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Thank you for purchasing your Atomic Alarm
Clock from RadioShack. Please read this user’s
guide before installing, setting up, and using
your new clock.
Features
• Radio controlled clock receives signal from
WWVB 60kHz and adjusts time and date
automatically.
• LED backlight.
• 4 time zone settings.
• Daylight saving time.
• Alarm and snooze function.
• Indoor temperature with Celsius or
Fahrenheit option.
Check package contents
• Atomic Clock • Quick Start
• User’s Guide
1 Select a Location
• Place your clock near a window.
• Do not place in direct sunlight, next to
heat or cold sources such as stoves and
freezers, or heating vents.
• Keep the clock away from high power
cables, TVs, microwaves, refrigerators,
computers, and metal furniture.
• Your atomic clock will not work in Alaska or
Hawaii.
2 Install Batteries
1. Press the tab to
remove the battery
compartment cover.
2. Insert two AA
batteries (not
included) matching
the polarity
symbols (+ and –)
marked inside.
3. Replace the cover.
Replace batteries when the display dims.
Battery Notes
• Dispose of batteries promptly and properly.
Do not burn or bury them.
• Use only fresh batteries of the required size
and type.
• Do not mix old and new batteries, different
types of batteries (alkaline, or rechargeable), or
rechargeable batteries of different capacities.
• If you do not plan to use the atomic clock,
remove the batteries. Batteries can leak
chemicals that can damage electronic parts.
3 Set Time and Date
Automatic Settings
1. After batteries are installed, the clock
starts searching for the WWVB signal from
the atomic clock in Fort Collins, Colorado.
2. One of the signal reception indicators
flashes during signal search.
Weakest Weaker Weak Normal Strongest
3. If reception succeeds, date and time are
updated automatically, and
displays
until the next reception cycle.
If the reception fails, no signal indicator
appears. Hold down
)/WAVE for 3 seconds
to receive signal manually. If it still fails, follow
“Manual Settings” on page 8 to set the date and
time.
The clock automatically updates the atomic
time daily at 3:00 a.m., 4:00 a.m., 5:00 a.m., or
Atomic Alarm Clock
User’s Guide 63-246
)/WAVE
• Increase settings in the time and alarm modes.
• In the normal time display, press for 3 seconds
to activate the manual signal search. Press
again to turn it off.
SNOOZE/LIGHT
• Press to turn on the
backlight for 5 seconds.
• When the alarm sounds,
press once to stop the
alarm for 5 minutes.
ALM/SET
Set alarm or switch
between viewing the
month/date and alarm
time.
ALARM ON/OFF
Turn alarm on or off.
TIME/SET
Set time, year, month,
date, and temperature
reading.
(/ZONE
• Decrease settings in
the time and alarm
modes.
• Select the desired
time zone.
6:00 a.m. It stops the update once the time is
updated for the day.
n Notes:
• The radio signal search takes
approximately 10 minutes after batteries
are installed or when RESET is pressed.
If you want to set the time and date
manually, press )/WAVE to stop signal
search at any time.
• The clock automatically adjusts the
daylight saving time (DST) upon receipt
of a signal, and displays. If you are
in an area that does not recognize DST,
change the time zone on your clock until
it matches the correct hour.
• During the radio signal search, all function
keys stop working except SNOOZE/LIGHT.
• Signal reception might be affected if your
clock is placed in a basement or anywhere
near large metal structures (tall buildings,
freeways, airports, or railways).
• On very cloudy and stormy days, the radio
signal might not be strong enough to set
the clock.
Clock Time
12 or 24 hour format.
Day of the Week
Month and Day or
Alarm Time
Temperature
˚C or ˚F
Time Zone
Signal Reception Indicator
Alarm On
Snooze On
Daylight Saving Indicator
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