Brazilian Air Force’s KC-390s will be installed with the Selex ES Gabbiano T20 radar. Selex says the T20 for the KC-390 incorporates radar modes optimized for military transport aircraft.
By Ministério da Defesa (Apresentação KC-390) [CC BY 2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons