Cell phone jammer is a device used to block mobile devices from receiving signals from their base stations. Cell phone jammers were originally designed for law enforcement and military use, so they could block communication between terrorists and criminals. They’re pretty common in prisons as well, where cell phones (obviously) aren’t allowed for inmates. Once the public caught on to the technology, many people–especially employers–wanted to use it themselves, especially in large cities where it seems everyone is always on the phone.
Desktop jammers with interference signal stability, interference ability, interference range of large features. At the same time, the longer the signal antenna, the greater the range of interference.Therefore, this 6-antenna desktop jammers became the first choice for many people. Able to interfere with all the telephone bands and intercom signals, very practical.
Documents obtained by Motherboard under the Access to Information Act suggest Correctional Service Canada looked into the use of cell phone jamming technologies in March 2012, after the agency reported over 200 illegal cell phones being confiscated from federal prisons in three years.
These smartphone vigilantes have sprung up before in heavy traffic areas on the roads in an effort to keep commuters off their phones while driving. The problem is that jammers tend to be wildly unpredictable in both output power and range. So while you may think you’re keeping the public safe from texting drivers, prisoners conspiring within prisons and annoying theater goers, you might very well also be keeping others from dialing 9-1-1. And then there’s also the hefty fines imposed on violators and overall legality of RF jamming too. “The use of “cell jammers” or similar devices designed to intentionally block, jam, or interfere with authorized radio communications is a violation of federal law.” according to the FCC. They go onto say “These devices pose serious risks to critical public safety communications, and can prevent you and others from making 9-1-1 and other emergency calls. Jammers can also interfere with law enforcement communications.“