Nist Atomic Clock
nistatomicclock
Radio clocks synchronized to terrestrial time signals can usually achieve an accuracy of around 1 millisecond relative to the frequency standard they broadcast seconds 'pips' to identify the start of second intervals also broadcast time codes as a way of identifying seconds intervals they publish exact geographic references for each antenna, so the radio signal's time-of-flight can be estimated. Radio clock A radio clock is a clock that is synchronized by a time code transmitted by a radio transmitter connected to a time code transmitted by a radio transmitter connected to a time code transmitted by a radio transmitter connected to a time standard such as an atomic clock. Terrestrial time signals Radio clocks synchronized to terrestrial time signals can usually achieve an accuracy of around 1 millisecond relative to the frequency standard they broadcast seconds 'pips' to identify the start of second intervals also broadcast time codes as a way of identifying seconds intervals they publish exact geographic references for radio clocks include: U.S. NIST Broadcasts: The U.S.'s NIST clocks are also available on longwave radio, station WWVB at 60 kHz (binary coded decimal only) at 50 kW, and by shortwave radio stations WWV (a male voice, Fort Collins, Colorado, about 100 km north of Denver at approximately 40°40'49"Nx105°02'27"W ) at
