A METHOD FOR LOCATING A PORTABLE SUBSCRIBER UNIT VIA REMOTELY INITIATED HIGHLY AUDIBLE EMISSION FROM THE MISSING UNIT
Original Publication Date: 1997-Dec-01
Included in the Prior Art Database: 2002-Jun-20
If a radio is lost or a radio user is unconscious and cannot respond in an area where searching the area is not an easy task, such as a collapsed, or burning building, there is no current ability to pinpoint exactly where the radio or down user is. What is needed is the ability to selectively cause an individual unit to emit a very loud audible indica- tion so that searchers in the immediate vicinity can quickly locate the lost radio or downed user. This ability is also needed in the lowest end portables which are often used by hunters, hikers, skiers, climbers etc. who could either lose a radio in the field or themselves become hurt or unconscious.