An atomic clock contains a small antenna and radio receiver that's set to pick up the long wave (60 kHz) signal of WWVB, NIST's radio transmitter. WWVB broadcasts nonstop, covers most of the continental United States and may even be picked up by a

The Sharp SPC900 clock has a radio-controlled function that automatically synchronizes the time from an atomic clock in Fort Collins, Colorado. However, if it is not possible to synchronize with the atomic clock, the time can also be set manually using th

Your Sharp atomic clock will receive automatic updates twice a day at 2 a.m. and 5 p.m. These updates will also tell your Sharp atomic clock when it is time to change from standard time to daylight savings time and back. Repeat this set-up procedure each