Word: beaming
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G.C.A. is made up of two microwave radar systems. The first is a rotating search beam: it is a modification of the two-dimensional radar used during the war to warn against the approach of enemy planes. Function of the search system is to find the approaching aircraft, and guide it through air traffic into the ten-mile range of the precision system...
...precision system is the heart of G.C.A. It consists of two radars which "scan" the approach area with fixed antennae. The elevation beam shows the plane's altitude and its rate of descent. The azimuth beam shows the direction of the plane's approach and its distance from the landing field. In both indicators, the plane's air track appears on calibrated error meters-with a hairline representing the ideal approach. On the basis of these meter readings, the pilot gets such verbal instructions as "Change course to 064 degree heading" or "Increase rate of descent...
...Britons who live in the somnolent shadow of Sabbatarian BBC, prewar Radio Luxembourg was a sprightly, sunny beam. Its bright shows included hotcha acts from British music halls, such U.S. soap operas as Stella Dallas...
Patrick Hurley's resignation rampage served another purpose. It turned the beam of public interest on the State Department-and on one of its dustier aspects. As many besides Pat Hurley had long known: 1) on many points of foreign relations, particularly with China, the Department is as divided as China itself; 2) the day-to-day direction and implementation of policy is sometimes in the hands of men opposed...
...type of jammer, called "Tuba," shot mighty blasts of radio interference from the bluffs of southern England. When British night bombers streamed home from raids, Tuba's beam was a sheltering arm reaching out from home. Within its protection, bombers were safe from Nazi fighters. Nazi radar scopes showed nothing but Tuba's enormous blur...