What is "radiosport"

n. sport combining radio direction finding and orienteering; transmitter hunt; foxhunt

Radiosport (or radio sport) is formal competition between amateur radio operators in any of three amateur radio activities. The Friendship Radiosport Games is an international multi-sport event that includes all three types of radiosport. Since 1977, the International Amateur Radio Union has sponsored the IARU HF World Championship (originally named the IARU Radiosport Championship). The World Radiosport Team Championship is another international competition.