Here's a PDF description of Superbird, fairly general though and very little detailed information. http://www.ssloral.com/prod_serv/products/datashts/super.pdf Here's a more detailed description of the satellite bus, which is also used for many other customers. The basic bus remains the same but the specifics (number of transponders and power, number of solar panels, size and footprints of the broadcast antenna, etc.) is customized for each customer's requirements. Obviously in the case of Superbird that means a regional beam which follows the Japanese islands, spot beams towards other important areas of interest, a semi-hemispheric beam for international communications, etc. http://www.ssloral.com/prod_serv/products/fs1300.html Philip Chien, KC4YER Earth News world (in)famous writer, science fiction fan, ham radio operator, all-around nice guy, etc.