Smithsonian Report, I960 — Green and Pettengill 



PLATE 2 



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An artist's conception of the 60U-foot antenna under construction lor the U.S. Nav\' at 

 Sugar Grove, West Virginia. This huge steerable paraboloid will be precise enough to 

 work at wavelengths as short as the neutral hydrogen line at 21 centimeters. It will be 

 an important tool for future planetary radar experiments. The installation, known as 

 the Naval Radio Research Station, is to cost about }?80,000,000. (U.S. Navy photograph.) 



