The popular and versatile Boeing 376 spin-stabilized spacecraft is one of the world's most-purchased commercial communications satellite models. The first satellite to be launched by the space shuttle, the 376 is built by Boeing Satellite Systems, formerly Hughes Space and Communications Company. All Hughes 376 models have two telescoping cylindrical solar panels and antennas that fold for compactness during launch. The basic bus accommodates a wide range of customized payloads, and the satellite can be boosted by any of the world's major launch vehicles. The 376 spacecraft is available in several configurations ranging from 800 to 2,000 watts and typically features 24 transponders in C- or Ku-band, or a combination of both.