direction finder(redirected from Radio direction finder)
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Related to Radio direction finder: Radio direction finding
A device for determining the source of a transmitted signal, consisting mainly of a radio receiver and a coiled rotating antenna.
(Navigation) 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 or DF
direction finding n
a receiver with a loop antenna rotating on a vertical axis, used to ascertain the direction of incoming radio waves.
direc′tion find`ing, n.
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|Noun||1.||direction finder - radio; determines the direction of incoming radio waves|
goniometer - direction finder that determines the angular direction of incoming radio signals
radio compass - a direction finder that gives a bearing by determining the direction of incoming radio signals