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source:Industry News release time:2021-10-12 Article author:sznbone Popular:Prison Jamming system
What are the misunderstandings in the installation of mobile phone signal jammers in detention centers?
One, the greater the power, the better
1. The host frequency output is not accurate, frequency drifts, and bandwidth is too wide, which wastes power and causes interference to the base station.
2. The shielding efficiency of simple frequency sweeping power suppression is not high, and the radiation produced is relatively large.
3, the power is imaginary, and the publicity effect is exaggerated, so that the nominal power has no actual reference value.
4. Power is the foundation, and technology is shutdown. If you fight for power, you might as well find the right methods and techniques.
2. Using directional antennas can avoid interference
1. There is still a certain transmitted signal strength outside the directional angle of the directional antenna, but it is much lower than the main lobe, and it is not completely directional.
2, the reflection of the building will still cause interference to the outside world.
3. The frequency drift of the host computer will seriously affect the base station and cause external interference.
4. TD full-time shielding interference must exist.
Three, high-power equipment has large radiation, and low-power radiation is small
1. High-power application outdoor antenna function, its action distance is long, shielding coverage is large, shielding signal is uniform, and radiation is very small.
2. If the low-power device does not use multiple antennas for long-distance shielding, but instead is arranged in a centralized manner or 5 antennas are used together, the radiation power generated by it will be higher than 10 microwatts/square centimeter, and the short-distance radiation will definitely be Severely exceeded.
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