In the early 1960s, Mesa Road at NASA's Jet Propulsion Laboratory had not yet been built. Access to buildings on the mesa, like the High Gain Antenna Tower in this photo, was through the residential neighborhood north of JPL.
The antenna tower was built at the end of 1961, and was used by the Telecommunications Division in testing prototypes and various configurations of Deep Space Network antenna equipment. The platform was designed to reduce ground reflections from the sides and bottom of the adjacent canyon.
In October 1963, the Advanced Antenna System, also known as the 210-foot (64-meter) Mars antenna, was under construction at the Goldstone Deep Space Instrumentation Facility. The site was being cleared and a foundation dug, an access road was nearing completion, and a reservoir was built to provide water during construction. Assembly of the antenna required a 200-ton guy derrick, used to lift large pieces into place. In preparation for this stage of construction, scale models of the antenna and the guy derrick were built, showing how the derrick would be anchored to the desert floor by long cables.