The phone shielding is mean cell phone jammer or cell phone shielding system send out a kind signal, namely spurious signal, interfere cell phone logging on the Net this link?s several data code so that the phone can?t recognize Netinstructions and can?t logging on the Net. Achieve the purpose which make the phone can?t normal communication.
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When the phone working, within certain frequency range the phone and base station connect via radio wave, with certain Baud rate and modulation system complete the data and voice transmission. At the time of local environment necessarily adopt phone shielding, the cell phone jammer or cell phone shielding system interfere the mobile communication base station launcher and phone through the electromagnetic wave to signal transmit, and then the phone fail communicate for can?t receive the signal from base station launcher.
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The above we can know the basic principle of cellular phone jammer. Before I really know these, each time enter the examination room or meeting room and other public place prohibit use mobile phone, I always think because on the wall equipped with certain especial material to be use to cut off the signal communication. But until now know the idea of mine is really not scientific.
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Article resource: http://blog.enwholesale.com
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Article Tags : cell phone jammer, cellular phone jammer
Source: http://www.workoninternet.com/business/reviews/166-semiconductors-equipment/163960-cell-phone.html
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