arduino cell phone jammer can help mask signal

The working principle of the Arduino Cell Phone Jammer (also known as the cell phone jammer and the mobile phone signal amplifier) ​​is: the scan signal generated by the sawtooth signal generator is inverted by the inverter, and then enters the voltage-controlled oscillator for code division multiple access,It is modulated on the same frequency band as the three downlink frequencies of PHS. The modulated scan signal is amplified by the power amplifier. The power of the power amplifier is controlled by the voltage regulator tube to make the transmission power less than 1W. The amplified scan signal is transmitted in the form of radio waves. In the air.

The electromagnetic signal strength from the mobile phone signal booster is very weak. Although our internet speed has been greatly improved, from 2G to 4G and the upcoming 5G. But when the signal is not good, the 4G signal will be changed to 3G or even 2G in the cell phone signal bar. Through some signs on the mobile phone, we can see the status of our mobile phone network, cell phone jammer, but do you know what it means when the HD logo appears in the mobile phone bar?As long as the electromagnetic radiation intensity of qualified products produced by regular manufacturers has been rigorously tested by national authoritative testing and certification agencies, the electromagnetic field intensity measured at all sampling points is lower than the "Electromagnetic Radiation Protection Regulations" stipulated by the State Environmental Protection Administration.

Because the frequency sweeping signal forms random code interference in the message signal received by the mobile phone, the mobile phone cannot receive the normal data sent by the base station, which prevents the mobile phone from establishing a normal connection with the base station, thereby making the mobile phone separate from the base station communication network.The characteristic of the Arduino Cell Phone Jammer is to find a system with no signal and no service in the network to achieve the blocking effect, instead of relying on unlimited power increase to compete with the mobile phone base station to achieve the blocking effect.