How does it work? The cellphone jammer transmits low power radio signals to cut off communications between cell phones and cell base stations. However there are people who forget to switch off their mobiles in these high profile meetings and a ring from a single phone may prove to be costly . Also there are high profile business meetings where the use of mobiles is totally banned during the duration of the meeting. Some buildings designs block radio signals by accident due to thick concrete walls or a steel skeleton. Mobile phone quad-band signal jammer for worldwide use.
Some devices send all incoming phone calls to voicemail and prevent outgoing calls. When the phone jammer is turned from on to off, all cell hand phones will automatically re-establish communications and provide full service. Cell phone alert systems are made which indicate the presence of a cell phone signal.
While the law says we cannot use a device to actively stop a cell-phone signal, no rules exist against passive cell-phone blocking. Hence jammers are installed in these locations so that there would be no ringing of any mobiles and the meeting can continue peacefully. Manufacturers are developing technology that will control a cell phone but do not actually jam the signal .
Upon activating (turning on) the signal jammer, all the nearby phones will indicate “NO NETWORK”, so you can conduct your company presentation, meeting, dinner, worship service, legal proceedings, or other important activities without being disturbed . It is often used in events where talking on the phone could be detrimental. Some businesses use wallpaper or building materials that have metal fragments inside them to block cell-phone signals from reaching inside or outside the room. While you may have seen plenty of mobile phone jammers before, this one is quite simply one of the best we have ever tested .The mobile phone jammer is a device that is used to block the mobile signals within a certain range from a few hundred meters to a few kilometers. For example, it could be banned in cricket stadiums where spectators could place their bets on phone which is totally illegal in many countries. These devices are often used in hospitals where valuable medical equipment could be affected cell signals.
Whatever the case, these powerful devices are handled with care so that it does not interfere with public regular usage of cell phones to avoid blocking emergency calls. So the antena will affect the quality of the whole blocking system.The frequent and ubiquitous reach of cell phones at every house hold made various issues to the organizations and dictating authorities. The wide use of the cell phones is now evident in restaurants, movie theaters, concerts, shopping malls and churches, however all these places are complain the deadly breach in the privacy and discomfort . It provides the security level for the radiation to people. We know the radiation of mobile jammer is realized through the antena. Two more places where these cell phone jammers are legally used are banks and jails. These cell phone jammers help the authorities and administrative sections in various ways.
In most countries, possession of a jammer is still allowed but usage in public places without prior permission from government is an offence. The jammers produced by formal enterprises will be inspected by the related department. These jammers are used for law enforcement in various private and public sub domains and also it adds the assistance to defence services by interrupting communications among the criminals and terrorists. The regulations for electromagnetic radiation protection is approved by National Environmental Protection Agency on March 11, 1988 and carried out on June 1 of the same year. These cell phone usually raised problems when they frequently invade the individual’s privacy, add hassles like academic cheating, or even aid in industrial surveillance by the competitors. Due to this interference, many a times emergency calls made to doctors, hospitals or police where being barred .. About the effects of the electromagnetic radiation, we should consider the intensity, direction and the distance.
Will all the electromagnetic radiation in various strengths affect people’s health? In fact, it’s relative to the opening time of the jammer and the people’s physical makeup. Also, these are made legal for military usage and during military operations. There are express terms about the security level of the electromagnetic radiation in China. Cell phone jamming devices or cell phone jammers is the best alternative against the expensive measures. Due to many security reasons these are particularly used in these areas to block unwanted mobile usage which are one of the main devices during theft operations.