![]() A special feature of some CASIO radio watches is that they are equipped to receive signals from all six transmitters. The radio tower in Mainflingen reaches a watch with radio technology within a radius of up to 1,500 km depending on the model. The tower for China is located in Shangqiu. The tower in Japan can be found in Fukushima in the North East and Fukuoka in the South West. In the USA, the tower is located in Fort Collins. In Great Britain, the tower can be found in Anthorn. The time calculated by atomic clocks is sent to radio towers.In Germany, the tower is located in Mainflingen near Frankfurt. Mechanical wristwatches - no matter how sophisticated they are - lapse many more seconds behind. To put this into perspective: a quartz wristwatch falls a few seconds out of sync each month. Over a period of one million years, they could "theoretically" fall approx. How accurate are atomic clocks?Ītomic clocks hardly deviate at all from ideal time. ![]() In China, the time is sent by the National Time Service Center. In Japan, the official time is determined by the Communications Research Laboratory (CRL) in Tokyo. In Great Britain, the National Physical Laboratory in Teddington near London is in charge of this task.In the USA, this job is carried out by the National Institute for Standards and Technology (NIST) in Fort Collins/Colorado. In Germany, the official time is established in the Physkalisch-Technische Bundesanstalt in Braunschweig the national meteorology institute. Where does the time come from?Ītomic clocks are the most accurate clocks in the world. No setting, no resetting, always on time. The exact time is transmitted to the watch from atomic clocks - the most precise watches in the world. Regular signal reception ensures that your watch always shows the correct time. Here you can learn about the technology that makes it possible, and about how your watch picks up the time. In Europe, the change from summer to winter time is also completely automatic. Some models even receive signals in North America, parts of Canada and Mexico (the radio tower in Fort Collins sends signals for a radius of up to 3,200 km) and even in Japan or China. All CASIO radio watches receive signals almost anywhere in Europe. The advantages of radio-controlled watches are obvious: Once they have been set to the relevant time zone, they always display the exact local time.
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