Working principle and characteristics of full-band mobile phone signal jammers

We have all experienced situations where mobile phone signals are blocked, such as during the college entrance examination. Signal blockers are commonly used in such scenarios, but many people have limited knowledge of such equipment. Today we will explain to you the working principle, characteristics and challenges encountered during the use of full-band mobile phone signal blockers.

Introduction to full-band mobile phone signal blockers

Full-band mobile phone signal blockers can effectively block various signals, including CDMA (Telecom), GSM (Mobile, Unicom), SCDMA (Netcom DHS), DCS (1800MHz), PCS (1900MHz), PHS (Telecom Xiaolingtong), 3G, 4G, 5G, Wi-Fi, Bluetooth and other signals. They are mainly used in places that require confidentiality, quietness, explosion-proof, and no external interference, including examination rooms, prisons, courts, major venues, public libraries, theaters, churches, gas stations, petrochemical plants, hospitals, etc.

Working principle of full-band mobile phone signal blockers

The working principle of full-band mobile phone signal blockers is to use electromagnetic waves to establish a connection between communication equipment and base stations within a specified frequency band, transmit data through a specific serial port baud rate and modulation method, and realize wireless communication.

The working principle of the full-band mobile cell phone jammer is to transmit a lower operating frequency to the wireless communication device at a specific speed during the boot process, and gradually scan to a higher frequency. This scanning speed will cause the mobile phone to generate an error code before receiving the information file data, resulting in the mobile phone being unable to receive stable data information from the base station, and thus unable to establish a connection, resulting in the mobile phone being unable to search the network, poor signal quality, and unable to use services.

During the use of the full-band mobile phone signal jammer, it must be ensured that the transmitted signal is within the authorized frequency band and meets regulatory requirements. In addition, due to factors such as signal interference or signal reflection, it may be difficult to achieve effective signal shielding in certain environments.

In summary, the original intention of the full-band mobile phone signal jammer is to shield various mobile phone signals in specific environments to ensure confidentiality and prevent external interference. Understanding their working principles and potential challenges helps us understand their impact and limitations. The best-selling wifi jammers and GPS jammers in recent years.

Transmission characteristics of full-band mobile phone signal jammer

1. Only mobile phone signals are blocked, and other electronic devices are not interfered with.
2. Only mobile phone signals in the designated examination room are blocked, and mobile phones outside the examination room or at the base station are not affected.
3. Downlink frequency of the base station is blocked, and uplink frequency is not affected.
4. Environmental protection, low-intensity electromagnetic field emission, in line with national industry standards, harmless to human health.
5. Easy to use, just connect the power supply and press the switch to start automatically.

Questions and instructions related to full-band mobile phone signal jammer

1. Why is the actual shielding range of the full-band mobile phone signal jammer inconsistent with the shielding range indicated in the product manual?

A: The shielding range of the full-band mobile phone signal jammer depends on the strength of the electromagnetic induction field, and the strength of the electromagnetic induction field is affected by the distance from the communication station. Generally, the best shielding distance is about 300 meters. The full-band mobile phone signal jammer manufacturer tests under normal circumstances, and the shielding range will be different.

2. Will the shielding of the full-band data signal generate a radiation source and cause harm to human health?

Answer: Questions about electromagnetic radiation are often asked. In fact, all electronic devices have radiation sources, but the amount of radiation is very small and will not cause harm to the human body. And devices like mobile phones that we put next to our ears on a daily basis also have radiation sources. my country has strict regulations on radiation, and all devices must meet or fall below established standards before they can be put on the market. The amount of radiation generated by the full-band mobile phone signal jammer is significantly lower than the national standard, and will not cause adverse effects on human health, so it can be used with confidence.

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