Radio Shack 40-CHANNEL User's Manual
Contents
1. 13 Reducing NOSE 14 HIERHER 15 Replacing Me FUSE iate aei hee e E 16 Speciiicationms 17 p VJ T 21 1701 fm Page 5 Thursday August 5 1999 12 50 PM INSTALLATION E MOUNTING THE MICROPHONE HOLDER Using a Phillips screwdriver and the supplied small screws and small metal washers attach the supplied microphone holder horizontally or vertically to either side of the CB il CONNECTING THE MICROPHONE Make sure the pins on the micro phone cable s plug are aligned with the holes in the CB s microphone jack on the front of transceiver and insert the plug into the jack To disconnect the microphone cable press and hold down the small tab on the microphone plug then pull out the plug il Caution Never pull on the microphone cable MOUNTING THE TRC 501 The most common mounting location for this CB is under a vehicle s dash board However if you use the TRC 501 as a base station you can place it on a desk shelf or table see Us ing the CB as a Base Station on Page 8 If you are mounting the CB in a vehi cle choose a location where You can easily reach the CB Wires and cables will not inter fere with the vehic2. 21 1701 fm Page 1 Thursday August 5 1999 12 50 PM e T Cat No 21 1701 OWNER S MANUAL Please read before using this equipment TRC 501 40 Channel 2 Way CB Radio RadioShack ae 2 NS 21 1701 fm Page 2 Thursday August 5 1999 12 50 PM INTRODUCTION Your RadioShack TRC 501 40 Channel 2 Way CB Radio is a high performance CB with the maximum legally allowable power and innova tive styling This CB is perfect for recreational business or emergency use You can call other people who have CBs at home in their vehicles or at camp sites You can also connect optional equipment to your CB such as an external PA speaker or a DC power supply and base station antenna to set up a base station in your home Your CB has these features PLL Phase Locked Loop Fre quency Synthesizer provides re liable and exact tuning using a precise frequency reference crystal Two Ceramic Filters provide su perior selectivity and prevent adja cent channel interference Hysteresis Squelch Circuit compensates for fading signals and eliminates signal chopping during re ception Automatic Noise Limiting ANL Circuit reduces noise caused by nearby electrical equipment such as motors or automotive ignition sys tems DOWN UP Channel Selector provides maximum convenience when selecting channels LED Display lets you easily see th
3. used The height of the antenna s mounting location the higher the antenna the better the sig nal s range The surrounding terrain mountains and tall buildings limit the range Weather conditions The number of nearby CBs operating on the same channel Standing wave ratio SWR between the antenna and the CB You can check the SWR between the CB and a mobile or base station antenna using an SWR tester Cat No 21 523 Follow the instructions supplied with the SWR tester and the mobile or base station antenna to change the SWR if neces sary 11 p Sp NS 21 1701 fm Page 12 Thursday August 5 1999 12 50 PM Using Common 10 Codes Code Meaning Citizen s band operators have largely 10 14 information adopted the 10 codes for standard questions and answers These 10 15 Message delivered codes permit faster communication and better intelligibility in noisy ar eas 10 17 En route 10 16 Reply to message These tables list the codes adopted 10 18 Urgent by the Associated Public Safety 10 19 Contact Communications Officers APCO 10 20 What is your location Code Meaning 10 21 Call by tele phone 10 1 Cannot understand your message 10 22 Cancel last message 10 2 Your signal is good 10 23 Arrived at the scene 10 3 Stop transmitting 10 24 Assignment complete 10 4 Message received and 10 26 Estimated
4. 12 50 PM REDUCING NOISE The Automatic Noise Limiting ANL circuit helps keep background noise to a minimum However strong sources of electrical noise such as your vehicle s ignition another radio or spark plugs might be more than the circuit can compensate for If you operate the TRC 501 with a ve hicle s engine off you should not have any problems with noise If you use the CB with the engine on you can determine the source of the noise by turning off the engine and operating the CB with the ignition set to ACC If most or all of the noise goes away the problem is in your ve hicle s ignition or electrical system Here are a few hints to help you re duce or eliminate such noise Replace old ignition wires with new high voltage noise sup pression wires Install noise suppressors on your spark plugs or install new spark plugs that have built in suppressors Be sure that the ground connec tion black wire is secure If problems persist check your alter nator generator regulator and gaug es Noise from these sources can be reduced or eliminated using bypass capacitors at various output voltage points Your local RadioShack store has a wide selection of noise suppression accessories p EA Sp NS 21 1701 fm Page 15 Thursday August 5 1999 12 50 PM B MAINTENANCE Your TRC 501 40 Channel 2 Way CB Radio is an example of superior design and craftsmanship T
5. time of arrival is understood 10 5 Relay information to 10 30 Use caution 10 31 Pick up 10 ES aim BHO you 10 33 Emergency traffic Clear busy the channel a e 10 34 What time is it 10 8 In service 10 9 Repeat last message 10 10 Negative No 10 11 in service 10 12 Stand by 10 13 Report conditions 12 p EA uu Page 13 Thursday August 5 1999 12 50 PM _ 9 B TROUBLESHOOTING id If your CB is not working as it should follow the suggestions below to see if you can eliminate the problem If you cannot take the CB to your local RadioShack store for assistance Symptom Check That The CB is turned on VOLUME is turned up SQUELCH is adjusted properly Trouble with reception The microphone is securely connected to the CB The antenna cable is securely connected to both the antenna and the CB Trouble with The CB is turned on transmission The microphone is securely connected to the CB All connectors are clean and tightened The antenna cable is securely connected to both the antenna and the CB You are fully pressing the microphone talk but ton CB does not work at all The power supply either vehicle or 12V DC is working and the in line fuse is not blown see Replacing the Fuse on Page 16 13 2 NS 21 1701 fm Page 14 Thursday August 5 1999
6. ct the CB s black wire to the DC power supply s negative terminal 3 Plug the power supply s cord into a standard AC outlet p VJ 21 1701 fm Page 9 Thursday August 5 1999 12 50 PM OPERATION e Before you start using your CB you should know how to use it effectively and courteously CB Operation Tips on Page 10 has information that will help you use and enjoy your CB RECEIVING TRANSMISSIONS AND ADJUSTING SQUELCH Caution Do not attempt to use your CB without first connecting an anten na to it 1 Turn SQUELCH fully counter clockwise il 2 To turn on the CB turn VOLUME clockwise until you hear it click and you hear a hissing sound The CB displays a channel num ber il 3 Turn SQUELCH clockwise until the hissing sound stops Note f the CB picks up unwanted partial or very weak transmissions turn SQUELCH clockwise to decrease the CB s sensitivity to these signals If you want to listen to a weak or distant station turn SQUELCH counterclockwise Adjust VOLUME to a comfortable listening level Press DOWN to select lower channel numbers or UP to select higher channel numbers The channel number appears on the display il Important Channel 9 is reserved for motorist assistance and for reporting emergency information about accidents hazardous road conditions and so on Always give emergency messages p
7. ctrical noise ignition systems gauges etc VJ E 21 1701 fm Page 7 Thursday August 5 1999 12 50 PM e Your local RadioShack store sells a variety of CB antennas for both mo bile and base station use coaxial antenna cable and connectors Connecting the Antenna Once you choose an antenna follow the mounting instructions supplied with it 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 contact over head 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 company to re move the antenna DO NOT attempt to do so yourself Then route the antenna cable to the CB and connect the cable to the AN TENNA jack on the back of the CB il Cautions Do not run the cable over sharp edges or moving parts 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 CONNECTING AN OPTIONAL EXTERNAL SPEAKER To make the CB easier to hear in noisy environments you can connect it to an external CB speaker Use 8 ohm speaker capable of handling 3 5 watts of power such as Ra dioShack Cat No 21 549 The speaker s cable must have a s inch plug Simp
8. e nnns 50 Ohm Current Drain 13 8 volt supply 1 Amp with No Modulation 1 6 Amps with 90 Maximum Modulation GENERAL Power Requirements 13 8 Volts DC Negative Ground DIMENSIONS anea ai peia naana pana nene 15 16 x 41 2 x 65 16 Inches HWD 83 x 114 x 160 mm 15 7 oz 445 g Specifications are typical individual units might vary Specifications are subject to change and improvement without notice 17 p Sp NS 21 1701 fm Page 18 Thursday August 5 1999 12 50 PM NOTES 18 p Sp NS 21 1701 fm Page 19 Thursday August 5 1999 12 50 PM 19 p Sp NS 21 1701 fm Page 20 Thursday August 5 1999 12 50 PM RadioShack Limited Warranty This product is warranted against defects for 90 days from date of purchase from RadioShack company owned stores and authorized RadioShack franchisees and deal ers Within this period we will repair it without charge for parts and labor Simply bring your RadioShack sales slip as proof of purchase date to any RadioShack store War ranty does not cover transportation costs Nor does it cover a product subjected to mis use or accidental damage EXCEPT AS PROVIDED HEREIN RadioShack MAKES NO EXPRESS WARRANTIES AND ANY IMPLIED WARRANTIES ARE LIMITED IN DURATION TO THE DURATION OF THE WRITTEN LIMITED WARRANTIES CONTAINED HEREIN Some states do not permit limitatio
9. e selected channel number Universal Mounting Bracket lets you mount your CB securely in your vehicle or on a table or shelf in your home Note To use this CB you need a mobile or base station antenna Your local Radio Shack store has a wide variety of antennas We recommend you record your CB s serial number here The num ber is on the CB s back panel Serial Number 1996 Tandy Corporation All Rights Reserved RadioShack is a trademark used by Tandy Corporation p VJ 21 1701 fm Page 3 Thursday August 5 1999 12 50 PM FCC INFORMATION e The Federal Communications Com mission FCC does not require you to have a license to operate this CB However the FCC does require you to read and know Part 95 of FCC Rules These rules apply to the oper ation of a Class D CB We have pro vided a copy of these regulations with your CB Warning Do not open your CB to make any internal adjustments Inter nal adjustments must be made only by authorized service personnel Internal adjustments and or modifi cations 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 your CB Your CB might cause TV or radio in terference even when it is operating properly To determine whether your CB is causing the interference tur
10. he following suggestions will help you care for your CB so you can enjoy it for years PN Keep the CB dry If it gets wet wipe it dry immediately Liquids might contain minerals that can corrode the electronic circuits Handle the CB gently and carefully Dropping it can damage cir cuit boards and cases and can cause the CB to work improperly SS Keep the CB away from dust and dirt which can cause premature wear of parts Wipe the CB with a damp cloth occasionally to keep it looking new Do not use harsh chemicals cleaning solvents or strong de tergents to clean the CB Modifying or tampering with the CB s internal components can cause a malfunc tion and might invalidate your CB s warranty and void your FCC authorization to operate it If your CB is not performing as it should take it to your local Ra dioShack store for assistance 15 Sp NS 21 1701 fm Page 16 Thursday August 5 1999 12 50 PM REPLACING THE FUSE The TRC 501 s 2 amp and 1 amp fuses help protect your CB from pow er surges and short circuits If the black wire s fuse is blown replace it with a 2 amp fast act ing glass fuse Cat No 270 1007 If the orange wire s fuse is blown replace it with a 1 amp fast acting glass fuse Cat No 270 1005 Follow these steps to check and re place each fuse if necessary il Make sure the power source and CB are both turned off To open the fuse holder push the f
11. le s pedals or other moving parts The CB is not directly in front of heating vents All wires and cables will reach their connection points Caution If you use the TRC 501 ina vehicle mount it securely to avoid damage to the CB or vehicle during sudden starts or stops KA EA Sp NS 21 1701 fm Page 6 Thursday August 5 1999 12 50 PM T Follow these steps to mount the CB 4 Attach the CB to the mounting using the supplied hardware bracket using the rubber wash 1 Using the mounting bracket as a BIS template mark the positions for the three screw holes il il 2 In each marked location drill a hole slightly smaller than the supplied large screws CONNECTING AN Caution Be careful not to drill ANTENNA into anything behind the mount ing surface Caution To prevent damage to your 3 Using a Phillips screwdriver CB you must connect an antenna to attach the mounting bracket to the CB before you operate it the mounting surface with the large screws and supplied lock Selecting an Antenna washers Although this CB is designed for mo bile use you can also use it as a base station When deciding on a il mobile or base station antenna and its location consider these points For the best performance the antenna should be vertical and located as high as possible The antenna and antenna cable should be as far as possible from sources of ele
12. ly plug the speaker cable into the CB s EXT 8Q jack il Speaker Cable Note When you connect an external speaker the CB s internal speaker automatically disconnects p VJ 21 1701 fm Page 8 Thursday August 5 1999 12 50 PM CONNECTING POWER You can power this CB from your ve hicle s battery or from standard AC power with an optional DC power supply such as Cat No 22 120 Using Vehicle Battery Power il 1 Connect the CB s red wire with in line fuse to a source of volt age that turns on and off with the ignition switch such as a spare accessory terminal in your vehi cle s fuse box 2 Connect the CB s orange wire with in line fuse to a source of voltage that supplies constant positive power or directly to your vehicle s positive bat tery terminal This connection is for memory back up 3 Connect the CB s black wire to your vehicle battery s negative terminal or a metal part of the vehicle s frame that is not insulated from the frame by a plastic part Using the CB asa Base Station Caution Most 12 volt DC power supplies plug into a standard AC out let to produce DC power Before con necting your CB to a 12 volt DC power supply read and follow the in structions provided with the power supply il 1 Connect the red and orange wires each with in line fuses to the DC power supply s positive terminal 2 Conne
13. n off your CB If the interference goes away your CB is causing the interfer ence Try to eliminate the interfer ence by Moving your CB away from the receiver Contacting your local Ra dioShack store for help If you cannot eliminate the interfer ence the FCC requires that you stop using your CB Sp VJ ep 21 1701 fm Page 4 Thursday August 5 1999 12 50 PM Bi CONTENTS DECIES 5 Mounting the Microphone Holder pp 5 Connecting the Microphone espores i ido aiaa eene 5 Mounting the TRC 501 5 Connecting an Antenna T 6 Selecting an Antenna pp 6 Connecting the Antenna Nt 7 Connecting an Optional External Speaker 7 Connecting nein eee eae m eee e eds 8 Using Vehicle Battery Power pp 8 Using the CB as a Base Station Nt 8 ICI 9 Receiving Transmissions and Adjusting Squelch 9 Transmitting 2 el ce eee i 10 CB Operation neo e ede aea 10 Common Uses for a CB Radio 10 CB GOuneSy xi WEE fun 11 Maximum Range nter te tB E 11 Using Common 10 Codes pp 12 Troubleshooting
14. n or exclusion of implied warranties therefore the aforesaid limita tion s or exclusion s may not apply to the purchaser This warranty gives you specific legal rights and you may also have other rights which vary from state to state We Service What We Sell 10 95 RadioShack A Division of Tandy Corporation Fort Worth Texas 76102 7A6 Printed in Thailand p a EA
15. riority on Channel 9 To turn off the TRC 501 turn VOLUME counterclockwise until you hear it click p VJ 21 1701 fm Page 10 Thursday August 5 1999 12 50 PM TRANSMITTING We recommend you try receiving transmissions before you transmit 1 Follow Steps 1 5 under Receiv ing Transmissions and Adjusting Squelch 2 Hold the microphone 2 or 3 inches from your mouth Then press and hold down the micro phone talk button and speak into the microphone in a normal voice The TX indicator turns on il Note Do not speak too loudly when transmitting It does not make your signal any stronger and might distort your transmis sion 3 When you finish transmitting release the microphone talk but ton The TX indicator turns off You can now receive transmis sions 4 To turn off the TRC 501 turn VOLUME counterclockwise until you hear it click CB OPERATION TIPS Like most activities CB radio has its customs and courtesies The follow ing tips will help you get the most en joyment from your CB Common Uses for a CB Radio Business Uses Truck drivers and delivery per sonnel can learn road and traffic conditions and get assistance in locating destinations A CB is also good company on those long hauls On construction crews a CB quickly pays for itself when you are calling for additional materi als or coordinating the activities of different wo
16. rk crews For security officers a CB is more than a convenience 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 If you are a two car or more family CBs are great for com municating with family members while they are in their cars p EA VJ 21 1701 fm Page 11 Thursday August 5 1999 12 50 PM e Contact friends or neighbors find out what s happening or plan a get together Ever have car trouble or run out of gas on the highway What an assurance it is to be able to radio for assistance Camping fishing and other sports are more fun with a CB Locate 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 sev eral minutes before trying again Do not hold down the micro phone talk button when you are not talking This is called dead keying Assist callers with directions information about road condi tions and any other reasonable requests Maximum Range The maximum range and quality of CB transmissions vary depending on these conditions The type and quality of antenna
17. use holder ends together then turn either end counter clockwise and release it If the fuse is blown replace it Caution Make sure you replace the fuse only with another fuse of the same type and rating To close the fuse holder push the fuse holder ends together then turn either end clockwise Sp NS 21 1701 fm Page 17 Thursday August 5 1999 12 50 PM B SPECIFICATIONS RECEIVER Frequency All 40 CB Channels Class D 26 965 to 27 405 MHz Sensitivity cete eere Eres 0 7 uV or better for 10 dB S N N Adjacent Channel Rejection pp 55dB Audio Output eciam eedem tenen 3 Watts Minimum Frequency Response 6 dB at 450 2500 Hz Intermediate Frequency Nt 1st 10 695 MHz 2nd 455 kHz Gloss Modulation aseinani tnt pet eor ee et 50 dB Adjustable from 0 5 uV to 1 mV TRANSMITTER Frequency All 40 CB Channels Class D 26 965 to 27 405 MHz PE 4 Watts FCC Maximum Type of Modulation AM Double Sideband Full Carrier Modulation Modulation Capability essen nennen 90 SPUNOUS EMISSION 5 02 2 etri 60 dB Frequency Tolerance pp 200 Hz Antenna Impedance sssssssseseeeeeee eene nnn
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