how to build a cell phone signal jammer

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  •  Mobile Phone Signal Jammer Used On Police Cars Manufactures
    ... the mobile phone signal jammer used on the police car. Function: 1.We adopt the beamed antenna to shield the signal in the especial direction in order to increase the shielding distance and build up the... more
    Categories:Mobile Phone Signal Jammer
    Telephone:0086-0898-66895098
    Country/Region:china

    Mobile Phone Signal Jammer Used On Police Cars

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