Cell Phone Signal Blocker Jammer Pouch
How many meters a mobile phone signal jammer can shield is not only related to its own transmission power, but also to the distance of the base station in the environment (the base station is not limited to the large transmission towers built on the ground, but also the signal on the roof. Amplifying antennas and signal amplification distribution in some buildings), another important factor is obstacles, if it is made of metal, it will be blocked directly; if it is a solid wall of reinforced concrete, it will be attenuated by at least 10 times after penetration. Compared with Cell Phone Signal Blocker Jammer Pouch , the appearance is not particularly important, but the structure of the setting is different. From the appearance, mobile phone jammers can be divided into external antennas and built-in antennas. Because the antennas are externally installed, the external antennas occupies a larger space than the built-in antennas; it is because of the external antennas. Antenna, the effect of external antenna is more stable. cell phone jammer
The shielding range of the mobile phone signal jammer is based on the size of the Cell Phone Signal Blocker Jammer Pouch power. If the shielding range is different according to the strength of the local environmental signal during the field test, for example, the weak shielding range of the indoor signal is large, and the accessories for outdoor use are GSM base stations. Then the GSM signal is close to the outdoor shielding range! As everyone knows, 2G, 3G and 4G: Before buying, you need to know which signals you want to block. Ordinary mobile phone signals (234G) can be selectively blocked. If you only block 23G or only 34G, this is fine. There are 2.4GWIFI, 5.8GWIFI and other frequency bands adjusted before leaving the factory. Generally, ordinary signals can be quickly shielded.