SIGINT sensors will be added to all Block ... the "R" is the Department of Defense designation for reconnaissance and "Q" means unmanned aircraft system. The "4" refers to the series of purpose ...

Milton's Sky Keeper UAV with a Rohde & Schwarz SIGINT payload consisting of a UMS400 and an ADD507 antenna. (Rohde & Schwarz) Milton's Sky Keeper unmanned aerial vehicle (UAV) was unveiled with a ...