Editing Direction finding (section)

===Wildlife tracking===
Location of radio-tagged animals by [[triangulation]] is a widely applied research technique for studying the movement of animals. The technique was first used in the early 1960s, when [[radio transmitter]]s and [[battery (electricity)|batteries]] became small enough to attach to wildlife, and is now widely deployed for a variety of wildlife studies. Most tracking of wild animals that have been affixed with radio transmitter equipment is done by a field researcher using a handheld radio direction finding device. When the researcher wants to locate a particular animal, the location of the animal can be triangulated by determining the direction to the transmitter from several locations.