Radio Shack 63-1416 User Manual
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©
2002 RadioShack Corporation.
All Rights Reserved.
RadioShack and RadioShack.com are trademarks
used by RadioShack Corporation.
OWNER’S MANUAL — 
Please read before using this equipment.
www.radioshack.com
™
63-1416
Thank you for purchasing a RadioShack 1.8 Inch Big Digit Atomic Clock. Your clock tells Atomic 
time, so it sets itself automatically when it receives the WWVB signal transmitted by NIST in 
Fort Collins, Colorado. It has a bold, easy to read display with a Hi-Lo dimmer that allows you to 
adjust the brightness for greater readability. With four time zones selection, you can set the 
clock to the correct time by just sliding a switch!
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To power the alarm clock, plug the clock's 
power cord and transformer into any 
standard AC outlet. 
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appears and
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H
H
H
flashes. The clock searches for the WWVB 
signal. 
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You can install a backup battery so you do 
not lose your clock settings if there is a power 
failure. The display turns off during a power 
failure, but, for 24 hours, the clock continues 
to run and the alarms sound at the preset 
alarm times.
Your clock requires one 9V battery (not 
supplied) for backup power. For the best 
performance and longest life, we recommend 
RadioShack alkaline batteries. 
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1. Slide the battery compartment cover in
the direction of the arrow to remove it.
2. Place the battery in the compartment as
indicated by the polarity symbols 
(+ and –) marked inside.
3. Replace the cover.
When LO BAT lights, the backup battery is 
low. Replace the battery. 
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Slide
Time Zone
, located on the back of the
clock to select the desired time zone.
If the clock does not receive the signal in the 
first 20 minutes, set it manually. The clock 
adjusts itself automatically to the exact time 
within 48 hours. 
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Set
DST
, located on the back of the clock, to
ON
unless the clock is used in an area
without Daylight Savings Time (DST). Set
DST
to
OFF
if the clock is used in an area
without DST.
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1. To set the hour, press and hold
TIME SET
and then press (or press and hold)
Hour/
WAVE
until the desired hour appears.
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2. To set the minute, press and hold
TIME
SET
and repeatedly press (or press and
Four Time Zones — 
slide the time zone 
switch to select 
Pacific Standard 
Times (PST), 
Mountain Standard 
Time (MST), Central 
Standard Time (CST), 
or Eastern Standard 
Time (EST).
Daylight 
Saving Time 
(DST) — 
adjusts to 
Daylight 
Saving Time 
automatically 
when it 
receives the 
WWVB signal.
Backup Battery — 
powers the clock 
during a power failure
Daily Dual Alarm — 
two separate alarms 
with different sounds.
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Dispose of batteries promptly and properly. Do 
not burn or bury them.
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Use only a fresh battery of the required size 
and recommended type.
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If you do not plan to use the clock with 
batteries for a week or more, remove the 
batteries. Batteries can leak chemicals that 
destroy electronic parts.
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Installing the Backup Battery
To prevent unnecessary drain on the battery, 
make sure you connect the alarm to an AC 
power outlet before you install the battery. 
Setting the Time Zone
Parts of Arizona and Indiana do not participate in 
Daylight Savings Time.
Setting the Time
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The defaulted clock setting is 12:00 a.m.
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PM lights if it is a p.m. hour.
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If an icon appears at the end of a paragraph, go to the box on that page with the corresponding icon for 
pertinent information.
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— Warning
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— Important
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— Note
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— Caution
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— Hint
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WARNING:
To reduce the risk of fire or
shock hazard, do not expose this product to rain 
or moisture.
CAUTION
RISK OF ELECTRIC
SHOCK. DO NOT OPEN.
CAUTION:
TO REDUCE THE RISK OF
ELECTRIC SHOCK, DO NOT REMOVE 
COVER OR BACK. NO USER-SERVICEABLE 
PARTS INSIDE. REFER SERVICING TO 
QUALIFIED PERSONNEL.
This symbol is intended to alert 
you to the presence of 
uninsulated dangerous voltage 
within the product’s enclosure that 
might be of sufficient magnitude 
to constitute a risk of electric 
shock. Do not open the product’s 
case.
This symbol is intended to inform 
you that important operating and 
maintenance instructions are 
included in the literature 
accompanying this product.
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