Optimus 12-1610, CR-307 User Manual

12-161 0.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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FEATURES

Your Optimus CR-307 AM/FM•Weath­er Clock Radio has all the features of
an alarm clock and a quality AM/FM
radio. It is also designed to receive
National Weather Service broad­casts, which provide information about
weather conditions and forecasts 24
hours a day.

Its features include:

Push Button Operation

— makes

the clock easy to use.

Sleep Timer

— plays the radio for up
to 2 hours before it automatically turns
off, so you can listen as you fall
asleep.

Snooze

— temporarily turns off the
alarm for about 9 minutes, so you can
get a few extra minutes of sleep.

Red LED Displa
Control

— makes the clock easy to

with Brightness

read.

Built-In Speaker

— lets you listen to

the radio without using headphones.



Batter

Sentinel

— shows when you
need to install or replace the backup
battery.

Weather Alert

— sounds a built-in si­ren when it detects a weather alert
broadcast.

Optional Siren Lock

— allows you t o
set the alert siren to continue sound­ing until you turn it off.

Siren Tes t Button

— lets you check
the alert siren circuitry and hea r what
the siren sounds like.

Two Ante nna s

— give you the option
of using the line cord or the telescop­ing rod antenna for the best weather
station reception.

Seven Weathe r Channels

— let you
choose the frequency that gives you
the best reception for regional weather
information.

PLL S

nthesized Tunin

— ensures

tuning accuracy.

Batter

Backup

— automatically
switches to internal battery power if
AC power is interrupted , and operates
the clock and alarm.

© 1997 Tandy Corporation.

Battery Sentinel and Optimus are registered trademarks used by Tandy Corporation.

RadioShack is a trademark used by Tandy Corporation.

All Rights Reserv ed .

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CONTENTS

Preparation ........................................................................................................... 4

Connecting Power ........................................................................................... 4

Installing the Backup Battery .......................................................................... 4

Setting the Time .............................................................................................. 5

Headphones .............................................................................................. 6

Usin

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

Receivin

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

Warnin

: To prevent fire or s hock
hazard, do not expose this product
to rain or moisture.

CAUTION

RISK OF ELECTRIC SHOCK.

DO NOT OPEN.

CAUTION

ELECTRIC SHOCK, DO NOT REMOVE
COVER OR BACK. NO USER-S ERVICE­ABLE PARTS INSIDE. REFER SERVIC­ING TO QUALIFIED PERSONNEL.

: TO REDUCE THE RISK OF

!

The graphical symbols with supple-

This symbol is intended to alert you
to the presence of uninsulated dan­gerous voltage wi thin the prod uct’s
enclosure that might be of sufficient
magnitude to constitute a risk of
elect ric sho ck. D o not op en th e pr od­uct’s case.

This symbol is intended to inform
you that important operating and

!

maintenance instructions ar e includ­ed in the literature accompanying
this product.

mental markings are on t he bottom of
the clock radio.

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PREPARATION

CONNECTING POWER

Plug the clock radio’s power cord i nto
a standard AC outlet. The display
flashes.

Illust.

INSTALLING THE
BACKUP BATTER Y

To keep the clock running during an
AC power failure, install a 9-volt bat­tery. For the best performance, we
recommend an alkaline battery such
as RadioShack Cat. No. 23-553.

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:

— If you set

AM

clock alarm will still sound at the
preset alarm time for up to 8
hours.

— If you set

ALERT

clock alarm will still sound at the
preset alarm time, but only for up
to 3 hours.

FM/AM/WX/ALERT

, or WX, the clock runs and the

FM/AM/WX/ALERT

, the clock runs and the

to FM,

to

Notes:

• To prevent unnecessary drain on
the backup battery, install the bat­tery after you plug in the AC
power cord.

• The BATTERY SENTINEL indica­tor lights when the battery is weak
or missing. Replace the battery
when the indicator lights or at
least every 6 months.

• 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.

• 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 “Test­ing Alert Reception” on Page 11),
and replace the battery i f the tone
does not sound.

Cautions:

• Remove the bat tery if you do not
plan to use the clock radio for a
week or more. Bat teries can leak
chemicals and damage the radio.

• Use only a fresh battery of the
required size and type. Do not use
a rechargeable battery in your
radio.

4

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Follow these steps to install the back­up battery.

1. Press the tab a nd lift off the bat­tery compartment cover.

Illust.

2. Snap the battery o nto the battery
connector and place the battery in
the compartment.

Illust.

SETTING THE TIME

1. While you press and hold
press
advance by 1 each time you press

HOUR
HOUR

digits.

Note:

in the upper left corner of the dis­play for a PM hour.

2. While you press and hold
press
advance by 1 each time you press

MINUTE
MINUTE

minute digits.

HOUR

. The hour digits

. You can press and hold
to rapidly advance the hour

The PM indicator appears

MINUTE

. The minute digits

. You can press and hold
to rapidly advance the

TIME

TIME

,

,

3. Replace the cover.

4. Press

SNOOZE

to turn off the BAT-

TERY SENT IN EL ind ica to r.

You can press a nd hold

Note:

ALARM

and

together to display the

SLEEP

seconds and one digit of the minutes.

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USING HEADPHONES

For private listening, you need a pair of
headphones (not supplied) with a
inch (3.5 mm) plug. Your local Ra­dioShack store has a wide selection of
headphones.

Plug the headphones into the

PHONE

radio.

Note:

phones, the internal speaker is auto­matically disconnected.

jack on the back of the clock

Illust.

When you connect head-

1

/8-

EAR-

LISTENING SAFELY

To protect your hearing, follow these
guidelines when you use headphones.

• Set the volume to the lowest set­ting before you begin listening.
After you begin listening, adjust
the volume to a comfortable level.

• Do not listen at extremely high
volume levels. Extended high vol­ume listening can lead to perma­nent hearing loss.

• 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.

6

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CLOCK RADIO OPERATION

CHANGING THE
DISPLAY BRIGHTNESS

You can change the display bright­ness by setting

LOW

.

DIMMER

Illust.

to

HIGH

or

PLAYING THE RADIO

Follow these steps to listen to AM or
FM radio broadcasts.

To listen to National Weather

Note:

Service broadcasts, see “Weather Ra­dio Operation” on Page 10.

1. Rotate
volume to its minimum level.

VOLUME

to set the radio’s

3. Set

4. Rotate

5. Adjust

FM/AM/WX/ALERT

AM

.

tion.

sound level.

TUNING

VOLUME

to FM or

to the desired sta-

to the desired

2. Set

FUNCTION

Illust.

to ON.

6. To turn off the radio, set

TION

Notes:

• For the best AM reception, rotate
the clock radio (the AM antenna is
built-in).

• For the best FM reception, fully
extend the po wer cord (the p ower
cord is also the FM antenna).

to

OFF

.

FUNC-

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USING THE ALARM

You can set an alarm so the buzzer
sounds or the radio plays at a speci­fied time. Follow these steps to set the
alarm time.

1. Set

FUNCTION

2. While you press a nd hold
press

HOUR

advance by 1 each time you press

HOUR

. You can press and hold

HOUR

to rapidly advance the hour

digits.

Note:

The PM indicator appears
in the upper left corner of the dis­play for PM hours.

OFF

to

.

ALARM

. The hour digits

Illust.

ALARM

•

— To s ound the buzzer

at the preset alarm time.

AUTO

•

— To turn on the radio at

the preset alarm time. If you set

FUNCTION
VOLUME

for the desired radio

to

AUTO,

adjust

sound level.

,

5. At the preset alarm time, the
buzzer sounds or the radio plays.
To silence the buzzer or radio, set

FUNCTION

to

OFF

or press

ALARM

once. If you do not manu ally turn
off the buzzer or radio, it contin­ues to sound for about 2 hours,
then sounds again the next day.

Notes:

• The ALARM indicator lights in t he
lower left corner of the display
when the buzzer or radio is set to
sound.

•Press

ALARM

to view the preset

alarm time at any time.

3. While you press a nd hold

MINUTE

press

. The minute digits

advance by 1 each time you press

MINUTE
MINUTE

. You can press and hold
to rapidly advance the

minute digits.

Illust.

4. Set

FUNCTION

to one of the fol-

lowing:

8

ALARM

,

USING SNOOZE

To temporarily silence the buzzer or

OFF

SNOOZE

.

. The alarm auto-

radio, press
matically sounds again after about 9
minutes.

You can repeat this for at least 2
hours. To turn off the alarm, set

TION

to

FUNC-

Illust.

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USING THE SLEEP
TIMER

The sleep timer lets you set the radio
to play for up to 2 hours then automat­ically turn off, so you can have the ra­dio play as you go to sleep.

To use the sleep timer, first make sure
the radio is off by setting

OFF

.

Follow these guidelines to set the
sleep timer to the desired time.

Illust.

• To play the radio for 1 hour, press

SLEEP

once.

• To play the radio for less than 1
hour:

FUNCTION

to

• To play the radio for the maximum
of 2 hours:

— Press and hold

clock radio displays

— While you hold

HOUR

once. The time increas-

SLEEP

0:59

SLEEP

. The

.

, press

es to 1 hour, 59 minutes.

Note:

The radio turns off after 1
hour, 59 minutes, 59 seconds (2
hours). Y ou cannot adjust the sec­onds.

• To play the radio for more than 1
hour, but less than 2 hours:

— Press and hold

clock radio displays

— While you hold

HOUR

once. The time increas-

SLEEP

0:59

SLEEP

. The

.

, press

es to 1 hour, 59 minutes.

— While you continue to hold

SLEEP

, press

MINUTE

. The
minutes decrease by 1 each
time you press

MINUTE

to rapidly decrease the

MINUTE

. Hold

play time.

— Press and hold

clock radio displays

— While you hold

MINUTE

. The minutes decrease

SLEEP

0:59

SLEEP

by 1 each time you press

MINUTE

. Hold

MINUTE

to rapid-

ly decrease the play time.

. The

.

, press

To turn off the radio before i t a utomat ­ically turns off, press

SNOOZE

.

9

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RECEIVING WEATHER BROADCASTS

WEATHER RADIO
OPERATION

Follow these steps to receive National
Weather Service broadcasts.

1. To turn on the radio, set

TION

to ON.

Illust.

2. Set

FM/AM/WX/ALERT

Illust.

3. Adjust

VOLUME

to a comfortable

listening level.

4. Set

CHANNEL

to the channel (

that produces the clearest signal.

FUNC-

to WX.

1–7

5. Set

Note:

noisy, set

WX ANTENNA

If the signal is broken or

WX ANTENNA

to

LINE

.

to

ROD

.
Then extend the telescoping
antenna to its full length. If recep­tion is still not clear, try placing the
radio near an outside wall or win­dow.

6. To turn off the radio, set
to

OFF

.

TION

FUNC-

USING THE ALERT TONE

You can set t he rad io to alert you only
when it detects a weather emergency
broadcast so you do not have to con-

)

tinuously listen to the National Weath­er Service broadcasts.

10

Illust.

1. Set

WX/ALERT

FUNCTION

to

to ON and

ALERT

FM/AM/

to set the
radio to the alert mode. The
ALERT indicator lights, and the
receiver is silent.

12-161 0.fm Page 11 Fr iday, July 9, 1999 10:10 AM

2. Set

ALERT LOCK

as follows:

Illust.

ON

— When the radio receives

•
an alert signal, the siren sounds
continuously until you change

FM/AM/WX/ALERT

the

LOCK

setting.

OFF

— When the radio receives

•

or

ALERT

an alert signal, the siren sounds
only during the 10-second alert
signal.

3. To silence the siren, set

WX/ALERT

to WX. You hear the

FM/AM/

current weather broadcast.

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

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 inform a­tion.

• The radio sounds the alert siren at
full power, regardless of the
radio’s volume setting.

, the

TESTING ALERT
OPERATION

For your radio to be effective, you
must place the radio:

• Where it can receive an emer­gency alert signal (see “Testing
Alert Reception”)

• Where you can h ear its alert tone
(see “Using the ALERT TEST But­ton”)

Once you determine a location that
meets these two conditions, leave t he
radio there for the best protection.

Testing Alert Reception

The fact that you get clear voice re­ception or that the tone sounds when
you set
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 trig­ger your radio while it is in one place,
but not in another place (even close
by).

To test for actual reception, your radi o
must receive a test or emergency alert
signal. The National Weat her Service
(NWS) broadcasts a test alert every
week on Wednesday bet ween 11 AM
and 12 Noon.

ALERT TEST

to ON (see “Us-

11

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12-161 0.fm Page 12 Fr iday, July 9, 1999 10:10 AM

To find out the specific test schedule
in your area, contact your local Na­tional Oceanic and Atmospheric Ad­ministration (NOAA) or National
Weather Service office. These offices
are usually listed in the telephone
book under “US Government.”

To verify that your radio receives the
test alert properly, set

ON

during the time when the t est tone

ALERT LOCK

to
is broadcast in your local area.
If the test alert signa l does not trigger

your radio’s tone, you are e ither out of
range of the signal or AC power is dis­connected and your radio’s backup
battery is weak.

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.

Using the ALERT TEST
Button

ALERT TEST

The
the alert tone the radio produces but
does not test the radio’s receiver or in­dicate that your radio will receive an
emergency alert.

1. Set

2. Set

FUNCTION

AM/WX/ALERT

ALERT TEST

tone sounds, walk away from the
radio to determine how far away
from it you can get and still hear
the tone.

Notes:

ALE RT LO C K

•If
tone sounds until you set

AM/WX/ALERT
FM

.

button lets you hear

to ON and set

ALERT

to

.

FM/

to ON. While the

is set to ON, the

FM/

to WX, AM, or

12

ALERT LOCK

•If

is set to

the tone sounds only while

ALERT TEST

is set to ON.

3. To stop the alert sound, set
to

OFF

.

TEST

OFF

ALERT

,

12-161 0.fm Page 13 Fr iday, July 9, 1999 10:10 AM

CARE AND MAINTENANCE

Your Optimus CR-307 AM/FM•Weath­er Clock Radio is an example of supe­rior 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. Liq­uids might contain minerals that
can corrode the electronic circuits.

• Use and store the clock radio only
in normal temperature environ­ments. Temperature extremes can
shorten the life of electronic
devices and distort or melt plastic
parts.

• Keep the clock radio away from
dust and dirt, which can cause
premature wear of parts.

• Handle the clock radio g ently and
carefully. Dropping it can damage
circuit boards and the case and
can cause the clock radio to work
improperly.

• Use only a fresh battery of the
required size and type. Old batter­ies can leak chemicals that dam­age your clock radio’s electronic
parts.

Modifying or tampering with the clock
radio’s internal components can
cause a malfunction and might invali­date your clock radio’s warranty and
void your FCC authorization to oper­ate it. If your clock radio is not per­forming as it should, take it to your
local RadioShack store for assistance.

THE FCC WANTS YOU
TO KNOW

Your clock radio might cause TV or ra­dio interference even when it is oper­ating properly. To determine whether
your clock radio is causing the inter­ference, turn off your clock radio. If the
interference goes away, your clock ra­dio is causi ng it. Try to eliminate the
interference by:

• Moving your clock radio away
from the receiver

• Contacting your loca l RadioShack
store for help

If you cannot eliminate the interfer­ence, the FCC requires that you stop
using your clock radio.

• Wipe the clock radio with a damp
cloth occasionally to keep it look­ing new. Do not use harsh chemi­cals, cleaning solvents, or strong
detergents to clean the clock
radio.

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12-161 0.fm Page 14 Fr iday, July 9, 1999 10:10 AM

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

1

Dimensions (HWD)....................................................................2

/2 x 9 x 51/2 Inches

(63 x 229 x 140 mm)

Weight..................... ........................ ....................... ................. ......................27.5 oz.

(779 g)

Specifications are typical; individual units m ight vary. Specifications are subj ect to
change and improvement without notice.

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12-161 0.fm Page 15 Fr iday, July 9, 1999 10:10 AM

NOTES

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Limited Ninety-Day Warranty

This product is warrant ed by RadioShac k against man ufacturing d efects in materia l and workman­ship under normal use for ninety (90) day s from the date of purc hase from Rad ioShack comp any­owned stores and autho rized R adioShac k franchi see s and de alers. In the ev ent of a pr oduct defe ct
during the warranty period, take the product and the RadioShack sales receipt as proof of purchase
date to any RadioShack store. R adioShack 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 prod­ucts, and products 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. Repaired or replaced
parts and produc ts are warranted for th e 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, impr oper or abnormal usa ge, failure to fol low i nstruct ions, improper instal lation or
maintenance, alterati on, lightning or other incidence of exc ess voltage or current; (b) any repairs
other than those provi ded by a RadioShack Autho rized Service Facility; ( c) consumables such as
fuses or batteries; (d ) cosmeti c dam age; (e) transp ortatio n, sh ipping or insuranc e c osts; or (f) cos ts
of product removal, installation, set-up service adjustment or reinstallation.
EXCEPT AS PROVIDED HEREIN, RadioShack MAKES NO EXPRESS WARRANTIES AND A NY
IMPLIED WARRANTIES, INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO THE DURATIO N 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 RESULT­ING FROM INCONVENIENCE, LOSS OF TIME, DATA, PROPERTY, REV ENUE, 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 limitations on how long an implied warranty lasts or the exclusion of in­cidental or consequentia l damages, so the above limitations or exc lusions may not apply to you.
This warranty gives you specifi c legal rights, and you may also have oth er 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 Printed in Hong Kong