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Synonyms

radio direction finder

American  

noun

  1. a navigational aid establishing a fix by means of the bearings of two known radio stations. RDF

Etymology

Origin of radio direction finder

First recorded in 1920–25

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Why would Earhart start out on such a hazardous journey without knowing how to operate her aircraft’s radio direction finder to the nth degree?

From Forbes • Nov. 10, 2014

Best known is his Learmatic Navigator, a combined automatic radio direction finder and directional gyro, for which he got the Frank Hawks Memorial Award last December.

From Time Magazine Archive

In the lagoon lies the 6,000-ton S. S. Northwind, with a radio direction finder and a 35-man airport staff which laid out a runway channel with green and red buoys.

From Time Magazine Archive

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.