The radio detection finder is a hand held device, used to find small communication devices, such as walkie-talkies, that are currently in use.
This device is an aid in finding lost or trapped persons in a rescue situation.
Equipment in UseEdit
In Cry Wolf, the radio direction finder was used to find Bob and Tony Williams who were trapped in a tin mine. Alan got them to transmit on their walkie-talkie so as Virgil could get a fix on their location.