21-161 5.fm Page 1 Thursday, August 5, 1999 11:07 AM
OWNER’S MANUAL Cat. No. 21-1615
TRC-93
300 mW 3-Channel
Walkie-Talkie
Please read bef ore using this equipment.
21-161 5.fm Page 2 Thursday, August 5, 1999 11:07 AM
FEATURES
Your RadioShack TRC-93 300 mW 3Channel Walkie-Talkie is a portable, twoway radio you can car ry almost anywher e.
You can use your TRC-93 around the
house, in your office, or in your car or
boat. You can also use it on fishing and
camping trips, or at your business for supervisory, security, or warehouse personnel.
Your TRC-93 has the following features:
Factory-Inst alled Crystals
— let you immediately begin using your TRC-93 on
Channel 14.
Three-Channel Opera tion
— comes wit h
Channel 14 crystals instal led, but lets you
install optional crystals so you can operate the TRC-93 on any tw o of the other 3 9
available CB channels. (See “Adding
Crystals” on Page 15).
Built-In Modulation Limiter Circuit
—
automatically adjusts to a variety of voice
levels to ensure a clear transmission.
Telescoping Ante nna
— provides excel-
lent reception and transmission.
Battery Indicator
— shows you the bat-
teries’ condition.
Removable Belt Clip
— lets you attach
the TRC-93 to your belt for hands-free
carrying wherever you go.
Note:
You need six AA alkaline batteries
(not supplied) t o power your TRC-93.
©
1997 Tandy Corporation.
All Rights Reserved.
RadioShack is a trademark
used by Tandy Corporation.
2
21-161 5.fm Page 3 Thursday, August 5, 1999 11:07 AM
We recommend you record the
TRC-93’s serial number here. The serial number is located on the radio’s
back panel._________________
FCC INFORMATION
The Federal Communications Commission (FCC) does not requir e you to ha ve a
license to operate this walkie-talkie. However, the FCC does require that you read
and know Part 95 of
rules apply to the operation of a Class D
CB. We have provided a copy of these
regulations with your TRC-93.
Internal adjustments and/or modifications
can lead to illegal operation as defined by
Part 95 of
can lead to very serious consequences.
To be safe and sure:
• Never open your TRC-93’s case
• Never modify your TRC-93.
FCC Rules
except to install or change crystals.
FCC Rules
. Such illegal operation
. These
Your TRC-93 might cause TV or radio interference e ven when it is operating prop erly. To determine whether your TRC-93
is causing the interference, turn off your
TRC-93. If the interference goes away,
your TRC-93 is causing it. Try to eliminate the interference by:
• Moving your TRC-93 away from the
TV or radio
• Contacting your local RadioShack
store for help
Warning
make any internal adjustments other than
installing or changing crystals. Any internal adjustments should be made only by
authorized service personnel.
: Do not open your TRC-93 to
3
21-161 5.fm Page 4 Thursday, August 5, 1999 11:07 AM
CONTENTS
Preparation ......................................... 5
Installing Batteries ......................... 5
Testing the Battery Power ...... 6
Using the Belt Clip...........................7
Operation ............................................ 8
Receiving Transmissions .............. 8
Transmitting .................................. 9
CB Operation Tips ............................ 11
Common Uses for a CB Radio .... 11
Business Uses ..................... 11
Personal Uses ..................... 11
Using Common 10-Codes ........... 12
CB Courtesy ................................ 14
Maximum Range .............. .. ......... 14
Adding Crystals ................................ 15
Troubleshooting ............................... 19
Maintenance ...................................... 20
Speci fi ca t io n s ...... .. ...................... ... .. 21
4
21-161 5.fm Page 5 Thursday, August 5, 1999 11:07 AM
PREPARATION
INSTALLING BATTERIES
Your TRC-93 requires s ix AA al kalin e batteries (such as RadioShack Cat. No. 23-
552) for power.
Cautions
• Always use fresh batteries of the
• Do not mix old and new batteries.
• Do not use rechargeable batteries in
Follow these steps to install batteries.
1. Remove the battery compartment
2. To help remove the bat tery case, pull
3. Insert six AA alkaline batteries into
:
required size and type.
the TRC-93.
cover by pressing down on the
cover’s arrow, then sliding the cover
down.
the ribbon inside the battery compartment. Then lift out the case.
the case, as indicated by the polarity
symbols (+ and –) marked inside the
battery case.
4. To replace the battery case, place it
on top of the ribbon.
5
21-161 5.fm Page 6 Thursday, August 5, 1999 11:07 AM
Notes:
• Be sure the case’s metal plates
touch the two metal plates inside
the battery compar tment.
Metal Plates
• The case fits inside the battery
compartment only one way. Do
not force it.
5. Replace the battery compartment
cover.
Note: If you will not be using the TRC-93
for several months, remove the batteries.
Testing the Battery Power
1. Make sure the TRC-93 is turned on
by turning
VOL
2. Press
6
OFF/VOL
until it click s.
BATT TEST
down toward
.
21-161 5.fm Page 7 Thursday, August 5, 1999 11:07 AM
If the indicator lights, the batteries
are good. If the indicator is dim or
does not light, the bat teries are weak
or dead and need to be replaced.
Caution: Dispose of old bat teri es prompt ly and properly.
USING THE BELT CLIP
To attach the supplied belt clip to the
TRC-93, press the c li p’s tabs into the corresponding holes on the back of the TRC-
93. Then push the cl ip upward unt il it loc ks
into place.
To remove the belt clip from the TRC-93,
use a flathead screwdriver to press the
tab under the clip and slide the clip down
to pull it out.
Tab
7
21-161 5.fm Page 8 Thursday, August 5, 1999 11:07 AM
OPERATION
Before you use your TRC-93, we recommend you read “CB Operation Tips” on
Page 11, which contains information to
help you use it effectively and courteously.
RECEIVING
TRANSMISSIONS
1. Fully extend the TRC-93’s telescoping antenna and hold the TRC-93 so
the antenna is vertical.
CHANNEL
2. Set
Note
: Your TRC-93 comes with
Channel 14 crystals installed in
channel position A. To use other
channels, you must first install crystals in channel positions B and C
inside the TRC-93 (see “Adding
Crystals” on Page 15).
8
to A, B, or C.
21-161 5.fm Page 9 Thursday, August 5, 1999 11:07 AM
3. Turn on the TRC93 by turning
OFF/VOL
toward
down
VOL
until
you hear a click
and a hissing
sound.
Note:
You might not hear a hissing
sound if
CHANNEL
is set to B or
and you haven’t installed any crystals in channel positions B or C.
4. To turn off the TRC-93, turn
up toward
OFF
until it clic k s .
OFF/VOL
C
T RANSMITTING
1. Follow Steps 1–3 in “Receiving
Transmissions” on Page 8.
2. Hold the TRC-93
2 to 3 inches
from your mouth.
Hold down
TO TALK
side of the TRC93 and speak in a
normal voice into
the microphone.
PUSH
on the
Microphone
9
21-1615.fm Page 10 Thursday, August 5, 1999 11:07 AM
When you finish speaking, release
the button.
Note: Do not speak too loudly when
transmitting. It does not make your
signal any stronger, and might distort
your transmis sion.
Important: Channel 9 is reserved for
motorist assistance and for reporting
emergency information about accidents, hazardous road conditions,
and so on. If you have installed the
necessary crystals in your TRC-93
and you are using Channel 9, always
give emergency messages priority.
3. To turn off the TRC-93, tur n
up toward
until it click s.
OFF
OFF/VOL
10
21-1615.fm Page 11 Thursday, August 5, 1999 11:07 AM
CB OPERATI ON TIPS
The following tips will help you get the
most enjoyment from your TRC-93.
COMMON USES FOR A CB
RADIO
Business Uses
• Truck drivers and delivery personnel
can learn road and traffic conditions
and get assistance in locating destinations. A walkie-talkie is also good
company on those “long hauls.”
• On construction crews, a walkietalkie q uickly pays for itself when you
are calling for additional materials or
coordinating the activities of different 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 driving 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 y o u ar e a t w o-c ar (or m ore ) f am ily,
walkie-talkies are great for communicating with family members while
they are in their cars.
• Contact friends or neighbors — find
out “what’s happening” or plan a gettogether.
• Ever have car trouble or run out of
gas on the highway? What an assurance it i s to be able to radio for assistance.
11
21-1615.fm Page 12 Thursday, August 5, 1999 11:07 AM
• 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 questions and answe rs. Thei r use pe rmi ts fas ter communication and better intelligibility
in noisy areas.
This table lists the codes adopted by the
Associated Public Safety Communications Officers (APCO).
Code Meaning
10-1 Cannot understand your mes-
sage.
10-2 Your si gnal is good.
10-3 Stop transmitting.
10-4 Message received and under-
10-5 Relay information to _________.
10-6 I am busy.
10-7 Out of serv ice.
10-8 In service.
10-9 Repeat last mes sage.
10-10 Negative (No).
10-11 _____________ in service.
10-12 Stand by.
10-13 Report ___________ conditions.
10-14 Information.
stood.
12
g
21-1615.fm Page 13 Thursday, August 5, 1999 11:07 AM
Code Meanin
10-15 Message delivered.
10-16 Reply to message.
10-17 En route.
10-18 Urgent.
10-19 Contact __________ .
10-20 My location is __________.
10-21 Call ________ by telephone.
10-22 Cance l last message.
10-23 Arrived at the scene.
10-24 Assignment complete.
10-26 Estimated time of arrival is ____.
10-30 Use ca ution.
10-31 Pic k up.
10-33 Emergency traffic. Clear the
channel.
10-34 The time i s _____.
Note: Although this table lists the 10codes’ meanings in the form of a statement, they can also be phrased as questions (10-6 : Are you busy?, 10-20: What is
your location?).
13
21-1615.fm Page 14 Thursday, August 5, 1999 11:07 AM
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 afte r a second attempt, sign
off and wait several minutes before
trying again.
• Do not hold down
when you are not talking. (This is
called
dead keying
• Assist callers with directions, information about road conditions, and
any other reasonable requests.
PUSH TO TALK
.)
MAXIMUM RANGE
The maximum range and quality of CB
transmissions vary depending on these
conditions:
• Amount of power in the batteries
• The surrounding terrain—mountains
and tall buildi ngs limit the range
• Weather con dit ions
• The number of nearby CBs operating
on the same channel
To ensure maximum range, always keep
fresh alkaline batteries in your TRC-93.
14
21-1615.fm Page 15 Thursday, August 5, 1999 11:07 AM
ADDING CRYSTALS
Your TRC-93 includ es two cry stals (trans mit and receive) i nstalled in channel position A. The crystals let you use the CB on
channel 14. You can add two more crystals in channel positions B and C so you
can use any two other channels of the 40
allotted to CBs. However, you must use
only crystals specifically designed for the
TRC-93, available from your local RadioShack store. Be sure to specify the
channel you want and the TRC-93’s catalog number (Cat. No. 21-1615).
Note:
Channel A crystals are sol dered in,
and can be replaced only by a qualified
technician.
The following chart shows the frequency
pairs (in
ting on each CB channel.
MHz) for receiving and transmit-
Note
: Receive crystals use a frequency
455 kHz lower than transmit crystals.
Channel Transmit Receive
1 26.965 26.510
2 26.975 26.520
3 26.985 26.530
4 27.005 26.550
5 27.015 26.560
6 27.025 26.570
7 27.035 26.580
8 27.055 26.600
9 27.065 26.610
10 27.075 26.620
11 27.085 26.630
12 27.105 26.650
13 27.115 26.660
14 27.125 26.670
15 27.135 26.680
15
21-1615.fm Page 16 Thursday, August 5, 1999 11:07 AM
Channel Transmit Receive
16 27.155 26 .700
17 27.165 26 .710
18 27.175 26 .720
19 27.185 26 .730
20 27.205 26 .750
21 27.215 26 .760
22 27.225 26 .770
23 27.255 26 .800
24 27.235 26 .780
25 27.245 26 .790
26 27.265 26 .810
27 27.275 26 .820
28 27.285 26 .830
29 27.295 26 .840
30 27.305 26 .850
31 27.315 26 .860
32 27.325 26 .870
33 27.335 26 .880
34 27.345 26 .890
35 27.355 26 .900
36 27.365 26 .910
37 27.375 26 .920
38 27.385 26 .930
39 27.395 26 .940
40 27.405 26 .950
Note: A crystal is marked with its frequency.
Follow these steps to change or install
crystals in your TRC-93.
1. Remove the battery compartment
cover by pressing down on the
cover’s arrow, then sliding the cover
down.
16
21-1615.fm Page 17 Thursday, August 5, 1999 11:07 AM
2. Remove the battery case.
3. Use a Phillips screwdriver to remove
the back cover’s tw o screws.
4. Firmly grasp the TRC-93’s front and
back cover’s sides and
carefully
pull
the back cover away from the front
cover.
5. Insert a new matched pair of crystals
(send and receive) into the sockets
for Channel B or C.
The sockets for the crystals are
marked next to Channel A on the circuit board with X1 (receive) and X2
(transmit). The channel’s letter (A, B,
or C) is marked on the circuit board
above the pair of sockets used with
that channel. There is also a diagram
of the sockets on the inside back
cover.
Important: Be sure you install the
receive (R) and transmit (T) crystals
in their correct sockets. Do not
reverse the transmit and receive
crystals. If you do, the TRC-93 will
transmit and receive on frequencies
outside the citizen’s band, resulting
in illegal operat ion.
17
21-1615.fm Page 18 Thursday, August 5, 1999 11:07 AM
(some circuitry
details left out
for cl arity)
6. When you have finished installing
new crystals, carefully fit the TRC93’s front and back cover’s sides
together, then gently squeeze them
together. Replace the back cover’s
two screws, replace the battery ca se,
then replace the battery compartment cover.
18
21-1615.fm Page 19 Thursday, August 5, 1999 11:07 AM
TROUBLESHOOTING
If your TRC-93 is not workin g as it should,
follow these suggestions to see if you can
eliminate the problem. If you cannot, take
it to yo ur local Radi oSha ck sto re fo r a ssistance.
Symptom Suggestion
Weak, bad,
or no reception.
Troubl e with
transmission
Be sure the TRC-93 is
turned on.
Be sure the volu m e is
turned up.
Be sure th e a ntenna is
fully extended.
Be sure the batteries
are not weak (see
“Testing the Battery
Power” on Page 6).
Be sure you are not
pressing
TALK
Be sure
set to
PUSH TO
.
CHANNEL
A
if you hav e not
is
installed any more
crysta l s in the TR C-9 3.
Be sure th e a ntenna is
fully extended.
Be sure you are fully
pressing
TALK
PUSH TO
.
Be sure the batteries
are not weak (see
“Testing the Battery
Power” on Page 6).
Be sure
set to
CHANNEL
A
if you have not
is
installed any more
crysta l s in the TR C-9 3.
19
21-1615.fm Page 20 Thursday, August 5, 1999 11:07 AM
MAINTENANCE
Your RadioShack TRC-93 300 mW 3Channel Walkie-Talkie is an example of
superior design and craftsmanship. The
following suggestions will help you care
for your TRC-93 so you can enjoy it for
years.
Keep the TRC-93 dry. If it
gets wet, wipe i t dr y immediately. Liquids might contain
minerals that can corrode
the electronic circuits.
Handle the TRC-93 gently
and carefully. Dropping it
can damage circuit boards
and cases and can cause
the TRC-93 to work improperly.
Use and store the TRC-93
only in normal temperature
environments. Temperature
extremes can shorten the
life of electronic devices,
damage batteries, and distort or melt plastic parts.
Keep the TRC-93 away
from dust and dirt, which
can cause premature wear
of parts.
Wipe the TRC-93 with a
damp cloth occasionally to
keep it looking new. Do not
use harsh chemicals, cl eaning solvents, or strong detergents to clean the TRC-
93.
Modifying or tampering with the TRC-93’s
internal components can cause a malfunction and might invalidate your TRC93’s warranty and void your FCC authorization to operate it. If your TRC-93 is not
performing as it should, take it to your local RadioShack st ore for assistance.
20
21-1615.fm Page 21 Thursday, August 5, 1999 11:07 AM
SPECIFICATIONS
Receiver
Frequency Coverage ... 26.965 – 27.405 MHz
(Supplied with Channel 14 (27.125 MHz)
crystals in the Channel A position)
Sensitivity .................. 2 µV for 10 dB (S+N)/N
Adjacent Channel Selectivity ................ 15 dB
Audio Output (10% THD) .......... .... ... 400 mW
Current Drai n ....... ... .... .... ............ 32
T ransm itt er
Frequency Coverage ... 26.965 – 27.405 MHz
Power Input ............ 300 mW (Into 50Ω Load)
Power Output at No Modulation ....... 150 mW
Current Drain at No Modulation ......... 100 mA
Type of Modulation .................................... A3
AMC Range at 50 to 100%
Modulat ion ........... ........... ........... ........ ... 35 dB
Spurious Emission .............................. –67 dB
Frequency Tolerance .......................... 0.005%
Telescoping Antenna Impedance ............ 50
Antenna Length (Maximum) .............. 28
Dimension s (HWD) .......... 8
Weight .................................................. 8.8 oz
1
/
4
(210 × 71 × 48 mm)
180 mA
–
(Into 50Ω Load)
3
/8 In.
(721 mm)
13
7
/
16
1
×
(255 g)
/8 In.
2
×
Ω
Specifications are typical; individual units
might vary. Specifications are subject to
change and improvemen t wit hout notice.
21
21-1615.fm Page 22 Thursday, August 5, 1999 11:07 AM
NOTES
22
21-1615.fm Page 23 Thursday, August 5, 1999 11:07 AM
23
g
y
y
g
y
g
y
g
y
y
g
g
y
y
g
g
y
y
y
g
g
y
y
g
g
j
y g
y
21-1615.fm Page 24 Thursday, August 5, 1999 11:07 AM
Limited Ninety- Day Warranty
This product is warra nted by RadioShack against manufacturin
defects in material and workmanship under normal use for ninet
from RadioShack compan
RadioShack franchisee s and dealers. EXCE PT AS PROVIDED HEREIN, RadioShack MAKES NO EXPRESS
WARRANTIES AND ANY IMPLIED WARRANTIES, INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED
IN DURATION TO THE DURATION OF THE WRITTEN
LIMITED WARRANTIES CONTAINED HEREIN. EXCEPT AS PROVIDED HEREIN, RadioShack SHALL
HAVE NO LIABILITY OR RESPONSIBILITY TO CUSTOMER 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, INCLUDING, B UT NOT LIMI TED TO, A NY D AMA GE S RESU LTING FROM INCONVENIENCE, LOSS OF TIME, DATA ,
PROPERTY, REVENUE, OR PROFIT OR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES, EVEN IF RadioShack HAS BEEN ADVISED
OF THE POSSIBILITY OF SUCH DAMAGES.
Some states do not allow the lim itations on ho w lon
implied warrant
consequential d ama
clusions ma
In the event of a prod uct de fect dur in
riod, take the product and the RadioShack sales receipt
as proof of purchase da te to an
dioShack will, at its o ption, u nles s othe rwise prov ide d b
law: (a) correct the defect by product repair without
char
e for parts and labor; (b) re place the product with
one of the same or similar desi
chase price. All replac ed parts and products, and products on which a refun d is made, bec ome the proper t
RadioShack. New or reconditioned parts and products
ma
be used in the performance of warranty service. Repaired or replaced par ts and products are w arranted for
the remainder of the ori
char
ed for repair or replacement of the product made after the expiration of the warrant
This warrant
caused b
misuse, impro per or a bnormal us a
structions, improper installation or maintenance, alteration, li
htning or other inci dence of excess voltage or
current; (b) an
RadioShack Authorized Service Facilit
such as fuses or batteries; (d) cosmetic dama
transportation, shippi n
product removal, i nstallation, set-up service ad
or reinstallation.
This warrant
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
(90) days from the date of purchase
-owned stores and author ized
lasts or the exclusion of i ncidental or
es, so the above limita tions or ex-
not apply to you.
inal warranty period. You will be
does not cover: (a) damage or failure
or attributable to acts of God, abuse, accident,
repairs o ther than those pr ovided by a
or insurance costs; or (f) costs of
ives you specific legal rights, and you ma
the warranty pe-
RadioShack stor e. Ra-
n; or (c) refund t he pur-
period.
e, failure to follow in-
; (c) consumables
We Service What We Sell
an
of
e; (e)
ustment
3/97
RadioShack
A Division of Tandy Corporation
Fort Worth, Texas 76102
5A7 Printed in China
Loading...