30-11-2009, 12:20 PM
30-11-2009, 02:56 PM
[attachment=537]
A GSM Jammer 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. 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.cell phone jammers block cell phone use by sending out radio waves along the same frequencies that cellular phones use. This causes enough interference with the communication between cell phones and towers to render the phones unusable. On most retail phones, the network would simply appear out of range. Most cell phones use different bands to send and receive communications from towers (called full duplexing). Jammers can work by either disrupting phone to tower frequencies or tower to phone frequencies. Actually it needs less energy to disrupt signal from tower to mobile phone
read more
http://qrz.ru/schemes/contribute/securit...jammer.pdf
http://en.wikipediawiki/Mobile_phone_jammer
i hope its useful if need more info please indicate in reply
A GSM Jammer 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. 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.cell phone jammers block cell phone use by sending out radio waves along the same frequencies that cellular phones use. This causes enough interference with the communication between cell phones and towers to render the phones unusable. On most retail phones, the network would simply appear out of range. Most cell phones use different bands to send and receive communications from towers (called full duplexing). Jammers can work by either disrupting phone to tower frequencies or tower to phone frequencies. Actually it needs less energy to disrupt signal from tower to mobile phone
read more
http://qrz.ru/schemes/contribute/securit...jammer.pdf
http://en.wikipediawiki/Mobile_phone_jammer
i hope its useful if need more info please indicate in reply
19-03-2011, 12:03 AM
full seminar report about mobile detection and jamming
14-04-2011, 11:47 AM
hi
you can get the detail on mobile-detection-and-jamming in this page
http://studentbank.in/report-mobile-dete...nd-jamming
you can get the detail on mobile-detection-and-jamming in this page
http://studentbank.in/report-mobile-dete...nd-jamming