Albuquerque Transmitter Hunting
- An active group of Amateur Radio operators who locate hidden transmitters for fun and in times of need, such as determining the source of interference to local repeater systems or individuals who use the Amateur Radio bands illegally.
Ardf IARU Region II
- The IARU Region II ARDF Working Group defines the official rules for ARDF in IARU Region II, organizes the IARU Region II ARDF Championships, and supports the growth of the sport throughout the region.
ARDF in Norway
- The LA ARDF is the Norwegian Radio orienteering association, and our main activity is radio orienteering. We arrange regular competitions every week from the middle of April to late September.
- Radio Direction fingin in czeck republic
Direction finding, HVDFA
- The HVDFA is dedicated to fostering skills in the area of Radio Direction Finding as an interesting facet of Amateur Radio, both as a sport and for public service, in the multi-state region surrounding the Hudson River Valley of New York.
- Victorian Amateur Radio Direction Finding Group