Comtech modem earns first sovereign certification for SES O3b mPOWER networkby Clarence OxfordLos Angeles CA (SPX) Sep 17, 2025Comtech Telecommunications Corp. (NASDAQ: CMTL) has announced that its software-defined SLM-5650B modem is the first sovereign-certified terminal to earn Government Terminal Certification (GTC) for operations on SES's O3b mPOWER Medium Earth Orbit (MEO) satellite constellation. The certification enables the U.S. Department of Defense (DoD) and coalition partners to deploy Comtech's modem on SES's high-throughput, low-latency O3b mPOWER system, delivering secure and reliable hybrid communications in difficult operational environments. "This certification further demonstrates our satellite communications technology leadership, as well as the trust one of the world's largest satellite owners and space solutions providers, SES, continues to place in Comtech," stated Daniel Gizinski, President of Comtech's Satellite and Space Communications Segment. The modem operates with multiple DoD and NATO waveforms, including STANAG 4486 Ed3 (EBEM), Direct Sequence Spread Spectrum (DSSS), and DVB-S2X. Related LinksComtech TelecommunicationsRead the latest in Military Space Communications Technology at SpaceWar.com