The mobile phone jammer is a signal-shielding device that can effectively block CDMA (China Telecom), GSM (China Mobile, China Unicom), SCDMA (Netcom), DCS (1800MHz), PCS (1900MHz), PHS (Telecom Little Smartphone) ), 3G mobile phone signals, WIFi and 4G mobile phone signals and other communication signals.
Shielding principle of mobile phone signal jammer
When a mobile phone works, it operates within a certain frequency range. The mobile phone and the base station are connected through radio waves to complete the transmission of data and sound at 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. This scanning speed can cause garbled interference in the message signals received by the mobile phone. The mobile phone cannot detect normal data sent from the base station, making it impossible for the mobile phone to establish a connection with the base station. Mobile phones show symptoms such as searching the network, no signal, and no service system.
- TD guide screen synchronization technology
- Digital frequency hopping technology
- Road combining technology
Three technologies used in mobile phone blocking systems
TD pilot synchronization technology can effectively select the downlink pilot time slot of the TD signal for shielding. After synchronization, the shielding power can accurately act on the downlink pilot time slot to prevent interference with the base station and greatly reduce electromagnetic radiation. Failure to use this equipment will result in strong interference to mobile 4G/3G base stations or even large-scale paralysis.
Digital point frequency hopping technology effectively shields the base station's extremely strong signals (pilot signals) in a targeted manner, overcoming the technical bottleneck of being unable to effectively shield extremely strong signals and causing large radiation. The electromagnetic radiation is only a few percent of the frequency sweep method. one.
You can choose antennas of different types, sizes, and indicators, extend the distance between the antenna and the host, and divide them into shielding areas one by one.
The power can be adjusted according to the power required by different types of antennas.
Full-band, multi-frequency shielded signals can be combined and transmitted in one cable.
Each frequency band, large and small power full sweep modules and digital point frequency frequency hopping modules can be freely combined and used.