The obvious advantages of the car shielding device are:
1. The number of modules of the shielding device can be installed more, and some frequency bands with strong signals can be subdivided into several sections, so that narrow bands can be used to suppress the shielding device to improve the shielding effect of the shielding device; the portable frequency jammer is because of its appearance Due to size and weight constraints, the number of selected modules is usually the most streamlined;
2. The height of the antenna stand: the antenna stand is on the roof, and the height of the antenna is much better than that of the portable frequency jammer, which is less than 1 meter away from the ground, and the coverage will be larger;
3. Power supply is guaranteed: the vehicle shielding device modified by vehicle power (power generation) can work continuously for a long time without worrying about power supply problems; portable frequency jammers are generally powered by their own built-in batteries, and the working time of the battery is limited after all , once the power is exhausted, you must first solve the problem of AC power supply or how to charge.
4. The module power of the shielding instrument is large enough: because the above-mentioned power supply is guaranteed, then the energy consumption ratio of the shielding instrument should not be overly worried, and modules with higher output power can be selected, such as 100W or more for each module;
5. The device starts quickly: when there is a task, you can turn on the car shielding device at any time with one key, without the need for other equipment connection or power supply connection and other preparations. Portable frequency jammers usually need to select the location of the equipment to be erected after arriving at the scene, screw on multiple antennas and then select the power supply circuit.
Of course, the biggest advantage of portable signal jammer over car shielding devices is that they are portable. One person can transfer and consign the device at will, and the device is small and convenient for concealment. It does not have obvious appearance features like car shielding devices.
