(Sterling) N. of Sterling, Sterling Township, Whiteside County, IL. IL40 (Locust St.) N. 1.9 miles from jct with IL2 (4th St.) in Sterling, E. on 29th St. 0.5 miles to the tower on the N. side of the road. (N41 48.998 W89 41.635) Photos 4-26-15.