Английский словарь американских идиом - within call

or within hail {adv. phr.} 1. Near enough to hear each other's voices. * /When the two ships were within hail, their officers exchanged messages./ * /Billy's mother told him to stay within call because supper was nearly ready./ 2. In a place where you can be reached by phone, radio, or TV and be called. * /The sick man was very low and the doctor stayed within call./ * /The soldiers were allowed to leave the base by day, but had to stay within call./