06-09-2016, 12:14 PM
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INTRODUCTION
A GSM Jammer is a device that transmit signal on the same frequency at witch the
GSM system operates, the jamming success when the mobile phones in the area where
the jammer is located are disabled.
Communication jamming devices were first developed and used by military. Where
tactical commanders use RF communications to exercise control of their forces, an enemy
has interest in those communications. This interest comes from the fundamental area of
denying the successful transport of the information from the sender to the receiver.
Nowadays the mobile jammer devices are becoming civilian products rather than
electronic warfare devices, since with the increasing number of the mobile phone users
the need to disable mobile phones in specific places where the ringing of cell phone
would be disruptive has increased. These places include worship places, university
lecture rooms, libraries, concert halls, meeting rooms, and other places where silence is
appreciated.
Mosques are example for the places were mobile jammer would be a great solution,
although mosques asks politely from prayers to disable their mobile phone during the
prayer ,see figure (1), some people forget and the ringing phone of their mobile phone
become very annoying specially during the praying time.