Sep 4 2007
From The Space Library
NASA’s JPL announced that the Phoenix Mars Lander flight-operations team had successfully tested the craft’s descent-monitoring radar and UHF radio on 24 August. During its flight to Mars, Phoenix had communicated with Earth via an X-band radio unit, but the craft would switch to UHF radio after landing on Mars. Because the X-band radio unit was mounted on a part of the craft that would jettison shortly before Phoenix reached the Martian atmosphere, the UHF radio would become critical to communications once the craft reached Mars.
NASA JPL, “Phoenix Mars Lander Status Report: Radar and Other Gear Pass Checkouts,” news release 2007- 094a, 4 September 2007, http://www.jpl.nasa.gov/news/news.cfm?release=2007-094a (accessed 9 August 2010); Dave Mosher, “Phoenix Spacecraft Passes In-Flight Tests,” Space.com, 5 September 2007, http://www.space.com/missionlaunches/070905_phoenix_update.html (added 9 August 2010).
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