The Indian Air Force has signed a contract worth approximately ₹275 crore with Hyderabad-based Astra Rafael Comsys (ARC) for the supply and integration of advanced Software Defined Radios (SDRs). The deal, finalized in early January 2026, represents a significant step toward modernizing the IAF’s airborne communication infrastructure. The contract includes two key components: retrofitting SDR systems on the existing MiG-29 fighter aircraft fleet and supplying 24 SDR units for the indigenous Light Combat Aircraft (LCA) Tejas Mk-1A. This upgrade aligns with the Air Force’s broader strategy to enhance network-centric warfare capabilities and secure military communications across all platforms.
Software Defined Radios differ fundamentally from conventional hardware-based communication systems by using software to perform critical functions such as modulation, demodulation, and signal processing. This technology enables aircraft to dynamically switch frequencies, waveforms, and protocols in contested environments. Defence officials stated that the SDRs will enable seamless interoperability between air, land, and naval forces, support real-time transmission of voice, data, and video, and enhance secure encrypted communications in high-threat airspace. The systems can be upgraded through software updates without requiring hardware replacement, making them essential for modern C4I frameworks and net-centric warfare operations.
Astra Rafael Comsys is a joint venture between India’s Astra Microwave Products Limited and Israel’s Rafael Advanced Defence Systems. The company operates India’s first private-sector facility dedicated to producing military-grade SDRs in Hyderabad. The programme benefits from technology transfer from Rafael, enabling high levels of indigenization and reducing dependence on foreign avionics suppliers. Officials noted that indigenous content in Tejas Mk-1A communication systems is expected to exceed 60 percent, supporting the Atmanirbhar Bharat and Make in India initiatives. The deal strengthens Hyderabad’s defence manufacturing ecosystem, generating skilled employment in engineering, research and development, and advanced electronics sectors.
The induction of these communication systems will enhance the IAF’s operational capabilities against technologically advanced adversaries. For the MiG-29 fleet, the upgrade extends operational relevance, while for Tejas Mk-1A, it ensures a future-ready communications backbone from the outset. Defence analysts believe this contract could lead to wider SDR adoption across the IAF, potentially extending to platforms such as the Su-30MKI, Rafale, and the future Advanced Medium Combat Aircraft (AMCA). The ₹275 crore order marks another step toward building a resilient, standardized communication grid across the Indian Air Force while supporting a wider MSME supply chain in the defence sector.
