Introduction
History
How Mobile Jammer work?
How Intelligent Jammer works?
Block Diagram.
Circuit Diagram
Advantages
Disadvantages
Application
Future scope of Jamming Technology
Conclusion
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A mobile phone jammer is an instrument used to
prevent cellular phones from receiving signals
from base stations.
It is a device that transmit signal on the same
frequency at which the GSM system operates, the
jamming success when the mobile phones in the area
where the jammer is located are disabled.
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Mobile Jammer were originally developed for law
enforcement and the military to interrupt
communications by criminals and terrorists.
This device can is used by bomb squad for diffusing
bombs. This is because most of the bombs now a day
are triggered by the use of cell phones.
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A jamming device transmits - same radio
frequencies of greater power as the cell phone,
disrupting the communication between the phone
and the cell-phone base station in the tower. It's a
called a denial-of-service attack.
How Mobile jammer works
This causes interference with communication of
cell phones and towers to render the phones
unusable. On most phones, the network would be
out of range.
So Jammers work by either disrupting phone to
tower freq.. or tower to phone frequencies.
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An intelligent jammer has a detector ckt in it. It is this unitthat detect the presence of a cell phone.
When the detector ckt is triggered it automatically triggersthe jammer ckt.
After the jammer is on the communication is blocked andthe cell phone will be inactive.
The detector is implemented with an LED which is usedto indicate the presence of a cell phone in its range.
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To maintain the complete silence in library and lecture hall
To avoid fraud in examination hall
To avoid disturbance in class room
For providing security in business conference, board of directors rooms, seminars, etc.,
For providing calm and peaceful atmosphere in Hospitals
Church/Mosques/Cathedral/Temple/Religious establishment
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Now a day, copying in examination, wiretap, gas station outburst, and medical negligence are taking place due to mobile phones.
Other important use is that this devise can be used by bomb squad for diffusing bombs. This is because most of the bombs now a day are triggered by the use of cell phones.
You are paying for the usage of a specific service. Use of jammers might prevent you from using a service after paying for that
You cannot call the emergency help-line numbers.
This system may be utilized by the criminals to take advantage of others.
While the law clearly prohibits using a device to actively disrupt a cell-phone signal, and the lawbreakers will be given severe penalty
Companies are working on devices thatcontrol a cell phone but do not "jam thesignal.
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Every technology has good aspect as well as badaspect the important thing is, how we are usingit.
Cell phone jammers are very useful to thesociety from the anti-social elements. We cansave our national leaders. we can restrict thecommunication network between the anti-social elements by using the Mobile jammers.Cell phone jammers prevent the students fromcarrying cell phones to the colleges.
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