Training checklist used in Lunar Module Simulator 2, labeled at the top, “S-Band Antenna Angles, Descent REFSMMAT,” 2.25 x 7.5, consisting of a data table with many antenna angles listed. Bottom is labeled, “Apollo 15 Data, 9/14/71,” and reverse bears two pieces of Velcro. Moderate scattered toning to top, otherwise fine condition. The values on the card indicated the required orientation of the directional Unified S-Band High Gain antenna (relative to the onboard inertial platform) necessary to maintain signal lock during descent of the Lunar Module.
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