Huff-Duff
E33922
Huff-Duff (high-frequency direction finding) was a World War II radio direction-finding technology used primarily by the Allies to locate enemy submarines and ships by tracking their radio transmissions.
Aliases (1)
- Huff Duff ×1
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
World War II technology
→
military technology → radio direction-finding system → |
| abbreviation |
HF/DF
→
|
| advantage |
could be used while ship was maneuvering
→
did not require long manual operator skill like older DF systems → fast bearing determination → |
| alsoKnownAs |
HF/DF
→
Huff Duff → |
| conflict |
World War II
→
|
| contributedTo |
Allied anti-submarine warfare
→
protection of Atlantic convoys → |
| developedInContextOf |
naval warfare
→
|
| era |
1930s–1940s
→
|
| fullName |
high-frequency direction finding
→
|
| helpedCounter |
Battle of the Atlantic U-boat threat
→
|
| helpedWith |
intercepting short U-boat transmissions
→
reducing effectiveness of U-boat radio discipline → |
| historicalSignificance |
improved Allied ability to locate and attack submarines
→
|
| influenced |
postwar radio direction-finding systems
→
|
| keyCapability |
determining direction of arrival of HF transmissions
→
rapid bearing measurement of radio signals → triangulation of transmitter position → |
| languageOfName |
English
→
|
| measurementMethod |
amplitude comparison of received signals
→
phase comparison of received signals → |
| mountedOn |
escort warships
→
merchant ships → shore stations → |
| operatedOn |
high-frequency radio signals
→
|
| operationalDomain |
maritime operations
→
|
| primaryAdversary |
German Navy
→
Kriegsmarine U-boats → |
| relatedTo |
direction finding
→
radio intelligence → signals intelligence → |
| signalBand |
high frequency band
→
|
| technologyType |
radio receiver and antenna system
→
|
| typicalUse |
guiding escort ships toward submarine positions
→
taking bearings on U-boat radio messages → tracking U-boat wolfpack communications → |
| usedBy |
Allies
→
Royal Navy → United States Navy → merchant ships in Allied convoys → |
| usedFor |
locating enemy radio transmitters
→
locating submarines → locating surface ships → radio direction finding → |
Referenced by (2)
| Subject (surface form when different) | Predicate |
|---|---|
|
Huff-Duff
("Huff Duff")
→
|
alsoKnownAs |
|
Battle of the Atlantic
→
|
usedTechnology |