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Cat. No. 21-1702
OWNER’S MANUAL
Please read before using this equipment.
TRC-502
40-Channel Mini Mobile CB Radio
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FEATURES
Your RadioShack TRC-502 40-Channel Mini Mobile CB Radio is a great way to communicate with other CB radio operators. Because of its convenient compact size, you can use it just about anywhere. You can mount it in a vehicle for mobile use, or in your home or office for use as a base station.
Your CB has these advanced features.
Up/Down Channel Selector — lets you easily select a channel with the press of a button.
TX (Transmit) Indicator — lights to show when the CB is transmitting.
Automatic Noise Limiter (ANL) Circuit
— reduces impulse-type noise during reception.
5-Pin Din Mic Connector — uses five prongs to reinforce a clear connection between the mic and the receiver.
Full Legal Power — gives you the full range of CB channels with the maximum allowed transmit power.
Adjustable Squelch — helps to eliminate noise between transmissions.
Automatic Modulation — prevents the transmitter signal from over-modulating and distorting.
(PLL) Frequency Synthesizer — provides highly accurate and stable tuning.
Crystal-Controlled Digital Tuning — provides precise transmission tuning capability when selecting a channel.
Two Ceramic Filters — provide superior channel selectivity and prevent adjacent channel interference.
Universal Mounting Bracket — lets you mount your CB securely in your vehicle, or on a table or shelf in your home or office.
External Antenna Jack — lets you attach an optional antenna to your CB radio for increased range.
We recommend you record your CB’s serial number here. The number is on the bottom of the CB.
Serial Number: ___________________
© 1998 Tandy Corporation.
All Rights Reserved.
RadioShack is a registered trademark used by Tandy Corporation.
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FCC INFORMATION
The Federal Communications Commission (FCC) does not require you to have a license to operate this CB radio. However, you must 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 radio.
Warning: Do not open your CB radio to make any internal adjustments. A CB radio is set up to transmit a regulated signal on an assigned frequency. It is against the law to alter or adjust the settings inside the unit to exceed these limitations.
To be safe and sure:
•never open your CB radio’s cases.
•never change or replace anything in your CB radio.
Your CB radio might cause TV or radio interference even when it is operating properly. To determine whether your CB radio is causing the interference, turn off your CB radio. If the interference goes away, your CB is causing it. Try to eliminate the interference by:
•moving your CB radio away from the TV or radio
•contacting your local RadioShack store for help
This device complies with Part 95 of FCC Rules. Operation is subject to the following two conditions: 1) this device may not cause harmful interference, and 2) this device must accept any interference received, including interference that may cause undesired operation.
If you can not eliminate the interference, the FCC requires that you stop using your CB radio.
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CONTENTS |
|
Installation ............................................................................................................... |
5 |
Mounting the Microphone Holder ....................................................................... |
5 |
Mounting the CB ................................................................................................. |
5 |
Connecting an Antenna ...................................................................................... |
6 |
Connecting the Microphone ................................................................................ |
7 |
Using Vehicle Battery Power .............................................................................. |
8 |
Using the CB as a Base Station ......................................................................... |
8 |
Operation ............................................................................................................... |
10 |
Receiving Transmissions and Adjusting Squelch ............................................. |
10 |
Transmitting ...................................................................................................... |
11 |
Operational Hints .................................................................................................. |
12 |
Common Uses for a CB .................................................................................... |
12 |
Personal Uses ............................................................................................ |
12 |
Business Uses ........................................................................................... |
12 |
Transmission Courtesy ..................................................................................... |
12 |
Using Common 10-Codes ................................................................................ |
13 |
Maximum Range .............................................................................................. |
14 |
Reducing Noise ................................................................................................ |
14 |
Troubleshooting .................................................................................................... |
15 |
Care and Maintenance .......................................................................................... |
16 |
Replacing the Fuse ........................................................................................... |
17 |
Specifications ........................................................................................................ |
18 |
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INSTALLATION
MOUNTING THE MICROPHONE HOLDER
You can mount the microphone holder to either side of the CB or to another location near your receiver.
Caution: Do not mount the CB microphone holder where it could damage or interfere with the operation of any passive restraint safety device (an airbag or seat belt).
To mount the holder to either side of the CB, use the two supplied 1/8-inch (3-mm) machine screws, plain washers, and spring washers as shown to secure the holder.
Caution: Be careful not to drill into anything behind the mounting surface.
3.Mount the holder using the machine screws, spring washers, plain washers and nuts.
Mounting Surface
Note: If you cannot reach behind the mounting surface to attach the nuts to the machine screws, use the two supplied 1/8-inch (3-mm) screws and plain washers.
To mount the holder near the receiver in another location in your vehicle (such as a dashboard), or somewhere in your home or office, such as a nearby wall, follow these steps.
1.Using the holder as a template, mark the positions for the screw holes at the desired location.
2.At each marked position, drill a hole slightly smaller than the mounting screws.
MOUNTING THE CB
The most common mounting location for this CB is under a vehicle’s dashboard. However, if you use the TRC-502 as a base station in your home or office, you can place it on a desk, shelf, or table (see “Using the CB as a Base Station” on Page 8).
If you are mounting the CB in a vehicle, choose a location where:
•you can easily reach the CB.
•wires and cables are clear of the vehicle’s pedals and other moving parts.
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•the CB is not directly in front of heating vents.
•all wires and cables can reach their connection point.
Cautions:
•If you use the CB in a vehicle, mount it securely to avoid damage to the CB or vehicle or injury to passengers.
•Do not mount the CB where it could damage or interfere with the operation of any passive restraint safety device (an airbag or seatbelt).
Follow these steps to mount the CB using the supplied hardware.
1.Using the mounting bracket as a template, mark the positions for the screw holes on the mounting surface.
2.In each marked location, drill a hole slightly smaller than the two 1/5-inch (5-mm) mounting screws.
Caution: Be careful not to drill into objects behind the mounting surface.
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3.Mount the bracket to the mounting surface with the 1/5-inch (5-mm) mounting screws, spring washers, plain washers, and nuts.
Mounting
Surface
Note: If you cannot reach behind the mounting surface to attach the nuts on the bolts, use the 1/5-inch (5- mm) mounting screws and plain washers to secure the bracket.
4.Attach the CB to the mounting bracket using the two rubber washers and mounting knobs.
CONNECTING AN
ANTENNA
There are many different types of antennas for mobile CBs, each with its own benefits. You can choose one that best fits your needs. Your local RadioShack store sells a wide variety of antennas.
Note: If you are using this CB as a base station, see “Using the CB as a Base Station” on Page 8.
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