Complex sentence: Donaldson was a weekend anchor for WTOP-TV (currently WUSA-TV) Channel 9 in Washington DC. This was in 1966 when he anchored the 6PM and 11PM Saturday and Sunday evening newscasts with John Douglas doing the weather forecasts.
Split into simpler sentences: Donaldson was a weekend anchor for WTOP-TV (currently WUSA-TV) in Washington, D.C., in 1966. He anchored the 6PM and 11PM Saturday and Sunday evening newscasts with John Douglas doing the weather forecasts.