High-Speed L-Band Anywhere on Earth - Iridium Certus® offers superior connectivity for maritime customers.
Highest Availability - L-Band is the lowest frequency commonly available for maritime satellite communications, meaning that the Iridium® signal can penetrate clouds, fog, and rain better than higher frequency Ka- and Ku- band signals.
The Iridium Satellite Network uses a Low Earth Orbit (LEO) constellation of 66 cross linked satellites orbiting the Earth. No matter where you are there will always be an Iridium satellite close to your
location to pick up your satellite signal quickly so you can make a call.