Satellite, Communications, Sirius FM-4

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    IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu

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    Satellite, Communications, Sirius FM-4, SATELLITE, COMMUNICATIONS, SIRIUS FM-4

    Rectangular solid, covered in black wrap; circular antenna deployed on one side; array of antennas on top; propulsion bell on bottom; blue-tinted solar arrays in stowed position on two sides.

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    Usage Conditions Apply

    There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page.

    IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu

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    Satellite, Communications, Sirius FM-4, SATELLITE, COMMUNICATIONS, SIRIUS FM-4

    Rectangular solid, covered in black wrap; circular antenna deployed on one side; array of antennas on top; propulsion bell on bottom; blue-tinted solar arrays in stowed position on two sides.

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    Usage Conditions Apply

    There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page.

    IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu

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    Satellite, Communications, Sirius FM-4, SATELLITE, COMMUNICATIONS, SIRIUS FM-4

    Rectangular solid, covered in black wrap; circular antenna deployed on one side; array of antennas on top; propulsion bell on bottom; blue-tinted solar arrays in stowed position on two sides.

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    Usage Conditions Apply

    There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page.

    IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu

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    Satellite, Communications, Sirius FM-4, SATELLITE, COMMUNICATIONS, SIRIUS FM-4

    Rectangular solid, covered in black wrap; circular antenna deployed on one side; array of antennas on top; propulsion bell on bottom; blue-tinted solar arrays in stowed position on two sides.

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    Usage Conditions Apply

    There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page.

    IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu

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    Satellite, Communications, Sirius FM-4, SATELLITE, COMMUNICATIONS, SIRIUS FM-4

    Rectangular solid, covered in black wrap; circular antenna deployed on one side; array of antennas on top; propulsion bell on bottom; blue-tinted solar arrays in stowed position on two sides.

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    Usage Conditions Apply

    There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page.

    IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu

    View Manifest

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    Satellite, Communications, Sirius FM-4, SATELLITE, COMMUNICATIONS, SIRIUS FM-4

    Rectangular solid, covered in black wrap; circular antenna deployed on one side; array of antennas on top; propulsion bell on bottom; blue-tinted solar arrays in stowed position on two sides.

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    Usage Conditions Apply

    There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page.

    IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu

    View Manifest

    View in Mirador Viewer

    Satellite, Communications, Sirius FM-4, SATELLITE, COMMUNICATIONS, SIRIUS FM-4

    Rectangular solid, covered in black wrap; circular antenna deployed on one side; array of antennas on top; propulsion bell on bottom; blue-tinted solar arrays in stowed position on two sides.

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    Usage Conditions Apply

    There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page.

    IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu

    View Manifest

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    Satellite, Communications, Sirius FM-4, SATELLITE, COMMUNICATIONS, SIRIUS FM-4

    Rectangular solid, covered in black wrap; circular antenna deployed on one side; array of antennas on top; propulsion bell on bottom; blue-tinted solar arrays in stowed position on two sides.

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This satellite represents the first generation of space-based, commercial radio service developed by Sirius Radio, a U.S. company (now Sirius XM Radio). Designed in 1987 and initiating service in 2001, the Sirius satellite system consisted of three satellites that provided more than 150 digital music and audio channels to North America. Their inclined geosynchronous orbits were a distinctive design feature that enabled clear radio reception over the entire country.

This FM-4 spacecraft was built as a flight-ready backup for the system but never used. The round antenna on the side of the spacecraft transmits radio signals to the ground. The solar panels are stowed as if for launch. Fully opened in orbit, they would span more than 24 meters (78 feet).

Sirius XM Radio and Space System Loral donated the satellite to the Museum in 2012.