signal jammer equipment is used by signal users, while blocking more frequency bands to achieve the goal of peace and security, but there are many other high-quality antenna signals on the market currently blocking desktops. Sell more now If you want more useful information, it is more convenient, you can read this paragraph here.
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It is easy to buy devices on the Internet that will interfere with mobile phone wireless signals, GPS signals, Wi-Fi systems, etc. The jammer works by flooding the area with noise covering the radio frequency band to be captured. Because they are inexpensive devices that are not approved by the Federal Communications Commission (FCC), they usually broadcast noise in other frequency bands. The US cell frequency band is adjacent to the 800 MHz frequency band deployed by Nextel, some public safety, government, and commercial systems, so these signals may interfere with the target frequency band.
Signal jammers are used in schools, restaurants and other places where owners wish to prevent people from making and receiving calls indoors. Recently, prisons have begun to consider deploying jammers to prevent prisoners from using mobile phones in prisons. It is illegal to own a mobile phone in prison, but again, this does not seem to prevent prisoners from owning a mobile phone.
The newly designed hidden antenna handheld mobile phone jammer can block all mobile phone signals, LOJACK, GPS, Wi-Fi, RF signal 16-band all-in-one frequency, powerful, the interference range is 2 to 20 meters (depending on the given Signal strength of the area). It's easy to hold and it's worth having.