Radio Shack 63-1420 User's Manual

Radio Shack Clock User's Manual - 63-1420.
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Please read this user’s guide before 

installing, setting up and using your new product

www.radioshack.com

Thank you for purchasing your Worldwide Atomic Clock 
from RadioShack. It receives signals from atomic clock 
generators so you will always know the exact time. Your 
clock automatically updates to the current local time 
when you travel, and you can set it to automatically 
update for Daylight Savings Time. The clock’s display 
shows your home time, the local time (wherever you are 
currently located), time zone, temperature, and day of 
the week.

Depending on your location, you may or may not 
receive an atomic clock signal. If you install batteries 
and the signal strength indicator (

Ê) does not appear, 

you are in an area that does not receive a signal 
from an atomic clock. See “in regions not receiving 
an atomic clock signal”

in regions receiving an atomic clock signal 

The sequence for setting your clock in a region 
receiving an atomic clock signal generator is:

1) automatic signal detection
2) select a city or time zone
3) set the home time

automatic signal detection
1. After batteries are installed, the clock starts 

searching for an atomic clock signal and Ê 
flashes.

2. In about 10 minutes, one of the following 

abbreviations appears momentarily to indicate 
the atomic clock from which you are receiving a 
signal:

Region

Abbreviation

USA

US

UK

UK

North Japan

JP

Europe

EU

South Japan

JP

3. The local time, date, month and year are 

automatically set and briefly appear on the 
display.

Notes: 

• During automatic signal detection, you cannot manually 

set the time. To override signal detection and manually 
set the time, hold down MODEON/OFF and SNOOZE until Ê 
stops flashing. 

• For best reception, keep the clock away from equipment 

that emits RF or microwave signals, such as TVs, radios, 
or microwaves. 

• You may need to position your clock near a window for 

best reception. 

• The most dependable and clear signal is received at 

night, between midnight and 4am local time.

• The clock receives an atomic signal update every 24 

hours and will update accordingly for your location.

select a city or time zone 

There are 32 cities and four US time zones stored 
in your clock. Each city is represented by an 
abbreviated name, and it’s GMT (Greenwich Mean 
Time). GMT refers to that city or region’s time 
relative to the International Date Line. For example, 
Honolulu is ten hours behind (-10), and Tokyo is nine 
hours ahead (+9) of the International Date Line.

1.  Press MODE three times. An abbreviation flashes. 
2.  Press UP to scroll until you see your home city. If 

your home city is not listed, select the city listed 
that is in your time zone. 

Abbrev

GMT

City

Abbrev

GMT

City

HNL

-10

Honolulu

LON

0

London

THR

+3.5

Tehran

HKG

+8

Hong Kong

ANC

-9

Anchorage

PAR

+1

Paris

DXB

+4

Dubai

PEK

+8

Beijing

PST

-8

Pacific (USA)

AMS

+1

Amsterdam

KBL

+4.5

Kabul

TPE

+8

Taipei

MST

-7

Mountain 

(US)

FRA

+1

Frankfurt

KHL

+5

Karachi

TYO

+9

Tokyo

CST

-6

Central (USA)

CAI

+2

Cairo

DEL

+5.5

New Delhi

ADL

+9.5

Adelaide

EST

-5

Eastern 

(USA)

JRS

+2

Jerusalem

DAC

+6

Dhaka

SYD

+10

Sydney

CCS

-4

Caracas

JED

+3

Jeddah

RGN

+6.5

Yangon

NOU

+11

Noumea

RIO

-3

Rio de 

Janeiro

MCW

+3

Moscow

BKK

+7

Bangkok

WLG

+12

Wellington

3.  Press SET to confirm. The time, day, month, date 

and year are automatically set.

set the home time 
1.  Press MODE four times. The time zone (GMT) digits 

flash.

2.  Press UP to scroll until your home time zone 

(GMT) digits appear. For example, if you are from 
Texas, which is on CST, you will scroll until -6 
appears.

3.  Press SET to confirm.

in regions not receiving an atomic clock signal 

If your clock starts searching for a signal, you can 
disable it by holding down ON/OFFSNOOZE, and MODE 
until Ê stops flashing.The sequence for setting your 
clock in regions not receiving an atomic clock signal 
is:

1) select a city or time zone
2) manually set the current time
3) set the home time

select a city or time zone 
Follow steps 1-3 as if you were in an area receiving 
an atomic clock signal.

manually set the current time

1.  Hold down MODE until the hour digits flash.
2.  Press UP to scroll through the hours.
3.  Press SET to confirm the correct hour. The 

minute digits flash.

4.  Press UP to scroll through the minutes.
5.  Press SET to confirm the correct minutes. The 

second digits flash.

6.  Press UP to reset the seconds to zero (00).
7.  Press SET to confirm the seconds.
8.  Press UP to toggle between 12 or 24 hour time 

format.

9.  Press SET to confirm the time format.
10. Press MODE once to view the day, month, year 

and date information. 

11. Hold down MODE until the year digits flash.
12. Press UP to scroll through the years.
13. Press SET to confirm the year. The month digits 

flash.

14. Press UP to scroll through the months.
15. Press SET to confirm the month. The date digits 

flash.

16. Press UP to scroll through the dates.
17. Press SET to confirm the date.

Daylight Saving Time (DST)

1.  When in time mode, press MODE three times.
2.  Press ON/OFF to enable or disable DST. Your 

clock will automatically adjust to DST on the 
appropriate date.

set the home time 

Follow steps 1-3 as if you were in an area receiving 
an atomic clock signal.

setting the clock

Your clock requires two AAA batteries (not supplied) 
for power.

1. Remove the battery 

compartment cover.

2. Insert two AAA 

batteries.

3. Replace the cover.

Battery Notes:

•  Dispose of old batteries 

promptly and properly. 

•  Do not burn or bury batteries.
•  Use only fresh batteries of the required size and 

recommended type.

•  Do not mix old and new batteries, or batteries with 

different capacities or different chemistries.

•  If you do not plan to use the clock for a month or more, 

remove the batteries. Batteries can leak chemicals that 

can damage electronic parts.

installing batteries

63-1420

Worldwide Atomic Clock

clock              user’s guide

what’s included

Note: Actual product may vary from the images found in this 
document.

snooze

time zone

MODE

ON/OFF

SET

UP

home time

local time

temperature / 
humidity

0.587594s