What are the operating points of the signal detector and the types of mobile phone signal jammers?
What are the operating points of the wireless signal detector?
Wireless signal detectors require two complementary steps, namely search and monitoring. The search mode allows to detect and locate the currently activated transmitter. The monitoring mode can continuously monitor the radio signal, so once a signal transmitter is activated, it can be monitored.
Before searching for the wireless signal detector, all radio signal sources (mobile and cordless, Bluetooth, Wi-Fi, microwave oven) in the target area should be turned off. Use any sound source to activate the transmitter. Place the RF detector in the center of the room and start the search mode. Slowly approach the location where the transmitter may be present and observe the signal level change. Sound and light display are available for selection. The closer to the signal source, the higher the flashing frequency. An increase in the frequency of rapid flashing indicates that there may be hidden monitoring equipment.
If it is determined that the search is complete, start the monitoring mode and place the radio frequency detector in any convenient location. This product should remain stable to avoid false alarms. An alert will be generated when a threat signal is detected. The efficiency of radio signal detection in monitoring mode depends on whether the threshold level is set correctly. Take the mobile phone as an example, it depends on the signal amplitude value.
In the digital signal monitoring mode of the wireless signal detector, the signal level of mobile and cordless, Bluetooth and other similar devices should be defined and the threshold level should be adjusted. The higher the threshold, the lower the false alarm rate, but the monitoring distance should be relatively reduced.
What are the types of mobile phone signal jammers?
Now our common mobile phone signal jammers mainly include test room special signal jammers and mural-type mobile phone jammers.
Special signal jammer for examination room. The main principle of this equipment is that within a certain frequency range, the mobile phone and the base station are connected by radio waves, and the data and sound transmission is completed with a certain baud rate and modulation method. The jammer scans from the low end frequency of the forward channel to the high end at a certain speed during operation. This scanning speed can cause garbled interference in the message signal received by the mobile phone. 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 and achieve the purpose of shielding the mobile phone signal. No service system and other phenomena.
Mural cell phone jammer, mural mobile phone jammer combines the functions and beautiful features of a mobile phone jammer, and is especially suitable for some large-scale meetings and high-end secret-related places.
The BPS-7A smart phone signal shielding machine is an indoor unit, and it is applicable to any indoor place where a mobile phone signal shielding device is needed:
For schools, use full shielding during exams. Efficient shielding, maintaining the normal order of the exam, and adopting the design of heat dissipation strips, so there is no worry that fan noise will affect the exam.
High-end secret-related places, concealed murals are installed in disguise, especially suitable for high-end secret-related places. The shielding performance is stable, and there will be no phenomenon of sometimes shielding and sometimes unable to shield, the shielding distance is super far, and the shielding distance can be adjusted.
In prisons, the BPS-7A smart phone signal detection and shielding machine makes the detention center and other supervision places more humane. The mural-style concealed installation prevents prisoners and police officers from having too strong resistance. The pictures can be written as educational reform slogans, and they are always reminded of reforms. The high-gain line design makes it easier to penetrate the iron door of the prison, so that it is shielded near the window, and there is no dead angle. Taking a standard prison building with a length of 100 meters as an example, only two or three units on one floor are needed to achieve 100% shielding.