As part of the Next Generation Air Defense Early Warning Radar (KALKAN-II) Procurement Agreement signed between the Ministry of National Defense and ASELSAN in 2016, the acceptance of a total of 11 systems has been completed.
The KALKAN II Air Defense Radar HBT project covers the design and production of the X-band multi-channel RF rotary joint and waveguide unit needed within the scope of the KALKAN-II Air Defense Radar project conducted by the Aselsan REHIS sector presidency. Of the 19 units to be delivered during the project, 11 were delivered.
KALKAN is a three dimensional radar system for low and medium range air defense mission operations. Benefiting from its electronic scanning capability in elevation and multi-beam architecture, the radar enables fast and accurate detection and tracking of low altitude air targets in three dimensions, providing the air picture for the command & control system. KALKAN-II is used as the main search radar of the Turkish Land Forces Command Air Defense Early Warning Command Control System (HERIKKS) and the Medium-Altitude Air Defense missile system (HISAR-O).

KALKAN can track multiple targets accurately, adding classification and identification information to each target track. The system employs a phased array antenna with multi-beam architecture optimized for search and track functions. KALKAN is compact and easy-to-use standalone radar system with sensor on a trailer towed by a tactical truck.
KALKAN can send target and jammer reports to Command Control Systems over its radio and can receive commands from the C2 system. KALKAN is currently the main radar of the Turkish Armed Forces’ mobile Air Defense Early Warning and Command Control System (HERİKKS) and Medium Altitude Air Defense Missile System.
As a field proven system with numerous units serving the Turkish Army, KALKAN is an ideal choice as the main search radar for low and medium range air defense command & control and missile systems.