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The principle of mobile phone signal jammer | #signal jammer

The principle of mobile phone signal jammer

Common signal jammers for sale on the market have operating frequencies: 869~894MHz; 825~960MHz; 1805~1880MHz and 1900~1990MHz, etc. The applicable frequency bands are CDMA800, GSM900, DCS1800, and PCS1900. It can control a range of about 40 meters in diameter, using a DC-DC converter inpu
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