D-Fend Solutions EnforceAir2

The EnforceAir2 from D-Fend Solutions (Israel) is a radio-based counter-drone system. It detects drones through their radio link, identifies them and can force them to land or return by taking over the control protocol, without disturbing the link. It can be operated fixed, on vehicles, in a backpack and on ships; the fields of use range from airports and prisons through police and military to events and critical infrastructure.

The manufacturer states a detection range of 4.5 km and an effect range of 4 km; the takeover typically reaches 1.2 to 4 km depending on protocol and visibility. Coverage is 360 degrees and the frequency range 400 MHz to 6 GHz, which includes the common 2.4 and 5.8 GHz bands. Transmit power is given as +36 dBm, about 4 W. The takeover requires that the system supports the drone's protocol; drones without a radio link stay invisible to this sensor.

Because the system transmits actively, the approval note reads: use only by authorised authorities. Who may act actively against drones is narrowly fixed by law: in Poland Art. 156ze of the Aviation Law (Dz.U. 2025 item 179), in Germany hazard prevention lies with the police, with the armed forces under § 15a LuftSiG as administrative assistance. Jammers may be operated only by authorities in Germany (§ 91 TKG) and in Poland (Art. 42 of the Electronic Communications Law, Dz.U. 2024 item 1221). Operators of critical infrastructure, airports and event organisers can limit themselves to detection; radio detection touches the secrecy of telecommunications (Fernmeldegeheimnis), and its legal classification is considered open.

With radio systems, the currency of the supported protocols decides: new drone models and firmware versions call for software updates. Depending on the form, power supply, operating temperature and corrosion protection count, and for portable use weight and battery run time.