Complex sentence: Durham Life invested a large amount of money into its new purchase, building a new 1,300-foot tower near Apex, which gave the station a coverage area comparable to those of WTVD and WRAL.
Split into simpler sentences: Durham Life invested a large amount of money into its new purchase. It built a new 1,300-foot tower near Apex, giving it a coverage area comparable to those of WTVD and WRAL.