Word: antenna
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Dates: during 1950-1959
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...Otto Struve, director of the new National Radio Astronomy Observatory at Green Bank, W. Va., announced a project that aims to bring earthlings out of their isolation. Starting New Year's Day or soon thereafter. Green Bank will point the observatory's 85-ft. parabolic reflector antenna at the most likely stars, listen for radio signals from planets around them...
...Fort Monmouth men, led by Dr. Hans A. Bomke, was quietly watching for subtler effects. To pick up the faint traces they were looking for, they had to establish a widespread network of magnetometers, enlisted the help of Sweden, Iceland and Portugal. At each site, a huge antenna was laid out by running a single wire along the ground in a loop 50 miles in diameter. In the U.S., one was set up in the open desert in Arizona, another in a sprawling New Jersey state forest, a third in the Maine woods. Last week, after laborious analysis and collation...
...learned to send signals over mountains, across oceans, and up to the moon and back. But the search for a radio that could transmit signals beneath the water's surface was sterner. To receive messages in World War II, subs had to surface or poke up the antenna-bearing periscope and risk detection. Last week word leaked that the U.S. Navy has whipped this underwater communications problem...
...peninsula jutting from the rocky northern coast near Cutler, Me., the Navy is building a $63 million transmitter complex that, by any measure, will rank as the world's biggest. Rising 980 ft., its two main antenna masts are almost as tall as the Eiffel Tower (984 ft.). With their flanking arrays of twelve smaller masts, each complex occupies the ground space of eleven Pentagons. Operating at 2,000,000 watts, the station will be 40 times more powerful than the biggest commercial stations and three times more powerful than the mightiest military transmitters known to exist...
...heart of Raytheon's projected system is an "Amplitron" tube, a chunky object 2 ft. high. The tube transmits as much as 25 h.p. on a beam of 10 cm. waves shot into the air by a dish antenna. A nest of these tubes can be focused at a point about 50,000 ft. up. Some of the beams' energy will wander off into space, but Raytheon scientists believe that a saucer-shaped receiver can capture 35% to 50%. Turned into heat, this energy could drive a gas turbine which would drive the helicopter blades...