Radio Shack TRC-494 User Manual
21-158 9.fm Page 1 Thursday, August 5, 1999 10:10 AM
Citizen’s Band Weatheradio
Cat. No. 21-1589
OWNER’S MANUAL
Please read before using this equipment.
TRC-494
40-Channel Emergency
21-158 9.fm Page 1 Thursday, August 5, 1999 10:10 AM
Citizen’s Band Weatheradio
Cat. No. 21-1589
OWNER’S MANUAL
Please read before using this equipment.
TRC-494
40-Channel Emergency
g
y Sy
g
y
g
21-158 9.fm Page 2 Thursday, August 5, 1999 10:10 AM
INTRODUCTION
Your Radio Shack TRC-494 is a 40channel emergency citizen’s band
weatheradio that is specially designed for emergency situations. It
comes with a handy carrying case so
you can easily move it from one vehicle to another. And, the TRC-494 is
also a 3-channel weatheradio, which
you can use to receive weather information 24 hours a day.
You can power the TRC-494 from the
cigarette-lighter socket in any vehicle
that has a 12-volt, negative ground
electrical system. You can also power the CB from the supplied battery
pack.
Its features include:
—
CB/Weatheradio Switch
quickly switch from the CB to the
weatheradio function.
Emer
immediately switches the CB to
Channel 9, the universal emergency
channel.
PLL (Phase-Locked Loop) Frequenc
liable and exact tuning using a
frequency reference crystal.
Di
— makes it easy to see which channel is selected.
ency Channel 9 Switch
nthesizer
ital Channel-Number Displa
Radio Shack is a registered trademark used by Tandy Corporation.
— provides re-
lets you
—
© 1996 Tandy Corporation.
All Rights Reserved.
e Control
Ran
background noise when no strong
signals are present.
Built-In Ceramic Filters
superior selectivity and prevent adjacent-channel interference.
Built-In Automatic Noise Limiter
— reduces noise caused by
(ANL)
nearby electrical equipment, such as
motors or automotive ignition systems.
External Antenna J ack
connect the T RC-494 to an ext ernal
CB radio antenna.
: The TRC-494 comes with a
Note
telescoping antenna t hat you c an attach directly to the CB. You c an also
attach it to the supplied magnetmount base for use when your vehicle is not moving. If you plan to use
the CB when your veh icle is movin g,
we recommend that you purchase a
standard mount antenna.
REACT might not be available
Note:
in all areas.
— lets you e lim in ate
— provide
— lets you
Important:
nationwide 24-hour network that monitors
Channel 9. Switch to
Channel 9 in an emergency, and report the
problem.
REACT is a
2
g
y Sy
g
y
g
21-158 9.fm Page 2 Thursday, August 5, 1999 10:10 AM
INTRODUCTION
Your Radio Shack TRC-494 is a 40channel emergency citizen’s band
weatheradio that is specially designed for emergency situations. It
comes with a handy carrying case so
you can easily move it from one vehicle to another. And, the TRC-494 is
also a 3-channel weatheradio, which
you can use to receive weather information 24 hours a day.
You can power the TRC-494 from the
cigarette-lighter socket in any vehicle
that has a 12-volt, negative ground
electrical system. You can also power the CB from the supplied battery
pack.
Its features include:
—
CB/Weatheradio Switch
quickly switch from the CB to the
weatheradio function.
Emer
immediately switches the CB to
Channel 9, the universal emergency
channel.
PLL (Phase-Locked Loop) Frequenc
liable and exact tuning using a
frequency reference crystal.
Di
— makes it easy to see which channel is selected.
ency Channel 9 Switch
nthesizer
ital Channel-Number Displa
Radio Shack is a registered trademark used by Tandy Corporation.
— provides re-
lets you
—
© 1996 Tandy Corporation.
All Rights Reserved.
e Control
Ran
background noise when no strong
signals are present.
Built-In Ceramic Filters
superior selectivity and prevent adjacent-channel interference.
Built-In Automatic Noise Limiter
— reduces noise caused by
(ANL)
nearby electrical equipment, such as
motors or automotive ignition systems.
External Antenna J ack
connect the T RC-494 to an ext ernal
CB radio antenna.
: The TRC-494 comes with a
Note
telescoping antenna t hat you c an attach directly to the CB. You c an also
attach it to the supplied magnetmount base for use when your vehicle is not moving. If you plan to use
the CB when your veh icle is movin g,
we recommend that you purchase a
standard mount antenna.
REACT might not be available
Note:
in all areas.
— lets you e lim in ate
— provide
— lets you
Important:
nationwide 24-hour network that monitors
Channel 9. Switch to
Channel 9 in an emergency, and report the
problem.
REACT is a
2
21-158 9.fm Page 3 Thursday, August 5, 1999 10:10 AM
For your records, we urge you to
record your CB’s serial number in the
space below. The serial number is on
the CB’s back panel.
Serial Number:_________________
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.
Warning
make any internal adjustments. Internal adjustments can be made only by
authorized service personnel.
: Do not open your CB to
FCC
Your CB might cause TV or radio interference even when it is operating
properly. To determine if 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:
• Moving your CB away from the
receiver.
• Contacting your local Radio
Shack store for help.
If you cannot eliminate the interference, the FCC requires that you stop
using your CB.
Internal adjustments and/or modifications 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.
3
21-158 9.fm Page 3 Thursday, August 5, 1999 10:10 AM
For your records, we urge you to
record your CB’s serial number in the
space below. The serial number is on
the CB’s back panel.
Serial Number:_________________
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.
Warning
make any internal adjustments. Internal adjustments can be made only by
authorized service personnel.
: Do not open your CB to
FCC
Your CB might cause TV or radio interference even when it is operating
properly. To determine if 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:
• Moving your CB away from the
receiver.
• Contacting your local Radio
Shack store for help.
If you cannot eliminate the interference, the FCC requires that you stop
using your CB.
Internal adjustments and/or modifications 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.
3
21-158 9.fm Page 4 Thursday, August 5, 1999 10:10 AM
CONTENTS
PREPARATION ............................................................................................... 5
Supplying Power.............................................. ....... ..... ....... ....... ..... ....... ..... 5
Using Vehicle Battery Power ............................................................... 5
Installing the Battery Pack .................................................................. 5
Attaching the Antenna ................................................................................ 6
Attaching the Antenna Directly to the CB ................................ ....... ..... 6
Using the Antenna’s Magnetic Base .................... ....... ....... ....... .......... 7
USING THE CB ............................. ....................... ................. ........................ .. 8
Setting
USING THE WEATHERADIO ........................................................................ 10
CB OPERATION TIPS .................................................................................... 11
Common Uses for a CB Radio.................................................................. 11
CB Courtesy............................................................................................. 12
Maximum Range ...................................................................................... 12
Using Common 10-Codes ........................................................................ 13
RANGE
Business Uses ............... ........................ ........................ ................ .... 1 1
Personal Uses .................................................................................... 11
....... ....................... ................. ........................ ..................... 9
TROUBLESHOOTING .................................................................................. 14
Reducing Noise .............. ....... ....... ....... ..... ....... ....... ..... ....... ....... ....... ..... ... 15
MAINTENANCE ............................................................................................ 16
Replacing the Power Cord’s Fuse............................................................ 17
SPECIFICATIONS ......................................................................................... 18
4
21-158 9.fm Page 4 Thursday, August 5, 1999 10:10 AM
CONTENTS
PREPARATION ............................................................................................... 5
Supplying Power.............................................. ....... ..... ....... ....... ..... ....... ..... 5
Using Vehicle Battery Power ............................................................... 5
Installing the Battery Pack .................................................................. 5
Attaching the Antenna ................................................................................ 6
Attaching the Antenna Directly to the CB ................................ ....... ..... 6
Using the Antenna’s Magnetic Base .................... ....... ....... ....... .......... 7
USING THE CB ............................. ....................... ................. ........................ .. 8
Setting
USING THE WEATHERADIO ........................................................................ 10
CB OPERATION TIPS .................................................................................... 11
Common Uses for a CB Radio.................................................................. 11
CB Courtesy............................................................................................. 12
Maximum Range ...................................................................................... 12
Using Common 10-Codes ........................................................................ 13
RANGE
Business Uses ............... ........................ ........................ ................ .... 1 1
Personal Uses .................................................................................... 11
....... ....................... ................. ........................ ..................... 9
TROUBLESHOOTING .................................................................................. 14
Reducing Noise .............. ....... ....... ....... ..... ....... ....... ..... ....... ....... ....... ..... ... 15
MAINTENANCE ............................................................................................ 16
Replacing the Power Cord’s Fuse............................................................ 17
SPECIFICATIONS ......................................................................................... 18
4
21-158 9.fm Page 5 Thursday, August 5, 1999 10:10 AM
PREPARATION
SUPPLYING POWER
Using Vehicle Battery Power
Follow these steps to power the CB
from your vehicle’s battery.
1. Plug the small end of the supplied power cord into
the side of the CB.
Caution: Before plugging the
power cord’s cigarette-lighter
plug into your vehicle’s cigarette-lighter socket, make sure
the t i p i s scre w e d firm l y onto the
plug (see “Replacing the Power
Cord’s Fuse” on Page 17).
DC 12V
on
Installing the Battery Pack
Your CB uses eight AA batteries for
power. For the best performance and
longest life, we rec ommend alkaline
batteries, such as Radio Shac k Cat.
No. 23-552.
When you connect the DC
Note:
power cord to the CB, the battery
pack automatically disconnects.
Follow these steps to install the batteries in the battery pack and at tach
the battery pack to the CB.
1. Press down and slide the battery
pack’s latch in the direction of
the arrow. While holding the
latch, slide the battery pack off
to the right.
2. Plug the other end of the power
cord into the cigarette-lighter
socket.
Notes:
• If the CB does not operate properly when you are using the DC
power cord, check that the
lighter socket is clean and free
of ashes or other debris.
• If the unit still does not work,
check the fuse in the DC power
cord (see “Replacing the Power
Cord’s Fuse” on Page 17).
5
2. Push down on the center of the
battery pack’s top to remove the
battery holder from the battery
pack case.
21-158 9.fm Page 5 Thursday, August 5, 1999 10:10 AM
PREPARATION
SUPPLYING POWER
Using Vehicle Battery Power
Follow these steps to power the CB
from your vehicle’s battery.
1. Plug the small end of the supplied power cord into
the side of the CB.
Caution: Before plugging the
power cord’s cigarette-lighter
plug into your vehicle’s cigarette-lighter socket, make sure
the t i p i s scre w e d firm l y onto the
plug (see “Replacing the Power
Cord’s Fuse” on Page 17).
DC 12V
on
Installing the Battery Pack
Your CB uses eight AA batteries for
power. For the best performance and
longest life, we rec ommend alkaline
batteries, such as Radio Shac k Cat.
No. 23-552.
When you connect the DC
Note:
power cord to the CB, the battery
pack automatically disconnects.
Follow these steps to install the batteries in the battery pack and at tach
the battery pack to the CB.
1. Press down and slide the battery
pack’s latch in the direction of
the arrow. While holding the
latch, slide the battery pack off
to the right.
2. Plug the other end of the power
cord into the cigarette-lighter
socket.
Notes:
• If the CB does not operate properly when you are using the DC
power cord, check that the
lighter socket is clean and free
of ashes or other debris.
• If the unit still does not work,
check the fuse in the DC power
cord (see “Replacing the Power
Cord’s Fuse” on Page 17).
5
2. Push down on the center of the
battery pack’s top to remove the
battery holder from the battery
pack case.
21-158 9.fm Page 6 Thursday, August 5, 1999 10:10 AM
3. Install the batteries in the holder
as indicated by t he polarity symbols (+ and –) marked on the
holder.
4. Slide the battery pack’s case
over the holder until it snaps into
place.
Note: The case slides over the
holder in only one direction. If it
doesn’t slide into place on the
first try, do not force it! Turn the
case over and try again.
5. From the right side of the CB,
slide the battery pack onto the
bottom of the CB until it clicks
into place.
ATTACHING THE
ANTENNA
You can attach the supplied telescoping antenna to the supplied
magnetic base or directly to the CB .
In either case, fully extend the antenna for max imum range .
Attaching the Antenna
Directly to the CB
To attach the an tenna dire ctly to the
CB, simply screw the antenna into
the CB’s
ROD ANT
jack.
To test the batteries, press
TEST
on the battery pack. If the indicator lights, the batteries are still
good. If the indicator does not ligh t,
replace all eight batteries.
6
BATT
21-158 9.fm Page 6 Thursday, August 5, 1999 10:10 AM
3. Install the batteries in the holder
as indicated by t he polarity symbols (+ and –) marked on the
holder.
4. Slide the battery pack’s case
over the holder until it snaps into
place.
Note: The case slides over the
holder in only one direction. If it
doesn’t slide into place on the
first try, do not force it! Turn the
case over and try again.
5. From the right side of the CB,
slide the battery pack onto the
bottom of the CB until it clicks
into place.
ATTACHING THE
ANTENNA
You can attach the supplied telescoping antenna to the supplied
magnetic base or directly to the CB .
In either case, fully extend the antenna for max imum range .
Attaching the Antenna
Directly to the CB
To attach the an tenna dire ctly to the
CB, simply screw the antenna into
the CB’s
ROD ANT
jack.
To test the batteries, press
TEST
on the battery pack. If the indicator lights, the batteries are still
good. If the indicator does not ligh t,
replace all eight batteries.
6
BATT
Loading...