Sports broadcaster Darrell Eastlake has died, aged 75.

Nine News reports he died on Thursday morning in a nursing home on the NSW Central Coast after suffering from Alzheimer's disease.

The former Wide World of Sports commentator worked in television and radio for more than 40 years and worked for the Nine Network from 1982 until his retirement in 2005.

The larger-than-life man was renowned for his booming voice, and is most famous for his State of Origin calls and his commentary of the weightlifting at the 1982 Commonwealth Games.