C波段
Galaxy 23 is the name given to the C-band service of the Galaxy 23/EchoStar 9 communications satellite jointly owned by Intelsat and EchoStar located at 121° W longitude, serving the North American market. It was built by Space Systems/Loral, as part of its FS-1300 line. Galaxy 23 was formerly known as Intelsat Americas 13. The "Galaxy 23" portion of the service provides transponders in the C band. The "EchoStar 9" portion broadcasts Ku band, and Ka band transponders.