Mobile phone jammers

Electronic signals play a very important role in modern warfare. The stability of the signal is very important for combat. Countries that study how to protect the stability of their own signals will find ways to influence the signals of other countries. According to a report by the South Korean government, North Korea has developed a powerful jammer that can jam GPS (Global Positioning System) satellite signals within a range of "more than 100 kilometers." The news agency said that information about the GPS jammer has been included in the report submitted to the National Defense Committee of the Korean National Assembly this week.

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