On Sunday, systems at the Terminal Radar Approach Control facility in ... the government had built a system — called Chain Home — that could detect enemy aircraft within a 100 mile range.

The word, radar, is a near acronym that stands ... By the outbreak of the war in 1939, the government had built a system — called Chain Home — that could detect enemy aircraft within a 100 ...

The word, radar, is a near acronym that stands for RAdio Detection ... By the outbreak of the war in 1939, the government had built a system — called Chain Home — that could detect enemy aircraft ...