אינדקס
The largest "dish" antenna in the world, the radio telescope at Arecibo Observatory, Puerto Rico, 1000 feet (305 meters) in diameter. It has a gain of about 10 million, or 70 dBi, at 2.38 GHz.[10] The dish is constructed into a valley in the landscape, so it is not steerable. To steer the antenna to point to different regions in the sky, the feed antenna suspended by cables over the dish is moved. The dish actually has a spherical rather than a parabolic shape, which reduces
למדע נוסף שלחו אימיל .satworld@windowslive
מדינה פוארטו ריקו PUERTO RICO
רדיו טלסקופ במצפה אריבו
305 מטר
