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Testing EPIRBs

Testing EPIRBs

406 MHz EPIRBs can be tested through its self-test function, which is an integral part of the device. Testing a 406 MHz EPIRB by allowing it to radiate outside such a container is illegal.

An Emergency position indicating radio beacon has the following features:

  1. Emitting two types of distress signals: 406.028 MHz and 121.5 MHz
  2. The EPIRB main unit attached to the automatic release bracket is automatically released within water depth 4 meters and sends two types of distress signals.
  3. After release from the automatic release bracket, the EPIRB main unit starts to send distress signals upon sensing water. If the EPIRB main unit is removed from the automatic release bracket on board the ship by mistake, it will send no distress signal.
  4. Manual activation to send distress signal is possible by turning selector switch ON. The emitting of the 406.028 MHz distress signal starts 50 seconds after the power was turned on and then the 0.44-second distress signal is repeatedly sent at 50-second intervals for 48 or more hours. This unit normally operates even if it is dropped from the 20 meters height on the surface of the sea.

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