Complex sentence: In 1987 WRDV began the "Delaware Valley Radio Network" by simulcasting on a translater in Sellersville/Quakertown at 88.7 and, in 1988, adding a translator at 91.9 FM in Lawrenceville/Trenton.
Split into simpler sentences: In 1987 WRDV began the "Delaware Valley Radio Network" by simulcasting on a translater in Sellersville/Quakertown at 88.7. In 1988 it added a translator at 91.9 FM in Lawrenceville/Trenton.