Inmarsat Global Xpress | Inmarsat GX | Orbital Satcom

High-Speed Satellite Broadband, Anywhere on Earth

Inmarsat Global Xpress (GX) is a high-throughput satellite broadband network designed to deliver fast, reliable connectivity in the world’s most remote and demanding environments.

Powered by a global constellation of Ka-band satellites, GX enables organisations to access enterprise-grade internet, voice, and data services far beyond the reach of traditional networks.

What is Inmarsat GX?

Global Xpress is a globally available, high-speed satellite network operating on Ka-band frequencies, engineered for bandwidth-heavy applications such as video, cloud access, and real-time communications.

Unlike legacy satellite systems, GX delivers consistent performance worldwide through a single operator network, ensuring seamless connectivity across regions and use cases.

With download speeds of up to 50 Mbps and beyond, GX brings true broadband capability to land, sea, and air.

How the GX Network Works

The GX network is built on a global constellation of geostationary satellites, working alongside a sophisticated ground infrastructure.

Key elements include:

  • Ka-band satellites (I-5 constellation) delivering high-throughput data

  • Global spot beam coverage for increased speed and efficiency

  • Steerable beams that dynamically allocate capacity where it’s needed

  • Hybrid integration with L-band for added resilience and uptime

This architecture ensures high-speed performance, even in remote or high-demand environments.

Key Benefits of Inmarsat GX

True Global Coverage

GX provides seamless connectivity across most of the globe, from offshore vessels to remote land operations, using a single, unified network.

High-Speed Broadband

Supports bandwidth-intensive applications including video streaming, VoIP, VPN access, and cloud-based systems, with speeds up to 50 Mbps.

Reliable & Resilient

Integrated with Inmarsat’s L-band network, GX offers built-in redundancy, ensuring continuous connectivity even in challenging conditions.

Scalable & Flexible

From portable terminals to fixed installations, GX supports a wide range of deployment scenarios with flexible airtime plans and service models.

Secure Connectivity

Designed for enterprise and government use, GX supports secure IP-based communications across global operations.

GX for Different Applications

Enterprise & Remote Operations

Enable reliable connectivity for mining, energy, construction, and field teams operating in off-grid environments.

Maritime Connectivity

Deliver high-speed internet for vessels, crew welfare, and operational data with consistent global coverage.

Government & Defence

Support mission-critical communications with secure, resilient, and globally portable connectivity.

Media & Broadcasting

Transmit live video, upload large files, and maintain real-time communications from anywhere in the world.

Aviation

Provide in-flight connectivity and operational communications through GX Aviation services.

GX vs Traditional Satellite Services

Feature GX (Ka-band) L-band (e.g. BGAN)
Speed High (up to 50 Mbps) Lower bandwidth
Use Case Broadband, video, enterprise data Messaging, low-data applications
Antenna Size Medium (portable or fixed) Small, highly portable
Cost per MB Lower at scale Higher

GX is designed for high-data applications, while L-band remains ideal for backup and low-bandwidth services.

GX + L-Band: Built for Resilience

Inmarsat GX is often deployed alongside L-band services to create a dual-network solution.

This ensures:

  • Continuous uptime

  • Automatic failover

  • Reliable performance in adverse weather or network congestion

This hybrid approach delivers mission-critical connectivity with no single point of failure.

Why Choose GX from OSAT?

At OSAT, we provide access to Inmarsat GX solutions tailored to your operational needs.

  • Expert guidance on terminal selection and deployment

  • Flexible airtime and service packages

  • Support across enterprise, maritime, and government sectors

  • Integration with multi-network solutions including L-band backup

We help you design a connectivity solution that works wherever you operate.