July 16, 2015 - China Launches Communication Satellite for Broadcasting Services

On November 3, 2015, China launched ChinaSat 2C aboard a Long March 3B/E rocket from Xichang Satellite Launch Center. Built on the DFH-4 platform, it reached geostationary orbit at roughly 35,786 km altitude. You can think of it as China's broadcasting backbone, delivering radio, TV, and broadband services across China, Southeast Asia, Europe, and beyond. It's China's 13th launch of 2015, and there's much more to uncover about what makes this satellite significant.

Key Takeaways

• China launched ChinaSat 2C on November 3, 2015, aboard a Long March 3B/E rocket from Xichang Satellite Launch Center.
• The satellite was placed into geostationary orbit at approximately 35,786 km altitude, covering China, Europe, Africa, and Southeast Asia.
• ChinaSat 2C supports radio broadcasting, TV uplink/downlink, and broadband multimedia services for cable networks and radio stations.
• Built on the DFH-4 platform, the satellite features 10.5 kW solar power, three-axis stabilization, and a 15-year design lifetime.
• The satellite strengthens China's state-owned broadcasting infrastructure and is assessed as expanding PLA strategic communications capabilities.

ChinaSat 2C: China's 2015 Broadcasting Satellite Explained

On November 3, 2015, China launched ChinaSat 2C — also known as Zhongxing-2C or ST-2C — aboard a Long March 3B rocket from the Xichang Satellite Launch Center's LA-3 pad at 12:25 a.m. Beijing time.

Despite its public cover as a broadcasting satellite, you should recognize its military applications: it's the second satellite in China's Shentong-2 series, linked directly to the PLA. Launch secrecy defined the mission — China issued no advance announcement and released minimal post-launch details.

The satellite achieved geostationary operations at roughly 35,786 km, settling near 256.97° East longitude with near-zero inclination.

It carries Ku-band steerable spot beams supporting secure military communications.

Its international implications are significant, as Western analysts assess it strengthens PLA strategic communications capabilities alongside siblings ST-2D and ST-2E. The satellite was developed by the China Academy of Space Technology to provide radio, TV transmission, and broadband services. Unlike commercial space ventures such as Axiom Space's modules, which rely on private astronaut missions and brand partnerships to generate revenue, ChinaSat 2C operates under full state funding with no commercial mandate.

This mission marked China's 13th launch of the year, reflecting the country's sustained and accelerating pace of space operations throughout 2015.

The DFH-4 Platform and Hardware Behind ChinaSat 2C

What makes ChinaSat 2C capable of delivering the secure military communications described above comes down to its hardware foundation — the DFH-4 bus, China's third-generation communications satellite platform developed by China Great Wall Industry Corporation.

The DFH-4 avionics and solar arrays combine to create a formidable operational backbone. Here's what you need to know:

1. Power: Solar arrays generate 10.5 kW at end-of-life, allocating 8 kW directly to payload operations.
2. Precision: Three-axis stabilization holds station-keeping accuracy at ±0.05 degrees with antenna pointing better than 0.1 degrees.
3. Longevity: A 15-year design lifetime nearly doubles the DFH-3's operational duration.

Together, these capabilities give ChinaSat 2C the reliability China's broadcasting infrastructure demands. The DFH-4 platform supports multiple frequency bands including C, Ku, Ka, and L, broadening its applicability across high-capacity communications, direct broadcasting, and regional mobile communications services. This represents a substantial evolution from earlier Chinese communications satellites like the DFH-2A series, which carried only two 6/4 GHz transponders rated at just 10 W each.

How ChinaSat 2C Delivers Radio, TV, and Broadband Nationwide

From its geostationary perch, ChinaSat 2C blankets China and extends its reach across Australia, Southeast Asia, South Asia, the Middle East, Europe, and Africa — delivering radio broadcasting, TV program uplink and downlink transmissions, and broadband multimedia services to cable networks and radio transmitting stations alike.

Its GEO positioning ensures signal resilience, maintaining continuous, uninterrupted coverage for broadcasting infrastructure operating around the clock.

You'll find it supporting national radio and TV distribution while integrating seamlessly with existing cable systems and regional transmitting stations.

That regional integration means diverse networks across multiple continents can rely on a single, unified satellite platform.

Transponders handle high-quality program transmissions, while broadband capabilities extend services directly to stations, making ChinaSat 2C a dependable backbone for China's space and terrestrial communications ecosystem. The ChinaSat brand itself traces back to China Telecommunications Broadcast Satellite Corporation, which was owned by the Ministry of Posts and Telecommunications before merging into China Satellite Communications Corporation around 2000. Much like how Stanford's Frederick Terman encouraged entrepreneurial ventures that built foundational technology ecosystems on the ground, satellite infrastructure such as ChinaSat 2C reflects how institutional support shapes long-term communications development at a national scale.

The Long March 3B Mission That Put ChinaSat 2C in Orbit

A Long March 3B/E rocket lifted ChinaSat 2C off Launch Area 3 at Xichang Satellite Launch Center on 3 November 2015 at 16:25 UTC, delivering the satellite to geostationary transfer orbit in a clean, successful mission.

You'll want to note these mission highlights:

1. Payload integration at Xichang confirmed the 5,500 kg GTO-class capability of the Long March 3B/E.
2. Flight telemetry tracked each stage separation, from booster jettison through third-stage burnout, without anomalies.
3. The mission marked the rocket's 31st Long March 3B launch, reinforcing its strong post-1996 success record.

UDMH and nitrogen tetroxide propellants powered all three stages and four strap-on boosters. The Long March 3B also notably carried the Chang'e 3 lunar lander and Yutu rover to the Moon in 2013, demonstrating the rocket's versatility beyond geostationary missions.

ChinaSat 2C then maneuvered from GTO into its final operational geostationary orbit. Much like Apple's first retail stores opened simultaneously on both coasts in 2001 to establish a coast-to-coast presence, the dual-location strategy demonstrated how deliberate positioning can maximize reach and impact from a single coordinated effort. Xichang Satellite Launch Center has also served as the launch site for China's Yaogan-30 surveillance satellites, which lift off aboard Long March 2C rockets for electromagnetic environment detection missions.

Where ChinaSat 2C Fits in China's Communication Satellite Program

With ChinaSat 2C now in geostationary orbit, it's worth understanding where it sits within China's broader communication satellite architecture.

It's the second satellite in the second-generation Shentong series, following ST-2A's launch in May 2012. China Satellite Communications owns it publicly, covering its underlying military role under the PLA's Shentong-2 program.

You can see its strategic integration clearly when comparing it against first-generation ST-1 satellites—ChinaSat 2C brings advanced steerable Ku-band spot beams and mobile communication support that earlier systems lacked.

It also provides regional redundancy alongside ST-2A, ensuring continuous secure military communications if one satellite experiences disruption. Built on CAST's proven DFH-4 bus, ChinaSat 2C strengthens a growing constellation that'll eventually include ST-2D and ST-2E equivalents.

The satellite was developed by the China Academy of Space Technology and is intended to serve radio stations, TV stations, and cable networks with radio, television, and broadband transmission services. It was launched on 03.11.2015 from Xi LC-3 using a CZ-3B/G3 launch vehicle, marking another milestone in China's expanding military communications infrastructure.