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21-1701.fm Page 1 Thursday, August 5, 1999 12:50 PM
Cat. No. 21-1701
OWNER’S MANUAL
Please read before using this equipment.
TRC-501
40-Channel 2-Way CB Radio
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21-1701.fm Page 2 Thursday, August 5, 1999 12:50 PM INTRODUCTION Your RadioShack TRC-501 40- Automatic Noise Limiting (ANL) Channel 2-Way CB Radio is a high — reduces noise caused by Circuit performance CB with the maximum nearby electrical equipment such as legally allowable power and innova- motors or automotive ignition sys- tive styling. tems. This CB is perfect for recreational, — DOWN/UP Channel Selector business, or emergency use. You provides maximum convenience can call other peop
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21-1701.fm Page 3 Thursday, August 5, 1999 12:50 PM FCC INFORMATION The Federal Communications Com- Your CB might cause TV or radio in- mission (FCC) does not require you terference even when it is operating to have a license to operate this CB. properly. To determine whether your However, the FCC does require you CB is causing the interference, turn to read and know Part 95 of FCC off your CB. If the interference goes Rules. These rules apply to the oper- away, your CB is causing the interf
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21-1701.fm Page 4 Thursday, August 5, 1999 12:50 PM CONTENTS Installation ........................................................................................................5 Mounting the Microphone Holder ................................................................5 Connecting the Microphone ........................................................................5 Mounting the TRC-501 ................................................................................5 Connecting an An
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21-1701.fm Page 5 Thursday, August 5, 1999 12:50 PM INSTALLATION Never pull on the Caution: MOUNTING THE microphone cable. MICROPHONE HOLDER Using a Phillips screwdriver and the MOUNTING THE supplied small screws and small metal washers, attach the supplied TRC-501 microphone holder horizontally or vertically to either side of the CB. 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
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21-1701.fm Page 6 Thursday, August 5, 1999 12:50 PM Follow these steps to mount the CB 4. Attach the CB to the mounting using the supplied hardware. bracket using the rubber wash- ers and mounting knobs. 1. Using the mounting bracket as a 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. C
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21-1701.fm Page 7 Thursday, August 5, 1999 12:50 PM Your local RadioShack store sells a • Do not run the cable next to variety of CB antennas (for both mo- power cables or other CB bile and base-station use), coaxial antenna cables. antenna cable, and connectors. • Do not run the cable through a vehicle’s engine compartment or other areas that produce Connecting the Antenna extreme heat. Once you choose an antenna, follow the mounting instructions supplied with it. CONNECTING AN OPTIONAL EXT
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21-1701.fm Page 8 Thursday, August 5, 1999 12:50 PM Using the CB as a CONNECTING POWER Base Station You can power this CB from your ve- Caution: hicle’s battery or from standard AC Most 12-volt DC power power with an optional DC power supplies plug into a standard AC out- supply (such as Cat. No. 22-120). let to produce DC power. Before con- necting your CB to a 12-volt DC power supply, read and follow the in- Using Vehicle Battery Power structions provided with the power supply. (il- (il- 1.
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21-1701.fm Page 9 Thursday, August 5, 1999 12:50 PM OPERATION Before you start using your CB, you If the CB picks up Note: should know how to use it effectively unwanted, partial, or very weak and courteously. “CB Operation transmissions, turn SQUELCH Tips” on Page 10 has information clockwise to decrease the CB’s that will help you use and enjoy your sensitivity to these signals. If CB. you want to listen to a weak or distant station, turn SQUELCH counterclockwise. RECEIVING 4. Adjust VOL
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21-1701.fm Page 10 Thursday, August 5, 1999 12:50 PM TRANSMITTING CB OPERATION TIPS We recommend you try receiving Like most activities, CB radio has its transmissions before you transmit. customs and courtesies. The follow- ing tips will help you get the most en- 1. Follow Steps 1–5 under “Receiv- joyment from your CB. ing Transmissions and Adjusting Squelch.” Common Uses for a CB 2. Hold the microphone 2 or 3 Radio inches from your mouth. Then press and hold down the micro- Business Uses
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21-1701.fm Page 11 Thursday, August 5, 1999 12:50 PM • Contact friends or neighbors — Maximum Range find out “what’s happening” or plan a get-together. The maximum range and quality of CB transmissions vary depending on • Ever have car trouble or run out these conditions: of gas on the highway? What an assurance it is to be able to • The type and quality of antenna radio for assistance! used. • Camping, fishing, and other • The height of the antenna’s sports are more fun with a CB. mounting l
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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 10-16 Reply to message. and better intelligibility in noisy ar- eas. 10-17 En route. 10-18 Urgent. These tables list the codes adopted by the Associated Public Safety 10-19 Contact ____________. Communications Officers (APCO).
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21-1701.fm Page 13 Thursday, August 5, 1999 12:50 PM TROUBLESHOOTING 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: Trouble with reception • The CB is turned on. VOLUME • is turned up. SQUELCH • is adjusted properly. • The microphone is securely connected to the CB. • The antenna cable is securely connected to both the antenna and the
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21-1701.fm Page 14 Thursday, August 5, 1999 12:50 PM Here are a few hints to help you re- REDUCING NOISE duce or eliminate such noise: The Automatic Noise Limiting (ANL) • Replace old ignition wires with circuit helps keep background noise new, high-voltage, noise-sup- to a minimum. However, strong pression wires. sources of electrical noise (such as • Install noise suppressors on your vehicle’s ignition, another radio, your spark plugs, or install new or spark plugs) might be more than spark
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21-1701.fm Page 15 Thursday, August 5, 1999 12:50 PM MAINTENANCE Your TRC-501 40-Channel 2-Way CB Radio 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 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 improp
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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- 1. Make sure the power source and CB are
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21-1701.fm Page 17 Thursday, August 5, 1999 12:50 PM SPECIFICATIONS RECEIVER Frequency Coverage............................................ All 40 CB Channels (Class D) 26.965 to 27.405 MHz Sensitivity ..................................................... 0.7 μV or better for 10 dB (S+N)/N Adjacent Channel Rejection........................................................................55 dB Audio Output .........................................................................3 Watts (Min
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21-1701.fm Page 18 Thursday, August 5, 1999 12:50 PM NOTES 18
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21-1701.fm Page 19 Thursday, August 5, 1999 12:50 PM 19
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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
