The Communication Support Measures for AEW&C systemhas been successfully developed. The system has the capability for Surveillance of communication signals in V/UHF bands, Interception, Analysis of Voice and Data Signals, Direction Finding and Location Fixing of Communication threats, identification of threats through correlation of Signal Database and Reporting in Real-time. It can also Intercept and Record wideband Signals in Microwave band.Installation and performance evaluation of Indigenous ESM & RWR Systems on AEW&C platform is completed. The system is under user evaluation for acceptance.