As you drive over the hill from Marshall toward Santa Rosa, the smooth rhythms of KDAN gradually give way to the tones of K-Faith, a Christian rock station.
But KDAN, a tiny radio station broadcasting 24 hours of music on 91.5 FM from a sheep ranch overlooking Tomales Bay, is now up for sale. Its owner, Jeff Cotton, is determined to keep the station in local hands, resisting the encroachment of Christian radio that…