The WWVB tower icon on the unit’s display will flash indicating a radio signal reception from the WWVB station. If the tower icon is not fully lit, or if the time and date are not set automatically, please consider the following:
•During nighttime hours, atmospheric disturbances are typically less severe and radio signal reception may improve. A single daily reception is sufficient enough to keep the clock accuracy within 1 second.
•Make sure the unit is positioned at 8 feet (2 meters) distance from any interference source such as a TV, computer monitor, microwave, etc.
•Within concrete wall rooms such as basements or office buildings, the received signal may be weakened. Always place the main unit near the window for better reception.
Once the atomic time signal is received, the date and time will be set automatically, and the [
] icon will appear.
Icon
Atomic Time Reception Strength
Undefined data
No Reception for the past 24 hours
Weak signal, but can be decoded
Strong signal
•The atomic clock receiver is programmed that it will search for the atomic time signal daily for 0:00, 3:00, 6:00, and 12:00 am.
•To enable or disable the atomic time receiver, press and hold UP (? ) button for 3 seconds. If atomic time reception is activated, a tower icon will start flashing. If reception is disabled, the tower icon will disappear.
•If the time signal has not been received in 8 minutes, you may set the time manually.
MANUAL SETTINGS
To select the time mode, press UP (? ) or DOWN (? ) until the IN icon 
flashing with a beep sound alert. It is necessary to set the desired US TIME ZONE.
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