La Crosse 3128 Instruction Manual

1

RADIO CONTROLLED ANALOG CLOCK

INSTRUCTION MANUAL 

Quick Setup Instructions 

Welcome to the world of atomic timekeeping technology. We hope you will enjoy 

the convenience of never having to set your clock again and the confidence of 

knowing exactly what time it is.  

• 

Insert 1 new AA, LR6 1.5 volt ALKALINE battery into the digital clock battery 

compartment (the lower battery compartment) according to the polarity 

marked on the case, then 1 new battery AA, LR6 1.5 V into the analog clock 

battery compartment according to the polarity marked on the case.  

• 

Once the battery is installed, the clock will begin searching for a signal.  For 

the initial setting, it is recommended to stand the clock in an upright position 

near a window.  Within five minutes the clock will either receive the WWVB 

signal and set itself to the exact time (for the default Pacific Time Zone), or it 

will determine that the signal is not receivable at its current location and time 

of day.  The clock will fast-forward the hands to the 4, 8, or 12 o’clock 

position immediately and search for WWVB at specific time each day until a 

signal is received.   

Note: If the time is manually set, the clock will continue to periodically 

search for a signal and automatically reset the hands when the signal is 

received. 

• 

Once the clock has received the WWVB signal, press the time zone button 

to select your time zone. If you are in the Pacific Time Zone, no change is 

needed and you are ready to hang your clock. 

If you are not in the Pacific Time Zone, select your time zone by pressing 

one of the four time zone buttons PT-Pacific Time, MT-Mountain Time, CT-

Central Time, ET-Eastern Time and holding this button down for 5 seconds.  

If multiple buttons are pressed, the clock will set to the time zone selected 

last.  If no time zone is selected the clock will default to Pacific Time.  If you 

live in an area that does not recognize DST (Arizona) you must press the 

DST button (unmarked – just above and between the Central and Eastern 

time zone buttons) for one second to deactivate your clock’s DST program. 

For time zones outside of PT, MT, CT or ET you must manually set the time 

using the Manual Time set button on the back of the movement. (See 

instructions below).  

Please Note: WWVB time will over ride a manual setting. 

BATTERY

COMPARTMENT

FOR THE

DIGITAL CLOCK

BATTERY 

COMPARTMENT 

FOR THE 

ANALOG CLOCK