Researchers Detect Starshield Transmissions on Unexpected Frequencies
A constellation of classified defense satellites operated by SpaceX appears to be transmitting radio signals outside conventional parameters, sparking concern among space communication experts. Observations suggest that Starshield, a U.S. government defense project managed by SpaceX, is downlinking data to Earth using frequency bands typically reserved for uplink transmissions from the ground.
The discovery points to a possible deviation from international standards set by the International Telecommunication Union (ITU), which regulates global radio spectrum usage.
Accidental Discovery and Technical Findings
The signal was first detected by Scott Tilley, an amateur satellite tracker in Canada, who stumbled upon the emissions while monitoring unrelated frequencies. The transmissions appeared within the 2025–2110 MHz range, normally reserved for Earth-to-space communications. After comparing the data with global satellite-tracking databases, Tilley identified the source as part of the Starshield network.
Since May 2024, the National Reconnaissance Office (NRO) has launched several Starshield satellites as part of its plan to enhance communication resilience and data delivery speed. So far, signals from over 170 satellites have been detected operating in this frequency band.
Theories on the Intent Behind the Signals
Experts remain divided on the purpose of the transmissions. Some suggest that SpaceX may be leveraging a quieter portion of the radio spectrum to minimize interference or conceal operational activity. Others argue that the unconventional use of frequencies may have a purely technical justification.
Although no major disruptions have been reported, analysts emphasize the need for greater transparency and coordination to prevent potential interference and ensure the safe coexistence of government, commercial, and scientific satellites in orbit.
