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Rival Demands SpaceX Stop Cellular Starlink Tests, Citing Interference

Omnispace urges the FCC to force SpaceX to stop the tests, claiming the radio interference risks disrupting its communication network.

 & Michael Kan Principal Reporter

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SpaceX's Starlink network for cell phones is generating radio interference, according to a competing company that's urging US regulators to intervene. 

On Friday, Omnispace—which is also trying to bring satellite connectivity to phones—told the FCC that SpaceX’s ongoing tests for its cellular Starlink service are interfering with Omnispace's own satellite activities. 

"SpaceX’s operations violate the terms of its experimental authorization and must cease," Omnispace told the FCC in a 43-page regulatory filing

In addition, the company claims to possess "empirical evidence" that the cellular Starlink satellites are generating additional radio noise, reports SpaceNews. “You see the noise floor on our satellites increase to the degree that services cannot be provided,” Omnispace VP George Giagtzoglo reportedly said during the International Telecoms Week conference. 

(Credit: Omnispace)

The filing also includes a presentation that claims to show how the first cellular Starlink satellites launched in orbit can cause radio interference to Omnispace's single “Omni-F2" medium Earth orbit satellite despite being over 17,000 kilometers apart. 

"Study finds significant in-band (1990-1995 MHz) interference risk,” the presentation says. “Omnispace has confirmed a single Starlink DTC satellite creates unacceptable interference levels into its F2 satellite on multiple occasions – future operations of hundreds or thousands of Starlink satellites will render the band unusable by other MSS operators over large portions of the globe."

(Credit: Omnispace)

The interference claims could threaten the cellular Starlink service, which is slated to launch later this year for T-Mobile subscribers. SpaceX didn’t immediately respond to a request for comment, possibly because it's still analyzing the Omnispace presentation. But in its own FCC filing on Friday, SpaceX pushed back on the allegations, saying that Omnispace refuses to coordinate its satellite operations with SpaceX.

"I am writing to follow up on our multiple requests to coordinate operations over the past six months. We are surprised by Omnispace’s unwillingness to respond to our requests," SpaceX VP for Satellite Policy David Goldman wrote to the FCC.

Omnispace's presentation notes: “Repeated requests by SpaceX to 'coordinate' have no legal basis. [T]herefore operational systems like Omnispace that are compliant with the ITU RR [International Telecommunication Union Radio Regulations] do not have an obligation to coordinate.”

The FCC did not immediately respond to a request for comment. But in Omnispace’s filing, the company says it met with FCC officials last week "to document the harmful interference SpaceX continues to cause to Omnispace’s operations." Th

This is not the first time SpaceX and Omnispace have clashed in FCC regulatory filings.

About Our Expert

Michael Kan

Michael Kan

Principal Reporter

My Experience

I've been a journalist for over 15 years. I got my start as a schools and cities reporter in Kansas City and joined PCMag in 2017, where I cover satellite internet services, cybersecurity, PC hardware, and more. I'm currently based in San Francisco, but previously spent over five years in China, covering the country's technology sector.

Since 2020, I've covered the launch and explosive growth of SpaceX's Starlink satellite internet service, writing 600+ stories on availability and feature launches, but also the regulatory battles over the expansion of satellite constellations, fights with rival providers like AST SpaceMobile and Amazon, and the effort to expand into satellite-based mobile service. I've combed through FCC filings for the latest news and driven to remote corners of California to test Starlink's cellular service.

I also cover cyber threats, from ransomware gangs to the emergence of AI-based malware. In 2024 and 2025, the FTC forced Avast to pay consumers $16.5 million for secretly harvesting and selling their personal information to third-party clients, as revealed in my joint investigation with Motherboard.

I also cover the PC graphics card market. Pandemic-era shortages led me to camp out in front of a Best Buy to get an RTX 3000. I'm now following how the AI-driven memory shortage is impacting the entire consumer electronics market. I'm always eager to learn more, so please jump in the comments with feedback and send me tips.

The Best Tech I've Had:

  • My first video game console: a Nintendo Famicom
  • I loved my Sega Saturn despite PlayStation's popularity.
  • The iPod Video I received as a gift in college
  • Xbox 360 FTW
  • The Galaxy Nexus was the first smartphone I was proud to own.
  • The PC desktop I built in 2013, which still works to this day.

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