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Preorbit and in-orbit test panel results are presented. The test panel contained three types of solar cell: GaAs/Ge, GaAs, and silicon. The test results showed anomalies in tracking the cell performance in ground tests and into orbit. There was also in-orbit degradation greater than that expected from the radiation models used for the LIPS-3 orbit. With these reservations, the GaAs/Ge cell performance...
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