWER 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 rechargeable batteries not supplied while they are in the TRC 239 Before con necting anything 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 NIVAL as follows e Set it to AL to use alkaline batteries e Fe Zs 21 1628 fm Page 7 Tuesday January 25 2000 9 30 AM e 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
4. 62 Unable to copy use telephone 10 70 Fire at Note Although this table lists the 10 codes mean ings in the form of a statement they can also be phrased as questions 10 6 Are you busy 10 20 What is your location i L p e AID Zs e 21 1628 fm Page 21 Tuesday January 25 2000 9 30 AM e MAXIMUM RANGE The maximum range and quality of CB transmissions vary depending on the following typical conditions e the type and quality of antenna used the height of the antenna s mounting location the higher the antenna the greater the signal s range e the surrounding terrain mountains and tall buildings limit the range e weather conditions e the number of nearby CBs operating on the same channel 21 e YVA 21 1628 fm Page 22 Tuesday January 25 2000 9 30 AM CARE AND MAINTENANCE Your RadioShack TRC 239 40 Channel 4 Watt CB Walkie Talkie is an example of superior design and craftsmanship The following suggestions will help you care for your CB so you can enjoy it for years Keep the CB dry If it gets wet wipe it dry immediately Liquids might con tain minerals that can corrode the electronic circuits Keep the CB away from dust and dirt which can cause premature wear of parts Handle the CB gently and carefully Dropping it can damage circuit boards and cases and can cause the CB to work improperly Use only fresh batteries of the re quired size an
5. or radio interference even when it is operating properly To determine whether your CB is causing the interference turn off your CB If the interference goes away your CB is causing it Try to eliminate the interference by either moving your CB away from the receiver or contacting your lo cal RadioShack store for help If you cannot elimi nate the interference the FCC requires that you stop using your CB e a Ga Page 5 Tuesday January 25 2000 9 30 AM e CONTENTS Preparation ssssssesnsennnnonnnnnunnnnnnnnnnnnnnnnnnnnnnnnnnnnnnne 6 Powering the CB c esscesseeeeeeeeseeteneeeeeetneees 6 Using the POWER Jack and NAL Switch isisisi 6 Using Batteries eieren 7 Using Non Rechargeable Batteries 7 Using Rechargeable Batteries 8 Charging Tips eeeeseeesseeeeeeseteeeteeeneees 9 Using Vehicle Battery Power esce 10 Using AC POWE ceecceecesseeeeeeeneeeteeteeeeaees 11 Connecting the Antenna s es 12 Connecting an Optional Antenna 13 OPGraAtiOn csccccieccesdteciessccessnctecisecesctscesesceseicesevans 15 Receiving Transmissions and Adjusting Squelch c ccccessscceeseteeeeeteees 15 Transmitting espions aia n aa ee 15 CB Operation TipS ccsecseeceseeseeeeseesseeneeeeneee 17 Typical Uses For a CB Radio 00 17 Business Uses 00 eeeeeeseeeeesteeeeereereeees 17 Personal USES eeseeseeeeeseeeeenteeeeeees 17 CB Courtesy
6. the event of a product defect during the warranty period take 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 without charge for parts and labor b replace the product with one of the same or similar design or c refund the purchase price All replaced parts and products and products on which a refund is made become the property of RadioShack New or reconditioned parts and products may be used in the per formance of warranty service Repaired or replaced parts and products are warranted for the remainder of the original warranty period You will be charged for repair or replacement of the prod uct made after the expiration of the warranty period This warranty does not cover a damage or failure caused by or attributable to acts of God abuse accident misuse improper or abnormal usage failure to follow instructions improper installa tion or maintenance alteration lightning or other incidence of ex cess voltage or current b any repairs other than those provided by a RadioShack Authorized Service Facility c consumables such as fuses or batteries d cosmetic damage e transporta tion shipping or insurance costs or f costs of product removal installation set up service adjustment or reinstallation This warranty gives you specific legal rights and you may also h
7. 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 Cautions e 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 able or rechargeable batteries of different capacities or type Using Non Rechargeable Batteries Follow these steps to install non rechargeable batter ies 1 Slide the battery compartment cover in the direc tion of the arrow to remove it 2 Place the batteries in the compartment as indi cated by the polarity symbols and marked inside 3 Replace the cover e Zs 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 Be fore you use them for the first time you must charge them You can charge the batteries whi
8. arge batteries Overcharging can severely reduce the batteries useful life Always disconnect the charger s AC plug before you disconnect the barrel plug Important This CB can use nickel cadmium rechargeable batteries At the end of a nickel cadmium bat tery s useful life it must be recycled or disposed of properly Contact your local county or state hazard ous waste management authorities for information on recycling or disposal programs in your area or call 1 800 843 7422 Some options that 9 49 AID Zs e 21 1628 fm Page 10 Tuesday January 25 2000 9 30 AM e 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 Cautions You must use 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 these specifications could damage the TRC 239 or the power cord e Always connect the fused power cord to the TRC 239 before you connect it to the power source When you fini
9. ary 25 2000 9 30 AM e 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 service 10 8 In service 10 9 Repeat message 10 10 Transmission com pleted standing by 10 11 Talking to 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 locationis__ 10 21 Call by telephone 10 22 Report in person to o e AID Zs e 21 1628 fm Page 20 Tuesday January 25 2000 9 30 AM e Code Meaning 10 23 Please stand by 10 25 Can you contact 10 26 Disregard last informa tion 10 27 lam moving to channel__ 10 28 Identify your station 10 32 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 j 10 50 Break channel 10
10. ave other rights which vary from state to state RadioShack Customer Relations 200 Taylor Street 6th Floor Fort Worth TX 76102 We Service What We Sell 12 99 937568 01A00 Printed in Thailand FF
11. d recommended type Batteries can leak chemicals that damage your CB s electronic parts Wipe the CB with a damp cloth occa sionally to keep it looking new Do not use harsh chemicals cleaning solvents or strong detergents to clean the CB Modifying or tampering with the CB s internal com ponents can cause a malfunction and might invali date its warranty and void your FCC authorization to operate it If your CB is not performing as it should take it to your local RadioShack store for assistance 22 49 AID Zs e 21 1628 fm Page 23 Tuesday January 25 2000 9 30 AM e SPECIFICATIONS RECEIVER Frequency Coverage 26 965 to 27 405 MHz Audio Output 00 ec eeeeeeeeeee 400 mW 10 THD Intermediate Frequency 1st IF 10 695 MHz 2nd IF 455 kHz TRANSMITTER Frequency Coverage 26 965 to 27 405 MHz Output Power 0 4 Watts HI 1 Watt LOW Antenna Impedance seeren 50 Ohm Current Drain with 80 modulation ee 700 1300 mA without modulation eee 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 Alkaline Ni Cd or Ni MH Number of Batteries cccccccecceeceesessseeeeeeeeees 9 DC Input Jack ee Type M Adaptaplug adapter with tip positive Specifications are typical individual un
12. f when you are calling for additional materials or coordinating the activities of differ ent work crews e For security officers a CB is more than a conve nience it is a must for both safety and effi ciency Personal Uses 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 e If you are a two or more car family CBs are great for inter car communications while family members are going places Contact friends or neighbors find out what s happening or plan a get together 17 e Zs 21 1628 fm Page 18 Tuesday January 25 2000 9 30 AM e 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 e Wait for a pause in someone else s transmission before you ask for a break e If you do not receive an answer to your call after a second attempt sign off and wait several min utes before trying again e Do not hold down PTT called dead keying when you are not talking e Assist callers with directions information about road conditions and any other reasonable requests 18 AID Zs A 21 1628 fm Page 19 Tuesday Janu
13. its might vary Specifications are subject to change and improve ment without notice o A E 21 1628 fm Page 24 Tuesday January 25 2000 9 30 AM Limited Ninety Day Warranty This product is warranted by RadioShack against manufacturing defects in material and workmanship under normal use for ninety 90 days from the date of purchase from RadioShack company owned stores and authorized RadioShack franchisees and deal ers EXCEPT AS PROVIDED HEREIN RadioShack MAKES NO EXPRESS WARRANTIES AND ANY IMPLIED WARRANTIES INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE LIMITED IN DURATION TO THE DURATION OF THE WRITTEN LIMITED WARRANTIES CONTAINED HEREIN EXCEPT AS PROVIDED HEREIN Ra dioShack SHALL HAVE NO LIABILITY OR RESPONSIBILITY TO CUSTOMER OR ANY OTHER PERSON OR ENTITY WITH RE SPECT TO ANY LIABILITY LOSS OR DAMAGE CAUSED DI RECTLY OR INDIRECTLY BY USE OR PERFORMANCE OF THE PRODUCT OR ARISING OUT OF ANY BREACH OF THIS WARRANTY INCLUDING BUT NOT LIMITED TO ANY DAM AGES RESULTING FROM INCONVENIENCE LOSS OF TIME DATA PROPERTY REVENUE OR PROFIT OR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES EVEN IF RadioShack HAS BEEN ADVISED OF THE POSSIBIL ITY OF SUCH DAMAGES Some states do not allow limitations on how long an implied war ranty lasts or the exclusion or limitation of incidental or conse quential damages so the above limitations or exclusions may not apply to you In
14. le 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 charger not supplied Warning Do not try to charge non rechargeable bat teries They might get very hot and they could ex plode Follow these steps to charge nickel cadmium or nickel metal hydride batteries in the TRC 239 s bat tery compartment 1 Rotate VOLUME upward until it clicks 2 Set the battery charger s Ni Cd Ni MH selector switch to the appropriate position 3 Insert the charger s barrel plug into the TRC 239 s POWER jack F Z A 21 1628 fm Page 9 Tuesday January 25 2000 9 30 AM A 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 recharge the batteries This helps restore and maintain the ability of the bat teries to take a maximum charge This does 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 overch
15. nas 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 external mobile or outdoor base station antennas Choose the one that best meets your needs When deciding on a mobile or base station antenna and its location consider the following The location of the antenna should be as high as possible The antenna and antenna cable should be as far as possible from sources of electrical noise appliances other radios and so on The antenna should be vertical for the best per formance 13 e Zs 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 e Do not run the cable over sharp edges or mov ing parts e Do not run the cable next to power cables or other CB antenna cables e Do not run the cable through a vehicle s engine compartment or other areas that produce extreme heat e Follow all cautions and warnings included with the antenna Warning When installing or removing a base station CB antenna u
16. nsmissions and Adjusting Squelch e 0 Zs 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 and the TRC 239 s range set PWR HI LO 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 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 are reserved for motorist assistance and for reporting emergency information about accidents hazardous road conditions and so on Always give emergency communications priority on Channels 9 and 19 5 To turn off the TRC 239 rotate VOLUME upward until it clicks 16 AID Zs e 21 1628 fm Page 17 Tuesday January 25 2000 9 30 AM e 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 e 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 itsel
17. se extreme caution If the antenna starts to fall let it go It could contact overhead power lines If the antenna touches the power line contact with the antenna mast cable or guy wires can cause electrocution and death Call the power com pany to remove the antenna DO NOT attempt to do so yourself 14 F a Oan Page 15 Tuesday January 25 2000 9 30 AM e 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 W or A until the desired channel appears on the display To move rapidly through the channels hold down wor A 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 Tra
18. sh disconnect the fused power cord from the power source before you disconnect it from the TRC 239 If batteries are installed make sure NI AL inside the battery compartment is set to the correct position see Using Batteries on Page 7 10 Z A 21 1628 fm Page 11 Tuesday January 25 2000 9 30 AM A t Follow these steps to connect the TRC 239 to your vehicle s battery power LS ig 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 power cord that ends in a size M Adaptaplug adapter 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 tip must be set to positive and its plug must fit the TRC 239 s POWER jack Using a power supply that does not meet these specifi cations could damage the TRC 239 the power cord or the power supply Always connect the power supply to the TRC 239 before you connect it to AC power When Toe 498 Ap is 1 e 21 1628 fm Page 12 Tuesday January 25 2000 9 30 AM you finish disconnect the power supply from AC po
19. wer 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 the TRC 239 s POWER jack 3 Connect the other end of the power cord to your vehicle s cigarette lighter socket 4 Plug the power supply into a standard AC outlet then turn on the power supply before you turn on the TRC 239 CONNECTING THE ANTENNA Caution To prevent damage to your TRC 239 you must connect an antenna before you operate it Follow these steps to attach the supplied flexible an tenna to your TRC 239 Zs 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 most applications However the BNC connector makes it easy to connect other types of anten
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