6 May 2025 – Iridium Communications Inc., a leading provider of global voice and data satellite communications, today announced a special U.S. government version of the Iridium® 9603 module built for Enhanced Short Burst Data (ESBD). ESBD is a low-latency and secure messaging service designed to provide optimal transmission security (TRANSEC) for the U.S. government and approved allies. The ESBD version can act as a drop-in replacement for the existing Iridium 9603 Short Burst Data® (SBD®) module. Alongside Iridium’s known reliability and resiliency, Iridium 9603 ESBD can deliver secure one- or two-way messaging with an increased payload capacity for mobile-originated (MO) and mobile-terminated (MT) messages. Example applications range from command and control (C2) and image data transfer to personnel and asset tracking. Read more