AST SpaceMobile (NASDAQ: ASTS) has taken a significant step forward in its Brazilian deployment strategy, announcing plans for four ground gateways in the country. The company also clarified its spectrum access, which includes permission for up to 20 MHz of regional carrier spectrum, complementing its existing 30 MHz of S-band rights. These developments are integral to the company's proposed satellite-to-phone broadband service, which aims to connect standard smartphones directly to its satellite constellation.
The announcement, made on Monday, October 26, 2026, provides clarity on the technical and regulatory framework for the service. The carrier spectrum access is limited to partners' licensed areas and carries secondary status, meaning it operates on a non-interference basis with primary users. This is a distinct permission from AST's separate 30 MHz of S-band rights, and the two cannot be combined to create a nationwide 50 MHz channel, as some might have speculated.
The gateways are part of a broader test of deployment readiness. AST's technical description outlines the traffic flow: from a handset to a satellite, then to a gateway, and finally to a mobile operator's network. Ground processing at the gateways compensates for signal delay and Doppler frequency shifts, which are critical for maintaining connection quality in satellite communications. Merely having spectrum access does not complete this chain; the infrastructure must be in place and operational.
Spectrum Details and Regional Partners
AST's spectrum permissions can be broken down as follows: its S-band allocation is paired at 15 + 15 MHz, totaling 30 MHz, while the regional 700 MHz spectrum allows up to 10 + 10 MHz, totaling 20 MHz, within partners' licensed areas. These paired totals represent both uplink and downlink directions, so they do not describe a single channel for downloading data to a phone. Moreover, authorized bandwidth does not directly translate to throughput for individual users; a Brazilian service specification would still need to address device eligibility and capacity allocations for participating carriers.
The company has reported four regional operator agreements, though it has not named all of them. A filing by Unifique on October 23 identified three participants: Unifique, Brisanet, and Iez! Telecom, noting their 700 MHz holdings but without specifying a satellite allocation. Brisanet's separate filing indicates that regional carriers will be responsible for infrastructure investments, connecting their mobile networks to AST's constellation through ground gateways. However, final contractual details remain under negotiation, and neither filing provided a gateway count.
Progress and Remaining Uncertainties
Comparing the October 23 filings with Monday's announcement shows measurable progress: carrier bandwidth went from unspecified to up to 20 MHz, gateway count from unspecified to four planned, and operators from three named to four reported. AST's CEO, Abel Avellan, emphasized the company's approach: “We are bringing together the spectrum, operator relationships and ground infrastructure.”
The regional carriers describe a service for ordinary, unmodified smartphones outside terrestrial coverage, supporting calls, broadband, and video streaming. However, Unifique's filing makes the transaction conditional, including obtaining necessary regulatory authorizations and licenses. This indicates that the commercial ambition is broader than a completed network deployment.
Brazil's telecom regulator, Anatel, has established a testing framework that permits temporary frequency authorizations for direct-to-device (D2D) experiments, with a current end date of April 22, 2029. This framework can end earlier if definitive rules are adopted, and Anatel can also terminate it before that date. This experimental route concerns mobile-service spectrum used for satellite tests, and it does not make every spectrum permission equivalent to an unrestricted commercial service. This distinction is particularly relevant to the carrier-held 700 MHz route, and AST's S-band rights should not be conflated with the testing timetable.
Market Context and Risks
Independent reporting by Teletime on October 23 found no announced activation date or retail prices for the service. As a result, customers have no published Brazilian offer against which to assess the spectrum permissions. Operator-specific service details are still needed to evaluate the viability and pricing of the offering.
Several risks remain. Gateway construction and operator integration could delay availability even after spectrum approval. Unfinished contract terms leave investment responsibilities incompletely specified. Required licenses and handset compatibility add further execution uncertainty. Additionally, each operator's capacity allocation remains undisclosed, raising questions about how much busy-hour traffic each will handle and which gateway sites will carry it.
AST SpaceMobile's Brazilian initiative is part of a broader push to commercialize satellite-to-phone connectivity. The company's progress in securing spectrum and infrastructure is notable, but the path to a fully operational service still requires navigating regulatory approvals, finalizing contracts, and building out the necessary ground and space assets.
