Editing Direction finding (section)

===Sport===
{{main article | Amateur radio direction finding}}
Events hosted by groups and organizations that involve the use of radio direction finding skills to locate transmitters at unknown locations have been popular since the end of World War II.<ref>{{cite book | author=Titterington, B. |author2=Williams, D. |author3=Dean, D. | title=Radio Orienteering – The ARDF Handbook| publisher=Radio Society of Great Britain |year=2007| isbn=978-1-905086-27-6}}</ref> Many of these events were first promoted in order to practice the use of radio direction finding techniques for [[disaster response]] and [[civil defense]] purposes, or to practice locating the source of [[radio frequency interference]]. The most popular form of the sport, worldwide, is known as [[Amateur Radio Direction Finding]] or by its international abbreviation ARDF. Another form of the activity, known as "[[transmitter hunting]]", "mobile T-hunting" or "fox hunting" takes place in a larger geographic area, such as the metropolitan area of a large city, and most participants travel in [[motor vehicles]] while attempting to locate one or more [[radio transmitter]]s with radio direction-finding techniques.

{{gallery
|title=Selection of radio direction-finding stations
|align=center
|mode=packed
|File:NSGA Galeta Island Site.jpg|{{center|RDF antennas<br /><small>([[Galeta Island (Panama)|Galeta Island]])</small>}}
|File:VORTAC TGO Aichtal Germany 01.JPG|{{center|[[VORTAC]]<br /><small>(providing [[azimuth]] guidance)</small>}}
|File:Radiogoniométrie VHF.JPG|{{center|RDF on 121.5&nbsp;MHz <br /><small>([[Aircraft emergency frequency]])</small>}}
|File:RDF receivers antenna emergency location beacon aircraft 01.jpg|{{center|Aerial 121.5/156.8 [[MHz]] <br /><small>(Emergency location beacon aircraft)</small>}}
|File:Station radio goniométrique.JPG|{{center|RDF station 410 [[kHz]]}}
|File:Gemtronics GT302 DF.JPG|{{center|Maritime RDF station <small>(GT-302)</small>}}
|File:Pelengator.jpg|{{center|Maritime RDF station <br /><small>(Pelengator)</small>}}
}}