Disruptor Cell Phone Frequencies Jammer

If used for the right purpose, cell phone jammers can definitely be a boon. Chatterboxes who keep talking on the phone, without taking into consideration the nature of their surroundings, can finally be kept quiet. Jammers transmit asignal of the same frequency as that of the cell phone, in a way that both the signals collide and cancel each other out. This is the basic working principle of any jamming device. Simpler devices block only one group of frequencies. Higher-end devices can block all the frequencies simultaneously. Cell phones are full-duplex devices, which means that they use two different frequencies; one for listening and the other for talking. Some basic jammers only block one of these frequencies. And the advanced jamming device not only interferes with all cell phone signals, but also interferes with many other signals. It also has a single frequency switch which can be selected according to the needs. Take full account of your needs in multiple situations

Most cell phone jammer transmit on the same radio frequency as nearby cell phones, sending a louder, more powerful signal to surrounding towers. So, when a jammer is activated, its signal immediately blocks out all of the other competing signals, with the nearby tower unable to support anything beyond this strong, manufactured signal. In other words, think of the jammer as a loud siren or horn that drowns out every conversation in its proximity. Many countries allow limited cell phone jamming, including France, India, Mexico, New Zealand and others. Nearly all these countries allow the jamming of cell phones in prisons. Some of them allow it in schools, and even theaters. Many countries with current bans are considering the use of jammers in prisons.

All of this would be solved with prison cell phone jammers. There is no reason to not jam prison grounds - guards have walkie talkies that are not affected by jammers (and they shouldn't even have phones on them anyway) so communications would not be interrupted. Jammed airspace can be engineered and tuned as to not effect areas outside the prison. Jammers can be turned off as part of protocol if an emergency is declared and outside emergency agencies need access to the prison.