Beam Waveguide Deep Space Station Antenna

The 112-foot (34-meter) antennas come in two types: a high-efficiency antenna and beam waveguide antenna. What makes the beam waveguide version special is the addition of five precision radio frequency mirrors that reflect radio signals along a tube from the antenna to a below-ground room. This design allows sensitive electronics to be in a climate-controlled equipment room instead of outdoors, at the center of the antenna dish