Radio Shack Two Way Radio TRC 237 User Guide

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OWNER’S MANUAL  
Cat. No. 21-1650  
TRC-237  
40-Channel 5-Watt  
CB Walkie Talkie  
with Channel 9/19 Priority Switch  
Please read before using this equipment.  
 
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2-Digit LED Display — lets you easily  
see the selected channel number.  
Automatic Noise Limiter (ANL) Circuit  
— reduces noise caused by nearby elec-  
trical equipment such as motors or auto-  
motive ignition systems.  
Battery Test Button and Battery Indica-  
tor — lets you check the batteries’ condi-  
tion to find out if they need replacing.  
Flexible Antenna with BNC Connector  
— provides excellent reception and trans-  
mission, and is designed to help prevent  
antenna breakage.  
Automatic Display Dimmer — the chan-  
nel display automatically brightens when  
you press most buttons. Then, after a few  
seconds, it dims to save battery power.  
Power/Charging Jack — lets you power  
your TRC-237 from an AC or DC power  
source, so you can use the TRC-237 with-  
out draining the batteries. And, lets you  
charge nickel-cadmium batteries without  
removing them from the TRC-237.  
Note: You need eight AA alkaline batter-  
ies or ten nickel-cadmium rechargeable  
batteries (not supplied) to power your  
TRC-237.  
We recommend you record the TRC-  
237’s serial number here. The serial  
number is located on the radio’s back  
panel:  
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FCC INFORMATION  
The Federal Communications Commis-  
sion (FCC) does not require you to have  
a license to operate this walkie talkie.  
However, the FCC does require that you  
read and 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 TRC-237.  
Internal adjustments and/or modifications  
can lead to illegal operation as defined by  
Part 95 of FCC Rules. Such illegal opera-  
tion can lead to very serious consequenc-  
es.  
To be safe and sure:  
Never open your TRC-237’s case.  
Never modify your TRC-237.  
Your TRC-237 might cause TV or radio  
interference even when it is operating  
properly. To determine whether your  
TRC-237 is causing the interference, turn  
off your TRC-237. If the interference goes  
away, your TRC-237 is causing it. Try to  
eliminate the interference by:  
Moving your TRC-237 away from the  
TV or radio  
Contacting your local RadioShack  
store for help  
Warning: Do not open your TRC-237 to  
make any internal adjustments. Any inter-  
nal adjustments should be made only by  
authorized service personnel.  
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CONTENTS  
Powering the CB ................................ 6  
Using the POWER Jack and  
ALKALINE/NI-CD Switch .................. 6  
Using Batteries ................................. 7  
Testing the Battery Power .......... 10  
Recharging Nickel-Cadmium  
Batteries ..................................... 10  
Using Vehicle Battery Power........... 12  
Using AC Power ............................. 13  
Connecting the Antenna .................. 15  
Connecting an  
Optional Antenna ........................ 16  
Operation .......................................... 18  
Receiving Transmissions and  
Adjusting Squelch .......................... 18  
Transmitting .................................... 20  
CB Operation Tips ........................... 21  
Common Uses for a CB Radio ....... 21  
Business Uses ........................... 21  
Personal Uses ........................... 21  
Using Common 10-Codes .............. 22  
CB Courtesy ................................... 24  
Maximum Range ............................ 24  
Troubleshooting ............................... 25  
Maintenance ..................................... 26  
Specifications .................................. 27  
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POWERING THE CB  
You can power your TRC-237 from any of  
these sources (none supplied):  
• Eight AA alkaline batteries with the  
two supplied dummy batteries  
• Ten rechargeable AA nickel-  
cadmium batteries  
• 12-volt vehicle battery power using a  
fused power cord  
• Standard AC power using a power  
supply  
USING THE POWER JACK  
AND ALKALINE/NI-CD  
SWITCH  
POWER  
The  
jack lets you connect an ex-  
ternal power source (such as your vehi-  
cle’s battery power or AC power), or  
connect a battery charger to charge  
nickel-cadmium batteries while they are in  
the TRC-237.  
AL-  
The TRC-237 also has a slide switch (  
KALINE/NI CD  
-
) inside the battery com-  
partment that you must set correctly,  
depending on what power source you are  
using and whether or not you want to  
charge rechargeable batteries while they  
are in the TRC-237.  
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• Set it to ALKALINE before you con-  
nect an external power source (vehi-  
cle battery power or AC adapter) to  
the POWER jack or while you are us-  
ing internal batteries (alkaline or re-  
chargeable).  
• Set it to NI-CD only when you con-  
nect a battery charger to the POWER  
jack to charge the installed recharge-  
able batteries.  
Warning: To avoid injuring yourself or  
damaging the TRC-237, connect a bat-  
tery charger to the POWER jack only  
when nickel-cadmium batteries are in-  
stalled (see “Recharging Nickel-Cadmium  
Batteries” on Page 10). Never try to re-  
charge non-rechargeable batteries. They  
could get very hot and explode.  
Note: You can connect an external pow-  
er source for power regardless of the type  
of batteries you installed.  
USING BATTERIES  
You can power the TRC-237 from eight  
AA alkaline batteries (such as Ra-  
dioShack Cat. No. 23-552) with the two  
supplied dummy batteries, or 10 re-  
chargeable AA nickel-cadmium batteries  
(such as Cat. No. 23-125).  
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Cautions:  
• Always use fresh, or freshly charged,  
batteries of the required size and  
recommended type.  
• Do not mix old and new batteries,  
different types of batteries (stan-  
dard, alkaline, or rechargeable  
nickel-cadmium), or rechargeable  
batteries of different capacities.  
Follow these steps to install the batteries.  
1. If the TRC-237 is on, turn OFF/VOLUME  
fully counterclockwise until it clicks to  
turn it off.  
2. Slide the strap on the back of the  
TRC-237 through the buckle and the  
battery compartment cover to re-  
move it.  
3. Slide the battery compartment cover  
in the direction of the arrows to  
remove it.  
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4. Be sure ALKALINE/NI-CD inside the  
battery compartment is set to ALKA-  
LINE.  
5. Put eight AA alkaline batteries and  
the two supplied dummy batteries, or  
ten AA nickel-cadmium batteries into  
the battery compartment, as indi-  
cated by the polarity symbols (+ and  
–) marked inside.  
Note: Before you use the TRC-237  
with nickel-cadmium batteries, you  
need to charge the batteries (see  
“Recharging Nickel-Cadmium Batter-  
ies” on Page 10).  
6. Replace the battery compartment  
cover and the strap on the back of  
the TRC-237.  
Cautions:  
• If you will not be powering the TRC-  
237 from internal batteries for sev-  
eral months, remove the batteries.  
• Dispose of old batteries promptly  
and properly.  
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Testing the Battery Power  
1. Turn on the TRC-237 by rotating  
OFF/VOLUME clockwise until it clicks.  
2. Hold down BATT TEST. If the indica-  
tor lights, there is enough battery  
power to operate the CB. If the indi-  
cator is dim or does not light, replace  
or recharge the batteries.  
Recharging Nickel-Cadmium  
Batteries  
You can use a battery charger, Cat. No.  
23-249 (not supplied), to charge or re-  
charge nickel-cadmium batteries while  
they are inside the TRC-237’s battery  
compartment.  
Do not use the TRC-237 while you are  
charging the nickel-cadmium batteries.  
Cautions:  
• Use only the recommended battery  
charger to recharge the batteries in  
the TRC-237. Other chargers could  
damage your TRC-237 or the batter-  
ies.  
• Be careful not to overcharge nickel-  
cadmium batteries.  
To prevent damage to rechargeable  
nickel-cadmium batteries, never  
charge them in an area where the  
temperature is above 90°F (32°C) or  
below 40°F (4.5°C).  
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Follow these steps to charge nickel-  
cadmium batteries in the TRC-237.  
1. If the TRC-237 is on, turn OFF/VOLUME  
fully counterclockwise until it clicks to  
turn it off.  
2. Set ALKALINE/NI-CD inside the bat-  
tery compartment to NI-CD (see “Us-  
ing the Power Jack and ALKALINE/  
NI-CD Switch” on Page 6).  
3. Connect the battery charger’s 5.5  
mm outer diameter./2.1 mm inner  
diameter barrel plug to the POWER  
jack on the side of the TRC-237,  
then plug the battery charger’s plug  
into a standard AC outlet.  
It takes about 24 hours to charge  
new or fully discharged nickel-  
cadmium batteries. Subsequent  
charges take about 16 to 18 hours.  
4. When charging is complete, unplug  
the battery charger’s plug from the  
AC outlet. Then disconnect the bat-  
tery charger’s barrel plug from the  
POWER jack.  
5. If the TRC-237 is on, turn OFF/VOLUME  
fully counterclockwise until it clicks to  
turn it off. Then set ALKALINE/NI-CD  
to ALKALINE.  
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Note: You can use an external charger  
(such as Cat. No. 23-134, not sup-  
plied) to recharge the nickel-cadmium  
batteries. After removing the batteries  
from the TRC-237, follow the instructions  
that come with the external charger.  
Important: Your TRC-237 is capable of  
using nickel-cadmium batteries. At the end  
of the batteries’ useful life, they must be re-  
cycled or disposed of properly. Contact  
your local, county, or state hazardous  
waste management authorities for informa-  
tion on recycling or disposal programs in  
your area. Some options that might be  
available are: municipal curbside collec-  
tion, drop-off boxes at retailers such as  
your local RadioShack store, recycling col-  
lection centers, and mail-back programs.  
USING VEHICLE BATTERY  
POWER  
You can power your TRC-237 from your  
vehicle’s cigarette-lighter socket with an  
optional 12-volt DC fused power cord  
(such as Cat. No. 270-1533).  
Cautions:  
• You must use a DC fused cord that  
supplies 12 volts and delivers at  
least 1200 milliamps of vehicle  
power. Its center tip must be set to  
positive, and its plug must correctly  
fit the TRC-237’s POWER jack. The  
recommended fused cord meets  
these specifications. Using a fused  
cord that does not meet these speci-  
fications could damage the TRC-237  
or the fused cord.  
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• When you finish using the TRC-237,  
unplug the fused cord from the ciga-  
rette-lighter socket before you dis-  
connect it from your TRC-237.  
1. If the TRC-237 is on, turn OFF/VOL-  
UME fully counterclockwise until it  
clicks to turn it off.  
2. Be sure ALKALINE/NI-CD inside the  
battery compartment is set to ALKA-  
LINE.  
3. Insert the power cord’s 5.5 mm outer  
diameter/2.1 mm inner diameter bar-  
rel plug into the POWER jack.  
4. Plug the power cord’s other end into  
your vehicle’s cigarette-lighter socket.  
Note: If the TRC-237 does not operate  
when you use the DC power cord, unplug  
the cord from the cigarette-lighter socket  
and clean any ashes or debris from the  
socket. If your TRC-237 still does not  
work, check the fuse in the DC power cord  
and replace it if necessary.  
USING AC POWER  
You can power your TRC-237 from stan-  
dard AC power using an optional AC-to-  
12 V DC power supply (such as Cat. No.  
22-504) and an optional DC fused power  
cord (such as Cat. No. 270-1533).  
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Cautions:  
• The power supply must be able to  
deliver 12 volts and at least 1200 mil-  
liamps of power. The recommended  
power supply meets these specifica-  
tions. Using a power supply that  
does not meet these specifications  
could damage the TRC-237 or the  
power supply.  
You must use a DC fused cord that  
supplies 12 volts and delivers at  
least 1200 milliamps of power. Its  
center tip must be set to positive,  
and its barrel plug must correctly fit  
the TRC-237’s POWER jack. The rec-  
ommended fused cord meets these  
specifications. Using a fused cord  
that does not meet these specifica-  
tions could damage the TRC-237 or  
the fused cord.  
To help prevent an electrical short,  
unplug the DC fused cord’s plug from  
the AC adapter’s power socket be-  
fore you unplug the cord’s barrel plug  
from the TRC-237.  
Follow these steps to connect the TRC-  
237 to AC power.  
1. If the TRC-237 is on, turn OFF/VOL-  
UME fully counterclockwise until it  
clicks to turn it off.  
2. Connect the DC fused cord’s 5.5 mm  
outer diameter/2.1 mm inner diame-  
ter barrel plug to the TRC-237’s  
POWER jack.  
3. Be sure ALKALINE/NI-CD inside the  
battery compartment is set to ALKA-  
LINE.  
4. Plug the DC fused cord’s other end  
into the power supply’s power socket.  
5. Plug the power supply into a stan-  
dard AC outlet, then turn on the pow-  
er supply.  
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Note: If the TRC-237 does not operate  
when you use the DC fused cord, turn the  
power supply off, unplug the cord from the  
power supply’s power socket, then clean  
any debris from the socket. If your TRC-  
237 still does not work, check the fuse in  
the DC fused cord and replace it if neces-  
sary.  
CONNECTING THE  
ANTENNA  
Caution: To prevent damage to your  
TRC-237, you must connect an antenna  
before you operate it.  
Follow these steps to attach the supplied  
flexible antenna to your TRC-237.  
1. Align the slots around the antenna’s  
connector with the tabs on the  
antenna jack on top of the TRC-237.  
2. Press the antenna down over the  
jack and turn the antenna’s base  
clockwise until it locks into place.  
To remove the antenna, turn the anten-  
na’s base counterclockwise until it un-  
locks, then lift it off the antenna jack.  
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Connecting an Optional  
Antenna  
Your walkie talkie comes with a flexible  
antenna that is ideal for most applications.  
However, the walkie talkie’s antenna jack  
makes it easy to connect other types of  
antennas, too. For mobile or base station  
use, you might want to connect an option-  
al external antenna. Your local Ra-  
dioShack store carries a wide selection of  
external mobile or outdoor base-  
station antennas. Choose the one that  
best meets your needs.  
When deciding on a mobile or base-  
station antenna and its location, consider  
the following:  
• The location of the antenna should  
be as high as possible.  
• The antenna and antenna cable  
should be as far as possible from  
sources of electrical noise (appli-  
ances, other radios, and so on).  
• The antenna should be vertical for  
the best performance.  
Note: When connecting an optional an-  
tenna, always use 50-ohm coaxial cable,  
such as RG-58 or RG-8. For lengths over  
50 feet, use RG-8 low-loss dielectric coax-  
ial cable. If the coaxial cable’s connector  
does not fit into the antenna jack, you  
might also need a PL-259-to-BNC anten-  
na plug adapter, such as Cat. No. 278-  
120. Your local RadioShack store carries  
a wide variety of coaxial antenna cable  
and connectors.  
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Follow the installation instructions sup-  
plied with the antenna, route the antenna  
cable to the TRC-237, then connect it to  
the antenna jack.  
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 vehi-  
cle’s engine compartment or other  
areas that produce extreme heat.  
• Follow all cautions and warnings  
included with the antenna.  
Warning: When installing or removing a  
base station CB antenna, use extreme  
caution. If the antenna starts to fall, let it  
go! It could contact overhead 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 remove  
the antenna. DO NOT attempt to do so  
yourself.  
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OPERATION  
Before you use your TRC-237, we recom-  
mend you read “CB Operation Tips” on  
Page 21, which contains information to  
help you use it effectively and courteously.  
RECEIVING  
TRANSMISSIONS AND  
ADJUSTING SQUELCH  
1. If you did not connect an external  
antenna, hold the TRC-237 so the  
antenna is vertical.  
OFF/  
2. Turn on the TRC-237 by turning  
VOLUME  
clockwise until you hear a  
click and a hissing sound.  
OUT CH9 CH19  
on top of the  
3. Set  
TRC-237 for the channel you want to  
tune:  
To quickly tune to Channel 9, set it  
CH9.  
to  
9 flashes on the display.  
To quickly tune to Channel 19, set  
CH19.  
it to  
19 flashes on the dis-  
play.  
To tune to any channel other than  
Channel 9 or Channel 19, set it to  
OUT.  
The previously selected  
channel number appears on the  
display.  
Note:  
When you tune a channel, the  
channel’s number appears or flashes  
on the display for about 20 seconds  
then fades, to save battery power. To  
continuously display the channel  
DISPLAY  
number, press and hold  
the side of the TRC-237.  
on  
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To redisplay the channel number for  
about 20 seconds, simply press and  
release DISPLAY.  
4. If you set OUT CH9 CH19 to OUT,  
repeatedly press CH s to select  
higher channels, or CH t to select  
lower channels. To move rapidly  
through the channels, hold down CH  
s or t.  
5. Adjust OFF/VOLUME to a comfortable  
listening level.  
6. Adjust SQUELCH to cut out the back-  
ground noise. Wait until there is no  
signal on the channel, then slowly  
turn SQUELCH clockwise until the  
background noise stops.  
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Note: Do not turn SQUELCH too far  
clockwise because you might also  
cut out weak signals.  
7. To turn off the TRC-237, turn OFF/  
VOLUME toward OFF until it clicks.  
TRANSMITTING  
1. Follow Steps 1–6 in “Receiving  
Transmissions  
and  
Adjusting  
Squelch” on Page 18.  
2. Hold the TRC-237 2 to 3 inches from  
your mouth. Press and hold PUSH TO  
TALK on the side of the TRC-237. TX  
on the front of the TRC-237 lights.  
Speak into the microphone. MOD  
lights.  
When you finish speaking, release  
the button. TX and MOD turn off.  
Note: Do not speak too loudly when  
transmitting. It does not make your  
signal any stronger, and might distort  
your transmission.  
Important: Channel 9 is reserved for  
motorist assistance and for reporting  
emergency information about acci-  
dents, hazardous road conditions,  
and so on. If you are using Channel  
9, always give emergency messages  
priority.  
3. To turn off the TRC-237, turn OFF/  
VOLUME toward OFF until it clicks.  
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CB OPERATION TIPS  
The following tips will help you get the  
most enjoyment from your TRC-237.  
COMMON USES FOR A CB  
RADIO  
Business Uses  
Truck drivers and delivery personnel  
can learn road and traffic conditions  
and get assistance in locating desti-  
nations. A walkie talkie is also good  
company on those “long hauls.”  
On construction crews, a walkie  
talkie quickly pays for itself when you  
are calling for additional materials or  
coordinating the activities of differ-  
ent work crews.  
For security officers, a walkie talkie is  
more than a convenience — it is a  
must for both safety and efficiency.  
Personal Uses  
Keep in touch with home while driv-  
ing 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,  
walkie talkies are great for communi-  
cating with family members while  
they are in their cars.  
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 assur-  
ance it is to be able to radio for assis-  
tance.  
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Camping, fishing, and other sports  
are more fun with a walkie talkie.  
Locate a friend or find out “what’s  
cooking” back at camp.  
USING COMMON  
10-CODES  
Citizen’s band operators have largely  
adopted the 10-codes for standard ques-  
tions and answers. Their use permits fast-  
er communication and better intelligibility  
in noisy areas.  
This table lists the codes adopted by the  
Associated Public Safety Communica-  
tions Officers (APCO).  
Code  
Meaning  
10-1  
Cannot understand your mes-  
sage.  
10-2  
10-3  
10-4  
Your signal is good.  
Stop transmitting.  
Message received and under-  
stood.  
10-5  
10-6  
Relay information to _________.  
I am busy.  
10-7  
Out of service.  
10-8  
In service.  
10-9  
Repeat last message.  
Negative (No).  
10-10  
10-11  
10-12  
10-13  
10-14  
_____________ in service.  
Stand by.  
Report ___________ conditions.  
Information.  
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Code  
Meaning  
10-15  
10-16  
10-17  
10-18  
10-19  
10-20  
10-21  
10-22  
10-23  
10-24  
10-26  
10-30  
10-31  
10-33  
Message delivered.  
Reply to message.  
En route.  
Urgent.  
Contact __________.  
My location is __________.  
Call ________ by telephone.  
Cancel last message.  
Arrived at the scene.  
Assignment complete.  
Estimated time of arrival is ____.  
Use caution.  
Pick up.  
Emergency traffic. Clear the  
channel.  
10-34  
The time is _____.  
Note: Although this table lists the 10-  
codes’ meanings in the form of a state-  
ment, they can also be phrased as ques-  
tions (10-6: Are you busy?, 10-20: What is  
your location?).  
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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 several minutes before  
trying again.  
Do not press and hold PUSH TO  
TALK when you are not talking. (This  
is called dead keying.)  
Assist callers with directions, infor-  
mation about road conditions, and  
any other reasonable requests.  
MAXIMUM RANGE  
The maximum range and quality of CB  
transmissions vary depending on these  
conditions:  
Amount of power in the batteries  
The surrounding terrain — moun-  
tains and tall buildings limit the range  
Weather conditions  
The number of nearby CBs operating  
on the same channel  
To ensure maximum range, always keep  
fresh alkaline batteries or fully charged  
nickel-cadmium batteries in your TRC-  
237 when using battery power.  
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TROUBLESHOOTING  
If your TRC-237 is not working as it  
should, follow these suggestions to see if  
you can eliminate the problem. If you can-  
not, take it to your local RadioShack store  
for assistance.  
Symptom  
Suggestion  
Weak, bad,  
or no recep-  
tion.  
Be sure the TRC-237  
is turned on.  
Be sure the volume is  
turned up.  
Be sure the supplied  
flexible antenna or an  
external antenna is  
attached to the TRC-  
237’s antenna jack.  
Be sure the batteries  
are not weak (see  
Testing the Battery  
Power” on Page 10).  
Be sure you are not  
PUSH TO  
pressing  
TALK  
.
Trouble with  
transmis-  
sion  
Be sure the supplied  
flexible antenna or an  
external antenna is  
attached to the TRC-  
237’s antenna jack.  
Be sure you are fully  
PUSH TO  
pressing  
TALK  
.
Be sure the batteries  
are not weak (see  
Testing the Battery  
Power” on Page 10).  
OUT – CH9–  
Channel  
select but-  
tons do not  
work.  
Make sure  
CH19  
OUT  
is set to  
.
25  
 
21-1650.fm Page 26 Thursday, August 5, 1999 11:43 AM  
MAINTENANCE  
Your RadioShack TRC-237 40-Channel  
5-Watt CB Walkie Talkie with Channel 9/  
19 Priority Switch is an example of supe-  
rior design and craftsmanship. The follow-  
ing suggestions will help you care for your  
TRC-237 so you can enjoy it for years.  
Keep the TRC-237 dry. If it  
gets wet, wipe it dry immedi-  
ately. Liquids might contain  
minerals that can corrode  
the electronic circuits.  
Handle the TRC-237 gently  
and carefully. Dropping it  
can damage circuit boards  
and cases and can cause  
the TRC-237 to work im-  
properly.  
Use and store the TRC-237  
only in normal temperature  
environments. Temperature  
extremes can shorten the  
life of electronic devices,  
damage batteries, and dis-  
tort or melt plastic parts.  
Keep the TRC-237 away  
from dust and dirt, which  
can cause premature wear  
of parts.  
Wipe the TRC-237 with a  
damp cloth occasionally to  
keep it looking new. Do not  
use harsh chemicals, clean-  
ing solvents, or strong deter-  
gents to clean the TRC-237.  
Modifying or tampering with the TRC-237’s  
internal components can cause a malfunc-  
tion and might invalidate your TRC-237’s  
warranty and void your FCC authorization  
to operate it. If your TRC-237 is not per-  
forming as it should, take it to your local  
RadioShack store for assistance.  
26  
 
21-1650.fm Page 27 Thursday, August 5, 1999 11:43 AM  
SPECIFICATIONS  
Receiver  
Frequency Coverage ... 26.965 27.405 MHz  
Sensitivity (Max.) ..... 0.5 V at 10 dB (S+N)/N  
µ
Adjacent Channel Rejection ................. 45 dB  
Squelch ............Adjustable from 1 V to 1 mV  
µ
Audio Output (10% THD) ................. 400 mW  
Current Drain ............................... 85 450 mA  
Transmitter  
Frequency Coverage ... 26.965 27.405 MHz  
Power Input (at 12V DC):  
High ................................................. 5 W  
Low .................................................. 2 W  
Power Output:  
High .............................................. 2.5 W  
Low .................................................. 1 W  
Spurious Emission ................ –67 dB or better  
Type of Modulation ..................................... A3  
Frequency Tolerance .......................... 0.002%  
Antenna Impedance ................................ 50  
Antenna Length ..................................... 10 In.  
(25.4 cm)  
Current Drain:  
High ........................................... 650 mA  
Low ............................................. 450 mA  
Dimensions (HWD) ............ 71/2 23/4 21/8 In.  
×
×
×
×
(190 70 54 mm)  
Weight ................................................ 11.8 oz  
(334 g)  
Specifications are typical; individual units  
might vary. Specifications are subject to  
change and improvement without notice.  
27  
 
21-1650.fm Page 28 Thursday, August 5, 1999 11:43 AM  
Limited Ninety-Day Warranty  
This product is warranted by RadioShack against manu-  
facturing defects in material and workmanship under nor-  
mal use for ninety (90) days from the date of purchase  
from RadioShack company-owned stores and authorized  
RadioShack franchisees and dealers. EXCEPT AS PRO-  
VIDED HEREIN, RadioShack MAKES NO EXPRESS  
WARRANTIES AND ANY IMPLIED WARRANTIES, IN-  
CLUDING THOSE OF MERCHANTABILITY AND FIT-  
NESS FOR A PARTICULAR PURPOSE, ARE LIMITED  
IN DURATION TO THE DURATION OF THE WRITTEN  
LIMITED WARRANTIES CONTAINED HEREIN. EX-  
CEPT AS PROVIDED HEREIN, RadioShack SHALL  
HAVE NO LIABILITY OR RESPONSIBILITY TO CUS-  
TOMER OR ANY OTHER PERSON OR ENTITY WITH  
RESPECT TO ANY LIABILITY, LOSS OR DAMAGE  
CAUSED DIRECTLY OR INDIRECTLY BY USE OR  
PERFORMANCE OF THE PRODUCT OR ARISING  
OUT OF ANY BREACH OF THIS WARRANTY, INCLUD-  
ING, BUT NOT LIMITED TO, ANY DAMAGES RESULT-  
ING FROM INCONVENIENCE, LOSS OF TIME, DATA,  
PROPERTY, REVENUE, OR PROFIT OR ANY INDI-  
RECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL  
DAMAGES, EVEN IF RadioShack HAS BEEN ADVISED  
OF THE POSSIBILITY OF SUCH DAMAGES.  
Some states do not allow the limitations on how long an  
implied warranty lasts or the exclusion of incidental or  
consequential damages, so the above limitations or ex-  
clusions may not apply to you.  
In the event of a product defect during the warranty pe-  
riod, take the product and the RadioShack sales receipt  
as proof of purchase date to any RadioShack store. Ra-  
dioShack will, at its option, unless otherwise provided by  
law: (a) correct the defect by product repair without  
charge for parts and labor; (b) replace the product with  
one of the same or similar design; or (c) refund the pur-  
chase price. All replaced parts and products, and prod-  
ucts on which a refund is made, become the property of  
RadioShack. New or reconditioned parts and products  
may be used in the performance of warranty service. Re-  
paired or replaced parts and products are warranted for  
the remainder of the original warranty period. You will be  
charged for repair or replacement of the product made af-  
ter the expiration of the warranty period.  
This warranty does not cover: (a) damage or failure  
caused by or attributable to acts of God, abuse, accident,  
misuse, improper or abnormal usage, failure to follow in-  
structions, improper installation or maintenance, alter-  
ation, lightning or other incidence of excess voltage or  
current; (b) any repairs other than those provided by a  
RadioShack Authorized Service Facility; (c) consumables  
such as fuses or batteries; (d) cosmetic damage; (e)  
transportation, shipping or insurance costs; or (f) costs of  
product removal, installation, set-up service adjustment  
or reinstallation.  
This warranty gives you specific legal rights, and you may  
also have other rights which vary from state to state.  
RadioShack Customer Relations, Dept. W, 100 Throck-  
morton St., Suite 600, Fort Worth, TX 76102  
We Service What We Sell  
3/97  
RadioShack  
A Division of Tandy Corporation  
Fort Worth, Texas 76102  
811080960B  
4A8  
Printed in China  
 

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