angle of radiation
angle of radiation[′aŋ·gəl əv rād·ē′ā·shən]
Angle between the surface of the earth and the center of the beam of energy radiated upward into the sky from a transmitting antenna. Also known as angle of departure.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.