3.5 Characteristics of cell phone jammer shielding system
Advancement, reliability, practicability, expansibility and convenience.
3.6 Key factors of influencing performance of cell phone jammer shielding system
3.6.1 Shielding effect
3.6.2 External interference
3.6.3 Electromagnetic radiation
3.7 Main purpose of cell phone jammer shielding system
3.7.1 Upmarket civil locations: large-scale concert hall, large-scale theater, large-scale auditorium and so on; mainly the quiet and confidential locations.
3.7.2 Party and government administration, military police and national safety department: prison, jail, national secrecy department and so on; mainly applicable to such special requirements as secrecy, anti-terrorism, antiriot, counter-scouting and so on.
3.8 Cell phone jammer shielding system project
The cell phone jammer shielding project is the reasonable and comprehensive project system, which utilizes various shielding equipments, attachments and technical application, i.e. it can perform the effective electronic countermeasure for public communication standard cell phone including CDMA, GSM, DCS, PHS, 3G (CDMA2000/TD-SCDMA/WCDMA) according to special requirements of customers so that function of shielding information can be achieved.
3.8.1 Large shielding project
Normally, the large project is the project with large investment scale. The so-called project means the project which is performed as per the design document, economically centrally accounted, centrally managed with the independent administrative organization and can independently realize function required by the document.
For many wrongful businesses put the ordinary civil cell phone jammer into use in such locations which has high requirements for shielding as the jail, prison and so on, the site shielding need can not be met so that effect of cell phone shielding system in many domestic prisons is not good. Although the cell phone shielding system finishes construction, it cannot work normally. Some wrongful businesses copy the managing concept of the professional manufacturer to step into the market of such locations which has high shielding requirements as the jail, prison and so on.
For the profession enterprise of researching, developing and manufacturing the cell phone shielding system, the requirements for the cell phone shielding are the same for any location where the cell phone shielding system is needed. The shielding rate of approximate 99.99% is required to be achieved. The cell phone shielding system may cost hundreds of thousands Yuan or even several million Yuan. Compared with the cell phone jammer worthy of hundreds of Yuan, the cell phone shielding system can be called the large-scale shielding project.
Currently, the cell phone jammer shielding system is mainly applicable to the jail, prison, large-scale concert hall, theater, movie center and so on.
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