Mobile phones in schools. If you’re a teacher, school staffer, or a parent, you’ve likely got six hundred opinions about this very topic, and you will have had six hundred arguments about it this week. In Australia, push has come to shove, and several states have banned the use of mobile phones during school hours entirely. Others are contemplating doing the same.
In the state of New South Wales, the current opposition party has made it clear it will implement a ban if elected. Wildly, the party wants to use mobile phone jamming technology to enforce this ban whether students intend to comply or not. Let’s take a look at how jammers work in theory, and explore why using them in schools would be madness in practice.
Cellular Jamming 101
In general, mobile phone jammers work in a relatively simple fashion. They simply random noise broadcast radio frequency signals on the same frequencies used by cellular networks. If the signal from the jammer is powerful enough, it will drown out the signals from cellular base stations, and stop phones from making contact with the network. Typically, broadcasting noise at high power across cell phone channels is all that’s required to successfully jam all communication.
You could make a cell phone jammer yourself, but you really shouldn’t.
Depending on the amount of power you put out, and the antennas you use, you can vary the area affected by your jammer. Of course, measuring this area i ..
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