skos:altLabel | - DF
- RDF
- triangulate
- VDF
- VHF direction finding
- D/F
- D/F loop
- DF homing
- DF radio
- DF-ing
- Direction Finder (DF)
- Direction Finding
- Direction finding#Automatic direction finder (ADF)
- Direction finding#Radio-magnetic indicator (RMI)
- Direction finding#Station
- Direction-finding
- RDF (radar)
- Radio Direction Finder
- Radio Direction Finding
- Radio direction finder
- Radio direction finding
- Watson-Watt / Adcock antenna array
- direction finders
- direction finding
- direction to the source
- direction-finding
- direction-finding service
- radio direction finder
- radio direction finders
- radio direction finding
- radio direction finding (RDF)
- radio direction-finding
- radio plots
- radiobearing
- tracking down of clandestine enemy intelligence radio transmitters
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