Supplied with:

  • Instruction Manual
  • Quick Reference Placard
  • Registration Forms
  • Mounting Bracket

MT403G 406 MHz EPIRB with GPS Water/Man ActivAustralian Made

GME MT403 series EPIRBs are a culmination of three 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.

The GME MT403G 406 MHz digital EPIRB is the latest exciting extension of GME's growing family of innovative safety products. A key feature of the MT403 series is the use of non-hazardous battery packs that are IATA compliant and allow for restriction free transportation.

The MT403G also includes a water activation feature. Once it has been removed from its mounting bracket, the MT403G will activate automatically on immersion in water. Of course you can also activate it manually if required.

The MT403G has an additional 16 Channel parallel GPS receiver with top mounted Quad helix antenna to improve location accuracy to better than 100 metres typically.

Advantages of a 406 MHZ EPIRB over the older analogue EPIRBs include world wide coverage, position location accuracy to within 5 kms (100 m for the MT403G GPS model) and a more stable transmitted signal resulting in faster response time. Most importantly, the addition of a unique digitally coded message provides Search and Rescue authorities with vital information including the country of beacon registration and identification of the vessel in distress thus greatly reducing the incidence of false alerts and unneccesary deployment of valuable rescue resources.

An auxiliary homing transmitter is included in the MT403G to enable suitably equipped Search and Rescue forces to home on the distress beacon.

To learn more about EPIRB testing please click here



  • Unrivaled in Technology, Performance and Price.
  • COSPAS-SARSAT worldwide operation.
  • Ground breaking microprocessor based design, delivers unparalleled performance and value.
  • Meets AS/NZ 4280.1:2003 standards. C/S T.001/007.
  • Zero warm-up Digital Technology.
  • Antenna deploys automatically when the unit is removed from the quick-release mounting bracket.
  • High visibility solid state strobe.
  • Automatically activates on immersion in water (when removed from the bracket) or can be activated manually if desired.
  • Non-hazardous batteries for restriction free transportation.
  • 6 Year GME Warranty.
  • Rugged lightweight easy-to-mount compact design.
  • 6 Year battery life.
  • 16 Channel parallel GPS receiver with top mounted Quad helix antenna for better than 100 meter accuracy
  • Class 2 international accredited specification.
  • Easy, in-built self-test with audio / visual alert.


Activated UHF (406) and VHF (homer) complete with high intensity strobe and audible activation alert
Self Test Comprehensive internal diagnostics with visual and audible operator feedback. UHF test message (inverted synchronization compatible with portable beacon testers).
Activation Manually by operator and automatic when deployed in water
Bracket Type Manual release
Duration 48 hours minimum
Transmission Delay 121.5 and 406 MHz distress signals commence 60 seconds after activation
Warm Up None required (due to digital frequency generation)
VHF 121.5 MHz; 50 mW 3 dB; swept tone AM
UHF 406.037 MHz; 5 W 2 dB PSK (digital)
Strobe 20 flashes/minute at > 0.75 cd effective intensity
COPAS-SARSAT Certified to C/S T.001 (Class 2) requirements
UHF-Protocol/Data Serial number*; radio call sign; MMSI; all with GPS location
Repetition Period 50 s mean
Replacement Period Prior to expiry date marked on case
Replacement Method Service centre or factory only (non-user replaceable)
Chemistry LiMnO2 (0.49 g Lithium per cell)
Configuration 5 parallel packs each of 2 series cells
Operating -20˚C to +55˚C
Storage -30˚C to +70˚C
Weight 555g (plus 98g for bracket)
Compass Safe Distance 0.7m (inc. mounting bracket) from magnetic navigational device when inactive
Dimensions 102 (W) x 260 (H) x 83 (D) mm max. when stowed in bracket
Materials UV stabilized plastic chassis
Performance IEC 61097; IEC 60945; AS/NZS 4280.1; ETSI EN 300 066
Transport Class Exempt from UN3091
Patent Number GB2420058; other patents applied for.
GPS Internal 16 channel high performance receiver with quadrifilar helix antenna
Retention Lanyard Buoyant type approximately 5.5m long
Reflector SOLAS retro-reflective tape encircling unit above waterline
Solid State Strobe High reliability solid state design exceeds IMO requirements
Antenna Flexible self straightening stainless steel design
Bracket Quick release mechanism (manual). Retained by 4 vessel fixing points.
*Standard factory setting subject to national requirements. Distributor programmable via optical data interface.
**All specifications are typical and subject to change without notice or obligation