A new dish at Goldstone buys NASA about nine percent more mid-size aperture

The count that decides who gets a pass is 12. With DSS-23 tracking, the network operates 12 of the 13 34-meter antennas it intends to have ^[1], which works out to better than three of its 40-plus supported spacecraft for every one of those dishes ^[2]. Measured against the fleet that existed in July, the new antenna is an increase of about nine percent ^[3]. Teams that have been bidding against each other for downlink get one more slot in the auction.

The whole increment landed at one longitude. Goldstone now fields four 34-meter dishes next to its single 70-meter ^[4][9], which is a third of the network's 34-meter aperture count sitting in one part of California ^[5]. That helps a spacecraft whose geometry favors the western United States, and does nothing for a pass that has to happen while Goldstone is pointed away.

The design choice underneath these antennas is about serviceability. A beam-waveguide dish sends the signal down into a stable, climate-controlled underground room instead of carrying heavy receivers on the moving structure, which keeps the electronics reachable and lets one antenna work across several radio bands ^[10]. It also makes commissioning the hard part. Germaine Aziz, who manages the Aperture Enhancement Project at JPL, said the challenge was not building the antenna but turning mechanical, electrical, software, radio frequency and infrastructure systems into a single mission-ready asset ^[13]. The calendar agrees with her. Construction began in February 2020 ^[7], the 133-ton reflector framework was bolted onto the pedestal in December 2024 ^[8], and the first operational track came on Aug 3: roughly five and a half years end to end ^[7], of which about eight months went to panel installation, calibration and the test campaign after the framework went up [d7b].

Part of what DSS-23 adds is already committed. The plan NASA describes is for each complex to array its 34-meter dishes to provide a communications equivalent of that site's single 70-meter antenna, three in the network altogether ^[8], each of which has run for more than 50 years and is getting more costly to maintain and repair ^[12]. JPL's director, Dave Gallagher, puts the network's continuous operations at over 60 years ^[14]. An arrayed stand-in occupies several dishes at once, so backup for the oldest apertures and passes for the 40-plus missions come out of the same 12 antennas until DSS-33 reaches Canberra in 2029 ^[11][1].