The relationship between base station and mobile phone jammer

The relationship between base station and mobile phone jammer

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Mobile phone signal jammer is mainly aimed at all kinds of places where the use of mobile phones is prohibited, such as various examination rooms, schools, gas stations, churches, courts, libraries, conference centers (rooms), theaters, hospitals, governments, finance, prisons, public security, and military centers. It is understood that mobile phone signal jammers currently on the market can limit mobile phone signals that are 500M meters away from the launching station and have a radius of >20 meters. The shielding radius is adjustable. It only shields the mobile phone signal without affecting other electronic devices. Save energy, the power is 20W-480w.
GPS cell phone blocker
When the mobile phone is working, it is within a certain frequency range. The mobile phone and the base station are connected by radio waves, and the data and sound transmission are completed with a certain baud rate and modulation method. In view of this communication principle, the mobile phone signal jammer scans from the low end frequency of the forward channel to the high end at a certain speed during the working process. The scanning speed can cause garbled interference in the message signal received by the mobile phone, and the mobile phone cannot detect the normal data sent from the base station, so that the mobile phone cannot establish a connection with the base station. The mobile phone is manifested as a search network, no signal, no service system and other phenomena.
According to professionals, in fact, people live in an electromagnetic radiation environment all the time. Because the earth itself is a large magnetic field, in addition to natural radiation sources, microwave ovens, computers, televisions, hair dryers, radios and other household appliances that are inseparable from people's lives will generate electromagnetic radiation. For example, the radiation intensity of a TV set (the front side is close to the display screen) is 50 microwatts/cm2, and the radiation intensity of the back side close to the cabinet is 40-50 microwatts/cm2. Compared with these commonly used household appliances, the base station radiation is very small.
Take a mobile phone in a call state as an example. When the signal is full, the measured radiation value is about 0.5 microwatts/square centimeter. When the signal is three-grid, the radiation value increases to 1 microwatt/square centimeter, and the signal is weak to two squares. When the signal is used, the radiation value is increased to 12 microwatts/square centimeter, and when the signal is one grid, the radiation value is as high as 50 microwatts/square centimeter. "When the signal is weak, the amount of mobile phone radiation received by the human body for 1 minute is equivalent to the amount of radiation from the nearby base station to the human body for 347 days (nearly 1 year)!
Signal jammer consume a lot of battery for most mobile phones. Since the mobile phone jammer is turned on, the signal between the mobile phone and the base station will be shielded. Actually, it is interfered and cannot form normal communication with the base station. Then, many mobile phones have this function: when there is no signal, the mobile phone must be very Efforts to search for the signal, which leads to a lot more power consumption than the normal standby state!

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