The main purpose of mobile phone signal jammer is to interfere with all standard mobile phone signals of operators, including 2G, 3G, 4G and 5g signals. The frequency band covered at least includes 700MHz, 800MHz, 900MHz, 1800MHz, 1900MHz, 2100mhz, 2300mhz, 2600mhz, 3400mhz, 3500MHz, 4800mhz, etc. in addition, it also includes the WiFi 2 4G (including Bluetooth), WiFi 5 8G。 Many customers have reported that after turning on the mobile phone signal jammer in some places of use, they always feel that the interference distance for the mobile phone is too short and complain that the interference range of the mobile phone signal is too small. Therefore, they put forward to us that they hope to increase and strengthen the power of the mobile phone signal jammer in order to greatly improve the range of signal interference.

So, does the larger the transmission power of the mobile phone signal jammer, the greater the signal interference distance and the better the interference effect? Theoretically speaking, this is true for the existing conventional types of work. But the problem is: the shielded signal transmitted by the mobile phone signal jammer is of course a radio frequency wireless signal, and the increase of the transmission power of the radio frequency wireless signal is not simply to update a few separate power amplifier devices. To improve the transmission power, it is necessary to select the power amplifier with higher power output, and design the power amplifier circuit specially for it. Even the power improvement needs to be promoted by levels. The cost of RF devices will increase n times with the increase of power load.

At the same time, with the increase of power, the heat dissipation of mobile phone signal jammer itself needs to be redesigned, larger radiator and ventilation and heat dissipation auxiliary measures need to be taken, which will increase the appearance size, weight and cost of the equipment.

In fact, if you want to improve the interference effect of mobile phone signal jammer, there is a relatively simple, fast and low-cost scheme, that is to choose a higher gain antenna. Because the interference signal of the mobile phone signal jammer must be transmitted through the antenna after all. For example, the original antenna has only 2dB gain. If it is replaced with an antenna with 5 dB gain value, it can be known from the calculation method of RF power that when the gain value increases by 3 dB, it is equivalent to doubling the transmission power. This method is actually very practical. Customers who want to double the power quickly can learn and use it now. By replacing a set of high gain antenna, the shielding effect of mobile phone signal jammer can be greatly improved!