Threod Systems of Estonia is developing a signals intelligence (SIGINT) direction finder capability for its Stream C vertical takeoff and landing (VTOL) unmanned aerial vehicle (UAV), according to a company official.
Siim Juss, Threod business development manager, told Jane’s on 2 May that this capability will allow a user to spot handheld radios and similar technologies on the ground. Threod had its Stream C VTOL aircraft on display at the 2019 AUVSI Xponential conference.
Stream C VTOL is the upgrade version of the previous Stream C fixed-wing aircraft. The VTOL variant, which features removable quadcopters on the wings, has about five hours endurance while the fixed-wing version has six hours flight time.