Radiosport

Although they represent a broad range of amateur radio interests in their nations today, several member societies of the International Amateur Radio Union were originally formed for the promotion and organization of the sport of ARDF and continue to use the term radiosport in their society name.

Originally called SIAS (Shack in a sack), this radio-sport combines speed, a portable station and efficient communications.

International competitions typically involve several events, some of which are based on simulations of amateur radio activity.

One event in the Radioamateur Practicing Tests (RPT) uses a computer program that sends amateur radio call signs at high speed for a specified period of time, and generates a score for the competitor based on errors in copying.

Another event is the "pileup" competition, where competitors must copy as many individual call signs as possible while many are being sent simultaneously over a defined period of time.