Remote Radar Head Benbecula (RRH Benbecula) is an air defence radar station operated by the Royal Air Force, located at Cleitreabhal a'Deas, on the isle of North Uist in the Outer Hebrides of Scotland. Established in 1980, it was previously known as RAF Benbecula, a name that was also associated with a former RAF airfield (now Benbecula Airport) and a nearby weapons testing range (now MoD Hebrides). Initially, a control and reporting centre, part of the UK Air Surveillance And Control System (ASACS), was constructed, linking it to RAF Buchan. In the late 1990s, the station was downgraded to a remote radar head, and the RAF withdrew from the main Benbecula airfield site. Responsibility for command and control was transferred from RAF Buchan to RAF Boulmer in September 2004. The station has operated various radar types, including the Type 92 (Lockheed Martin AN/FPS-117), which was replaced in 2015 by a Lockheed Martin AN/TPS-77 system. This new radar was funded by wind farm developers to mitigate interference from wind turbines. The radar collects data as part of the UK Air Surveillance And Control System (ASACS) based at RAF Boulmer, supporting the creation of the recognized air picture for the United Kingdom. The site also accommodates several types of VHF and UHF ground-to-air transmitters. Radar Flight (North) of the ASACS Engineering & Logistics Squadron from RAF Boulmer oversees its operational availability. As part of Programme HYDRA, the Ministry of Defence began a major upgrade of RRH sites in 2020, including new communications buildings, radar towers, and perimeter security.