ardf การใช้

• In 2005 over $ 1.4 million was donated from ARDF.
• ARDF is a sport that spans much of the globe.
• ARDF events use attenuator, and directional antenna.
• Typical awards for ARDF events are medals, trophies, plaques, or certificates.
• Army Airborne Radio Direction Finding ( ARDF ) in South Vietnam was phased out.
• The first ARDF event to use the new standardized rules was the 1980 World Championship.
• The KFRR organizes and supports Amateur Radio Direction Finding competitions and the Kazakhstan national ARDF team.
• In addition to the rules of the sport, ARDF competitions must also comply with radio regulations.
• ARDF activity is also found in Thailand, Australia, New Zealand, Canada, and the United States.
• Beacon control points are shown for post-competition analysis; ARDF competitors must find the beacons . ]]
• An ARDF competition takes place in diverse wooded terrain, such as in a public park or natural area.
• Alternatives Research and Development Foundation : http : / / www . aavs . org / html / ardf . html
• ARDF events use VHF band, requires equipment that is relatively more complicated to design and more expensive to build.
• ARDF transmitters have a low power output and operate in either the two meter or eighty meter amateur radio band.
• ROCA is not as popular as ARDF, and activity is limited to only active clubs in a few countries.
• In fact, many ARDF competitions use existing orienteering maps, in collaboration with the orienteering clubs that created those maps.
• The rules used throughout the world, with minor variations, are maintained by the IARU Region I ARDF Working Group.
• While some variations exist, these standardized rules have since been used worldwide for ARDF competitions, and the IARU has become the principal international organization promoting the sport.
• An ARDF competition normally takes place in diverse wooded terrain, such as in a public park or natural area but competitions have also been held in suitable suburban areas.
• Although all competitors at an ARDF event use the same competition area and listen to the same set of five transmitters, they do not all compete in the same category.