 The site was activated as "Naval Radio Station Sugar Grove" on May 10, 1969, and two Wullenweber AN/FRD-10 Circulary Disposed Antenna Arrays (CDAAs) were completed on November 8, 1969.Numerous other antennas, dishes, domes, and other facilities were constructed in the following years.Some of the more significant radio telescopes on site are a dish (oldest telescope on site), a dish featuring a special waveguide receiver and a dish (largest telescope on site).