medium-gain antenna

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A spacecraft antenna that provides a medium amplification of radio frequency signals, between those produced by low-gain antennae (LGA) and high-gain antennae (HGA). MGA area coverage also lies between that provided by LGA and HGA. The Magellan space probe used an MGA when its HGA failed to point towards the Earth during some manoeuvres.

Subjects: Astronomy and Astrophysics.

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