Abstract: A radio clock, which is a mechanical clock with an hour hand, a minute band a second hand driven by motors, comprises an antenna, a receiving circuit, and a processor to receive timing information as the reference time for time setting. An hour pinion, minute pinion, and a second pinion are engaged respectively with an hour transmission pinion, a minute transmission pinion, and a second transmission pinion. The hour transmission pinion, the minute transmission pinion, and the second transmission pinion are provided, respectively, with an hour masking disc, a minute masking disc, and a second masking disc, wherein the hour masking disc, the minute masking disc, and the second masking disc are provided with protruded masking fins, respectively. The transmission pinions are configured to close to their corresponding masking discs.

Abstract: A method for timing a radio clock includes the steps of initiating the photoelectric element to sense the references on the hour hand, the minute hand and the second hand, determining whether a reference that stands for the second hand is detected, stopping the second hand at a zero position when the reference that stands for the second hand is detected, initiating the motors of the hour and the minute hands, revolving the hour and minute hand wheels until a reference mark on the hour hand wheel is detected, stopping the hour hand wheel and the minute hand wheel when the reference mark of the minute hand wheel is detected by the photoelectric element; and synchronizing the hour hand, the minute hand and the second hand with readings of the hour, the minute and the second of a time signal sent from a time station.

Abstract: A radio clock, which is a mechanical clock with an hour hand, a minute hand, and a second hand driven by motors, comprises an antenna, a receiving circuit, and a processor to receive timing information as the reference time for time setting. An hour pinion, minute pinion, and a second pinion are engaged respectively with an hour transmission pinion, a minute transmission pinion, and a second transmission pinion. The hour transmission pinion, the minute transmission pinion, and the second transmission pinion are provided, respectively, with an hour masking disc, a minute masking disc, and a second masking disc, wherein the hour masking disc, the minute masking disc, and the second masking disc are provided with protruded masking fins, respectively. The transmission pinions are configured to close to their corresponding masking discs.

Abstract: A method for timing a radio clock has the steps of initiating the photoelectric element to sense the references on the hour hand; determining whether a reference is detected by the photoelectric element; determining whether a reference that stands for the second hand is detected; determining whether the motor of the second hand continues to run; initiating the motors of the hour and the second hands; sensing the references on the hour hand by the photoelectric element; determining the nature of the detected reference; stopping the motor of the hour hand and the motor of the minute hand when a reference that stands for the minute hand is detected by the photoelectric element; and synchronizing the hour hand, the minute hand and the second hand with readings of the hour, the minute and the second of a time signal sent from a time station.