April 6th is National 406 Day. It is easy to remember, as the date (04/06) corresponds to the 406 MHz frequency used by these devices to transmit digital signals to satellites. These beacons are considered by many in the maritime trades to be the best life insurance available. And in some cases, they are legally required by vessel owners. To read more about safety gear, please see our page regarding life rafts, EPIRBs and survival suits. National 406 Day is also a reminder to anyone with a beacon that federal law requires registration to be current.
What exactly is an EPIRB? It is an Emergency Position Indicating Radio Beacon that works by transmitting a signal via satellite that can then be relayed to a rescue coordination center. The device can be automatically activated (for example if the device is under more than 3 meters of water) or manually activated to transmit a distress signal.
Here is a list of 8 tips NOAA recommends when handling your EPIRB: