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direction finder

noun, Radio.
a receiver with a loop antenna rotating on a vertical axis, used to ascertain the direction of incoming radio waves.
Origin of direction finder
First recorded in 1910-15
Related forms
direction finding, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for direction finder
Historical Examples
  • Under Hume's control the direction finder passed back and forth without bringing any answering code click from the mike.

    Star Hunter Andre Alice Norton
  • Otherwise, the Federal Communications Commission would pick you up, use a direction finder, and move in on your operation.

  • Baron adjusted the direction finder and made scribbled calculations.

    The End of Time Wallace West
British Dictionary definitions for direction finder

direction finder

a highly directional aerial system that can be used to determine the direction of incoming radio signals, used esp as a navigation aid Abbreviation D/F, DF
Derived Forms
direction finding, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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