One Spacecraft for Two Missions

Customer	PanAmSat Corp., Wilton, Conn. JSAT International Inc.
Spacecraft	Boeing 601HP
Launch    Date    Vehicle    Site	Sept. 30, 2003 Sea Launch Pacific Ocean
Orbital Slot	127° West Longitude
Contract life	15 years

PanAmSat Corp. and JSAT International Inc. selected Boeing Satellite Systems in mid-2001 to build a new Boeing 601HP spacecraft in support of the two companies' joint venture, Horizons, as well as PanAmSat's domestic U.S. cable program distribution offerings. The satelllite was launched successfully on September 30, 2003, aboard a Sea Launch booster. This is the 23rd Boeing-built satellite and the ninth Boeing 601HP ordered by PanAmSat.

From its orbital slot at 127 degrees west longitude, between the Hawaiian Islands and the U.S. West Coast, the new satellite has coverage over North America, Puerto Rico, Alaska, Hawaii and Mexico.

The spacecraft carries a total of 48 active transponders, 24 in Ku-band and 24 in C-band. The spacecraft's Ku-band payload, known as Horizons-1, was constructed for the Horizons partnership and will be jointly owned by PanAmSat and JSAT. It will be used to offer a variety of digital video, Internet and data services. Using a Hawaii-based relay station, the satellite's Ku-band payload also will be able to deliver content and services between the United States and Asia.

The C-band portion of the new spacecraft is known as Galaxy XIII and will be operated separately as part of PanAmSat's Galaxy cable neighborhood, which serves the domestic U.S. cable industry. Galaxy XIII will be used to replace capacity on Galaxy IX, which is a Boeing 376 model that will move to a new orbital position and continue to provide services.

Horizons-1's 24 Ku-band transponders are each powered by 108-watt linear traveling wave tube amplifiers (LTWTAs). Galaxy XIII's 24 C-band transponders are each powered by 40-watt LTWTAs. The spacecraft's solar wings feature dual-junction gallium arsenide solar cells manufactured by Spectrolab, Inc., a Boeing subsidiary. These cells will deliver 9.9 kilowatts of power at the beginning of the satellite's 15-year design life.

All Boeing 601 spacecraft use the same basic bus design, allowing the company to realize efficiencies gained by production volume, tooling investments and quantity buys. The 601 satellite was introduced in 1987, and it has become the world's best-selling large satellite model, with 83 ordered by the third quarter of 2001. The standard 601 model, with silicon solar panels, provides up to 5 kilowatts at beginning of life. The 601HP version uses gallium arsenide solar panels and other technological advances to double the power.

The Boeing 601 body is composed of two modules. The first contains the primary bus structure that carries all launch vehicle loads and contains the propulsion subsystem, bus electronics and battery packs. The second payload module is a structure of honeycomb shelves that hold the communications equipment, electronics and isothermal heat pipes. Reflectors, antenna feeds, and solar arrays mount directly to the payload module, and antenna configurations can be placed on three faces of the bus. This modular approach allows work to proceed in parallel, thereby shortening the manufacturing schedule and test time.

PanAmSat Corporation is the premier provider of global video and data broadcasting services via satellite. Operating a global network of 21 in-orbit spacecraft and seven technical facilities, the company delivers entertainment and information to cable television systems, TV broadcast affiliates, direct-to-home TV operators, Internet service providers, telecommunications companies and corporations worldwide.

JSAT is a leading satellite operator in the Asia-Pacific region. The company owns and operates eight satellites in seven orbital slots. JSAT provides communications and broadcasting services that offer a range of unique features made possible by satellite communications, which is well suited to support the high-volume, wide-distribution, high-speed networks.

Boeing Satellite Systems is the world's leading manufacturer of commercial communications satellites, and is also a major provider of space systems, satellites, and payloads for national defense, science and environmental applications.