Lars Thrane LT-4100 Maritime Satellite Communications System
The Lars Thrane LT-4100 Maritime Satellite Communications System is a professional Iridium Certus® 100 terminal designed to provide dependable voice and IP data communications for vessels operating anywhere in the world. Built for commercial fishing vessels, workboats, offshore operators, research vessels, and recreational yachts, it delivers reliable satellite connectivity beyond the reach of cellular networks through the Iridium global satellite network.
The system supports two simultaneous high-quality voice lines and IP data speeds of up to 88 kbps downlink and 22 kbps uplink, making it well suited for voice calls, operational communications, weather updates, email, vessel monitoring, and essential onboard connectivity. A rugged marine design, integrated GNSS receiver, intuitive 4.3-inch display, and simple single-cable antenna installation make it practical for both new installations and vessel upgrades.
When purchasing from Satellite Phone Store, you'll receive expert assistance selecting the right Iridium Certus service plan, professional product guidance, fast shipping, and ongoing support from a team specializing in satellite communications for commercial and recreational maritime operations.
Description
Global Maritime Communications
The LT-4100 uses the Iridium Certus® 100 service to provide dependable voice and IP data communications anywhere in the world, including remote oceans and polar regions where terrestrial networks are unavailable. It supports two simultaneous voice calls alongside background IP data, allowing crews to stay in contact with shore, exchange operational information, receive weather updates, and access essential online services from virtually any location.
Its combination of reliable global coverage and straightforward operation makes it suitable as either a primary communications system for smaller commercial vessels or a dependable backup communications solution aboard larger ships.
Built for Life at Sea
Designed specifically for marine environments, the LT-4100 is engineered to operate reliably through demanding offshore conditions. The external antenna is IP67 rated to withstand exposure to water and harsh weather, while the overall system complies with marine vibration standards for continuous operation aboard working vessels.
The compact hardware is suitable for both commercial and recreational installations, offering dependable performance whether the vessel spends days offshore or operates year-round in challenging conditions.
Straightforward Installation and Everyday Operation
Installation has been designed to be as simple as possible. The antenna connects to the control unit using a single coaxial cable, allowing installers considerable flexibility when positioning equipment throughout the vessel. The control unit features a bright 4.3-inch color display with day and night viewing modes, making routine operation clear and intuitive.
Built-in Ethernet networking, a web-based management interface, integrated firewall, and support for SIP telephones allow the system to fit easily into modern onboard communication networks without requiring complicated setup or ongoing maintenance.
Designed for Commercial and Recreational Vessels
The LT-4100 is well suited for commercial fishing boats, workboats, offshore support vessels, research vessels, government craft, expedition vessels, and private yachts that require dependable satellite communications beyond the reach of cellular coverage.
Whether coordinating daily operations, checking weather information before changing course, calling shore, or maintaining contact during extended offshore passages, the system provides reliable voice and data connectivity wherever the voyage leads.
Features
- Easy to Install
- Everything is included in the box to get started with the installation and operating the LT-4100 system
- IP Data and Management
- 22 kbps (up) / 88 kbps (down) and data management like configuration of outgoing firewall, port forwarding
- Single Antenna Cable Solution
- Up to 500m
- POTS
- POTS via Analogue Telephone Adaptors (ATA)
- LAN Interface
- Ethernet LAN interface on control unit
- Voice Prompt Audio Feedback
Package
Lars Thrane LT-4100 Maritime Satellite Communications System Includes:
- LT-4110 Control Unit
- LT-3120 Handset
- LT-3121 Cradle
- LT-4130 Antenna Unit
- Bracket Mount, Control Unit
- Power Cable, 3m
- Stainless steel A4 screws for mounting
- User & Installation Manual
- Unit Test Sheets
Technical Specifications
Power
- 12–24 VDC input
Dimensions
- LT-4110 Control Unit - 224.0 x 120.0 x 70.0 mm (8.82 x 4.72 x 2.76 in)
- LT-3120 Handset Unit - 52.8 x 208.8 x 38.2 mm (2.08 x 8.22 x 1.50 in)
- LT-4130 Antenna Unit - 182 x Ø 162 mm (7.16 x Ø 6.39 in)
Weight
- LT-4110 Control Unit - 0.67 kg (1.48 lbs)
- LT-3120 Handset Unit - 0.30 kg (0.66 lbs)
- LT-4130 Antenna Unit - 1.39 kg (3.05 lbs)
Durability
- Antenna: IP67
- Control Unit: IP32
- Handset: IP32
- IEC 60945 vibration compliant
- Antenna operating temperature: -40°C to +55°C
- Control Unit operating temperature: -15°C to +55°C
Additional
- High-performance GNSS/GPS receiver
- Built-in firewall
- User authentication
- Port forwarding
- Remote configuration
- Up to 500 m antenna cable separation
Data Network
- Iridium Certus® 100
- Download: Up to 88 kbps
- Upload: Up to 22 kbps
- Ethernet LAN interface
- Background IP data
- Two simultaneous voice channels
- Support for SIP handsets
- Support for SIP PBX
- POTS support via ATA
Interfaces
- Ethernet LAN
- Single coaxial antenna connection
- Web configuration interface
Documentation:
