What is GSAT-7C? The Rs 2,563-crore satellite IAF wants for its operations

GSAT-7C is a dedicated communication satellite for the Indian Air Force. It is designed to provide secure, resilient and seamless connectivity across military air assets. Its main purpose is to support real-time communication for the IAF’s Software Defined Radios. This matters because modern air operations require several platforms to exchange information quickly and reliably.

For example, a fighter aircraft could communicate with an airborne early warning and control platform, an unmanned aerial vehicle and a ground-control station. Satellite links can connect these users across large areas, even when terrain, distance or the Earth’s curvature limits ordinary radio. The satellite would therefore provide a space-based communication backbone for coordinated operations.

The Ministry of Defence signed a Rs 2,563-crore contract with NewSpace India Limited on October 15, 2026. The satellite is being indigenously designed, developed and manufactured. It is expected to strengthen India’s military communication capability and support increasingly connected air operations.

The GSAT-7C contract is valued at Rs 2,563 crore. This amount covers the indigenously designed, developed and manufactured satellite being acquired for Indian Air Force communications. The figure is higher than the project’s original estimated cost of Rs 2,236 crore, approved in 2021 for the satellite and associated ground hubs.

The satellite contract forms part of a larger set of Ministry of Defence contracts worth approximately Rs 4,106 crore. That wider package is not limited to space communications. It also includes Varunastra heavy-weight torpedoes intended for the Indian Navy. Together, the contracts cover capabilities for both air-force communications and naval weapon systems.

The contract for GSAT-7C was signed with NewSpace India Limited, Bengaluru, on October 15, 2026. Its larger value reflects the current acquisition agreement, while the earlier Rs 2,236-crore figure records the project’s original approval under the Make in India initiative.

GSAT-7C is intended to connect several Indian Air Force platforms through a dedicated communication network. The article specifically identifies fighter aircraft, airborne early warning and control platforms, unmanned aerial vehicles and ground-control stations. These assets perform different roles, but they need timely communication during complex air operations.

A fighter could exchange information with an AEW&C platform while also communicating with a ground-control station. An unmanned aerial vehicle could remain part of the same wider network. The satellite provides the space-based link, while the IAF’s Software Defined Radios provide the communication equipment used by military units. This supports real-time, beyond-line-of-sight communication.

The network is not described as being limited to one aircraft type or one mission. Instead, it is meant to strengthen connectivity across IAF assets. By linking airborne and ground-based platforms over large geographical areas, GSAT-7C should help the Air Force coordinate increasingly connected air operations.

The key advantage is beyond-line-of-sight communication. Ordinary radio links can be limited by terrain, distance and the curvature of the Earth. Ground-based communication can also become difficult when aircraft move far from stations or operate across wide geographical areas. GSAT-7C is intended to overcome these limits with a space-based link.

For instance, a fighter aircraft could exchange information with a ground-control station even when direct communication is blocked by distance or terrain. The same network could connect it with an AEW&C platform or an unmanned aerial vehicle. The satellite relays communications between these separated users, supporting real-time links through their Software Defined Radios.

This does not mean every communication problem disappears. The article presents GSAT-7C as a way to improve resilience when conventional links are disrupted or unavailable. Its practical contribution is a secure, seamless communication backbone for coordinated air operations beyond the reach of ordinary ground-based links.

The Air Force needs a dedicated military satellite because modern warfare depends on network-centric operations. Aircraft and ground units must share information quickly to improve situational awareness and coordinate missions. A dedicated space-based network can provide secure, resilient connectivity designed specifically for military users rather than relying entirely on shared systems.

The article highlights two practical concerns. Shared communication infrastructure may not offer the same control or resilience as a dedicated military system. Dependence on foreign satellite bandwidth can also create a strategic vulnerability. If conventional communication links are disrupted, or aircraft operate far from ground stations, a dedicated satellite can help preserve the communication backbone.

GSAT-7C’s indigenous development is therefore important for defence preparedness. The Ministry of Defence approved the project under the Make in India initiative in 2021. The new capability is expected to strengthen India’s own military communication network and support more connected air operations.

The article does not identify specific alternatives to satellite communication. In general, military aircraft and ground units can use line-of-sight radio when they are within radio range and have a suitable path between them. Ground forces can also use terrestrial relay stations, microwave links or wired fibre networks where infrastructure is available. These methods do not replace GSAT-7C in every situation.

High-frequency radio is another established option for longer-range communication, especially when direct line of sight is unavailable. Aircraft may also communicate through nearby relay aircraft or other airborne platforms. Secure digital networks can combine these links, allowing users to select an available route. The exact method depends on distance, terrain, mission needs and equipment.

These alternatives are best understood as complementary backups. They may be affected by range, terrain, infrastructure or disruption. GSAT-7C is intended to add a resilient beyond-line-of-sight layer, while a mix of radio, terrestrial and wired links can provide redundancy if satellite communications are unavailable.

Software Defined Radios, or SDRs, are radios in which important communication functions are controlled by software. Instead of relying only on fixed hardware, an SDR can be configured for different waveforms, channels or communication tasks. The article does not define SDRs, but it identifies them as the systems through which GSAT-7C will provide real-time communication links for the IAF.

For example, an aircraft and a ground-control station could use compatible SDR settings to exchange information through the satellite. The satellite supplies the beyond-line-of-sight connection, while the radios handle the users’ communication at each end. This can help different platforms participate in one connected network rather than operating as isolated units.

That capability supports network-centric warfare, where aircraft and ground units share information to improve situational awareness and coordinate missions. GSAT-7C is intended to strengthen this network by connecting fighters, AEW&C platforms, unmanned aerial vehicles and ground stations across large areas.