Por AST Networks en América Latina (LATAM)

In the world of satellite communications, two names frequently stand out: Iridium y Inmarsat. Both are global leaders in satellite connectivity, but they serve distinct needs with very different infrastructures and capabilities. If you’re considering satellite solutions for your organisation, understanding the differences between Iridium and Inmarsat is essential. 

1. Satellite Constellation and Coverage 

Iridium operates a constellation of 66 low earth orbit (LEO) satellites, orbiting and approximately 780km above the Earth. These satellites move rapidly across the sky, allowing Iridium to deliver truly global coverage, including the poles. 

Inmarsat uses a network of geostationary (GEO) satellites. These satellites orbit at 35,786km above the equator and appear fixed in the sky. While Inmarsat offers near-global coverage, its service does not extend to the extreme polar regions. 

2. Latency and Performance 

Because its satellites are closer to Earth, Iridium’s network has lower latency, making it ideal for voice communications and low-bandwidth data transmissions in remote or mobile environments. 

GEO satellites introduce higher latency due to the longer signal path. However, Inmarsat compensates with higher bandwidth capabilities, making it better suited for broadband data, media streaming, and mission-critical applications. 

3. Device Types and Portability 

Iridium terminals are generally smaller and more portable, which is a major advantage for users on the move – including field teams, adventurers and maritime crews. 

Inmarsat offers a range of terminals, some highly portable like the BGAN series, but others are designed for fixed or vehicular installations, particularly where high-speed data is critical. 

4. Use Cases 

Iridium is ideal for: 

• Voice and text communication in remote regions 

• Maritime safety (GMDSS compliant) 

• Tracking and IoT applications 

Inmarsat is preferred for: 

• High-speed broadband in maritime 

• Enterprise and government-grade communications 

• Broadcast media and remote field operations 

• Emergency response and backup connectivity 

5. Network Reliability and Resilience 

Both Iridium and Inmarsat have a strong track record for uptime and reliability. However, Iridium’s mesh architecture allows for inter-satellite links, enabling calls to be routed through space without depending on ground stations. Inmarsat relies more heavily on ground infrastructure, which can be a factor depending on the operating environment. 

Choosing between Iridium and Inmarsat depends on your specific needs. Whether it’s truly global coverage with mobile voice from Iridium, or higher-throughput broadband with Inmarsat, AST Networks provides the expertise and solutions to keep you connected – wherever your mission takes you. 

Need help choosing the right satellite network? 

Contact AST Networks today – our specialists are here to guide you through the best connectivity options for your environment, budget, and mission, whether that's Iridium and Inmarsat, or another supplier. 

Whether you're venturing off-grid, managing remote operations, or simply ensuring global connectivity, it's essential to choose the right satellite communication tools. At AST Networks, we proudly offer a wide selection of Iridium y Inmarsat products - two of the most trusted names in satellite technology. Iridium delivers truly global coverage, even at the poles, with unmatched reliability in extreme conditions. Inmarsat, on the other hand, offers robust, high-speed data solutions ideal for maritime, aviation, and enterprise applications. Each has unique strengths, and the right choice depends on your specific needs and uses. Visit our website to explore the full range of devices, service plans, and accessories. Compare Iridium and Inmarsat models side by side, and find the satellite communication solution that fits your lifestyle or business operations perfectly.

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AST Networks is a global leader in satellite communications, safety services, and intelligent maritime electronics solutions. From commercial shipping and offshore energy to defence and polar research, AST Networks delivers cutting-edge systems that keep vessels connected, secure, and compliant — wherever they are in the world.  

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