Follow this link to skip to the main content
NASA logo, Jet Propulsion Laboratory, Caltech button    
JPL Home button Earth button Stars & Galaxies button Technology button
Genesis Search for Origins banner
Home button
Mission button
Spacecraft button
Sample Return Capsule button
Flight Software
Command and Data
Electronic Power button
Guidance, Navigation, and Control button
Propulsion button
Thermal Control button
Instruments button
Partners button
Science button
News button
Education button
Archived Homepage
Spacecraft  Subsystems Banner



Genesis' telecommunications subsystem is composed of both a radio system operating in the S-band microwave frequency range and a system that operates in the ultra high frequency (UHF) range. The S-band system provides communication capability between Earth and the spacecraft throughout all phases of the mission. The UHF system is located in the sample return capsule; after parafoil deployment, it provides a backup tracking capability.

The spacecraft's radio system communicates with Earth though a medium-gain antenna. The medium-gain antenna is spiral-shaped, about 10 centimeters (4 inches) in diameter, about 12 centimeters (4.87 inches) tall and weighs 105 grams (about 4 ounces). The spacecraft also houses four low-gain antennas, located on the underside of the craft. These are patch antennas, which sit on a coaster-size square (10 by 10 by 1 centimeters (4 by 4 by 0.4 inches)). These have a much wider field of view.

The low-gain antennas will be used to make initial contact with the spacecraft after it leaves Earth's atmosphere, and afterwards only for emergencies. The medium-gain antenna will be used for most of the spacecraft's communication with Earth.

The telecommunication subsystem weighs 10.1 kilograms (22.3 pounds). button
+ Freedom of Information Act

+ Privacy/Copyright

Curator: Aimee Meyer
Updated: November 2009

go to go to go to