Mbsat

---

General

Designation	28184 / 04007A
Launch date	13 Mar 2004
Country of origin	Japan & South Korea
Mission	Telecommunications
Geostationary orbit	see below
Launch vehicle	Atlas 3 #144

Satellite build + launch cost: $235 million

The satellite initially owned by SK Telecom (South Korea, 34.66%) and MBC (Japan, 65.34%). MBC (Mobile Broadcasting Corporation) is a partnership of 42 Japanese companies - including Fujitsu Ltd., Matsushita Electric/Panasonic, Nippon TV, Toshiba Corp. and Toyota Motor.

Delivers digital multimedia information services such as CD-quality audio, MPEG-4 video and data to mobile users throughout Japan. Delivers mobile television services (handsets and in-vehicle equipment). Service was discontinued in March 2009 because of financial issues.

---

Location

Begin	End	Position
L: 13 Mar 2004	Jun 2013	144°E
Aug 2013	Feb 2014	75°E
Mar 2014	Oct 2014	63°E
Nov 2014	Jan 2020	61°E
Jan 2020		61°E inclined

---

External resources

http://www.mbco.co.jp/

sat-index articles

Technical data

---

Lyngsat transponder loading

---

Specifications

Prime contractor	SS/L
Platform	FS-1300
Mass at launch	4143 kg
Mass in orbit
Dimension
Solar array	31 m span
Stabilization	3-axis
DC power	EOL: 7.4 kW
Design lifetime	12 years

12-meter antenna. Has Stationary Plasma Thrusters (SPT) for North-South stationkeeping. These have been tested properly and are used routinely.

---

S-band

Main transponders	16 (50 audio + 16 video channels)
Backup transponders
Power	120 W
Bandwidth	1.25 MHz
Coverage	Japan and South Korea
EIRP max
G/T max
Polarization
Frequencies	2.630-2.655 GHz

Will use MPEG 4 and AAC compression.

---

Ku-band

Main transponders	4
Backup transponders
Power
Bandwidth	25 MHz
Coverage	Japan and South Korea
EIRP max
G/T max
Polarization

Two of these transponders are to feed terrestrial repeaters.

---