Global operations across 5 continents.
Select your region

Head office: Great Yarmouth, UK

Regional head office: Chandler, Arizona

Regional head office: Perth, Western Australia

Regional head office: Singapore

Regional head office: Nairobi, Kenya

LARS Thrane LT-3100 System



The LT-3100 Iridium Communications System is a maritime satellite communication product from Lars Thrane A/S. The LT-3100 system is designed for the professional market (deep sea, fishing, and workboats), but can be used for the leisure market as well. The LT-3100 system meets all standards and certification requirements needed for worldwide maritime satellite communication equipment.

The LT-3100 system has voice and data capabilities with 100% global coverage. The LT-3100 system consist of a control unit, handset unit, and antenna unit. A single cable coaxial connects the control unit with the antenna unit. Using a standard coaxial cable, up to 500 meters of separation between the units can be obtained, giving freedom to mount the antenna in the best possible location, with free line of sight to the satellites.

The LT-3100 system can be used as the primary satellite communication product on vessels, covering the basic communication needs in terms of connectivity between the ship and shore. In addition, the LT-3100 system can be used for crew calling or as a back-up satellite communication product. The LT-3100 system provides voice, SMS, data, vessel tracking, and other Iridium services with competitive airtime rates.


  • Voice, SMS, Data, and Vessel tracking
  • 2.4 Kbit/s and 10 Kbit/s compressed data
  • Programmable softkeys for e.g. Emergency Service
  • Single antenna cable solution (up to 500 m)
  • High-performance GNSS/GPS receiver
  • Noise-canceling microphone and equalizer for improved audio quality
  • Bluetooth interface supporting voice, SMS, and data
  • Large 4.3” TFT display supporting day and night modes
  • Voice prompt audio feedback
  • Firewall and user authentication for high level of security
  • Webserver for configuration and maintenance
  • Support external LAN Wi-Fi Access Points
  • Support external SIP PABX and SIP handsets
  • Connectivity of Smartphones, Softphones, and Apps

In the box

  • Test sheet
  • Installation Guide
  • LT-3110 Control Unit
  • LT-3120 Handset Unit and Cradle
  • LT-3130 Antenna Unit
  • Control Unit Bracket Mount
  • 3m DC Power Cable


Network Logo

Airtime options

Prepaid options:


Postpaid options:


Product: LARS Thrane LT-3100 System


Transceiver Dimensions: 22.4 x 12 x 7 cm
Transceiver Weight: 698 g
Antenna Dimensions: 15.1 x Ø 14.9 cm
Antenna Weight: 882 g
Operating Temperature: -25°C to +55°C (Antenna)
IP Rating: IP67 Antenna, IP42 (Front) IP40 (back) Control Unit
Mounting: Pole Mount, Angle Bracket, Flush Mount
Input Voltage: 9.6 - 32.4 VDC
Standard Data Rate: 2.4 kbps and 10 kbps compressed data
Data: yes
SMS: yes
Email: yes
Broadband: yes
GPS: yes
Tracking: yes
Call features
Voice: yes
Integral Phonebook: yes
Caller ID: yes
Call History: yes
Call Forwarding: yes
Handsfree: yes
Product Interfaces
Antenna connector
Chassis Ground
DC power
SIM card slot