Radio jammers: the gap between theory and reality

　　The design concept of radio signal jammers is to disrupt the normal operation of drones or even crash them by emitting radio noise to cut off the signal connection between drones and their operators. Wifi jammer This theory seems simple, but it is challenging to implement effectively in complex battlefield environments. In actual combat, the attack paths and patterns of drones are often unpredictable, and the Russian-designed jammers have failed to adapt to these changes.GPS jammer

　　An angry Russian blogger exposed the problems of a $2,400 multi-frequency radio jammer on social media. The design errors of the device made it almost impossible to fight against drones. GSM jammerThe blogger emphasized that these jammers gave frontline soldiers an unrealistic sense of security, causing them to die in combat. What's more, the blogger pointed out that this is not the first time that similar jammers have failed on the Ukrainian battlefield. The Russian jammers stolen by Ukrainian troops a few months ago were also proven to be almost useless.

Design flaws: antennas pointing to the sky and overheated equipment

　　The blogger analyzed the various design errors of this device in detail. One of the most obvious problems is the improper direction of the antenna. Ideally, the antenna of the jammer should be able to broadcast radio noise in multiple directions to deal with drone threats from all directions. However, the antenna of this jammer is mostly fixed upward, which makes it only work in a specific and narrow airspace. Ukrainian drones, especially low-flying FPV (first-person perspective) drones, often attack from the side, directly bypassing the effective range of the jammer.

　　The fixedness of the antenna further exacerbates this problem. For jamming FPV drones, the device designers seem to assume that the drone will appear "precisely" above the jammer, however, the reality on the battlefield is far from this. The attack methods of FPV drones are flexible and varied, and this antenna design obviously fails to take this into account.