FCC officially allowed Galileo signals to be used in the US in 2018: * https://www.fcc.gov/document/fcc-approves-galileo-global-navigation-system https://www.f

FCC officially allowed Galileo signals to be used in the US in 2018: * https://www.fcc.gov/document/fcc-approves-galileo-global-navigation-system https://www.fcc.gov/document/fcc-approves-galileo-global-nav... * https://www.fcc.gov/document/fcc-approves-galileo-global-navigation-system-0 https://www.fcc.gov/document/fcc-approves-galileo-global-nav... Of course the actual signal was present in the US, but by not 'officially' blessing its use, the FCC reserved the right to use those frequencies for other things. By giving approval the FCC has basically agreed never to itself assign uses to the same frequencies, and folks don't have to worry about future conflicts.