Word: antennaed
(lookup in dictionary)
(lookup stats)
Dates: during 1960-1969
Sort By: most recent first
(reverse)
...minutes, its engine fired again, soaring out on a curving course that would lead to Venus. A few minutes later, a cluster of exploding pins popped and the spacecraft spread its, wings into the hard sunlight. All this was reported by telemetry to JPL's 85-ft. dish antenna in South Africa and relayed to the control center at the lab. "We were flying blind during lift-off and injection," says Bill Collier, Assistant Project Manager. "But about the time the panels came open, there was a shift of facial styles from worried scowls to big fat grins." Mariner...
That was in 1958. and all went well for a while. Then, in the past 18 months, citizens discovered the Citizens Band. What they have wrought since then has given the FCC one huge pain in the antenna...
Rule Tightening. A clean rig, says the FCC, has a maximum of five watts input, and has an antenna that reaches no higher than 20 ft. above the structure on which it is mounted. Adequate CB equipment, consisting basically of two transceivers (combination transmitter and receiver) and antenna, is marketed by a long list of reputable manufacturers, including Lafayette, Hammarlund, Halli-crafters, RCA and Heath, averages out at a cost of about $300. A typical, medium-priced transceiver operates on eight crystal-controlled channels providing locked-in transmitting frequencies in much the same manner as pushbuttons work on any radio...
Word flashed to all the worlds space centers that Mariner II was in trouble. But all was not lost; at Goldstone the scientists pointed their great dish antenna with special precision and sent a radio command to Mariner II, 36 million miles away. The radio waves, traveling with the speed of light, took more than three minutes to get to their target. At last came the voice of Mariner II, reporting that it had heard the command and turned on its instruments...
...important type of radio telescope does not try to observe celestial objects with a single antenna. Instead, two antennas are placed a considerable distance apart and connected electronically so that they function like parts of a single, very large dish. Since a telescope's resolution is proportionate to its width, the double antenna has a far narrower beam than a single dish. Even finer resolution is obtained by long, rocking metal troughs that gather radio waves and focus them so that they interact with waves gathered by another antenna running at right angles to the first. In Australia...