Working principle and operating frequency band of mobile phone signal jammer
Mobile phone jammer is a signal shielding device, which can effectively shield CDMA (China Telecom), GSM (China Mobile, China Unicom), SCDMA (Netcom Dalingtong), DCS (1800MHz), PCS (1900MHz), PHS (Telecom PHS) ), all communication signals such as 3G mobile phone signal, WIFi and 4G mobile phone signal. When the mobile phone is working, the mobile phone and the base station are connected by radio waves within a certain frequency range to complete the transmission of data and sound with a certain baud rate and modulation method. According to this communication principle, the mobile phone signal jammer scans from the low-end frequency of the forward channel to the high-end frequency 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 manifests as the phenomenon of searching the network, no signal, no service system, etc. Three unique technical advantages of Jike mobile phone shielding system ●TD pilot screen synchronization technology ●Digital point frequency hopping technology ●Combining technology TD pilot synchronization technology can effectively select the downlink pilot time slot of 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. If this equipment is not used, the mobile 4G/3G base station will be strongly interfered or even paralyzed in a large area. The digital point frequency hopping technology effectively shields the ultra-strong signal (pilot signal) of the base station in a targeted manner, overcoming the technical bottleneck that the ultra-strong signal cannot be effectively shielded and the radiation is large, and the electromagnetic radiation is only a few percent of the frequency sweep method. one. Combining technology ● Antennas of different types, sizes, and indicators can be selected to extend the distance between the antenna and the host, and divide them into shielded areas one by one (virtual box 1). ●The power can be allocated according to the power required by different types of antennas (virtual box 2). ●Full-band and multi-frequency shielded signals can be combined and transmitted in one cable (virtual box 3). ●All frequency bands, large and small power full-scan modules and digital point frequency hopping modules can be freely combined and used (virtual box 4). Jike mobile phone jammer product details adopts cavity modular structure ● to ensure the stability of high-frequency signals and improve reliability; ● to facilitate the flexible configuration and combination of products; ● to facilitate system upgrades; fully enclosed chassis to prevent damage, super natural heat dissipation capacity extension Service life ● Rain-proof, moisture-proof, dust-proof chassis; ● Large and efficient, optimized heat dissipation base plate, with strong natural heat dissipation capacity; ● There is no adjustment device outside the chassis, and the power supply is directly introduced into the chassis to prevent man-made damage; Output power redundancy ● Power components are designed with large horse-drawn carts; ● Ensure that the output of the host is not easily damaged in the case of open circuit, short circuit and overload; ● Ensure long-term operation of the system; Impedance adaptive ● When a certain part of the machine is damaged, the host can adaptively match the output shielding power; ● Ensure that the intact device part can play a normal shielding function.