Direct proof of use
The AN/TPQ-36 Firefinder is directly documented in Ukrainian service in the 2014 Russia-Ukraine War through U.S. transfer records, Ukrainian battlefield reporting, and wartime assistance releases. The U.S. Army reported that two AN/TPQ-36 radar systems were delivered to Ukraine at Lviv on November 14, 2015, after a Ukrainian request for counter-battery capability against rocket and artillery attacks.
Ukrainian battlefield reporting later documented operational use. In May 2023, ArmyInform reported that a Ukrainian naval artillery brigade unit in Kherson Oblast used AN/TPQ-36 around the clock to detect Russian artillery, rocket-launcher, and mortar firing positions and help Ukrainian artillery respond.
Sources: Army Q-36 Delivery to Ukraine, ArmyInform Kherson AN/TPQ-36 Use
Timeline
The public record begins with the 2015 U.S. delivery of two AN/TPQ-36 systems to Ukraine, followed by additional U.S. support in 2016. Defense Logistics Agency reporting said two AN/TPQ-36 radars went to Ukraine in 2015 and that depot technicians followed four more counterfire radars to the country in 2016 to repair and field the assets.
Before the full-scale invasion, RFE/RL reported in December 2017 that Ukraine's Defense Ministry was using U.S.-supplied Firefinder radars to monitor cease-fire violations by Russia-backed separatists in eastern Ukraine. After February 24, 2022, U.S. assistance releases listed 10 AN/TPQ-36 counter-artillery radars in the April 13 drawdown package, three more on May 6, and three more on May 19.
Sources: Army Q-36 Delivery to Ukraine, DLA Tobyhanna Firefinder FMS, RFE/RL Ukraine Firefinder Radars, DoD Ukraine April 2022 Assistance, DoD Ukraine May 6 2022 Assistance, DoD Ukraine May 2022 Assistance
Operational role
In Ukrainian service, the AN/TPQ-36 is a sensor and targeting-support system rather than a direct-fire weapon. The documented role is to detect incoming indirect fire, calculate launch locations, and give Ukrainian units data for warning, counter-battery fire, and artillery correction.
The Kherson Oblast ArmyInform account described a Ukrainian crew changing positions for concealment while using AN/TPQ-36 to automatically determine the location of Russian artillery, rocket-launcher, and mortar positions. The same report attributed to the crew a maximum range of 24 km and described the radar as useful when paired with aerial reconnaissance and Ukrainian artillery.
Sources: ArmyInform Kherson AN/TPQ-36 Use, Army Q-36 Delivery to Ukraine
Evidence limits
The cited sources support Ukrainian possession, transfer, deployment, and operational use, but they do not establish a complete Ukrainian inventory or a continuous unit-by-unit service history. The strongest public evidence for actual battlefield use is location-specific reporting from Kherson Oblast in 2023, while the 2015, 2016, and 2022 sources primarily document deliveries and fielding support.
Sources: Army Q-36 Delivery to Ukraine, DLA Tobyhanna Firefinder FMS, ArmyInform Kherson AN/TPQ-36 Use, DoD Ukraine April 2022 Assistance, DoD Ukraine May 6 2022 Assistance, DoD Ukraine May 2022 Assistance