EMERGENCY BEACON AND METHOD OF ADJUSTING BEACON TRANSMIT PERIOD

摘要

An emergency beacon, such as an emergency position indicating radio beacon (EPIRB) 1, has a transmitter 8 for transmitting a distress signal over a wireless communications network, such as a satellite communications network. It also has a receiver 10 for receiving a control signal over the wireless communications network and responds to receipt of the control signal to vary its operation. In particular, the EPIRB 1 can be controlled remotely to vary the times at which the distress signal is subsequently retransmitted by the EPIRB 1.