radio marker beacon station

radio marker beacon station

[′rād·ē·ō ′mär·kər ‚bē·kən ‚stā·shən]
(navigation)
Station marking a definite location on the ground as an aid to aircraft at altitude; the International Civil Aviation Organization beacons operate at a single frequency of 75 megahertz.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.