Obsolete types Emergency position-indicating radiobeacon station

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1 obsolete types

1.1 obsolete epirbs
1.2 obsolete elts
1.3 obsolete plbs





obsolete types
obsolete epirbs

there several older types of epirb devices no longer recommended use.



class – 121.5 mhz automatic activation unit. due limited signal coverage , possible lengthy delays in signal recognition, u.s. coast guard no longer recommends use of type.
class c – operates on vhf channel 15/16. designed small crafts operating close shore, type recognized in united states. use of these units phased out in 1999.
class s – 121.5 mhz unit similar class b included integral part of lifeboat or survival suit. use no longer recommended u.s. coast guard.
inmarsat e – entered service in 1997. unit automatic activation unit operating on 1646 mhz , detectable inmarsat geostationary satellite system. class of epirb approved global maritime distress , safety system (gmdss), not united states. in september 2004, inmarsat announced terminating inmarsat e epirb service of december 2006 due lack of interest in maritime community.

furthermore, u.s. coast guard recommend no epirb of type manufactured before 1989 used.


obsolete elts

any elt not 406 mhz elt hex code became obsolete february 1, 2009.

obsolete plbs

military forces @ 1 time used 121.5/243.0 mhz beacons such prc-106, had built-in vhf radio. these being replaced modern 406 mhz plbs.




^ inmarsat withdraw epirb service in 2006 , promises new safety service on next generation i-4 satellites . archived original on december 9, 2006. 






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