With so many people using cell phones these days, one of the devices that have popped- up on the market are cell phone jammers. Be advised that cell phone jammers are usually black market devices, since using them is illegal in most municipalities.
However, for those that are tired of hearing endless cell phone conversations or constantly being interrupted by incessant cell phone ring tones, a cell phone jammer seems like the perfect device to own.
How Cell Phone Jammers Work
Cell phone jammers work in a similar way to radio jammers by sending out the same radio frequencies that cell phones operate on. Doing so creates enough interference so that a call can not connect with a cell phone. There are two types of cell phone jammers currently available. The first type are usually smaller devices that block the signals coming from cell phone towers to individual cell phones. The frequency blocked is somewhere between 800MHz and 1900MHz. Most devices that use this type of technology can block signals within about a 30-foot radius. Cell phones within this range simply show no signal.
The second type of cell phone jammer is usually much larger in size and more powerful. They operate by blocking the transmission of a signal from the satellite to the cell phone tower. Some powerful models can block cell phone transmissions within a 5 mile radius. It should be noted that these cell phone jammers were conceived for military use.
Once again, it should be noted that operating or even owning a cell phone jammer is illegal in most municipalities and specifically so in the United States. Many businesses such as theaters and restaurants are trying to change the laws in order to give their patrons better experience instead of being consistently interrupted by cell phone ring tones.
007
Now that cell phones have the capability of being used to conduct covert surveillance (yes your “own” phone), activating a jammer during proprietary conversation can insure the integrity of the meeting with no worrying if someone has used your phone (or someone elses) to monitor you.
Mentalist Traceur
Cell phone signal jammers are also a perfect way to get someone trying to make a 911 (or insert other emergency number) call to be unable to reach help when they need it. Doesn’t sound like such a wonderful peace-and-quite causing device when you actually think about it, does it? (If it still does, just imagine that you’re out and about and a loved one is trying to call you because someone is trying to break in, or is following them, or worse, and you never get any calls or messages until it’s too late because someone nearby thought their being bothered by phone activity justified jamming communications.)
Little Irene
Cell phone signal jammer can be useful around a Presidential motorcade, for example, to keep terrorists from detonating a bomb from miles away or even from outside the country. By wiring a cell phone to explosives the device can be triggered by simply placing a call to the phone, as was done in May 2002 by Palestinian militants in Tel Aviv when they targeted an Israeli fuel depot by rigging one of its fuel trucks.