Only use cell phone jammer in legal ways

With the development of communication technology, cell phones have become an indispensible part of modern life. It's great to be able to call anyone at anytime. Unfortunately, restaurants, cafes, libraries, churches and many other public places suffer from the widespread mobile phones due to the sudden disturbances of cell phones. Because not every of the cell phone users know when to stop talking. Recently, more and more people grumble that the mobile phones are annoying that they are ringing all the time. While we are grumbling, some of us turn to cell phone jammer for help. They found such palm-sized devices can easily “silent” all cell phones in its shielding ranges. 
 

Why a mobile phone jamming blocker can effectively block cell phones? Cell phone signal jammer is a kind of device used to prevent mobile devices from receiving signals from base stations. Originally designed for law enforcement and military use, phone signal jamming blockers are generally applied for the security purpose that they can prevent the terrorist attacks. How does a cell phone jamming blocker work? In all, they send radio waves in the same frequencies that cell phones use via antennas. This causes enough interference to make mobile phones within the shielding range of a cell phone blocker. There is a trend that the latest cell phone signal jamming devices are designed in palm-sized units and often disguised as a pack of cigarettes.

Why more and more people adopt this extreme way by using mobile phone jammers to disable other’s phones? Think about it in this way. You're sitting in a cafe enjoying the afternoon tea with your intimate friends. Suddenly, a stranger's voice pitches higher and floats across the room. He is talking out loud with by his phones, which is noisy enough to spoil your good mood. What an awful nuisance! Such matters often happen in many other places, for example churches, cinemas, libraries, as well as various public places. Assume, someone’s phone rings all the time when you are praying earnestly in the church, or someone next to you talking out loud by his mobile phone while you are enjoying a new movie, or phones rings now and then when you are carrying a commercial negotiation with a very important customer, what will you do? Undoubtedly, you must be extremely angry. As you’ve known that a portable cell phone jamming blocker can easily help you out of the disturbances, will you turn on a mobile phone signal jammer? Maybe, you can think in another way. How would you react if someone used a cell phone jammer on you while you are having a phone call with your boy friend or girl friend? So, before you turning on a cell phone blocker, you need to think it twice. Don’t forget that you can only use phone jammers in legal ways.

Before you buying a cell phone blocker

Have you ever entered an area where your cell phone indicates "No Service"? You might be in a location where a cell phone blocker has been installed to stop the working of the cell phones. It is very troublesome that the phone rings everywhere in the modern life. The extensive popularity of cell phones brings a lot of disturbances to us, especially in the places where absolute silence is required. This accelerates the appearance of cell phone blocker.

There are four main types of cell phone signal jammer: handheld phone signal jammer, remote control cell phone jammer, high power mobile phone jammer and professional long range phone jamming blockers. Handheld jamming device is always the portable one. It comes with compact size and lightweight, which allows it to be easily put inside one’s pocket or carry-on bag. We also have a wide range of handheld cell phone jammers with different jamming range, which can disable all types of cellular signals including the new 3G band. Most of the ordinary handheld phone jammers offer isolating radius about 20 meters. They come with rechargeable Li-Ion battery, an AC charge and a car charger. The handheld mobile phone jammer is specially designed for ordinary customers. Remote control cell phone jammer is powered via dual voltage mains power supply (supplied). The remote control supplied with the cell phone jammer can control the power output in stages up to 10 watts as well as turning the jammer on and off. The high power cell phone jamming blocker owns strong ability in blocking the signals of different frequencies at the same time or separately. It is designed for companies and public places, such as libraries, cinemas, theaters, etc. Now, come to the professional long range jamming device. It is a kind of jammer with ultra high power. Professional long range cell phone jammer is specially designed for prisons and other sensitive locations such as military and government facilities.

There is something you need to know before buying a cell phone blocker. First, make sure the network frequency of your location. For example, in North America, GSM operates on the primary mobile communication bands 850 MHz and 1900 MHz. In Africa, Europe, Middle East and Asia, most of the areas use 900 MHz and 1800 MHz bands. Also, you need to make sure your local communications service providers. In America, the six largest providers are Verizon (GSM CDMA CDMA2000 LTE, etc), AT&T (GSM UMTS WCDMA, etc), Sprint (CDMA, iDEN), T-Mobile USA (GSM UMTS WCDMA, etc), TracFone Wireless, and MetroPCS. So you should check it through the Internet before you buy a mobile phone signal jammer so that it can give you comprehensive information on the frequency Verizon of your area. After that, you can easily find the right one for yourself.

Making the selection of a phone blocker easier

Nowadays, the wide popularity of cell phones brings us great convenience. On the other hand, cell phones are disturbing to some extent. We are always bothered by other's sudden phone rings while we are devoting our mind in doing something, for example, when we are lost ourselves in reading an interesting book in a library, a sudden phone call may spoil everything. When we are doing a research program, an unexpected mobile ring may mess up our train of thought. Then we began to turn to phone blockers for help. The wide spread of phone signal jamming devices indicate that they have become necessities of modern life.

Phone blocker is a device which can be used to prevent cell phones from receiving signals from their base stations. It can effectively disable cell phones from being used in locations where the use of cell phones is potentially disruptive. It works by sending out radio waves in the same frequencies as the mobile phones so as to interfere the normally operation of the cell phones. According to the purpose of application, the phone signal jamming devices can be classified in four types, including portable phone jammer, desktop phone jammer, wall mounted phone jammer and vehicle-mounted phonejammer. Mobile phone jammers are the ultimate solution of unexpected mobile phone use, which can be seen everywhere, like factories, meeting rooms, conferences, seminars, libraries, cinemas, religious places, public transport, concert halls, restaurants and educational institutions etc.

How to choose a right phone blocker seems not easy. Firstly, you need to know the network frequency of your location. For example, in North America, GSM operates on the primary mobile communication bands 850 MHz and 1900 MHz. In Africa, Europe, Middle East and Asia, most of the areas use 900 MHz and 1800 MHz bands. After knowing that, you should make sure your local communications service providers. In America, the six largest providers are Verizon (GSM CDMA CDMA2000 LTE, etc), AT&T (GSM UMTS WCDMA, etc), Sprint (CDMA, iDEN), T-Mobile USA (GSM UMTS WCDMA, etc), TracFone Wireless, and MetroPCS. So you should check it through the Internet before you equip yourself a phone signal jammer so that you could choose a right one on the frequency Verizon of your area. Last but not least, please figure out the jamming range you require, as well as the purpose of your application. If you plan to apply it in a no-too-big zone, such as classroom, a general portable type is quite enough. But if you want to apply it in a 10000 capacity theatre center, you have to pay more for a high capacity mobile phone jamming device offering ultra wide jamming range.

Why the GPS signal blockers bring so many bad effects?

GPS signal jammer can cause many problems. According to the report that a GPS based landing system at Newark Liberty International Airport malfunctioned twice a day by the portable GPS signal jamming device of a driver on the nearby highway who did this to avoid paying tolls on outbound and return journeys. It happens that there is a similar case, A New Jersey truck driver GPS jammer use a GPS signal jammer as a way to prevent his boss from tracking his locations through a GPS tracking device installed in the truck during a visit to Newark, New Jersey's Liberty International Airport. Due to his GPS signal jammer, it seriously interfered with the precision navigation system of the Newark airport.

A research tells that GPS signal blocker poses significant threats to mobile phone systems, parts of the electrical grid, and the safety of drivers. Many GPS signal jamming devices may disrupt the operation of cell phones. Once there is any emergency and the drivers cannot call for help at the first time, the consequences would be unimaginable. There has also been an emerging threat from more powerful GPS "spoofing" systems. GPS spoofing attacks can provide both inaccurate location and time information, potentially creating much larger problems than a dropped call. There have been incidents where trucks carrying high value goods have been hijacked.

Why the GPS signal blockers bring so many bad effects? You should be told that GPS jamming devices do not only scupper the operation of satellite navigation systems within a certain area. It can also disrupt the reception of the atomic-clock-based timing signals from GPS satellites. These signals are used by financial institutions to time stamp transactions and by utility companies to synchronize power grid operations. Once these signals are blocked by the jamming devices, it will cause enormously loss.

It is not easy to sweep the flooded private GPS signal jammers. The government's approach has been to warn the public, identify any websites advertising the sale of GPS jamming devices, prohibit GPS blocker importation, and fine anyone selling or using them. In most part of the world, there are restricted laws to deal with those who use, buy, or sell jammers. For example, in the United States, anyone who breaks the law by using, buying, or selling GPS blockers will be subjected to heavy fines, even be put into prisons. More, in European countries, people who can own a jammer as long as they don’t use it. Since there are restrict law against GPS signal blocker and the government has taken measures to deal with the wide use of private GPS signal jammers, this issue remains seriously. Continuing efforts against the GPS jammer are required.

The development of GPS jammer

A few months ago, the Federal Communications Commission took its first enforcement action against a driver by fining a New Jersey man for using a GPS jammer in his company truck. This man was trying to use a GPS signal jammer as a way to prevent his boss from tracking his locations through a GPS tracking device installed in the truck. Due to his GPS blocker, it seriously interfered with the precision navigation system of the Newark airport. Nowadays, as planes and airports rely more and more on GPS signals, it will maintain at least half of its radar network as a backup system against things like GPS interference from jammers. For pilots, the loss of a GPS signal will affect the normal operation of the flight, often using a more traditional and different technology with less precision than that offered by GPS, which adds risk.

When it comes to GPS tracking devices, we are not new to them. They were invented in 1960s by the US army. Now, they have board applications in every aspect of our daily life, which help us a lot in positioning. It plays an important role in vehicle autonomous navigation. It can be a reliable guide for individual travelers and outdoor explorers. It can ensure the vehicle tracking and intelligent transport management. It is also used in ships and planes as navigators. Those GPS devices are most commonly applied in cars, which play a key role in automobile navigation as well as finding the lost pets and cars. Nowadays, GPS plays an important role in vehicle autonomous navigation. Since people are used to install GPS tracking devices in cars, we’ve heard that more and more companies are tracking their vehicles via GPS to make sure the drivers aren't slacking off. Then, private car owners began to install GPS signal jammer for the security purpose.

There are many types of GPS jammers. Among them, the most popular type is the cigarette lighter GPS signal blocker, which are mini jammers connected to the ignition system of vehicle. Besides, full band GPS blocker, car GPS signal jammer, portable GPS signal blocker, remote control GPS jammer, waterproof GPS signal jamming device are also occupying certain market shares. In all, single-function GPS jammer only stops the GPS devices from tracking the vehicles. Compared with single-function GPS jammers, the multi-functional ones enjoy stronger capabilities. They can block the signals of GPS, Wi-Fi, cell phones even the audio devices at the same time. Whether a portable easy-operate GPS signal blocker or a large volume multi-functional GPS jammer, it’s up to you. It is always determined by your requirements. You should be told that if you are a general user, a portable GPS signal jamming device is your preferred choice.