 Located south of Newcastle, the 208 Radar Station was an Advanced Chain Overseas (ACO) unit that utilised a different form of radar technology than the Ground Control Interception unit (GCI) installed at Ash Island.However, the 208 Radar Station did use the aboveground concrete igloo structures to house the radar equipment as did the 131 Radar Station (former).The 131 Radar Station (former) is located on Ash Island, on the western end of Kooragang Island.