Huff-Duff

High Frequency Direction Finder is usually known by its acronym HF/DF, pronounced Huff-Duff. This has become the common name for this type of equipment, and was coined during World War II.

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Huff Duff is part of the armoury of the analysis of radio transmissions, known as ELINT. It is the sister discipline to the analysis of messages SIGINT.

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Along with ASDIC (sonar), Ultra code breaking (SIGINT) and radar, "Huff-Duff" was a valuable part of the Allies armoury in detecting German U-boats and commerce raiders during the Battle of the Atlantic.

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The idea of using two or more radio receivers to find the bearings of a radio transmitter and with the use of simple triangulation find the approximate position of the transmitter had been known and used for years. The Royal Navy was the first to design an apparatus that could take bearings on the high frequency radio transmitters employed by the German Kriegsmarine in World War II.

Acronym: REDIRECT Acronym and initialism...

ELINT: ELINT stands for ELectronic INTelligence, and refers to intelligence-gathering by use of electronic sensors....

SIGINT: :For other uses, see Sigint (disambiguation)....

Huff-Duff related Images and Photos (experimental)

Hilary Duff: Dignity	Hilary Duff: Dignity	Aubrey Huff	Hilary Duff
Haylie Duff	Hilary Duff: Most Wanted	Hilary Duff: Most Wanted	Hilary Duff Poster
Hilary Duff Poster	Hilary Duff Framed Print	Hilary Duff Novelty Driver License	The Simpsons Duff Can Cooler