The early communications system inside the Unity module continues to operate normally. Every week or two, commands are issued to switch between the right and left low gain antennas to ensure their health.
Other weekly checks included measuring and refining the spin rate of the complex, which is oriented with Unity pointed at the Earth. The slow spin maintains even temperatures on all systems and minimizes propellant usage.
All other Station systems are in excellent shape as it orbits at an altitude of 242 by 225 statute miles. Since the launch of Zarya last November, the ISS has completed more than 5,594 orbits. S