Amateur radio direction finding ARDF , also known as radio orienteering , radio fox hunting and radiosport is an amateur racing sport that combines radio direction finding with the map and compass skills of orienteering. It is a timed race in which individual competitors use a topographic map , a magnetic compass and radio direction finding apparatus to navigate through diverse wooded terrain while searching for radio transmitters. The rules of the sport and international competitions are organized by the International Amateur Radio Union. The sport has been most popular in Eastern Europe , Russia , and China , where it was often used in the physical education programs in schools. ARDF events use radio frequencies on either the two-meter or eighty-meter amateur radio bands. These two bands were chosen because of their universal availability to amateur radio licensees in all countries. The radio equipment carried by competitors on a course must be capable of receiving the signal being transmitted by the five transmitters and useful for radio direction finding, including a radio receiver , attenuator , and directional antenna.
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I know this is an obscure sport in most of the English-speaking world, but it has lately seen some growing popularity in the United States , Australia , and the United Kingdom. I would appreciate any feedback on the article, especially from individuals for whom the entire subject is completely new. I plan to submit this article as a Featured Article Candidate some time this week. Any comments before than are appreciated.
Amateur radio direction finding
In the early days, not only was being able to communicate over long distances found to be invaluable, but so was being able to locate the source of such a signal, especially in the event of an emergency. Although the technology has changed over the many decades, the essential elements of the techniques have not. Despite advances in technology, it is still largely up to the skill of the RDF equipment operator to make sense out of the information gleaned from their gear.
ARDF - Amateur Radio Direction Finding - is an exciting branch of amateur radio activities, attracting people from youngsters and teenagers to experienced old timers and veterans. Participants of these events arrive to the spot annouced by the organiser, dress the sport garments suitable for running and start in small groups to meet the direction finding adventure. Their task is to discover - by taking radio bearings - four or five hidden low power transmitters, located in a forest in adequate distance each from other.