| 摘要 |
<p>An electronic personal locator (EPL) having a first inner housing containing a radio frequency signal generator connected to an antenna. The inner housing is located inside a second outer housing which contains activation means for activating the signal generator and a power source, both of which are operatively connected to the radio frequency generator. The antenna has a fixed shape which allows it to transmit a constant radio frequency output for a given input power and the EPL is of a compact design such that it can be conveniently worn by a person.</p> |
