*within range (of something)
inside an area that can be covered by something, such as a gun, camera lens, measuring device, etc. (*Typically: be ~; come ~; get ~; move ~.) The sick elephant was within range, so we shot it with tranquilizer darts so we could treat it. When the ducks were within range of my gun, I sneezed and frightened them away. You won't be able to hear what they are saying until you get within range of the P.A. system.