Monthly Archives: December 2022

Direct-to Handset Satellites: Are They Doing it Wrong?

Direct-to-handset (DTH) satellite service is better off using millimeter wave spectrum than mobile spectrum. The three models prevailing today – spectrum infill, spectrum slice, and over-the-top – have inherent challenges that limit market access (see my previous post). In this post, I share a perspective on how to improve the commercial viability of DTH constellations using mmWave spectrum.… Read More »

How the Different Direct-to-Handset Satellite Constellations Stack Up

Update – May 23, 2023: We have published a report detailing the technical performance of AST Space Mobile direct-to-handset LEO constellation. Click here for additional information. Different approaches are possible to enable Direct-to-Handset (DTH) satellite connectivity. For instance, there’s the approach by T-Mobile and SpaceX (see here) and by Apple and Globalstar (see here). AST SpaceMobile is taking… Read More »