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WWVB Atomic Time
The NIST radio station, WWVB, is located near Fort Collins, Colorado, and transmits the
exact time signal continuously throughout North America at 60 kHz. The signal has
a range of up to 2,000 miles. However, due to the nature of the Earth’s Ionosphere,
reception is very limited during daylight hours. The atomic clock will search for a signal
every night when reception is best.
The clock receives the time signal via its built-in
antenna and adjusts automatically to the selected
time zone. Once the correct time is set, the clock
continues running with an internal quartz-controlled
mechanism.
The internal quartz mechanism is very accurate;
therefore, it does not matter if the clock is occasionally
unable to receive the time signals.
Environmental Reception Effects
Your atomic clock obtains the accurate time with wireless technology. Same as all
wireless devices, the receiving ability may be affected by, but not limited to, the
following circumstances:
• Long transmitting distance.
• Close proximity of mountains and valleys.
• Close proximity of tall buildings.
• Close proximity of railways, high voltage cables, etc.
• Close proximity of freeways, airports, etc.
• Close proximity of construction sites.
• Inside concrete buildings.
• Close proximity of electrical appliances.
• Near computers and television sets.
• Inside moving vehicles.
• Close proximity of metal structures.
Environmental Protection: Disposal of Electrical & Electronic Equipment
Do not dispose of this product with household waste. For the proper treatment,
recovery and recycling please take this product to the appropriate collection point. If
you are unsure of where this is, please contact your local authority. Improper disposal
may be harmful to the environment.
FCC Disclaimer
This device complies with part 15 of the FCC rules. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.
