how does a cell phone jammer work?
The working principle of a mobile cell phone jammer is similar to that of a radio jammer, the signal it sends out is the same as the working frequency of the mobile phone. Doing so will cause enough interference to cause the call to fail to connect to the phone. There are currently two types of cell phone jammers. The first category is usually smaller devices that block signals sent from cell phone towers to individual cell phones. 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 will not display any signal at all.
Now, you can politely tell them to shut up and leave, or you can buy a cell phone blocker and shut up yourself. Regrettably, they continue to gather momentum because many people (especially prison guards) want to believe that a new technological device can solve their problems. Not only have a group of prison guards submitted a rulemaking petition to the FCC, but they are supporting a bill requiring the FCC to authorize interference from cell phones in prisons.
In the four Monterrey churches, Israeli-made cellphone jammers, the size of paperbacks, were carefully placed between the paintings of the virgins and the statues of the saints. Japan allows the installation of jammers in public places such as theaters and concert halls, but only if they obtain a permit 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 cell phone jammers before the government stepped in and regulated its use in the field. The Catholic Margarita Escobedo goes to church at least twice a week and volunteers at San Genaro Church. She said that she wanted to welcome human interference in the diocese, because cell phones there were becoming annoying. GPS jammers are usually small devices that can be plugged into the lightest port of the vehicle and send out radio signals, which can cause excessive power or overwhelm weak signals such as GPS or other signals.