Complex sentence: It is around 1989 when the owners wanted to Market WTLZ towards Flint and would increase the Power to 4,900 Watts, 107.1's signal would reach from Midland to South of Flint.
Split into simpler sentences: It is around 1989 when the owners wanted to Market WTLZ towards Flint and would increase the Power to 4,900 Watts. WTLZ would reach from Midland to South of Flint.