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Category I beacons-Automatic deployment and activation
If the vessel sinks, the HydroFix™ HRU frees the beacon from the
bracket, allowing it to float to the surface. Built-in sensors detect that the
beacon is no longer in its bracket and when continuity is created by
water between two of the top cap screws, an activation circuit is
completed.
NOTE: Transmission of the 121.5 MHz and 406 MHz signals will not
occur until 100 seconds after activation.
HRU releases the rod
separating the front and
back cover of bracket at a
depth between 4-13 feet
Y1-03-0233 Rev. L
Ejector Spring
launches EPIRB
from the bracket
allowing it to float
freely to the water
surface
12
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