Thrane LT-3100S Iridium Satellite Phone System (GMDSS)


The Thrane LT-3100S is the first GMDSS system to offer 100% global coverage via the Iridium satellite network. 

Thrane LT-3100S Iridium Satellite Phone System (GMDSS)

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In December 2020 Iridium launched their GMDSS service, the first time customers have had a choice other than Inmarsat.


Iridium has the advantage of 100% global coverage, a feature no other network can offer.  The Thrane LT-3100S is the first terminal developed to work with this new service from Iridium.  As well as the GMDSS capabilities of Distress Alert, Safety Voice, and Maritime Safety Information (MSI), voice, SMS, data and vessel tracking are also available making the LT-3100S a smart choice for the primary source of communication at sea.


The system comprises of a control unit, handset and compact maritime antenna. A single cable connects the control unit with the antenna and with a standard coaxial cable, up to 500m of separation between the units can be obtained.  This enables the user to mount the antenna in the optimum position for clear line of sight to the Iridium satellites.

The LT-3100S GMDSS system is very easy to install and everything you need to get started is included in the box.  The control unit can be installed using either a bracket mount or flush mount. The antenna unit can be mounted using either a pole mount (1.5″ tube) or angle bracket mount (1″ to 2.5″ tube).


In The Box:

  • LT-3110S Control Unit
  • LT-3120 Handset
  • LT-3121 Cradle
  • LT-3130 Antenna Unit
  • Bracket Mount, Control Unit
  • Power Cable, 3m
  • Stainless steel A4 screws for mounting
  • User & Installation Manual
  • Unit Test Sheets
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Send a message through your device to an email address or SMS number. Not all mobile networks allow you to send text messages to satellite networks and as a result text messaging can be unreliable. Please check with your provider or contact us for further information.


Automated tracking is available on this device meaning contacts back home can follow your journey or you can monitor the movement of your assets.


Stay only a voice call away from friends, family or colleagues even when in the remotest of areas.


Built in navigational feautres such as current location, way point marking, preplanning of routes, trip information and digital compass are available on this unit.


LT-3110S Control Unit

658 g (1.45 lbs)

Dimensions 224.0 x 120.0 x 70.0 mm (8.82 x 4.72 x 2.76 in)
Temperature operational: -15°C to +55°C (+5°F to +131°F)
IP rating dust and water: IP32
LT-3120 Handset Unit
Weight 290 g (0.64 lbs)
Dimensions 208.8 x 52.8 x 38.2 mm (8.22 x 2.08 x 1.50 in)
Temperature operational: -15°C to +55°C (+5°F to +131°F)
IP rating dust and water: IP32
LT-3130 Antenna Unit
Weight 687 g (1.51 lbs)
Dimensions 151.1 x Ø 149.5 mm (5.95 x Ø 5.89 in)
Temperature operational: -40°C to +55°C (-40°F to +131°F)
IP rating dust and water: IP67


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