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Signal blocker Jamming Define

Refers to the signal that causes damage to the reception of useful signals. According to the frequency band division, it is defined as the interference caused by the interference signal in the uplink frequency band of the mobile network, and the interference caused by the external radio frequency interference source to the base station.

Under the condition of no uplink interference, the base station can receive the farther mobile phone signal. When the uplink interference occurs, the mobile phone signal needs to be stronger than the interference signal in order to communicate with the base station. Therefore, the mobile phone must be closer to the base station. signal jammer means that the interference signal sent by the interference source is in the downlink frequency band of the mobile network. The mobile phone receives the interference signal and cannot distinguish the normal base station signal, so that the communication between the mobile phone and the base station is interrupted, resulting in dropped calls or failure to register.

Newest 24 Band Portable Jammer Blocks All Cell Phones 5G 4G 3G 2G

Portable Jammer

World First 24 Antennas all-in-one design wireless signal Jammer with nylon cover for portable, jamming all types of Android phones, Tablets, Smart Phones, iPhones, Win phones etc. that use 2G, 3G, 4G 5G, and CDMA 450Mhz


Desktop 12 Bands Phone Signal Jamming Multiple Frequencie

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The jammers are customized according to the frequency bands of different countries, please confirm that the purchase country and the actual use country are consistent. Otherwise it can not be used.Please read the jammer function before purchasin


10 Antenna Handheld Adjustable Cell Phone Signal Jammer

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Hand held signal shielding device is our factory using advanced technology, for the contiuous developmentof communication standards, according to the actual situation of domestic and international wireless ommunication to develop


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