Complex sentence: Post-Newsweek also moved the channel to basic cable and expanded it to 24 hours a day; under Monaghan's ownership it had been a premium channel that only aired in the evening and on weekends.
Split into simpler sentences: Post-Newsweek also moved the channel to basic cable and expanded it to 24 hours a day. Under Monaghan it was a premium channel that only aired in the evening and on weekends.