Copy of historic photograph showing detail of radar aerial and mast. The transmitter/receiver block is visible to the rear of the mast.

Description Copy of historic photograph showing detail of radar aerial and mast. The transmitter/receiver block is visible to the rear of the mast.

Date c. 1941

Catalogue Number SC 642946

Category On-line Digital Images

Copy of C 44881

Scope and Content Radar gantry and aerials, World War II Chain Home Extra Low radar station, The Ward, Deerness, Mainland, Orkney Islands From the outbreak of World War II in 1939 early warning of the movement of enemy aircraft was based on Chain Home systems of Radio Direction Finding (RDF) or radar, as it became known, a technique which had been developed in secret since 1935. Forming part of an East Coast Chain Home series which provided long-range detection, two stations were installed in Orkney, one at Netherbutton on East Mainland, about 9.6km south of Kirkwall, and another at Whale Head, close to the north-eastern tip of Sanday. The main features of the stations were the receiver blocks and transmitter blocks with their associated masts and generators for the electricity power supply. In order to remain operational in the event of attack or damage, most Chain Home stations, including the two Orkney sites, also had standby generators and held duplicate equipment in reserve installations which were described as buried or remote. Fuller coverage of Orkney was also provided by a small number of Chain Home Low and Chain Home Extra Low stations, which, as their names imply, were designed to detect low-flying aircraft operating below the range of the Chain Home system. This copy of a photograph taken by the local farmer, probably in 1946, shows the gantry and radar aerials, still complete in their immediate post-war state, mounted on concrete bases at the lower end of the transmitter/receiver block. In the right background is an indistinct, distant view of the gantry of a Chain Home Extra Low unit. At the heart of the Orkney archipelago, Scapa Flow was the main fleet anchorage for the Royal Navy during both World Wars. Its vital importance led to the creation of one of the most concentrated defence networks in Britain. Source: RCAHMS contribution to SCRAN.

Permalink http://canmore.org.uk/collection/642946

File Format (TIF) Tagged Image File Format bitmap