The Federal Communications Commission (FCC) has formally rejected a series of high-profile petitions aimed at restructuring the licensing framework for Mobile Satellite Services (MSS) spectrum, a move that solidifies the market positions of incumbent operators while providing a clear, albeit restricted, regulatory path for the burgeoning direct-to-device (D2D) sector. In a comprehensive order released on Thursday, the commission reaffirmed the exclusive operating rights of Globalstar and Iridium within the "Big LEO" spectrum band, a critical swath of frequencies used for Non-Geostationary Orbit (NGSO) satellite operations. By dismissing requests from industry giants such as SpaceX and AST SpaceMobile to open these bands for wider sharing, the FCC has signaled its commitment to regulatory stability and the protection of long-term infrastructure investments over the immediate demands of new market entrants.
The Preservation of the Big LEO Band Plan
The "Big LEO" band, which encompasses frequencies in the 1.6 GHz and 2.4 GHz ranges, has been the backbone of mobile satellite connectivity for decades. For years, this spectrum has been managed under a framework that prioritizes the operational integrity of established systems. The FCC’s latest ruling serves as a definitive "no" to the concept of complex spectrum-sharing in these specific bands, concluding that the technical hurdles of preventing harmful interference remain insurmountable under current proposals.
The commission’s decision specifically dismissed a coordinated push by SpaceX, Kepler Communications, Sateliot, and AST SpaceMobile. These companies had sought market access to portions of the MSS spectrum to expand their own satellite-to-phone and Internet of Things (IoT) services. Furthermore, the order dismissed a broader request by SpaceX to overhaul the entire MSS licensing regime to allow for new entrants, as well as a counter-request from Iridium to revise the existing Big LEO plan in a different direction.
In its rationale, the FCC emphasized the "reasonable expectations" of current licensees. Globalstar and Iridium have spent billions of dollars and several decades developing sophisticated constellations that serve critical maritime, aviation, and emergency response sectors. The order noted that these operators designed their hardware and network architectures around the guarantee of exclusive spectrum use. To introduce new, high-capacity systems into the same frequency blocks would, in the FCC’s view, risk the continuity of services that millions of users rely on for safety and global connectivity.
A Mixed Regulatory Outcome for SpaceX
While the ruling represents a setback for SpaceX’s ambitions to utilize the Big LEO band for its Starlink Gen2 constellation, the decision was not a total loss for the Hawthorne-based aerospace company. The regulatory clarity provided by the FCC actually serves to validate SpaceX’s secondary strategy: the acquisition of existing licensed spectrum rather than the pursuit of shared access.
The FCC’s order addressed requests concerning the 2 GHz spectrum band, which is currently incumbent to EchoStar (now part of the Dish Network ecosystem). While the FCC rejected the petitions of Sateliot and AST SpaceMobile to enter the 2 GHz band—upholding the principle that this band remains restricted to a single primary operator—it paved the way for the transfer of these rights. Following the blockbuster spectrum sale between EchoStar and SpaceX announced in September 2025, SpaceX is poised to become the primary beneficiary of this 2 GHz exclusivity.
This creates a bifurcated reality for the D2D market. While SpaceX cannot "share" the 1.6 GHz or 2.4 GHz bands used by Globalstar and Iridium, it has secured a proprietary lane in the 2 GHz band. This spectrum is highly valued for its ability to penetrate buildings and provide reliable links to unmodified consumer smartphones, a cornerstone of SpaceX’s "Direct to Cell" initiative.
Amazon’s Strategic Entry via Globalstar
The FCC’s decision to maintain the status quo in the Big LEO band takes on additional weight in light of Amazon’s recent moves in the space sector. In April 2026, Amazon announced its intention to acquire Globalstar, a move designed to give its Project Kuiper satellite constellation a significant leg up in the race for mobile connectivity.
By reaffirming Globalstar’s exclusive rights, the FCC has essentially protected the value of Amazon’s acquisition. Had the commission allowed SpaceX or AST SpaceMobile to share Globalstar’s spectrum, the strategic advantage of Amazon’s purchase would have been severely diluted. Instead, the ruling ensures that Amazon will control a "clean" block of spectrum as it seeks to compete with SpaceX in providing satellite-linked cellular services. This creates a competitive landscape where the two wealthiest private space entities—SpaceX and Amazon—each hold exclusive, non-overlapping spectrum assets, effectively creating a duopoly in the premium MSS bands.
Technical Barriers and the Interference Argument
A primary factor in the FCC’s refusal to allow spectrum sharing was the risk of "aggregate interference." In the complex world of orbital mechanics, thousands of satellites moving at high speeds across the sky must communicate with ground devices without drowning out the signals of neighboring systems.
The FCC concluded that the proposals submitted by SpaceX and others did not sufficiently prove that they could operate without degrading the performance of Globalstar and Iridium’s existing links. The commission noted that the current Big LEO structure has fostered an environment of "investment, growth, and innovation" precisely because operators do not have to worry about sudden, unpredictable interference from new neighbors. The order highlighted that the "regulatory and technical environment" of the band is tuned to the specific needs of low-power mobile devices, which are particularly susceptible to noise.
This technical conservative stance reflects a broader FCC philosophy under the current leadership: while innovation is encouraged, it must not come at the expense of "service continuity." The ability for Iridium and Globalstar to replace their aging satellites with next-generation hardware depends on long-term spectral certainty, which the FCC has now reaffirmed.
Chronology of the MSS Spectrum Battle
The path to this week’s ruling has been marked by years of intense lobbying and legal maneuvering. The timeline of this regulatory saga illustrates the high stakes involved in the "space race" for cellular connectivity:
- 1994: The FCC establishes the original "Big LEO" band plan, carving up spectrum for the first generation of mobile satellite providers.
- Early 2020s: The rise of Starlink and the miniaturization of satellite technology spark renewed interest in using MSS spectrum for consumer smartphones.
- March 2024: The FCC dismisses an initial request by SpaceX to modify its Starlink Gen2 application to include MSS components using Globalstar and Dish spectrum.
- September 2025: SpaceX reaches a definitive agreement to purchase 2 GHz spectrum assets from EchoStar, pivoting from a "sharing" strategy to an "ownership" strategy.
- April 14, 2026: Amazon stuns the industry by announcing the acquisition of Globalstar, signaling its intent to enter the D2D market using Globalstar’s exclusive L-band and S-band holdings.
- April 22, 2026: The FCC grants AST SpaceMobile commercial authorization for its D2D service, showing a willingness to approve new entrants who use terrestrial cellular spectrum (via partnerships with carriers like AT&T) rather than encroaching on existing MSS bands.
- April 23, 2026: The FCC issues the current order, finalizing the licensing framework for the Big LEO and 2 GHz bands and dismissing the sharing petitions.
Official Responses and Market Impact
The reaction from the FCC leadership suggests that this ruling is intended to be the final word on the matter for the foreseeable future. FCC Chairman Brendan Carr characterized the decision as a win for the American consumer, arguing that clarity in the rules is the most important ingredient for the next phase of telecommunications growth.
"The FCC is laser-focused this year on making our rules as friendly as possible for investment and innovation in D2D services," Carr stated. "We are taking important actions this week to give this exciting industry the clarity it needs to build satellite systems and invest in spectrum confidently."
Industry analysts suggest that the ruling will likely lead to a surge in partnership activity. Since the FCC has made it clear that new entrants cannot simply "ask" to share MSS spectrum, companies like Sateliot and Kepler may be forced to either seek spectrum in other, less crowded bands or negotiate roaming and hosting agreements with the "Big Three" of the MSS world: SpaceX, Amazon/Globalstar, and Iridium.
For AST SpaceMobile, the ruling is a double-edged sword. While they were denied access to the 2 GHz MSS band, their separate authorization to use terrestrial spectrum in partnership with mobile network operators (MNOs) provides a different path to market. This "Supplemental Coverage from Space" (SCS) model appears to be the FCC’s preferred method for expanding D2D services without disrupting the legacy satellite ecosystem.
Broader Implications for Global Satellite Policy
The FCC’s decision has implications far beyond the borders of the United States. As the primary regulator for many of the world’s largest satellite constellations, the FCC’s stance often sets the tone for the International Telecommunication Union (ITU) and other national regulators. By upholding exclusivity in the Big LEO bands, the U.S. is signaling a global preference for stable, licensed spectrum blocks over the "dynamic sharing" models that some technology advocates have championed.
This stability is expected to bolster the valuation of satellite companies with existing licenses. It also clarifies the competitive landscape for global smartphone manufacturers. Apple, which currently relies on Globalstar for its emergency satellite messaging, now sees its partner’s spectrum protected from interference by SpaceX. Conversely, T-Mobile’s partnership with SpaceX is strengthened by the confirmation that SpaceX’s acquired 2 GHz spectrum will remain an exclusive lane for their D2D traffic.
As the industry moves toward the late 2020s, the "Spectrum Wars" in low Earth orbit appear to be shifting from the courtroom to the launchpad. With the regulatory boundaries now clearly drawn, the success of SpaceX, Amazon, and their competitors will depend on who can most efficiently deploy their hardware and capture the global market for "anywhere, everywhere" connectivity. The FCC has laid the tracks; the race now belongs to the engineers and the investors.