Word: antenna
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...below - 400° F. to operate efficiently, refused to chill at all. Mariner 7 caused even greater concern at Mission Control when it went off the air entirely for seven hours. Apparently struck by a tiny meteoroid, the spacecraft lost its fix on the star Canopus and its directional antenna spun away from earth. A new roll-and-search command went up from Pasadena. Mariner 7 obeyed, and though performing at less than capacity, its radio functioned again...
...example, pressure readings in the cabin, data from the computers-and imposed them on a single "carrier" frequency of 2,282.5 megahertz. An amplifier increased the signal's power from half a watt to 20 watts, the strength of a small ham-radio transmitter. The 26-in. dish antenna, perched atop the LM, then beamed the signal to earth...
Traveling at the speed of light, the signal was picked up 1.3 sec later by the huge radio telescope at Goldstone, Calif., which has a dish-shaped antenna 210 ft. in diameter. Next, the signal was relayed to Goddard Space Flight Center near Washington, D.C., where the message was broken down into its individual parts and routed to Mission Control in Houston. The astronauts' voices then traveled via ordinary telephone lines to radio and TV stations in New York for rebroadcast throughout the U.S. and the world. In one of the longest roundabout routes in the history of radio...
...electronic wizardry was all the more impressive because the same carrier that transmitted voice signals to earth was made to handle TV as well. Although voices went to Goldstone, NASA technicians found that another 210-ft. dish antenna in Parkes, Australia, provided the best reception for the TV signal. From Parkes the signal was relayed overland to Sydney, flashed to the Moree Earth Station 200 miles to the north, beamed up to the Intelsat communications satellite 22,300 miles above the Pacific Ocean, relayed to Jamesburg, Calif., passed by microwave ground signal and coaxial cable to Houston and finally transmitted...
...classical and Beatles music accompanied by glowing visual abstractions that he dubs Psychedelevision in Color. Closer to Stanley Kubrick's 2001: A Space Odyssey than to Walt Disney's Fantasia, it is the sort of work that might well fill the extra channels on the cable antenna systems of the future. Eager to "take the waste out of the wasteland," Thomas Tadlock, 28, spent two years and a patron's $10,000 to create his Archetron. The result is a studio-size console, with 46 knobs and controls and four screens, that scrambles the signals of standard...