After the invention of radar in the late 1930s, the UK built a string of early-detection systems along its coastline. A major hub in this "Chain Home" was the RAF Stenigot, in Lincolnshire. In the 1950s, the station was updated with tropospheric scatter dishes, which allowed the army to transit and receive microwave signals by beaming them through the troposphere-the lowest level of the Earth's atmosphere. They were eventually decommissioned in the 1980s, and today the abandoned dishes are used for everything from climbing to skateboarding.
Photo: DigiTaL~NomAd
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