Model: WT-3143A www.lacrossetechnology.com/support Page | 1
Model: WT-3143A
Instruction Manual
DC: 031716
14” Atomic Wall Clock
Get Started
1: Slide the switch to select a time zone and DST ON or OFF.
2: Insert 1 fresh AA, LR6 1.5 volt ALKALINE battery according to the polarity
marked on the case.
OPTIONAL: To extend battery life (over 3 years), insert two batteries in the
compartment below the movement.
3: For the best reception, please place clock on a wall that faces Ft. Collins,
Colorado. During the night, your clock will automatically set itself.
Note: The hands will move to the 12:00 position and search for the radio signal.
If the radio signal is not received in the first 10 minutes, the clock will start
running from the 12:00 position and will continue to run. Do not attempt to
reset the hands manually even though the time on the clock is incorrect. The
clock is synchronizing to the WWVB signal and once the radio signal is decoded,
the hands will automatically adjust to the correct time. This may take up to 5
nights if there is atmospheric interference.
Position Clock
• Signal reception is at its peak when there is only one wall or window
between the clock and the outside.
• The antenna is best positioned for signal reception when the front or back of
the clock faces Colorado.
• Choose a location 6 feet or more from electronics such as cordless phones,
wireless gaming systems, televisions, microwaves, routers, baby monitors,
etc., which can prevent signal reception.
• Large office buildings, schools, or hospitals may not receive the WWVB time
signal in every room.
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