Andrew Telecommunications Pvt Ltd. Offers Elliptical Waveguide Feeder. Andrew Telecommunications Pvt Ltd. Supplies solutions that serve traditional wireless networks, third generation technologies, triple-play [voice, data, and video] services, and specialized applications for microwave communications systems. The Elliptical Waveguide Feeder is recommended for most microwave antenna systems in the 3.4 to 26.5 GHz frequency range. The corrugated copper walls give elliptical waveguide excellent crush strength and good flexibility. A rugged black Polyethylene jacket provides protection during handling and installation.