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NSA

GROUND BASED REMOTE

'DOC'ID: 4001127SE€Rft'_,..._I_______.(b)(3)-P.L. 86-36Ground- Based Remote~ntercept in the Far E~stIntrodllctionRadio communicationJ above approximarcly 20 Mfu,becau~ of their wavelength and the curyature of theeanh, are normally limittd to the radio horilon asde~ermincd by the elevation of the transmitting and .receivin11 antennas. Although there are many exceptions,transmisJiom above this frequency are normally "line-of-sight" and, as such, require small amounts of power tocommunicate over th...
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