When there is a wedding, the cell phone rings almost every five minutes, said Bumaro Carranza, the deacon of the parish. "This is really a problem, because sometimes, even the bridegroom himself will forget Turn off your mobile phone.” At present, four Roman Catholic churches in the Monterrey area have installed ordinary book-sized jammers unknowingly into the portraits of the Virgin Mary and the statues of the saints. These Cell Phone Jammer Circuit Design s cost about $2,000 each, and they can start working through remote control, launch low-frequency radio waves, and "intercept" cell phone signals within a radius of 100 feet (about 30 meters). When someone calls a mobile phone user who is "quarantined", they will receive a prompt that "the user is not in the service area" or "the phone cannot be connected". It is understood that in 1998, the official of Netline, which sold the first mobile phone signal jammer, said that the company sells thousands of jammers every year, and their business scope is all over the world, and there are even dozens of suppliers. The merchant sells this instrument on the Internet. cell phone jammer
The principle of signal shielding is to transmit signals in the same frequency band as the signal base station through a certain Cell Phone Jammer Circuit Design device, so that the communication equipment within a certain range receives the invalid signal transmitted by the shielding device but cannot receive the effective signal transmitted by the signal base station, so as to reach the mobile phone, etc. The signal of the terminal communication equipment is interfered/blocked and cannot be connected to the communication base station normally. If a piece of software can shield a signal, how is the shielded signal emitted? You must know that the signal emitted by the mobile phone is nothing more than WIFI/Bluetooth,
