MT400 406 MHz EPIRB Manual Activation The GME MT400 406 MHz digital EPIRB is the culmination of years of extensive R & D by GME engineers. The end result is a radical new design concept that is not only a significant improvement on existing beacon performance but dramatically slashes the cost of 406 MHz EPIRB ownership. Advantages of a 406 MHZ EPIRB over the older analogue EPIRBs include world wide coverage position location accuracy to within 5 kms and a more stable transmitted signal re
