406MHz EPIRBs - how good are they?

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Fairwinds
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Joined: Sun Dec 18, 2005 1:14 am

406MHz EPIRBs - how good are they?

Postby Fairwinds » Sun Dec 18, 2005 1:15 am

eg GME MT400 406Mhz EPIRB (CAT II)

Available for as little as £270

Says 'initial position location accuracy to within 5km'

How does it do this? I thought you had to have a GPS connected for this to work . . . does it just do it by triangulation on three or more satellites? ANd why only 'initial' position - doesn't this update the whole time it is broadcasting?

(Just reading Steve Callaghan's book 'Adrift' and going off the Hasler dictum of 'drowning like a gentleman')


- NB
Fairwinds
Albin Vega 1842

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