Product Sheet PacStar Modular Radio Center Product Sheet share PacStar Modular Radio Center (MRC) is a COTS-based, modular, tactical and expeditionary, rugged radio, voice and IP integrated solution. Download the product sheet to learn more. Download Resource Login to download this resource Username Enter your Curtiss-Wright Defense Solutions username. Password Enter the password that accompanies your username. Don’t have an account?Register here.