Explore the Roman Communications These systems will allow communication between the spacecraft and control centers on Earth, one million miles apart. High-Gain Antenna (HGA) Radio Frequency (RF) Communications ElectronicsUnable to render the provided sourceHigh-Gain Antenna (HGA)The dual-band HGA accommodates S-band (2 GHz) uplink/downlink data for commands and housekeeping telemetry and Ka-band (26 GHz) high-speed downlink data for science. Partner(s): Applied Aerospace Structures CorporationRadio Frequency (RF) Communications ElectronicsThe RF communications electronics are located underneath the spacecraft bus on the communications panel. The Ka-band transmitter is responsible for ingesting the high-speed science data from the science data recorder (SDR) and preparing the data for downlink to the ground station. The science downlink can accommodate data rates up to 500 megabits per second.