Radio Shack TRC-501 User Manual
21-170 1.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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INTRODUCTION
Your RadioShack TRC-501 40Channel 2-Way CB Radio is a high
performance CB with the maximum
legally allowable power and innovative 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) Frequenc
liable and exact tuning using a
precise frequency reference crystal.
Two Ce ramic Filter s
perior selectivity and prevent adjacent-channel interference.
nthesizer
— prov ide s re -
— provide su-
Automatic Noise Limitin
Circuit
nearby electrical equipme nt such as
motors or automotive ignition systems.
DOWN/UP Channel Selector
provides maximum convenience
when selecting channels.
LED Displa
the selected channel number.
Universal Mountin
lets you mount your CB securely in
your vehicle or on a table or shelf in
your home.
Note:
mobile or base station antenna. Your
local Radio Shack store has a wide
variety of antennas.
— reduces noise cau sed by
lets you easily see
—
To use this CB, you need a
(ANL)
Bracket
—
—
H
steresis Squelch Circuit
compensates for fading signals and
eliminates signal chopping during reception.
RadioShack is a trademark used by Tandy Corporation.
2
—
© 1996 Tandy Corporation.
All Rights Reserved.
We recommend you record your
CB’s serial number here. The number is on the CB’s back panel.
Serial Number_________________
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FCC INFORMATION
The Federal Communications Commission (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
Rules
. These rules apply to the operation of a Class D CB. We have provided a copy of these regulations
with your CB.
Warnin
make any internal adjustments. Internal adjustments m ust be made only
by authorized service personnel.
Internal adjustments and/or modifications can lead to illegal operation
as defined b y Part 95 of
Such illegal operation can lead to
very serious consequences.
To be safe and sure:
• Never open your CB’s case.
• Never modify your CB.
Do not open your CB to
:
FCC Rules
FCC
Your CB might cause TV or radio interference even when it is operating
properly. To determine whether your
CB is causing the interference, turn
off your CB. If the in terference goes
away, your CB is causing the interference. Try to eliminate the interference by:
• Moving your CB away from the
receiver.
• Contacting your local RadioShack store for help.
If you cannot eliminate the interference, the FCC requires that you stop
using your CB.
.
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CONTENTS
Installation ........................................................................................................5
Mounting the Microphone Holder ................................................................5
Connecting the Microphone ........................................................................5
Mounting the TRC-501 ................................................................................5
Connecting an Antenna ...............................................................................6
Selecting an Antenna ...........................................................................6
Connecting the Antenna ....................................................................... 7
Connecting an Optional External Speaker .................................................. 7
Connecting Power .......................................................................................8
Using Vehicle Battery Power ................................................................8
Using the CB as a Base Station ...........................................................8
Operation ..........................................................................................................9
Receiving Transmissions and Adjusting Squelch .......................................9
Transmitting ..............................................................................................10
CB Operation Tips .....................................................................................10
Common Uses for a CB Radio ...........................................................10
CB Courtesy .......................................................................................11
Maximum Range ................................................................................11
Using Common 10-Codes ..................................................................12
Troubleshootin
Reducing Noise .........................................................................................14
Maintenance ...................................................................................................15
Replacing the Fuse ...................................................................................16
Specifications ................................................................................................17
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............................................................................................13
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INSTALLATION
MOUNTING THE
MICROPHONE HOLDER
Using a Phil lips s crewdr iver an d 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 microphone 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.
Caution:
microphone cable.
Never pull on the
MOUNTING THE
TRC-501
The mo st comm on mo unt ing loc at ion
for this CB is under a vehicle’s dashboard. However, if you use the TRC501 as a base station, you can place
it on a desk, shelf, or t able (see “Us ing 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 will not interfere with the vehicle’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.
To disconnect the microphone cable,
press and hold down the small tab on
the microphone plug, then pull out
the plug.
(il-
Caution:
vehicle, mount it securely to avoid
damage to the CB or vehicle during
sudden starts or stops.
If you use the TRC-501 in a
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Follow these steps to mount the CB
using the supplied hardware.
1. Using the mounting b racket as a
template, mark the posi tions for
the three screw holes.
(il-
2. In each marked location, drill a
hole slightly smaller than the
supplied large screws.
Caution: Be careful not to drill
into anything b ehind the mount ing surface.
3. Using a Phillips screwdriver,
attach the mounting bracket to
the mounting surface with the
large screws and supplied lock
washers.
(il-
4. Attach the CB to the mounting
bracket using the rubber washers and mounting knobs.
(il-
CONNECTING AN
ANTENNA
Caution: To prevent damage to your
CB, you must connect an antenna to
the CB before you operate it.
Selecting an Antenna
Although this CB is designed for mobile use, you can also use it as a
base station. When deciding on a
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 a nd antenna cab le
should be as far as possible
from sources of electrical noise
(ignition systems, gauges, etc.).
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