Linesman/Mediator system Radar HF 200 Height finder
Editors note: I am indebted to Kelvin Holmes for providing the technical details of the HF 200 and to Frank Lovett and Dave Quantrill for their contributions. Height finder radar aerial radiation patterns feature narrow vertical and broad horizontal beam widths. The aerial nods up and down at 20 or 30 cycles per minute and can rapidly slew in azimuth to face the bearing of the target that you want to find the height of. The Range Height Indicator (RHI) display shows range against height on a CRT. The required target was marked on the height operators display by a strobe that was initiated from a PPI operator's console. Initiating this strobe caused the height finder radar to swing around to face the target azimuth (Azication). The height operator aligned his cursor to the centre of the indicated radar paint on his height display and the height was then calculated by equipment in the Radar Office. In the Rotor system the calculated height was then displayed on an indicator adjacent to the operator console requesting the height, can anyone tell me how HF200 height information was processed in Linesman please?. |
Updated 02/02/03 |
Constructed by Dick Barrett |
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