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In the field of communications, a signal is a physical quantity that represents a message. For example, an electrical signal can represent different messages through changes in amplitude, frequency, and phase. Interference is the impairment of the reception of useful signals. Interference generally consists of the following two types, crosstalk: the coupling phenomenon between two signal lines in electronics. Radio interference: By sending radio signals to reduce the signal-to-noise ratio, it achieves the behavior of disrupting communications and blocking radio station signals.

There are various reasons for the interference, and the degree of harm caused by signal jammer is different, such as noise in broadcasting, sudden deterioration of wireless TV signal, interruption of wireless data transmission; serious interference to aviation navigation communication and water communication, such as domestic The interference of the command frequency of the control tower of an airport caused the aircraft to return and a serious backlog of flights Cable television systems and licensed broadcast stations use many of the same frequencies to transmit programming. Cable TV signal leaks can interfere with nearby wireless services that use the same frequency as the cable provider.

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


10 Antenna Handheld Adjustable Cell Phone Signal Jammer

10 Antenna Signal Jammer

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


Desktop 12 Bands Phone Signal Jamming Multiple Frequencie

Multiple Frequencies Jamming

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


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