INFORMATION:

Ringstead Bay:
From 1940 defensive measures were installed at radar stations, including Light Anti-Aircraft gun emplacements, pill boxes, road blocks and air raid shelters. Ringstead station was technically restored in the early 1950s as part of the Rotor programme and was in use until 1956. Aerial photography from 1978 shows three earth-covered buildings at the site within a 750 metre radius, two of these being the transmission and receiver blocks. The remains of two aerial base sets and 2-3 ancillary buildings also remain extant.
(Past Scape.org.uk) .