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Can the cell phone signal jammer interfere with mobile phones 1Km away?

Can the cell phone signal jammer interfere with mobile phones 1Km away?

  • 2022-10-06

cell phone signal jammer

When some customers are in pre-sales consultation, in terms of technical indicators, they are usually most concerned about the effective interference distance of the cell phone signal jammer. What’s more, they will directly require that the larger the interference distance, the better, and clearly express the interference distance to the existing interference equipment. inadequate attitude. It is expected that we, as a manufacturer, can produce and provide more power and wider range of interference products for them. There are also customers who will directly put forward the expected value of the interference distance, for example, they want the interference distance to reach more than 1Km. So the question is, under the existing technical conditions, can the cell phone signal jammer interfere with mobile phones beyond 1Km?

If the answer is based on whether such a requirement can be achieved, it can be achieved in terms of the technical principle of the product and the realization method of technical means. If you want to make the interference distance of the cell phone signal jammer reach or exceed 1Km, it is mainly from the Start with these:

1. Increase the transmission power of the cell phone signal jammer: the current mainstream jamming products, the maximum output power of the radio frequency port in a single frequency band is generally only 100W-200W; the transmission distance of the jamming signal with this power intensity is about 200W. -500 meters range. If it is to further increase the RF output power, it will definitely help to improve the interference distance.

2. Configure the full line of higher gain for the cell phone signal jammer: Now the antenna configured for the high-power cell phone signal jammer is divided into an omnidirectional antenna and a directional antenna. The gain value of the omnidirectional antenna is usually 6-8dBi, and the gain value of the directional antenna is usually 12-18dBi, according to the power conversion formula, every 3dBi increase in the gain of the antenna is equivalent to doubling the RF power. It can be seen that choosing a higher gain value for the antenna of each mobile phone frequency band will inevitably improve the interference effect and interference distance.

3. When installing and using cell phone signal jammers, especially for long-distance transmission and wide-ranging interference signal coverage, the antenna must be erected high enough. Because only by erecting the antenna to a certain height, can it be ensured to avoid obstacles in the signal transmission path, thereby reducing unnecessary attenuation in the process of signal propagation. Just like the cell towers of cell phone base stations, the impact of installation height on its coverage is critical!

If the above three points are fully achieved, it is possible for the cell phone signal jammer to interfere with the mobile phone beyond 1Km. However, there are very few that can actually be implemented in this way. This is because these three points are not generally difficult to implement in specific operations. For example, the scheme of increasing the transmit power mentioned in point 1 will bring a high increase in the production cost of the interference device, and at the same time, it will further increase the size and weight of the device, and further increase the heat dissipation requirements. In this way, it will also bring about a sharp increase in power consumption. Another example is the need to install the antenna to a sufficient height as mentioned in point 3, which is obviously unrealistic for ordinary users, who do not have the ability to install the cell phone signal jammer to a height like a mobile phone base station.

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