NASA Jet Propulsion Laboratory California Institute of Technology JPL HOME EARTH SOLAR SYSTEM STARS & GALAXIES SCIENCE & TECHNOLOGY JPL Email News RSS Mobile Video
Follow this link to skip to the main content
JPL banner - links to JPL and CalTech
left nav graphic Overview Science Technology The Mission People Spotlights Events Multimedia All Mars
Mars for Kids
Mars for Students
Mars for Educators
Mars for Press
+ Mars Home
+ Rovers Home
image link to mission page
image link to summary page
image link to rovers update
Where are they now?
month in review
image link to mission team
image link to launch vehicle
image link to spacecraft
image link to mission timeline page
image link to communications page
Summary
Antennas Size and Strength
Preventing Busy Signals
Navigation
Special Signal Tones
Communication
X-band Radio Waves
How Fast and How Much Data
Communications With Earth

Size and strength of the DSN antennas

The DSN antennas are extremely large:  34 meters (about 37 yards) and 70 meters (about 76 yards). These enormous antennas enable humans to reach out to spacecraft millions of miles away. The larger the antenna, the stronger the signal and greater the amount of information the antenna can send and receive. Each Mars Exploration Rover spacecraft carries multiple antennas used for different phases of the mission and allows it to communicate to multiple places and with other spacecraft at different speeds. The rover can choose to use four antennas: the UHF or the low-, medium-, and high-gain antennas. This capability gives the mission team several different ways to send commands and return data back to Earth.

USA.gov
PRIVACY    |     FAQ    |     SITEMAP    |     CREDITS