The Defence Turret has a single known variant in Imperial records, the Communications Array: * Communications Array - The Communications Array is a variant of the Defence Turret that replaces the turret's standard Autocannons with a large communications dish. This variant is mounted in much the same way as the standard Defence Turret, although it is not used to defend from enemy attack but instead to send and receive Vox communications from forward outposts and starships in orbit.