Is there any mobile phone jammer that can block the distance of more than 1Km?

Some outdoor application places generally choose high-power mobile phone jammers, such places include but are not limited to: prison farms, oil depots, power stations, gas storage stations, mining areas, etc. Their common characteristics are: a wide area, a large open area, and a large-scale building structure inside. When the above-mentioned units choose high-power mobile phone jammers, they often pay attention to one point: it is hoped that the shielding distance of the shielding equipment will be as large as possible. Effects that override the entire unit. Then the question arises: what is the maximum shielding distance of the existing high-power mobile phone jammers? Is there any shielding device that can shield distances above 1Km?

What we are discussing here is specifically the shielding distance for mobile phone signals. Check and compare the product information of various high-power mobile phone jammer manufacturers. Even if the power is 100-200W, its nominal effective shielding distance is generally 200-500 meters. Almost no manufacturer can achieve a nominal value of effective shielding distance above 1Km. Why? There are two main reasons. The first is the selection of RF power amplifier devices. The maximum power of the mainstream RF power amplifier devices on the market usually can only reach 200W. No matter how high the power is, it is possible that the shipments are too small, the cost of the device is too high, or special customization is required from the power amplifier manufacturer. This has caused manufacturers of high-power mobile phone jammers to give up choosing such ultra-high-power power amplifiers due to cost issues. The second reason is that the current mobile phone base stations are very densely deployed, especially in the main urban area of the city, there will be at least two or even more mobile phone base stations within a randomly selected 1Km range. We should all know that the shielding distance of mobile phone signals depends on the distance between the mobile phone jammer and the mobile phone base station, and the relationship between the two is inversely proportional.

Through the above analysis, we can know that the high-power mobile phone jammers that can be selected now have a nominal shielding distance of only about 500 meters at most. Coverage distance of more than 1Km. However, if it is in a sparsely populated area in the wild, and the base station construction distance is several kilometers apart, it is possible that a single set of high-power mobile phone jammers will have a coverage distance of 1Km.