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Wednesday, January 20, 2016

Signal jammer

Signal Jammer

is it possible to jam cell phone signals



DAFINATION

A mobile phone jammer is an instrument used to prevent cellular phones from receiving signals from base stations.


 This signal jammer uses 800MHz frequency to operate because many cell phones are working on the same frequency. So I chose the sweeping oscillator as my VCO. It is really efficient yet may be difficult to use if you are beginner without some semi-professional RF-testing tools.



GSM800 cell phones have their frequencies separated by 45MHz exactly. So when any cell phone tries to make a call - it becomes blocked by itself! The phone talker will hear its own voice.

You can also keep in mind that this cell phone signal jammer can block all cell-based trackers which use your car GPS to track you down and record the data. Even IEDs are probably could be jammed, at least those ones controlled by cell signals.









KEY POINTS

radio jammer is any device that deliberately blocks, jams or interferes with authorized wireless communications.[1]According to the Federal Communications Commission, jammers are illegal and their use can result in large fines.



  • IT JAM THE SIGNAL OF RADIO SIGNAL.
  • PERSON ONLY HEAR ITS OWN VOICE.

  • Jamming is the disruption of radio signals through use of an over-powered signalin the same frequency range.
  • Police and the military often use jamming devices to limit or disrupt communications during hostage situations, bomb threats or when military action is underway.
  • Commercial jamming devices are available, BUT this type of equipment violates FCC regulations, frequency jammers cannot legally be sold






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