Since the mobile phone is designed around the spectrum requirements, it must send and receive signals effectively. If the antenna is still able to receive the input signal through the physical CLP connection for testing, add it to the front end of the transmitter and receiver. After connecting the antenna, it may be able to send larger signals to the outside with higher power when measuring the transmitting side of the mobile phone. After eliminating the antenna port matching on the test frequency (removing the antenna from the antenna connector), the mobile phone can receive and transmit signals with high attenuation levels. · Due to external interference, since the RF cable is already connected to the mobile phone, it is important to use a properly shielded cable, preferably an n-type connector with a triple shielded cable. The shielding of mobile phones will be greatly attenuated. When testing interference from other mobile phones or unknown noise spectrum, for example, to perform specific tests on mobile phone interference, it is very useful to determine the shielding attenuation before the test. The screen phone is not the only way to eliminate noise from external interference. Careful handling of the frequencies of all tested phones can effectively avoid interference. This requires more complex control software initialization to eliminate conflicting frequencies between the number of channels and frequencies. ·Pay close attention to the distance between two telephones using the same frequency, which can be used repeatedly. Example cell phone jammer are very useful in determining safe reuse distances.
As an important place for criminals, the safety of prisons is very important. These places are often equipped with multiple dogs. They can help managers search for prison safety and contraband, ensure the safety of prisoners, and manage public safety. prison. Using traditional police dogs to help prison staff find their phones sounds fun, but it’s also very effective. For prisoners who have mobile phones to communicate with the outside world, you can also use professional mobile jammers, which have been popularized in many prisons, and drones (uav) jammers prevent the delivery of behavioral drugs from entering the prison. As we said before, cell phone jammers have been used in Berlin prisons. Using cell phone jammers in prisons is one way to prevent prisoners from using cell phones.