featured Anti cheating in college entrance examination with mobile phone signal jammer
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Which frequency bands should be added when the mobile phone signal interference system is upgraded to 5G?
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The installation of the full-band shielding device in the detention center is completed
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Beijing conscription medical examination, the first use of electronic countermeasures jammer vehicle
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Shanxi college entrance examination will install signal jammers in the examination room
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Full-band jammers are turned on in the Guizhou examination room
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The armed police force uses signal jammers to strengthen security
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