GSAT-31 — Satellize
Mission · Comms · Ku-band SATCOM

GSAT-31 India's 40th communications satellite.

A high-throughput Ku-band geostationary spacecraft replacing INSAT-4CR — VSAT, DTH and broadcasting backbone for the Indian subcontinent.

When6 February 2019VehicleArianespace Ariane 5 — VA247 · Kourou
Sovereign ground station and satellite dish
2,536 kg
Launch mass
Ku-band
Primary payload
48° E
Geostationary slot
15 yr
Design life on station
The mission

What we flew.

GSAT-31 is India's 40th communications satellite — a 2,536 kg Ku-band bird that took the slot of the ageing INSAT-4CR at 48° E geostationary, providing continuity for VSAT networks, DTH operators, ATM connectivity and broadcasting across the subcontinent.

It launched on 6 February 2019 from Kourou aboard Ariane 5 VA247, alongside Saudi Arabia's HellaSat-4. The spacecraft drifted into its operational slot over the following weeks, with a design life of around 15 years.

Satellize's role was integration support — working alongside ISRO and the platform integrator on RF subsystems and ground-segment readiness. It is the kind of work that does not make headlines, and it is most of what keeps a national satcom network alive.