Word: antenna
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Chief purpose of any direction finder in transport flying is not alone to locate ground points but to help determine the plane's position in flight. After a ground station is tuned in on the ship's radio receiver in this new Sperry-RCA apparatus, a loop antenna suspended beneath the plane rotates automatically until it is at right angles to the source of the signal, registering the bearing on the dial. Where two or more such bearings intersect is approximately the plane's position...
...ultrashort waves pass through the atmosphere beyond the horizon, they encounter a constantly varying complex of atmospheric conditions. They are bent, reflected, shifted with every change in the constantly shifting atmosphere, like spray from a hose in the hands of a drunken gardener. Such waves hit a receiving antenna beyond the horizon only sporadically and by accident. The Zworykin invention, using two receiving antennae hooked up to a single receiving station, and an automatic device to match the wave length at the transmitter and receiver to the atmospheric conditions of the moment, is designed to assure unbroken, even, ultra-high...
First complaint against WLW came before the original license expired from the Canadian Radio Broadcasting Commission. The 500-kw. power emanating from the Crosley Colossus interfered with a neighboring wave length assigned to station CFRB (Toronto). WLW raised a new antenna designed to control the direction of its broadcasting, turned its terrific voice away from Canada. But in the U. S. a different kind of complaint arose. Although WLW's license continued to be extended for six-month periods, it remained officially experimental. Owner Crosley was, nevertheless, in business - so much so that he raised WLW charges...
...Physicist Anthony Easton. Last week, Researcher Easton finished his job: the design for an automatic distress signal. The apparatus is a two-tube, five-meter radio sending set, cased against fire in two inches of asbestos, housed in the plane's tail, spring-mounted against shocks. Its short antenna is a streamlined metal rod running from the fuselage along the leading edge of the plane's vertical stabilizer. Designer Easton chose to set his radio in the tail because he remembered the TWA crash, knew that a plane's tail, having little mass, is seldom demolished...
From Yakutsk, Siberia, his CQ (calling all stations) carried 4,837 miles to Hermosa Beach, Calif. During earlier tests from Wichita, Kans., it was heard in Honolulu, 4,226 miles away. Altering the length of the harmonically operated antenna gave his radio beam virtually any direction he chose. When the antenna trailed its rubber wind sock at full length, the signal was concentrated straight on the spot to which the plane's nose pointed, straight back in the opposite direction. This gave maximum performance down the two most desirable paths, forward to the next destination, back to the last...