To block a wifi network, you must send a signal on the same frequency as the target but stronger than the original signal.

If it is legal where you live, then the easiest way to block a wifi network is to buy a wifi jammer and turn it on close enough to your router. However, in most areas, you will have to go through the more complicated legal methods described below. Otherwise, skip ahead to the following section to learn about legal ways to prevent your neighbors from using your network and reduce the impact of neighboring networks on your network.

Wifi jammers can interfere with emergency radio communications and other important communications. Even if it is legal in your country, it is best to avoid using wifi signal jammer in densely populated areas.

Determine which frequencies you want to jam
If your area prohibits the use of wifi jammer device, you will need to take a more targeted approach. Each wireless device sends a signal on one or more frequencies. To drown out this signal, you will have to act on the same signal. Find the name of the device you want to jam or use this frequency guide.

Wifi routers with 802.11b or 802.11g standards operate on the 2.4 GHz frequency. If you cannot identify the router, this is a safe option.

Wifi routers in the 802.11a standard operate at 5 GHz.

The 802.11n standard can operate on both 2.4 and 5 GHz. You may need to interfere with both frequencies. Some modern routers with this standard can automatically change frequencies, which makes them harder to interfere with.

If you don't know what type of router you are using, try downloading an application or software designed to see what wireless networks are nearby. Some programs will determine which frequencies and channels are in use, but the free versions usually do not.

Turn on devices at the same frequency
You can block 2.4 GHz wireless signals by operating a microwave oven, another cordless phone, a Bluetooth device, and many other wireless devices. Whenever 2.4 GHz is displayed, the device will interfere with nearby 2.4 GHz networks. The impact can range from a slight slowdown to a complete loss of signal, but unfortunately, there is no way to tell what it will be in advance.

The device must broadcast the signal. For example, play music on the phone or tape the digital buttons so they are always pressed.

To improve the interference capability of a 2.4 GHz cordless phone, place your hand in the circuit and connect the antenna cable to the wire taped to the CD. If the interference is illegal, it may be illegal.

Modify your router
Modify your router to better control interference. If your wifi router operates on the same frequency, you can fine-tune its settings to cause intentional interference. Start by accessing your router's settings. Launch your Internet brow...

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Portable 4.2W 6 Antennas GSM 2G 3G 4G Cell Phone Jammer & WIFI 2.4GHz Jammer Up to 30m

The technology of mobile phones is really advanced and has been developing at a high speed, especially for the latest 4G signals, so in order to avoid the noise of 4G mobile phones, 4G mobile phone jammers are here to help you! So one of our best portable high-powered models Handheld WiFi Bluetooth jammer with 6 bands to jamming all types of Android Phones, Tablets, Smartphones, iPhones, Win Phones and more using 2G, 3G, 4G, WiMax, WIFI, and Bluetooth wireless signals are popular in 2016 and the next few years.

First of all, the wifi jammer device will effectively block all specified signals within the range, including GSM, 2G, 3G, 4G Wimax, and Wifi, and each frequency band can be turned on/off without affecting the operation of other frequency bands. 4.2W high power, the interference radius can reach 5-30 meters, depending on the signal strength and location. In addition, since it is powered by an 8000mA/H Ni-MH battery, it can be used continuously for 3 hours. The lightweight design makes it easy to carry around. Also, it has a good cooling system with a built-in heatsink and fans, so it doesn't generate high temperatures. In addition, the signal jammer power supply has an AC100-240V plug and a DC12V car charger, so it is also very convenient for you to use it in the car.

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