Complex sentence: The first dish, Antenna One (dubbed "Arthur"), was built on the site in 1962 to link with Telstar, it was the first open parabolic design and is 29.5 metres in diameter and weighs 1,100 tonnes.
Split into simpler sentences: The first dish, Antenna One (dubbed "Arthur"), was built on the site in 1962 to link with Telstar. It was the first open parabolic design and is 29.5 metres in diameter and weighs 1,100 tonnes.