Smart phones are very important to our lives. They are important tools for our communication and entertainment. Do you have a habit of checking your phone all the time? With the improvement of living standards, people spend more time looking at their mobile phones, causing a bad influence on their lives and causing problems for others.
It is necessary to protect the concert hall and other participants through cell phone jammer, such as mobile phones, and to ensure the smooth execution of entertainment. The deterrent effect of communication is limited to a certain space, which is the space (concert hall, theatre and entertainment hall). It is called "concert hall" in the next article. Is it open or not specified number.
The GPS jammer is a plastic device whose size can also be attached to a car dashboard. This can be bought on the Internet, for example, a truck driver who doesn't want the boss to monitor where to use it. Because of the machine, the airport has been in trouble, and some of the city's cellphone radio waves have been blocked. A jammer can interfere with GPS within a few kilometers. As a result, researchers from around the world are limiting their intelligence to prevent the destruction of GPS signal jammer.
If the GPS signal is the level of starlight seen in the clear mountain, it can be seen as a powerful searchlight. If a strong interference signal occurs within the same frequency range, the GPS signal will be disturbed. In initial positioning of GPS satellites is it considered the circumstances do not use by malicious interference from outside, in particular, for wave interference (hostile signal interference) or cheat (by mixing interference) assume soft ground interference and destruction mainly related facilities of interference.
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