Will the use of mobile phone signal jammers in the campus examination room affect the school time of the radio clock?
The use of mobile phone signal jammers in the examination room is basically standard now, and it is not surprising that everyone has seen them. When you enter the examination room, you will also find a relatively common device, that is, a radio clock. A radio clock, as the name suggests, is a clock that displays time, but a radio clock is not a simple clock. A radio clock is a clock that ensures the accuracy of time by receiving wireless signals from the National Time Service Center. Much more advanced than ordinary clocks.
And the signal shielded by the cell phone signal jammer is the wireless signal, so will the cell phone signal jammer interfere with the radio clock? To know whether the cell phone signal jammer interferes with the radio clock, the first thing to understand is the frequency used by the radio clock when it receives the wireless signal of the National Time Service Center. There are two types of radio clocks that receive signals from the National Timing Center. One is to receive timing signals through GPS, and the other is to obtain timing signals through 4G signals. The signal emitted by the mobile phone signal jammer does not contain the frequency of the GPS signal, so it will not interfere with the time signal received by the radio clock GPS. When another radio clock obtains the timing signal through the 4G signal, the mobile phone signal jammer will interfere with the time signal obtained by the radio clock, but there is no need to worry about the large time error displayed by the radio clock.
When the radio clock receives the timing signal, it is mainly used for the time adjustment of the radio clock. The cell phone wifi jammer does not affect the normal use of the radio clock, and the radio clock still displays the current time according to the normal time even when it does not receive the timing signal. Time, even if the radio clock is interfered by the shielded signal of the mobile phone signal jammer, it will not cause a big error in the time display of the radio clock. Because even if the radio clock cannot be calibrated by the timing signal for more than half a year, the error between the time displayed by the radio clock and the standard time is extremely low, and it can basically be ignored.
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