- 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a highly directional aerial system that can be used to determine the direction of incoming radio signals, used esp as a navigation aidAbbreviation: D/F, DF
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