SpaceX’s Starlink constellation continues to expand its regulatory footprint at the FCC, with a series of filings that highlight the company’s push into direct-to-cell connectivity, E-band gateway operations, and emergency disaster response. This article breaks down four key FCC filings from SpaceX, covering technical specifications, spectrum coordination, and public interest justifications.
Key Takeaways
- SpaceX requested a 60-day Special Temporary Authority (STA) for direct-to-cell demonstrations with Cape (Private Tech, Inc.) in Guam using 1965-1970 MHz and 1885-1890 MHz bands
- A separate filing seeks a 60-day extension for E-band gateway links between Gen2 satellites and earth stations, operating at 71-76 GHz and 81-86 GHz
- SpaceX filed for E-band communication testing on Gen1 satellites under non-interference basis
- An emergency STA request was made to provide Supplemental Coverage from Space (SCS) in Guam and Northern Mariana Islands during Super Typhoon Senlark using AWS-D spectrum (1735-1740 MHz uplink / 2135-2140 MHz downlink)
- All operations are conducted on a non-interference, non-protected basis with 24/7 contact points for interference resolution
Filing 1: SAT-STA-20260605-00229 — Direct-to-Cell Demonstration in Guam
SpaceX requested a 60-day Special Temporary Authority to conduct direct-to-cell demonstrations with its Supplemental Coverage from Space (SCS) partner Cape (Private Tech, Inc.) in Guam. The demonstration would use the 1965-1970 MHz and 1885-1890 MHz frequency bands, connecting Starlink’s direct-to-cell antenna to cellular test equipment.
According to the filing, Cape is the sole authorized user of the relevant spectrum in the test area. SpaceX has secured a spectrum access agreement with Cape and will ensure compliance with field strength limits under 47 CFR §24.236. The company committed to a power flux density limit of -110.6 dBW/m²/MHz to protect adjacent-frequency operators in the PCS G band.
SpaceX argued that imposing the stricter -120 dBW/m²/MHz limit would significantly impede its ability to provide service, limiting speed and reliability throughout the demonstration period. All operations are on a non-interference basis, with SpaceX guaranteeing no harmful interference to any other licensed services.
Filing 2: SAT-STA-20260527-00215 — E-Band Gateway Link Extension for Gen2
SpaceX requested a further 60-day extension of its STA to operate E-band gateway links between its second-generation (Gen2) satellites and gateway earth stations. The FCC had previously granted STA for these links but deferred final action on the underlying license application pending further review.
The E-band operations use 71.0-76.0 GHz (downlink) and 81.0-86.0 GHz (uplink). SpaceX emphasized that it has operated these links for months without receiving any interference complaints from authorized spectrum users. The extension enables continued testing of Gen2 satellite E-band components and preparation for growing consumer demand for high-speed, low-latency broadband.
Technical Conditions
| Parameter | Specification |
|---|---|
| Max fixed gateway stations (CONUS) | 204 |
| Max stations per 2M km² area | 76 |
| Max active uplink beams per station | 32 |
| Minimum elevation angle | 25° |
| Spurious emission limit (87-91.95 GHz) | -57.5 dBW/100 MHz |
| Coordination required with | NTIA, U.S. Federal FSS, radio astronomy observatories |
SpaceX must protect passive Earth Exploration Satellite Service (EESS) operations in the 86-92 GHz band per ITU-R RS.2017-0. The filing also requires coordination with radio astronomy observatories under footnote US161 of 47 CFR §2.106(c)(121).
Filing 3: SAT-STA-20260522-00209 — E-Band Testing for Gen1 Satellites
While SpaceX has an established record of E-band communications with its Gen2 satellites, this filing requests STA to test E-band communications on first-generation satellites. The operations would be conducted on a non-interference basis, using the same technical parameters already approved under SpaceX’s regular license.
The request aims to test Gen1 E-band capabilities and prepare for surging consumer demand that may exceed existing Ka-band backhaul capacity. SpaceX noted it has operated similar links on Gen2 for months without interference complaints, reinforcing the technical viability of E-band gateway communications.
Filing 4: SAT-STA-20260416-00165 — Emergency SCS During Typhoon Senlark
In perhaps the most compelling filing, SpaceX requested a 30-day emergency STA to provide Supplemental Coverage from Space (SCS) in Guam and the Northern Mariana Islands during Super Typhoon Senlark. The operation would use AWS-D spectrum (1735-1740 MHz uplink / 2135-2140 MHz downlink) to provide direct-to-cell service to standard mobile phones in the affected area.
SpaceX highlighted Starlink’s track record as a critical lifeline during natural disasters, including Hurricanes Helene and Milton, Cyclone Tam in New Zealand, Hurricane Melissa in Jamaica and the Bahamas, and now Super Typhoon Senlark. The emergency service enables text messaging and critical safety alerts even where terrestrial infrastructure is damaged.
The local SCS partner is PTI Pacifica (call sign WQKI630), the sole licensed operator of the relevant AWS-D spectrum in the area. Operations comply with SpaceX’s existing Part 25 and Part 5 authorizations, on a non-interference, non-protected basis.
FCC Approval for Emergency SCS Operations
The FCC approved SpaceX’s request, authorizing SCS operations in Guam and the Northern Mariana Islands for 30 days starting April 16, 2026. Key conditions of the approval include:
- All operations on non-interference, non-protected basis
- SpaceX must immediately cease operations if harmful interference occurs
- 24/7 contact point ([email protected]) with authority to halt all transmissions
- SpaceX must formally file and pay fees via the Integrated Licensing and Billing System by April 30, 2026
Comparison of SpaceX FCC Filings
| Filing | Purpose | Frequency Bands | Duration | Location |
|---|---|---|---|---|
| SAT-STA-20260605-00229 | Direct-to-Cell demo | 1965-1970 MHz, 1885-1890 MHz | 60 days | Guam |
| SAT-STA-20260527-00215 | E-band gateway extension (Gen2) | 71-76 GHz, 81-86 GHz | 60 days | CONUS |
| SAT-STA-20260522-00209 | E-band testing (Gen1) | E-band | STA | Various |
| SAT-STA-20260416-00165 | Emergency SCS (Typhoon) | 1735-1740 MHz, 2135-2140 MHz | 30 days | Guam, NMI |
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FAQ
What is a Special Temporary Authority (STA) at the FCC?
An STA is a temporary authorization granted by the FCC that allows an entity to operate radio services for a limited period, typically for testing, demonstrations, or emergency situations. STAs are granted on a non-interference basis and are subject to specific technical and operational conditions.
What is Supplemental Coverage from Space (SCS)?
SCS is a regulatory framework that allows satellite operators to provide cellular coverage directly to standard mobile phones using satellite spectrum. SpaceX’s Starlink direct-to-cell service is a leading example, enabling text, voice, and data connectivity in areas without terrestrial cell tower coverage.
Why does SpaceX need E-band gateway links?
E-band (71-86 GHz) provides high-capacity feeder links between satellites and ground stations. As Starlink’s user base grows, the existing Ka-band gateway capacity may become insufficient. E-band links offer significantly higher bandwidth, enabling SpaceX to meet surging demand for high-speed, low-latency broadband.
How does SpaceX ensure non-interference operations?
SpaceX operates STAs on a strictly non-interference, non-protected basis. The company maintains 24/7 contact points ([email protected] and [email protected]) connected to technical staff pagers. If harmful interference occurs, SpaceX must immediately cease operations and notify the FCC in writing.
What was the public interest justification for the Typhoon Senlark emergency STA?
SpaceX demonstrated that Starlink’s direct-to-cell system serves as a critical lifeline during natural disasters, enabling text messaging and emergency alerts in areas where terrestrial infrastructure is damaged. The FCC found that providing connectivity to families and first responders during Super Typhoon Senlark justified the emergency authorization.
Source: FCC official filings, compiled and translated by Aomway. 
