Antelsat is an Uruguayan CubeSat using the 2U form factor. The satellite has been designed and built at Facultad de Ingeniería de la Universidad de la República (FING) to allow students to develop skills in radio and aerospace engineering. The spacecraft is equipped with cameras for the acquisition of Earth imagery that can be downlinked to Earth. Cameras installed on the satellite include a visible spectrum camera and a near infrared imager.
The satellite uses a VHF/UHF amateur radio terminal for telemetry downlink and command uplink while payload data uses an S-Band downlink system. All satellites subsystems have been designed from scratch and ANTELSAT will perform detailed testing of the various systems including the attitude control system that consists of a magnetometer unit and photodetectors for attitude sensing and magnetic torquers for coarse attitude control.