What does the radio alarm clock look like? Is there one in China?

Radio-wave clocks and watches add the functional structure of receiving radio long-wave signals, data processing and automatic correction to the timely electronic clocks and watches, and can receive the standard time signals sent by the ground transmitting station. After receiving this accurate time code, each radio clock can automatically correct the travel time error of the electronic clock and watch after being processed by the data processor.

The travel time of each radio clock is controlled by a unified and accurate time code, which realizes the consistency of high-precision measurement time and display time of all radio clocks.

China has a radio alarm clock.

April 2002: During the Shenzhen Exhibition, Xi 'an Gaohua Company held the "China Radio Clock Surface Market and Investment Promotion Press Conference", which officially launched the China Radio Clock products designed by China in batches for the first time, ending the history that the watch industry in China did not have its own national radio clock.

Working principle of electric wave clock

First of all, the standard time signal is encoded by the standard time service center, and the time signal is transmitted and broadcast by radio long wave with low frequency (20KHz ~ 80KHz) carrier. The electric wave clock receives the low-frequency radio time code signal through the built-in micro radio receiving system, and the time code signal is modulated by the special integrated chip, and then the control mechanism in the timing device automatically adjusts the timing of the electric wave clock.

Through this technical process, all radio clocks (or other timing devices) that receive the standard time signal are highly synchronized with the standard time of the standard time service center, and then all radio clocks display strictly consistent time.