The mobile phone signal indoor distribution system installed in the building where the conference room is located, commonly known as the mobile phone signal amplifier, the mobile phone signal in the conference room will become very strong, then the mobile phone signal indoor distribution system will seriously affect the shielding effect of the conference room signal shielding device. . In this case, if you want to improve the shielding effect of the conference room signal jammer, you can start from the following aspects:

1. Increase the number of signal jammers in the conference room, use multiple units together, and subdivide the frequency of the cell phone jammer used in the indoor distribution system of mobile phone signals to meet the requirements of covering the entire conference room. 2. Use the spectrum analyzer test or the mobile phone signal detection software Cellular-Z (Android phone installation only) to know the frequency band that cannot be shielded by the mobile phone signal blocker in the on-site conference room. The shielding module is used to specifically shield the frequency band with strong mobile phone signals, so as to achieve the effect of shielding these signals by the conference room signal shield. New 4 Antennas Portable Mini GSM/GPS Jammer 3. You can contact the operator of the indoor mobile phone signal distribution system to reduce the on-site mobile phone signal strength by adjusting the transmit power of the indoor signal distribution system or the direction of the antenna board, or when using the conference room signal shield The power of the cell phone signal distribution system is turned off to reduce the cell phone signal strength in the conference room. So as to ensure the shielding effect of the conference room signal jammer. 4. Remove the antennas of all indoor signal distribution systems within 15 meters around the conference room where the conference room mobile phone signal jammer is used, which can also greatly reduce the signal strength in the conference room and also improve the conference room mobile phone. The shielding effect of the signal shielding device. The above methods are for reference only, and the actual operation is still subject to the on-site environment.

At present, the day when colleges and universities will hold the CET-4 and CET-6 exams is getting closer and closer. We all know that generally larger or important exams are basically equipped with mobile phone signal jammers and must be turned on during the exam. In the CET-4 and CET-6 tests, the listening test will be conducted first, and the campus radio will be used in the listening test. However, after the mobile phone signal shielding device is turned on, the school testers will feedback that the radio will be more or less disturbed. So many people will ask, why the campus broadcast is interfered by the mobile phone signal jammer, and how to deal with it?

Signal Blocker

The frequency band used for campus broadcasting is the wireless signal from the low frequency band of 88MHz-108MHz, and campus broadcasting only needs to cover the entire university, and does not require the propagation distance to be too far, so the transmission power of general campus broadcasting transmitters is not large. So the signal is relatively weak, and it is more than enough to cover the entire campus without interference.

The signal frequency emitted by the mobile phone signal shielding device is the same as the signal frequency used by the mobile phone, and there is no frequency band that is repeated or similar to the campus broadcast. Therefore, in theory, after the cell phone jammer is turned on, it will not cause any interference to the campus broadcast. But at present, after the mobile phone jammer is turned on, it will raise the bottom noise near the jammer to a certain extent within a certain range. If the radio is too close to the jammer, the raised bottom noise is very likely to transmit the signal from the campus broadcast. Submerged, when the radio receiving the campus radio frequency will be jammed.