When satellite operator SES announced the launch of its SES-15 geostationary (GEO) communications satellite aboard a Soyuz rocket in 2017, it touted the spacecraft’s promise of delivering optimal coverage for inflight connectivity as well as live television over North America, the Caribbean and Mexico. Also mentioned was the satellite’s Wide Area Augmentation System (WAAS) hosted payload, a transponder that broadcasts GPS correction messages to aircraft equipped with ...

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