OVERVIEW: Long range, fixed, nodding Height Finder radar. HS-200 Mk4 was primary Height Finder of the Linesman system and used with Master Radar Type 80.
DETAILS: Height finding on aircraft at long, medium or short range in the UK and overseas. Subsidiary Role. Provision of limited volumetric cover in place of an inoperative main search radar. It was deployed with Type 80 main 2D radar which lacked height finder.
NOTES: The height finding element of the Linesman system, the HF 200 succeeded the American AN/FPS-6 height finder radars used in the Rotor system. The HF 200's (along with the AN/FPS-6) were also known as "Nodding Horrors" and they spewed hydraulic oil everywhere. HF 200 Mk3's were located at the three main linesman sites at R.A.F. Boulmer, R.A.F. Staxton Wold and R.A.F. Neatishead. A Mk4 was commisioned at R.A.F Saxa Vord in the Shetland Islands in 1979.
SOURCES: The Radar Pages http://www.radarpages.co.uk/mob/linesman/hf200.htm ; Wikipedia: Linesman/Mediator http://en.wikipedia.org/wiki/Linesman/Mediator