Some meetings are not allowed to use mobile phones. Cell Phone Frequency Jammer Circuit Can block mobile phones. Widely used to prevent the use of telephones. The jammer equipped with various antennas is a directional antenna mobile phone jammer. It has the characteristics of completely interfering with mobile phones. If you are looking for a signal hiding device that can shield various signals, you can buy a phone jammer here. High-quality directional jammers can be obtained here. Jammers are divided into directional antennas and omnidirectional antennas. The direction of shielding the mobile phone signal is different. You can choose a directional antenna cell phone jammer that helps to interfere with 4G phones. You need to use the signal jamming device of the 4G mobile phone. This is a very Powerful device. Adjustable signal blocker. cell phone jammer
Different environmental interference effects are also different. The interference range in open areas is greater than in areas with many buildings. This is why the measured interference radius is usually better than the actual range. Because the test is in an open place. Since the signal will be blocked/interfered by stone walls, the grid forms a Faraday cage (including "fake" lead windows) and tin foil insulation and other metals, which interfere with indoor coverage areas, and the reliability of the equipment will be very low. This means that if you use Cell Phone Frequency Jammer Circuit indoors, the wall may block the signal and prevent it from interfering with the signal in another room. There are many necessary tests, such as battery life, transmission frequency, etc., including interference radius testing. Because these devices are often tested in open areas, manufacturers always believe that the test results are more effective than actual conditions. You know that buildings and various concrete structures can interfere with signal transmission. Most of us live in big cities, surrounded by skyscrapers. The signal strength of the local mobile phone is also an influencing factor. So, don’t be surprised if your interfering device cannot block calls within 30 meters.
