Complex sentence: He was the anchor of Sinclair Broadcast Group's News Central broadcast which originated from Sinclair's suburban Baltimore (Hunt Valley) headquarters where he appeared to co-anchor many news broadcasts on Sinclair stations throughout the United States.
Split into simpler sentences: He was the anchor of Sinclair Broadcast Group's News Central broadcast which originated from Sinclair's suburban Baltimore (Hunt Valley) headquarters. There he co-anchor many news broadcasts on Sinclair stations throughout the United States.