The Dangers of Using a Cell Phone Jammer on Public TransportEarlier this week, a Philadelphia television station reported that a man had used a cell phone jammer on his commute to work. He told NBC10 that people talking on cell phones on public transportation were “rude and annoying.” As the story circulated online, the word “cell phone jammer” ranked high among the top 10 most popular searches on Google Trends, up there with news about the Super Tuesday primaries and Lindsay Lohan’s performance on “SNL.”The SCL-CPJ is a dual-band cell phone jammer designed to block mobile communication within a specified area. It works by capturing noise from its environment and mixing it with a tuning signal. The transmitter’s radio frequency transmitter module contains a voltage controlled oscillator, power amplifier, and antenna connectors. The antenna radiates the jamming signal into the surrounding space, silenting all mobile phones within its radius.Although it may seem like a spy-film gadget, signal jammers are actually quite common and useful. You can use them both as a defensive and offensive weapon. For instance, if you’re in the middle of a fight, using a jammer on your cell phone might just get you in trouble. If you’re unsure whether a cell phone jammer would be beneficial, check with the authorities before attempting to use one. The consequences of illegal use can be substantial. If you’re caught using a phone jammer for this purpose, you could be sent to jail.While it’s legal to use a cell phone jammer for personal use, it’s illegal to use it on public transport. It’s also illegal in the United States. Only local law enforcement agencies can legally operate a mobile phone jammer. However, the use of such a device may result in a hefty monetary fine. Moreover, the device may interfere with emergency calls made by passengers on public transport. A Florida man recently got hit with a massive fine for using a jammer on public transport.While it’s important to choose the right device for your needs, you should also consider the location of the jammer. Depending on the location, a cell phone jammer may be useful in preventing emergency calls from reaching emergency services. In such a case, the jammer may interfere with an ambulance’s siren, which may interfere with the conversation and even interrupt a conversation. However, it’s important to check the location of the jammer before using it on a cell phone.When using a cell phone jammer, keep in mind that its range will depend on its power. Using low-power jammers will only block calls within 30 feet (9m) of the device, while higher-powered units can disrupt service up to 1 mile away. Some cell phone jammers are even disguised as cell phones. They are small enough to be carried in a briefcase or mounted on a car. So, the right cell phone jammer can be used to protect the people in your convoy or neighborhood.Jammers are effective in preventing illegal activities. They can be used in prisons to prevent unwanted calls between prisoners, preventing them from committing crimes and engaging in illegal activities. Jammers can even be used to protect educational institutions, blocking signals across an entire campus. That can prevent a cell phone spy from monitoring the conversation. That makes for a hero in the modern world. The United Kingdom is considering using phone jammers in its prisons.