Cell phone jammer disables specific signals
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While popularizing mobile phones, in addition to strengthening the promotion of civilized use of mobile phones, mobile phone signal jammers have come out and become increasingly civilians to disable mobile phone signals in specific locations. The mobile phone is connected to the base station by radio waves through a certain frequency, and completes the transmission of data and sound with a certain baud rate and modulation method. In view of the above principles, a mobile phone jammer is generally composed of a power supply, an electronic scanning control unit, a segmented radio frequency module unit, an amplifier unit, and a transmitting antenna unit. The scanning signal generated by the signal generator passes through the inverter, enters the oscillator and modulates it to the mobile communication working frequency band, and then is amplified by the power amplifier and the voltage regulator tube controls the power. The amplified frequency sweep signal is transmitted into the air in the form of radio waves. Because the frequency sweeping signal forms garbled interference in the message signal received by the mobile phone, the mobile phone cannot establish a normal connection with the base station. At this time, the mobile phone will leave the base station communication network, and there will be phenomena such as searching the network, no signal, and no service system.