How a Radio-Controlled Clock Works£¿

À¸Ä¿£º News date£º2023-12-16

In the realm of timekeeping, Radio-Controlled Clocks (RCC) stands distinct from the quartz clocks. Even the most expensive quartz clocks may deviate by at least one second each day. Over time, this discrepancy accumulates, resulting in a one-minute error within two months and a six-minute error in a year.

Unlike ordinary quartz clocks, Radio-Controlled Clocks have two extra components: an antenna that picks up radio signals and a circuit that decodes them. This circuit uses the radio signals to figure out the accurate time, subsequently adjusting the displayed time on the clock or watch.


For an RCC to keep the correct time, it requires not only a method of receiving the time but also a source for that time. These radio signals originate from different radio stations in different countries. In the United States, the signals are broadcasted by the WWVB station, while in the UK, it's the MSF station. In China, it's broadcasted by the National Time Service Center, known as BPC. These stations repeatedly broadcast time in the form of special codes understandable only by radio-controlled clocks. Once these signals reach the radios inside the clocks, they decode the digits to obtain the correct time. Subsequently, the clocks synchronize themselves with the time received from the signals, maintaining accuracy until the next decoding cycle begins. The consistent synchronization of Radio-Controlled Clocks with signals from radio stations ensures an accuracy of better than plus or minus a half second (¡À0.5 seconds) a day.

Another advantage lies in their ability to automatically correct for daylight-saving time, leap years, months with different numbers of days, and more. All in all, they represent an excellent choice for businesses, schools, and other facilities alike.

Get your hands on a custom LED Radio-Controlled Clock from Aboutime today, we are waiting to provide you with 7X24 service.

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