SpaceX is slated to launch another pair of satellites before the end of June.
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Khanfour, who will be based at the head office in Dubai, previously worked as VP of Sales and Business Development at SES.
Robinson has joined Comtech from Ursa Space Systems where she served as president.
The O3b mPOWER satellites are part of SES's second-generation medium earth orbit system operating at approximately 8,000 km away from the Earth's surface.
The majority of renewals span several years and will enable millions of satellite TV households across Germany.
Hannaford was most recently chief of staff for SES Satellites in Luxembourg.
The 29th edition of CABSAT is set to shed light on emerging trends in the satellite communications market.