Guide to Emergency Location Devices
EPIRB – 406MHz Emergency Position Indicating Radio BeaconUsed on powerboats, yachts and ships to help rescuers locate vessels after being activated in an emergency situation. EPIRBs transmit two frequencies with a transmission time of 48 hours
- 406 MHz via satellite to a search and rescue centre from anywhere in the world
- 121.5 MHz for detection by aircraft, helicopters and ships for localised homing in on the beacon
PLB – 406MHz Personal Locator BeaconUsed in both marine and land based environments. PLBs operate on the same 406 MHz and 121.5MHz frequencies as EPIRBs but are smaller and lighter and are more suitable to be carried or worn by the user – typical weights being 150gm to 350gm. PLBs have smaller batteries than EPIRBs with a transmission time of 24hours
- Please Note: EPIRB and PLBs equipped with GPS transmit the exact latitude/longitude co-ordinates of the emergency, dramatically reducing response times
ELB – 121.5MHz Personal Man overboard Electronic Locator BeaconIf a person wearing an ELB locator beacon falls or is washed overboard from a vessel, the ELB activates automatically when immersed in water.
- ELBs transmit on a 121.5MHz emergency signal and if monitored by a locator receiver, the crew will be alerted immediately and can track and locate the wearer.
- ELBs can also be manually activated.
SART - 9GHz Radar TransceiverWhen a radar signal is received from a ship or aircraft, SARTs automatically transmit a response signal which clearly identifies the position of the SART on the radar screen of the transmitting ship or aircraft, by means of a stream of 12 in-line dots.
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AIS – Automatic Identification SystemPersonal AIS Beacons are waterproof and buoyant.
- When activated, Personal AIS Beacons transmit a signal to all VHF AIS enabled radios within a typical 4 mile range, signalling that help is required.