direction finderA device used to locate the direction of an incoming radio signal. Usually a loop antenna is rotated until maximum reception strength is achieved, giving the line of the transmission. If this is repeated from a different position, the transmitting station may be located. The radiocompass used in air and sea navigation is a direction finder: position is determined by finding the directions of two or more transmitters. Related category TECHNOLOGYAlso on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History |