eg GME MT400 406Mhz EPIRB (CAT II)
Available for as little as Â£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')
How things work, what's hot and what's not
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