Children don't sleep in the middle of the night, play games on mobile phones, delay rest and study, and don't listen to parents' discipline.If you want the cell phone jammer to cover a larger area, the simple and straightforward way is to use a more powerful jammer.Or is it too low to put it directly on the ground? This will cause too many obstacles in the signal transmission path, serious signal attenuation, and affect the shielding effect.If the antenna gain is only 1-2dB, then replace the antenna with a gain value of 3-5dB, and the shielding effect will be significantly improved.The answer is to look for it in two ways.

The main principle of the shielding instrument is to scramble a certain frequency band (most of the upstream frequency bands) and transmit useless signals.For example, whether the mobile phone jammer is a qualified product of a regular manufacturer, whether its working frequency band is completely correct, and whether it has a frequency bandwidth.However, if you are not connected to a WiFi network, leaving on wifi blocker can drain your battery.However, due to the influence of the communication base station near the usage scene or other factors, the shielding range may not achieve the expected effect.

More often than not, these models are able to block all sorts of signals including Cellular, Wi-Fi, GPS, Bluetooth, and Radio Communication.After the mobile phone shielding device is turned on, the effective coverage of the shielded signal is usually tens of square meters to hundreds of square meters.However, there is currently no officially published test method to study the Shielding Effectiveness (SE) of an assembled shield on a portable wireless device PCB.In a recent study, when traditional test methods were used to understand shielding requirements in battery-operated portable wireless designs, several shortcomings were identified.

As long as the shielding range of the home signal jammer can shield the child's room, the area is basically within 20 square meters.This means that high-frequency components are now crammed into very tight spaces, which in turn reduces the size of the printed circuit board (PCB) required.Currently, to enhance PCB shielding, mobile phones use two main methods - soldered perforated cans and plated covers with EMI gaskets.Then, the most reasonable installation location is to select the installation location of the mobile phone signal jammer in the examination room.Therefore, because of these two points, this most ideal location is the first to be rejected.

However, some customers will always find that after the mobile phone signal blocker in the test room are turned on, the shielding effect is not ideal in the actual use process.Analysis from the signal transmission path: The mobile phone signals in the classroom of the examination room are all remote base station signals, and are transmitted to the classroom through doors and windows.If it can be installed on the ceiling in the middle, this can achieve the effect of complete coverage with a relatively small number of points, otherwise, the installation method of hanging on the walls on both sides is used.

For a conference room of about 100-300 square meters, usually 1-2 low-power cell phone signal jammers are installed, which can basically meet the shielding effect of the entire conference room.If you want to reduce the impact on the outside world, you can install it as a directional antenna.If the conference room is above the ceiling or has a movable ceiling, then the shield can be directly installed in the ceiling or ceiling.In addition, the installation location should be determined according to the on-site environment.

For a single space of more than 300 square meters, the installation point of the shield can be selected by the method of equidistant distribution according to the length and width of the site.The mobile phone signal shielding device in the examination room is generally installed according to the original design drawings.This method is absolutely not recommended, because hidden in the desk is not only unfavorable for the heat dissipation of the mobile phone signal shield in the examination room, but if the desk is made of metal, it is even more unfavorable for signal transmission, which directly affects the shielding effect.

The middle of the wall on the side of the base station, so that the shielding effect of the shielding device can be maximized.Therefore, when choosing a home mobile phonegps blocker, you can choose one with lower power, so that the price of the jammer gps will be lower.In the construction process of most standardized test rooms, the project of installing mobile phone signal blockers in the test room is included.If you exclude the factors of poor shielding equipment selection and working performance, how to install the shielding equipment and how to choose the installation location of the shielding equipment will become the main factors affecting the shielding effect.

Most of the test methods available today were developed to identify the materials that make up the EMI enclosure.For example, the shielded signal frequency bands are all band shielded, which means that 2/3/4/5G mobile phone signals and WiFi signals can be shielded; The difference lies in the shielding range.The shielding range of the signal jammer in the examination room is generally about 100 square meters, covering the entire classroom examination room.If the shielding area is too large, it may affect the normal use of mobile phones by neighbors, and it is easy to be complained.

At this time, people always want to use some methods to expand the coverage of the shielded signal, so that the shielding effect of the mobile phone jammer can be greatly improved.Cost - So, first things first, how much would it cost you? You can get the cheapest jammers (those which can only block a very specific type of signal - mobile signal, for example) for around $30 to $60.On the other hand, they tend to work on batteries, only for a short amount of time, and cover small area alone (around the size of a person's body).There is no difference between the home mobile phone signal blocker and the test room mobile phone signal blocker in many places.

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