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A French dad faces jail time and a hefty fine (phạt nặng) after using a signal jammer (đài làm nhiễu âm) to prevent his kids from going online and taking the rest of a nearby town down with them.

Starting at midnight and until 3 AM every day of the week, the French town of Messanges found that their cellular and Internet service were no longer working.

After a mobile carrier reported the issue to the Agence nationale des fréquences (ANFR), a public agency responsible for managing the radioelectric (vô tuyến điện tử học) spectrum (quang phổ) in France, it was determined that a signal jammer was being used to block radio frequencies (tần số) in the town.

A signal jammer is a device that transmits radio waves on the same frequency as mobile devices to prevent them from connecting to cell towers and receiving legitimate signals.

A report by the ANFR explains that a technician traced the jamming signal to a house in a neighboring town, where a homeowner admitted to purchasing a jammer online and using it to force his teenage kids offline.

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