12-1610.fm Page 1 Friday, July 9, 1999 10:10 AM
Cat. No. 12-1610
OWNER’S MANUAL
Please read before using this equipment.
CR-307
AM/FM•Weather Clock Radio
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CONTENTS
Preparation ........................................................................................................... 4
Connecting Power ........................................................................................... 4
Installing the Backup Battery .......................................................................... 4
Setting the Time .............................................................................................. 5
Using Headphones .............................................................................................. 6
Listening Safely ............................................................................................... 6
Clock Radio Operation ........................................................................................ 7
Changing the Display Brightness .................................................................... 7
Playing the Radio ............................................................................................ 7
Using the Alarm .............................................................................................. 8
Using Snooze .................................................................................................. 8
Using the Sleep Timer ..................................................................................... 9
Receiving Weather Broadcasts ........................................................................ 10
Weather Radio Operation ............................................................................. 10
Using the Alert Tone ...................................................................................... 10
Testing Alert Operation ................................................................................. 11
Testing Alert Reception ........................................................................... 11
Using the ALERT TEST Button .............................................................. 12
Care and Maintenance ...................................................................................... 13
The FCC Wants You to Know ....................................................................... 13
Specifications .................................................................................................... 14
This symbol is intended to alert you
to the presence of uninsulated dan-
Warning: To prevent fire or shock
hazard, do not expose this product
to rain or moisture.
gerous voltage within the product’s
enclosure that might be of sufficient
magnitude to constitute a risk of
electric shock. Do not open the prod-
uct’s case.
CAUTION
RISK OF ELECTRIC SHOCK.
!
This symbol is intended to inform
you that important operating and
maintenance instructions are includ-
ed in the literature accompanying
this product.
DO NOT OPEN.
!
CAUTION: TO REDUCE THE RISK OF
ELECTRIC SHOCK, DO NOT REMOVE
COVER OR BACK. NO USER-SERVICE-
ABLE PARTS INSIDE. REFER SERVIC-
ING TO QUALIFIED PERSONNEL.
The graphical symbols with supple-
mental markings are on the bottom of
the clock radio.
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PREPARATION
Notes:
• To prevent unnecessary drain on
CONNECTING POWER
Plug the clock radio’s power cord into
a standard AC outlet. The display
flashes.
the backup battery, install the bat-
tery after you plug in the AC
power cord.
• The BATTERY SENTINEL indica-
tor lights when the battery is weak
or missing. Replace the battery
when the indicator lights or at
least every 6 months.
Illust.
• If the display flashes after an AC
power failure, the battery is too
low to run the clock. Replace the
battery and reset the clock.
INSTALLING THE
BACKUP BATTERY
To keep the clock running during an
AC power failure, install a 9-volt bat-
tery. For the best performance, we
recommend an alkaline battery such
as RadioShack Cat. No. 23-553.
• If your radio’s battery becomes
weak during a power failure, your
radio might not sound a tone
when an emergency or test alert is
broadcast. Test your radio’s
reception periodically (see “Test-
ing Alert Reception” on Page 11),
and replace the battery if the tone
does not sound.
The clock’s display does not light
while operating from battery backup
power, but the clock runs and the
weather alert feature works. While the
clock radio is operating from battery
backup power:
Cautions:
• Remove the battery if you do not
plan to use the clock radio for a
week or more. Batteries can leak
chemicals and damage the radio.
— If you set FM/AM/WX/ALERT to FM,
AM, or WX, the clock runs and the
clock alarm will still sound at the
preset alarm time for up to 8
hours.
• Use only a fresh battery of the
required size and type. Do not use
a rechargeable battery in your
radio.
— If you set FM/AM/WX/ALERT to
ALERT, the clock runs and the
clock alarm will still sound at the
preset alarm time, but only for up
to 3 hours.
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Follow these steps to install the back-
up battery.
SETTING THE TIME
1. While you press and hold TIME,
press HOUR. The hour digits
advance by 1 each time you press
HOUR. You can press and hold
HOUR to rapidly advance the hour
digits.
1. Press the tab and lift off the bat-
tery compartment cover.
Illust.
Illust.
2. Snap the battery onto the battery
connector and place the battery in
the compartment.
The PM indicator appears
in the upper left corner of the dis-
play for a PM hour.
Note:
2. While you press and hold TIME,
press MINUTE. The minute digits
advance by 1 each time you press
MINUTE. You can press and hold
MINUTE to rapidly advance the
minute digits.
Illust.
Illust.
3. Replace the cover.
4. Press SNOOZE to turn off the BAT-
TERY SENTINEL indicator.
You can press and hold SLEEP
Note:
and ALARM together to display the
seconds and one digit of the minutes.
5
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USING HEADPHONES
For private listening, you need a pair of
headphones (not supplied) with a /8-
LISTENING SAFELY
1
inch (3.5 mm) plug. Your local Ra-
dioShack store has a wide selection of
headphones.
To protect your hearing, follow these
guidelines when you use headphones.
• Set the volume to the lowest set-
ting before you begin listening.
After you begin listening, adjust
the volume to a comfortable level.
Plug the headphones into the EAR-
PHONE jack on the back of the clock
radio.
• Do not listen at extremely high
volume levels. Extended high vol-
ume listening can lead to perma-
nent hearing loss.
Illust.
• Once you set the volume, do not
increase it. Over time, your ears
adapt to the volume level, so a
volume level that does not cause
discomfort might still damage your
hearing.
Note: When you connect head-
phones, the internal speaker is auto-
matically disconnected.
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CLOCK RADIO OPERATION
3. Set FM/AM/WX/ALERT to FM or
AM.
CHANGING THE
DISPLAY BRIGHTNESS
You can change the display bright-
ness by setting DIMMER to HIGH or
LOW.
Illust.
4. Rotate TUNING to the desired sta-
Illust.
tion.
Illust.
PLAYING THE RADIO
Follow these steps to listen to AM or
FM radio broadcasts.
5. Adjust VOLUME to the desired
sound level.
Note: To listen to National Weather
Service broadcasts, see “Weather Ra-
dio Operation” on Page 10.
Illust.
1. Rotate VOLUME to set the radio’s
volume to its minimum level.
2. Set FUNCTION to ON.
6. To turn off the radio, set FUNC-
TION to OFF.
Notes:
Illust.
• For the best AM reception, rotate
the clock radio (the AM antenna is
built-in).
• For the best FM reception, fully
extend the power cord (the power
cord is also the FM antenna).
7
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ALARM
•
•
— To sound the buzzer
USING THE ALARM
at the preset alarm time.
You can set an alarm so the buzzer
sounds or the radio plays at a speci-
fied time. Follow these steps to set the
alarm time.
AUTO
— To turn on the radio at
the preset alarm time. If you set
FUNCTION AUTO,
VOLUME
to
adjust
for the desired radio
sound level.
FUNCTION
OFF
1. Set
to
.
5. At the preset alarm time, the
buzzer sounds or the radio plays.
To silence the buzzer or radio, set
ALARM
2. While you press and hold
,
HOUR
press . The hour digits
advance by 1 each time you press
FUNCTION
OFF
ALARM
or press
to
HOUR
HOUR
digits.
. You can press and hold
to rapidly advance the hour
once. If you do not manually turn
off the buzzer or radio, it contin-
ues to sound for about 2 hours,
then sounds again the next day.
Illust.
Notes:
• The ALARM indicator lights in the
lower left corner of the display
when the buzzer or radio is set to
sound.
Note: The PM indicator appears
in the upper left corner of the dis-
play for PM hours.
ALARM
• Press
to view the preset
alarm time at any time.
ALARM
3. While you press and hold
MINUTE
,
press
. The minute digits
USING SNOOZE
advance by 1 each time you press
MINUTE
MINUTE
. You can press and hold
to rapidly advance the
To temporarily silence the buzzer or
SNOOZE
radio, press
. The alarm auto-
minute digits.
matically sounds again after about 9
minutes.
Illust.
You can repeat this for at least 2
FUNC-
hours. To turn off the alarm, set
TION OFF
to
.
FUNCTION
4. Set
to one of the fol-
lowing:
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• To play the radio for the maximum
of 2 hours:
USING THE SLEEP
TIMER
SLEEP
— Press and hold
. The
The sleep timer lets you set the radio
to play for up to 2 hours then automat-
ically turn off, so you can have the ra-
dio play as you go to sleep.
clock radio displays 0:59.
SLEEP
— While you hold
, press
HOUR
once. The time increas-
es to 1 hour, 59 minutes.
To use the sleep timer, first make sure
Note: The radio turns off after 1
hour, 59 minutes, 59 seconds (2
hours). You cannot adjust the sec-
onds.
FUNCTION
the radio is off by setting
OFF
to
.
Follow these guidelines to set the
sleep timer to the desired time.
• To play the radio for more than 1
hour, but less than 2 hours:
SLEEP
— Press and hold
. The
Illust.
clock radio displays 0:59.
SLEEP
— While you hold
, press
HOUR
once. The time increas-
es to 1 hour, 59 minutes.
— While you continue to hold
SLEEP
MINUTE
. The
, press
minutes decrease by 1 each
MINUTE
• To play the radio for 1 hour, press
SLEEP
once.
time you press
MINUTE
play time.
. Hold
to rapidly decrease the
• To play the radio for less than 1
hour:
SLEEP
— Press and hold
. The
To turn off the radio before it automat-
SNOOZE
clock radio displays 0:59.
ically turns off, press
.
SLEEP
— While you hold
, press
. The minutes decrease
by 1 each time you press
MINUTE MINUTE
MINUTE
Illust.
. Hold
to rapid-
ly decrease the play time.
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RECEIVING WEATHER BROADCASTS
5. Set WX ANTENNA to LINE.
WEATHER RADIO
OPERATION
Illust.
Follow these steps to receive National
Weather Service broadcasts.
1. To turn on the radio, set FUNC-
TION to ON.
Note: If the signal is broken or
noisy, set WX ANTENNA to ROD.
Then extend the telescoping
antenna to its full length. If recep-
tion is still not clear, try placing the
radio near an outside wall or win-
dow.
Illust.
2. Set FM/AM/WX/ALERT to WX.
6. To turn off the radio, set FUNC-
TION to OFF.
Illust.
USING THE ALERT TONE
You can set the radio to alert you only
when it detects a weather emergency
broadcast so you do not have to con-
tinuously listen to the National Weath-
er Service broadcasts.
3. Adjust VOLUME to a comfortable
listening level.
4. Set CHANNEL to the channel (1–7)
that produces the clearest signal.
1. Set FUNCTION to ON and FM/AM/
WX/ALERT to ALERT to set the
radio to the alert mode. The
ALERT indicator lights, and the
receiver is silent.
Illust.
Illust.
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2. Set ALERT LOCK as follows:
TESTING ALERT
OPERATION
Illust.
For your radio to be effective, you
must place the radio:
• Where it can receive an emer-
gency alert signal (see “Testing
Alert Reception”)
• ON — When the radio receives
an alert signal, the siren sounds
continuously until you change
the FM/AM/WX/ALERT or ALERT
LOCK setting.
• Where you can hear its alert tone
(see “Using the ALERT TEST But-
ton”)
Once you determine a location that
meets these two conditions, leave the
radio there for the best protection.
• OFF — When the radio receives
an alert signal, the siren sounds
only during the 10-second alert
signal.
Testing Alert Reception
3. To silence the siren, set FM/AM/
WX/ALERT to WX. You hear the
current weather broadcast.
The fact that you get clear voice re-
ception or that the tone sounds when
you set ALERT TEST to ON (see “Us-
ing the ALERT TEST Button”) does
not guarantee that an emergency alert
signal will trigger your radio’s alert
tone. Also, if you are in a fringe area,
an emergency alert signal might trig-
ger your radio while it is in one place,
but not in another place (even close
by).
Notes:
• If severe weather threatens, do
not wait for an alert tone; turn on
your radio and monitor the latest
weather information.
• With ALERT LOCK set to OFF, the
alert sounds for 10 seconds. If you
set the switch to WX immediately
after the siren starts to sound, you
hear the tone for a short period,
and then the emergency informa-
tion.
To test for actual reception, your radio
must receive a test or emergency alert
signal. The National Weather Service
(NWS) broadcasts a test alert every
week on Wednesday between 11 AM
and 12 Noon.
• The radio sounds the alert siren at
full power, regardless of the
radio’s volume setting.
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To find out the specific test schedule
in your area, contact your local Na-
tional Oceanic and Atmospheric Ad-
ministration (NOAA) or National
Weather Service office. These offices
are usually listed in the telephone
book under “US Government.”
Using the ALERT TEST
Button
The ALERT TEST button lets you hear
the alert tone the radio produces but
does not test the radio’s receiver or in-
dicate that your radio will receive an
emergency alert.
To verify that your radio receives the
test alert properly, set ALERT LOCK to
ON during the time when the test tone
is broadcast in your local area.
1. Set FUNCTION to ON and set FM/
AM/WX/ALERT to ALERT.
2. Set ALERT TEST to ON. While the
tone sounds, walk away from the
radio to determine how far away
from it you can get and still hear
the tone.
If the test alert signal does not trigger
your radio’s tone, you are either out of
range of the signal or AC power is dis-
connected and your radio’s backup
battery is weak.
Illust.
If you take the radio with you to
Note:
use when you travel, you cannot be
sure that an emergency alert signal
will trigger the radio in its new location,
unless you test it during the test alert
time in the new area.
Notes:
• If ALERT LOCK is set to ON, the
tone sounds until you set FM/
AM/WX/ALERT to WX, AM, or
FM.
• If ALERT LOCK is set to OFF,
the tone sounds only while
ALERT TEST is set to ON.
3. To stop the alert sound, set ALERT
TEST to OFF.
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CARE AND MAINTENANCE
•
Your Optimus CR-307 AM/FM Weath-
Modifying or tampering with the clock
radio’s internal components can
cause a malfunction and might invali-
date your clock radio’s warranty and
void your FCC authorization to oper-
ate it. If your clock radio is not per-
forming as it should, take it to your
local RadioShack store for assistance.
er Clock Radio is an example of supe-
rior design and craftsmanship. The
following suggestions will help you
care for your clock radio so you can
enjoy it for years.
• Keep the clock radio dry. If it gets
wet, wipe it dry immediately. Liq-
uids might contain minerals that
can corrode the electronic circuits.
THE FCC WANTS YOU
TO KNOW
• Use and store the clock radio only
in normal temperature environ-
ments. Temperature extremes can
shorten the life of electronic
devices and distort or melt plastic
parts.
Your clock radio might cause TV or ra-
dio interference even when it is oper-
ating properly. To determine whether
your clock radio is causing the inter-
ference, turn off your clock radio. If the
interference goes away, your clock ra-
dio is causing it. Try to eliminate the
interference by:
• Keep the clock radio away from
dust and dirt, which can cause
premature wear of parts.
• Handle the clock radio gently and
carefully. Dropping it can damage
circuit boards and the case and
can cause the clock radio to work
improperly.
• Moving your clock radio away
from the receiver
• Contacting your local RadioShack
store for help
• Use only a fresh battery of the
required size and type. Old batter-
ies can leak chemicals that dam-
age your clock radio’s electronic
parts.
If you cannot eliminate the interfer-
ence, the FCC requires that you stop
using your clock radio.
• Wipe the clock radio with a damp
cloth occasionally to keep it look-
ing new. Do not use harsh chemi-
cals, cleaning solvents, or strong
detergents to clean the clock
radio.
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SPECIFICATIONS
Bands:
AM ............................................................................................... 530–1710 kHz
FM .................................................................................................. 88–108 MHz
Intermediate Frequency:
AM ......................................................................................................... 455 kHz
FM ....................................................................................................... 10.7 MHz
Frequency Coverage:
Channel 1 ...................................................................................... 162.400 MHz
Channel 2 ...................................................................................... 162.425 MHz
Channel 3 ...................................................................................... 162.450 MHz
Channel 4 ...................................................................................... 162.475 MHz
Channel 5 ...................................................................................... 162.500 MHz
Channel 6 ...................................................................................... 162.525 MHz
Channel 7 ...................................................................................... 162.550 MHz
Power Output...............................................................................Maximum 300 mW
Power Supply.............................................................. 120 Volts, 60 Hz, 5 Watts AC
Battery Backup............................................................................. One 9-Volt Battery
Speaker...................................................................... Ferrite, Dynamic-Type, 8 ohm
Speaker Diameter ........................................................................................ 3 Inches
(7.62 cm)
Antenna............................................................................Telescoping Rod and Wire
Dimensions (HWD) ....................................................................21/2 x 9 x 51/2 Inches
(63 x 229 x 140 mm)
Weight...........................................................................................................27.5 oz.
(779 g)
Specifications are typical; individual units might vary. Specifications are subject to
change and improvement without notice.
14
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NOTES
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Limited Ninety-Day Warranty
This product is warranted by RadioShack against manufacturing defects in material and workman-
ship under normal use for ninety (90) days from the date of purchase from RadioShack company-
owned stores and authorized RadioShack franchisees and dealers. In the event of a product defect
during the warranty period, take the product and the RadioShack sales receipt as proof of purchase
date to any RadioShack store. RadioShack 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 purchase price. All replaced parts and prod-
ucts, and products on which a refund is made, become the property of RadioShack. New or recondi-
tioned parts and products may be used in the performance of warranty service. Repaired 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 after 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 instructions, improper installation or
maintenance, alteration, 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.
EXCEPT 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, BUT NOT LIMITED TO, ANY DAMAGES RESULT-
ING FROM INCONVENIENCE, LOSS OF TIME, DATA, PROPERTY, REVENUE, OR PROFIT OR
ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, EVEN IF Ra-
dioShack 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 in-
cidental or consequential damages, so the above limitations or exclusions may not apply to you.
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 Throckmorton St., Suite 600, Fort Worth, TX 76102
We Service What We Sell
1/97
RadioShack
A Division of Tandy Corporation
Fort Worth, Texas 76102
3A7
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