FIRST RF | 2,958 followers on LinkedIn. Antenna and RF Systems Technologies | FIRST RF is a product-development company specializing in advanced antennas and RF systems. Founded with a vision of demonstrating to the defense and aerospace industry what breakthroughs can be accomplished by a company that prioritizes engineering excellence, FIRST RF champions innovation, responsiveness, and quality. Our exceptional team of engineering and manufacturing experts is empowered by our world-class facilities and our significant annual investments in cutting-edge R&D.