By sending the same radio frequency as the mobile phone operates, the cell phone signal blocker works like a radio signal blocker. Doing so will cause enough interference to make it impossible to connect the call to the phone. There are currently two types of cell phone blockers. The first category is usually smaller devices, used to block the signals sent from the cell phone tower to each cell phone. The lock frequency is between 800MHz and 1900MHz. Most devices using this technology can block signals within a 30-foot radius. Mobile phones within this range have no signal at all.
Now you can politely tell them to shut up and leave, or you can buy a cell phone blocker and turn it off by yourself. Unfortunately, because many people (especially prison guards) want to believe that a new technological device can solve their problems, they continue to gain momentum. A group of prison guards not only submitted a regulatory petition to the FCC, but also supported a bill requiring the FCC to authorize interference from prison cell phones.
In the four Monterrey churches, pocket-sized Israeli-made cell phone blocker were carefully placed between Israeli paintings and saint statues. Japan allows the installation of jammers in public places such as theaters and concert halls, but only if they must obtain a license issued by the government. Last week, the French Minister of Industry approved the decision to allow cinemas, concert halls and theaters to be installed, provided that emergency calls can be made.
Tokyo-based Medic Inc. sold thousands of Wave Wall gsm jammers before the government stepped in and regulated its use in live performance venues. The Catholic Margarita Escobedo (Margarita Escobedo) attends church at least twice a week and is a volunteer at the San Gennaro Church. She said that she wanted to accept jammers in the parish, where mobile phones became more and more popular. Annoying. GPS blocking programs are usually small devices that connect to the lighter port of the vehicle and emit radio signals, which can cause excessive power or flood weak signals such as GPS or other signals.