Manual Direction Finder

manual direction finder

[′man·yə·wəl di′rek·shən ‚fīn·dər]
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Manual Direction Finder

 

an aircraft radio direction finder for the semiautomatic location of a bearing on transmitting stations on the ground. It differs from an automatic direction finder in that it lacks a tracking system; the antenna loop is rotated manually. Since the mid-1970’s, the manual direction finder has become practically obsolete.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.