Radio controlled clocks receive
wireless time codes and synchronize to the Coordinated Universal
Time (UTC) within a fraction of a second. This technology has
been extended to a wide variety of desk clocks,
wall
clocks and wrist watches that synchronize to radio stations
such as WWVB, NIST and similar stations in other countries.
The guaranteed precision in time is the distinguishing
feature of a radio controlled clock, and is
also the reason why a radio controlled clock
commands an edge over the conventional clock.
Though radio controlled clocks have been present
ever since the existence of radio, the technology
was much expensive then. Advancement in technology
and low costs of production has made the purchase
of a radio controlled clock an affordable
one.
Though some believe that the radio controlled
clock and an atomic clock are one and the
same, here is the reason why the two are different: