19-902.fm Page 1 Tuesday, August 3, 1999 2:03 PM
Cat. No. 19-902
OWNER’S MANUAL
Please read before using this equipment.
PRS-102 UHF
10-Channel
Personal Radio Service Transceiver
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19-902.fm Page 3 Tuesday, August 3, 1999 2:03 PM
FEATURES
Your RadioShack PRS-102 10-Channel Personal
Radio Service Transceiver is a portable, two-way
GMRS (General Mobile Radio Service) transceiver
that you can carry almost anywhere. The transceiver
is compact and light, making it an ideal choice for your
personal needs.
Your transceiver has the following features:
Ten Frequencies
— you can set the transceiver to
operate on any of these frequencies:
Channel
Frequency
1
2
462.5625 MHz
462.5875 MHz
462.6125 MHz
462.6375 MHz
462.6625 MHz
462.6875 MHz
462.7125 MHz
462.5750 MHz
462.6250 MHz
462.6750 MHz
3
4
5
6
7
8
9
10
Note:
Operation on GMRS frequencies requires a
Federal Communications Commission (FCC) license.
PLL (Phase-Locked Loop)-Controlled Circuitry
—
provides accurate and stable channel selection.
Built-In Modulation Limiter Circuit
— automatically
adjusts for a wide variety of voice levels to ensure an
understandable transmission.
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Rugged Design — built to stand up to daily use in a
wide range of environments.
Battery Low and Transmit Indicator — shows the
battery pack’s condition and lights when you transmit.
Supplied Battery Charger — conveniently recharg-
es your transceiver’s supplied battery pack up to sev-
eral hundred times for reduced operating costs.
Earphone Jack and External Microphone Jack —
let you use an earphone or external microphone to
help ensure understandable communications in noisy
areas.
CTCSS (Continuous Tone Coded Squelch Sys-
tem) Option (not supplied) — helps reduce interfer-
ence from other nearby systems operating on the
same frequency.
We recommend you record your transceiver’s serial
number here. The number is on the back of the trans-
ceiver.
Serial Number ____________________________
4
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19-902.fm Page 5 Tuesday, August 3, 1999 2:03 PM
CONTENTS
FCC Regulations . . . . . . . . . . . . . . . . . . . . . . . . . 6
FCC License Required . . . . . . . . . . . . . . . . . . 6
FCC Rules Part 95, Subpart A . . . . . . . . . . . . 7
Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Installing and Removing the Battery Pack . . 10
Installing the Antenna . . . . . . . . . . . . . . . . . . 11
Charging the Battery Pack . . . . . . . . . . . . . . 12
Checking the Battery Power . . . . . . . . . 14
Attaching and Removing the Belt Clip . . . . . 15
Connecting Audio Accessories . . . . . . . . . . . 16
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Operational Hints . . . . . . . . . . . . . . . . . . . . . 18
CTCSS Option . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Why Use CTCSS? . . . . . . . . . . . . . . . . . . . . 19
Setting the CTCSS Tone . . . . . . . . . . . . . . . 20
Optional Accessories. . . . . . . . . . . . . . . . . . . . . 24
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . 25
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5
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19-902.fm Page 6 Tuesday, August 3, 1999 2:03 PM
FCC REGULATIONS
FCC LICENSE REQUIRED
Before you operate the transceiver, you must obtain
your license. It is illegal to transmit without the appro-
priate license, which you can get by submitting a com-
pleted Federal Communications Commission (FCC)
Form 574.
You can get the latest FCC forms and instructions
from several sources:
• To have the forms faxed to you by the FCC, call
the FCC Fax-On-Demand system at 202-418-
0177 from your fax machine and request Docu-
ment 000574 for all forms and instructions, or
Document 005741 for instructions only.
• To have the forms mailed to you, call the FCC
Forms Hotline at 800-418-FORM.
For questions concerning the license application,
contact the FCC at 717-337-1212 or 1-800-322-1117.
6
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19-902.fm Page 7 Tuesday, August 3, 1999 2:03 PM
FCC RULES PART 95, SUBPART A
You must be familiar with Part 95, Subpart A of FCC
Rules and Regulations before you operate your trans-
ceiver. The operation instructions in this manual con-
form to Part 95, but do not cover all items in Part 95.
In part, Part 95, Subpart A, states that:
• You must be 18 years of age, or older, and not a
representative of a foreign government to get a
license.
• Businesses or associations cannot qualify for a
GMRS license.
• A licensee can let immediate family members
operate under GMRS Rules and Regulations.
• Channels or channel pairs assigned to GMRS
systems are available on a shared basis and will
not be assigned for the exclusive use of any lic-
ensee.
• As licensee, you are responsible for proper
operation of all transceivers operating under
your license.
• You must take reasonable precautions to pre-
vent harmful interference to others operating on
the same frequency.
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19-902.fm Page 8 Tuesday, August 3, 1999 2:03 PM
• You must not transmit program material of any
kind used in connection with commercial broad-
casting.
• You must not provide a service that is normally
handled by telephone or telegraph unless such
broadcasts involve the safety of life or property
or in emergencies such as an earthquake, hurri-
cane, flood, or a similar disaster where normal
communication channels are disrupted.
Violating any of the provisions of Part 95 can result in
fines and/or confiscation of equipment.
The General Mobile Radio Service is under the juris-
diction of the Federal Communications Commission
(FCC). Any adjustments or alterations that would alter
the performance of the transceiver so it no longer
meets the original FCC type acceptance or would
change the frequency-determining method are strictly
prohibited.
Replacement or substitution of crystals, transistors,
ICs, regulator diodes, or any other component that is
of a unique nature, with components other than those
recommended, can violate the technical regulations
of FCC Rules and Regulations or violate type accep-
tance requirements of the rules.
8
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Your transceiver might cause TV or radio interference
even when it is operating properly. To determine
whether your transceiver is causing the interference,
turn off your transceiver. If the interference goes
away, your transceiver is causing it. Try to eliminate
the interference by:
• Moving your transceiver away from the TV or
radio
• Contacting your local RadioShack store for help
If you cannot eliminate the interference, the FCC re-
quires that you stop using your transceiver.
9
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19-902.fm Page 10 Tuesday, August 3, 1999 2:03 PM
PREPARATION
Before you use the transceiver, you must be properly
licensed by the FCC. If you already have a GMRS li-
cense, you can immediately use the transceiver.
INSTALLING AND REMOVING
THE BATTERY PACK
Caution:
Do not remove the plastic wrap from the
battery pack. Doing so can permanently damage the
battery.
1. Be sure the transceiver is turned off.
2. Unlock the battery compartment cover latch on
each side. (The orange tabs should be visible.)
Then slide the cover down and lift it off.
Battery
Compartment
Cover
Cover
Latch
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3. With the battery label facing up, align the battery
pack and radio’s battery contacts. Apply slight
pressure to the bottom of the battery pack and
press it into the compartment, as shown.
4. Slide the battery cover back into place and lock
it with the latches.
To remove the battery pack, unlock the compartment
and remove the cover. Then turn the transceiver face
down and gently tap the battery pack into your palm.
INSTALLING THE ANTENNA
To install the antenna, place the threaded end of the
antenna over the antenna connector on top of the
tranceiver and screw it into place.
11
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19-902.fm Page 12 Tuesday, August 3, 1999 2:03 PM
CHARGING THE BATTERY PACK
You must charge the battery pack with the supplied
battery charger or with an optional charger (see “Op-
tional Accessories” on Page 24) before you use the
tranciever for the first time and whenever the battery
becomes low.
Follow these steps to charge the battery pack using
the supplied charger.
1. If the transceiver is on, turn VOL•OFF counter-
clockwise to turn it off.
2. Lift the protective cover away from the acces-
sory jacks.
3. Plug the charger into the small (lower) jack, then
connect the charger to a standard AC outlet.
The charger’s charge indicator lights.
Charger
Charge
Indicator
Note:
Charging takes about 10 hours.
12
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Cautions:
• Do not operate the transceiver while you charge
the battery pack. Using the battery charger
mutes the transceiver’s speaker.
• To ensure a full charge, do not charge the bat-
tery pack in an area where the temperature is
above 95°F. To prevent permanent battery
power loss, do not charge the battery at temper-
atures below 43°F.
• Use only the supplied or recommended charg-
ers to recharge the transceiver’s battery pack.
Using any other charger could permanently
damage your transceiver or the battery pack.
• A fully charged battery will last about 8 hours in
the PRS-102.
Important: This transceiver uses a rechargeable
nickel-cadmium battery pack. At the end of the battery
pack’s useful life, it must be recycled or disposed of
properly. Contact your local, county, or state hazard-
ous waste management authorities for information on
recycling or disposal programs in your area. Some
options that might be available are: municipal curb-
side collection, drop-off boxes at retailers, recycling
collection centers, and mail-back programs.
13
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Checking the Battery Power
1. Rotate VOL•OFF clockwise to turn on the trans-
ceiver.
2. Press the push-to-talk button on the left side of
the transceiver. If the indicator next to the
antenna lights red, there is sufficient battery
power for transmission. If the indicator does not
light, you need to recharge the battery pack.
VOL • OFF
Top View
Battery Low/Transmit
Indicator
14
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19-902.fm Page 15 Tuesday, August 3, 1999 2:03 PM
ATTACHING AND REMOVING THE
BELT CLIP
To attach the belt clip, align it with the rails on the
back of the transceiver and slide the clip down until it
snaps into place.
To remove the belt clip, lift the release tab away from
the radio. While holding the tab, slide the belt clip up
off the mounting rails.
Release
Tab
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19-902.fm Page 16 Tuesday, August 3, 1999 2:03 PM
CONNECTING AUDIO
ACCESSORIES
You can order a wide variety of audio accessories for
your transceiver from your local RadioShack store.
See “Optional Accessories” on Page 24.
Follow these steps to connect an audio accessory.
Protective
Cover
Audio
Accessory
Jacks
1. Turn off the transceiver.
2. Lift the protective cover away from the acces-
sory jacks.
3. If the accessory has two plugs, align the smaller
plug with the small jack and the larger plug with
the large jack and plug them in. If the accessory
has a single plug, plug it into the matching jack.
16
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19-902.fm Page 17 Tuesday, August 3, 1999 2:03 PM
OPERATION
VOL•OFF
1. Turn
clockwise to turn on the trans-
ceiver, then rotate the channel knob to select the
desired channel.
VOL • OFF
2. Press the transceiver’s monitor button, below
the push-to-talk button. While you hold the mon-
itor button, adjust the volume to a comfortable
level.
Push-to-Talk
Button
Monitor
Button
3. To transmit, press and hold the push-to-talk but-
ton, then hold your transceiver about 3 inches
from your mouth and speak clearly in a normal
tone of voice. The indicator next to the antenna
lights red when you hold down the push-to-talk
button.
4. When you finish speaking, release the push-to-
talk button to hear a response.
VOL•OFF
5. To turn off the transceiver, turn
terclockwise.
coun-
17
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19-902.fm Page 18 Tuesday, August 3, 1999 2:03 PM
OPERATIONAL HINTS
Your transceiver’s range varies depending on factors
such as position, terrain, and battery condition.
Range can best be described as line of sight. The
fewer obstructions you have between two tranceivers,
the better range you can expect. Buildings absorb
transmitted signals and, if they contain metal, might
completely block the signals. Trees and heavy cloud
formations have a similar effect, though not as se-
vere. If you are near a lake or the ocean, you might
get excellent range.
To ensure maximum range, operate the transceiver
with the battery pack fully charged. As the voltage de-
creases, the range decreases.
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19-902.fm Page 19 Tuesday, August 3, 1999 2:03 PM
CTCSS OPTION
WHY USE CTCSS?
CTCSS (Continuous Tone-Coded Squelch System)
is available as an optional add-on to your transceiver.
When CTCSS is turned on, the transceiver transmits
a selected tone with your transmission. This tone is
too low for you to hear, but other transceivers can de-
tect it. If CTCSS is turned on and set to the same tone
on the receiving transceiver, it only receives transmis-
sions that include the tone. This way, CTCSS can
help keep you from hearing other users on the same
frequency.
For example, if two different groups operate trans-
ceivers in the same area on the same frequency but
use a different CTCSS tone, they only hear their own
broadcasts.
Note:
CTCSS does not make your conversations pri-
vate. Other users can still hear your transmissions if
they use the same frequency.
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SETTING THE CTCSS TONE
Notes:
• If you are a part of a talk group, be sure all of the
radios in the talk group use the same tone.
• You must install the CTCSS option before you
can set the CTCSS tone.
1. Turn off the radio.
2. Unlock the battery compartment cover latch on
each side. (The orange tabs should be visible.)
Then slide the cover down and lift it off.
Battery
Compartment
Cover
Cover
Latch
3. Remove the battery pack and tray. This exposes
the bank of CTCSS switches.
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4. Select any one CTCSS code found in the table
on Pages 22 and 23, then find the correspond-
ing switch positions in the tables.
5. With a pointed instrument, such as a pin, place
the dip switches in the positions that match the
desired tone.
For example:
Up
Position
6
4
5
1
3
7
8
2
Down
Position
Note: Setting Switch 8 to the down position dis-
ables the CTCSS feature. You must set the
switch to the up position to turn on CTCSS.
6. After setting your CTCSS code, replace the bat-
tery tray, battery pack, and battery compartment
cover, then turn on the transceiver.
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SWITCH POSITION (U=Up, D=Down)
CTCSS FREQ
CODE
XZ
XA
WA
XB
WB
YZ
YA
YB
ZZ
(Hz)
1
2
D
D
D
U
D
D
D
U
D
D
D
U
D
U
D
U
D
U
D
U
3
4
5
D
D
D
D
U
D
U
D
D
U
D
U
U
U
D
D
D
D
U
U
6
7
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
8
67.0
D
U
D
U
D
U
D
U
D
U
D
U
U
U
U
U
U
U
U
U
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
U
D
U
D
D
D
U
U
U
U
U
U
D
D
U
D
D
U
U
U
D
D
U
D
U
U
D
D
U
U
D
D
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
71.9
74.4
77.0
79.7
82.5
85.4
88.5
91.5
ZA
ZB
1Z
94.8
97.4
100.0
103.5
107.2
110.9
114.8
118.8
123.0
127.3
131.8
1A
1B
2Z
2A
2B
3Z
3A
3B
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19-902.fm Page 23 Tuesday, August 3, 1999 2:03 PM
SWITCH POSITION (U=Up, D=Down)
CTCSS FREQ
CODE
(Hz)
1
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
X
2
3
D
D
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
X
4
5
6
U
U
D
D
U
U
D
D
U
U
D
D
U
U
D
D
U
U
X
7
8
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
D
4Z
136.5
141.3
146.2
151.4
156.7
162.2
167.9
173.8
179.9
186.2
192.8
203.5
210.7
218.1
225.7
233.6
241.8
250.3
D
U
D
U
D
U
D
U
D
U
D
U
D
U
D
U
D
U
X
U
U
D
D
D
D
D
D
D
D
U
U
U
U
U
U
U
U
X
U
U
D
D
D
D
U
U
U
U
D
D
D
D
U
U
U
U
X
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
X
4A
4B
5Z
5A
5B
6Z
6A
6B
7Z
7A
M1
M2
M3
M4
M5
M6
M7
Disable
CTCSS
Note: X = either Up or Down
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OPTIONAL ACCESSORIES
RadioShack
Cat. No.
Description
19-351
Remote Speaker Microphone
These items are available by special order from
your local RadioShack store:
19-352
19-353
19-354
19-355
19-356
19-357
19-358
19-359
19-360
19-361
19-362
19-363
19-364
19-365
19-367
Earpiece w/Microphone
External VOX Adapter
Earbud
Headset w/Swivel Boom Microphone
Earbud w/Clip Microphone and PTT
Flexible Ear Receiver
Leather Carry Case with Belt Loop
Nylon Carry Case
Spring Action 3-Inch Belt Clip
Ni-Cd Battery Pack
120 Volt 3-Hour Desktop Charger
120 Volt 10-Hour Desktop Charger
CTCSS Kit
BNC Adapter
UHF Stubby Antenna
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TROUBLESHOOTING
If you have a problem operating your transceiver, first
review this manual and be sure that you understand
and have followed all instructions. If you still have
problems, review the following troubleshooting guide.
If the radio still does not work properly after you follow
the troubleshooting guide, contact your local Ra-
dioShack store for additional assistance.
Note:
Do not disassemble the radio in any way. The
radio contains no user-serviceable components.
Possible
Symptom
Problem
Solution
Radio does
not operate.
• Battery pack is
dead.
• Press and hold the
push-to-talk button
while looking at the
indicator. If the indi-
cator does not light
or turns off, charge
the battery pack.
• Battery pack is
not positioned
correctly in the
transceiver.
• Correctly install the
battery pack.
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19-902.fm Page 26 Tuesday, August 3, 1999 2:03 PM
Possible
Symptom
Problem
Solution
Battery pack • Battery pack
• If you use an
does not
charge or
last long
enough.
incorrectly
charged.
optional charger, be
sure the battery
pack is correctly
positioned. If you
use the supplied
battery charger, be
sure the charger’s
indicator turns on.
• Battery pack not • Do not turn on the
fully charged.
transceiver while
charging the battery
pack . It takes longer
to charge the battery
pack if the trans-
ceiver is on.
• Heavy usage.
• Usage beyond the
standard duty cycle
of 5% transmitting,
5% receiving, and
90% idle might
require a spare bat-
tery pack or
recharging during
the day.
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19-902.fm Page 27 Tuesday, August 3, 1999 2:03 PM
Possible
Symptom
Problem
Solution
Other users • Transceivers
• Have all transceiv-
ers set to the same
frequency.
do not hear
your trans-
missions or
you do not
hear other
transmis-
sions.
are on different
frequencies.
• CTCSS set-
tings are differ-
ent.
• If you use the
CTCSS option, ver-
ify that other trans-
ceivers are set to
the same CTCSS
code (see “CTCSS
Option”).
• Transceivers
with and with-
out the CTCSS
option are being
used.
• CTCSS must be dis-
abled to hear trans-
ceivers not using
CTCSS (see
“CTCSS Option”).
You hear
other con-
versations or
noise.
• Other users are • Users do not have
licensed to use
the same fre-
quency in your
area.
exclusive use of fre-
quencies. Adding
CTCSS screens out
other users’ conver-
sations on your
transceiver, but your
conversations are
still heard by others
sharing your fre-
quency (see
“CTCSS Option”).
• You might have • Check CTCSS
a CTCSS board
installed that is
not activated.
Switch 8 to verify
that it is in the UP
position (see
“CTCSS Option”).
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19-902.fm Page 28 Tuesday, August 3, 1999 2:03 PM
Possible
Symptom
Problem
Solution
Limited talk
range.
• You are using
the transceiver
in a basement,
steel structure,
concrete build-
ing, vehicle, or
heavy foliage.
• Move to a different
location. For the
best range, always
use the supplied
longer antenna. An
optional stubby
antenna reduces
talk range by 50%.
• The radio is
located low or
very close to
your body, as in
a pocket or on a
belt.
• The higher you hold
the radio, and the
further away from
your body, the better
the range.
• Battery pack
power is low.
• Charge the battery
pack.
You hear
constant
static.
• The battery
pack is not fully
charged.
• Press and hold the
push-to-talk button
while looking at the
indicator on top of
transceiver. If the
indicator does not
light or turns off,
charge the battery
pack .
• You are using
the transceiver
near computers
or electronic
• You can add the
CTCSS option to
screen out this type
of interference.
equipment.
28
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19-902.fm Page 29 Tuesday, August 3, 1999 2:03 PM
MAINTENANCE
Your RadioShack PRS-102 UHF 10-Channel Person-
al Radio Service Transceiver is an example of supe-
rior design and craftsmanship. The following
suggestions will help you care for the transceiver so
you can use it for years.
Keep the transceiver dry. If it gets wet, im-
mediately wipe it dry. Some liquids con-
tain minerals that can corrode the
electronic circuits.
Use and store the transceiver only in nor-
mal temperature environments. Temper-
ature extremes can shorten the life of
electronic devices, damage batteries,
and distort or melt plastic parts.
Handle the transceiver gently and careful-
ly. Dropping it can damage the circuit
boards and can cause the transceiver to
work improperly.
Keep the transceiver away from dust and
dirt, which can cause premature wear of
parts.
29
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19-902.fm Page 30 Tuesday, August 3, 1999 2:03 PM
Wipe the transceiver with a damp cloth
CLEANER
occasionally to keep it looking new. Do
not use harsh chemicals, cleaning sol-
vents, or strong detergents to clean the
transceiver. Use of chemicals or deter-
gents could damage the plastic case, and
leak into the transceiver.
Modifying or tampering with the transceiver’s internal
components (unless otherwise stated in this manual)
can cause a malfunction and might invalidate its war-
ranty and void your FCC authorization to operate it. If
your transceiver is not performing as it should, take it
to your local RadioShack store for assistance.
30
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19-902.fm Page 31 Tuesday, August 3, 1999 2:03 PM
SPECIFICATIONS
General
Channels ............................................................. 10
7
9
3
Size ........................................ 6 /8 × 2 /16 × 1 /8 Inches
Weight (with battery pack) .................... 11.5 ounces
Power ............ Nickel Cadmium Battery Pack (7.5V)
Average Battery Life .................................... 8 Hours
Transmitter
RF Power Output ......................................... 2 Watts
Spurious/Harmonic Emissions ................... 50 µVolts
Frequency Stability .................................. ±0.0005%
Maximum Frequency Separation ................... 8 MHz
Audio Distortion ................................................ <5%
FM Noise ...................................................... –40 dB
TIA/EIA Audio Response .......................... +1, –3 dB
Receiver
Channel Spacing .......................................... 25 kHz
Sensitivity (12 dB SINAD) ....................... 0.25 µVolts
Selectivity ...................................................... –50 dB
Intermodulation ............................................. –50 dB
Spurious & Image Rejection ......................... –50 dB
Frequency Stability (–22 to 140°F) .......... ±0.0005%
Maximum Frequency Separation ................... 8 MHz
Audio Output (@ 1 kHz, 60% Dev.)
EIA (@ <5% Dist.) ............................... 250 mW
Specifications are typical; individual units might vary.
Specifications are subject to change and improve-
ment without notice.
31
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19-902.fm Page 32 Tuesday, August 3, 1999 2:03 PM
RadioShack Limited Warranty
This product is warranted against defects for 1 year from
date of purchase from RadioShack company-owned stores
and authorized RadioShack franchisees and dealers.
Within this period, we will repair it without charge for parts
and labor. Simply bring your RadioShack sales slip as
proof of purchase date to any RadioShack store. Warranty
does not cover transportation costs. Nor does it cover a
product subjected to misuse or accidental damage.
EXCEPT AS PROVIDED HEREIN, RadioShack MAKES
NO EXPRESS WARRANTIES AND ANY IMPLIED WAR-
RANTIES ARE LIMITED IN DURATION TO THE DURA-
TION OF THE WRITTEN LIMITED WARRANTIES
CONTAINED HEREIN. Some states do not permit limita-
tion or exclusion of implied warranties; therefore, the afore-
said limitation(s) or exclusion(s) may not apply to the
purchaser.
This warranty gives you specific legal rights and you may also other
rights which vary from state to state.
We Service What We Sell
10/95
RadioShack
A Division of Tandy Corporation
Fort Worth, Texas 76102
6880904Z78-O
5/96
Printed in the USA
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