SpaceX Buys 800 MHz Spectrum, Sets Sights on US Carriers

SpaceX has agreed to purchase a nationwide block of low-band wireless spectrum, a move the company frames as the foundation for turning Starlink Mobile into a standalone US carrier rather than a satellite accessory riding on someone else’s network. The seller is Grain Management, a private investment firm that confirmed it will hand over 100% of its nationwide 800 MHz portfolio. That portfolio spans up to 14 MHz of paired spectrum across the 817–824 MHz and 862–869 MHz bands. Financial terms were not released, and the transaction still requires approval from the FCC.

Grain had only recently come into possession of those licenses itself, acquiring them from T-Mobile in a deal that closed in August through a combination of cash and its own 600 MHz spectrum. Before SpaceX entered the picture, rival AST SpaceMobile had been running satellite tests on the same bands, adding a competitive wrinkle to the purchase.

According to SpaceX, the two spectrum layers will serve distinct purposes. Its 2 GHz holdings, obtained through last year’s EchoStar acquisition, are geared toward high-bandwidth capacity. The new 800 MHz layer is built for penetration, allowing signals to push through walls and reach devices indoors. Because most phones on the market already support the band, SpaceX says subscribers won’t need new hardware. The crucial distinction is that the Grain spectrum is designed for ground-tower service rather than satellite links. SpaceX claims the combination will make Starlink Mobile the first network operator to deploy both satellite and terrestrial spectrum.

The announcement lands shortly after a significant regulatory victory. Earlier this week, the FCC greenlit SpaceX’s plan to launch 15,000 second-generation Starlink Mobile satellites, which the company says will deliver up to 100 times the data density of the current constellation. Shares of AT&T, Verizon, and T-Mobile all slipped in extended trading following the news. T-Mobile occupies the most awkward position of the trio, since it currently serves as SpaceX’s launch partner for Starlink Mobile in the US.

SpaceX leadership has not been coy about the ambition. On the company’s August earnings call, President and COO Gwynne Shotwell said she expects Starlink Mobile to peel customers away from the major carriers, citing better coverage in dead zones and stronger resilience during disasters. She also outlined plans for low-cost cellular base stations that would work alongside existing Starlink dishes. SpaceX is targeting 2027 for the launch of its next-generation Starlink Mobile satellites, with upgraded service anticipated by the end of that year. How soon the terrestrial half of the network can go live now hinges on the FCC’s review of the Grain deal.