I listen to the State plow trucks on 47.140 with great success. I hear trucks plowing and sanding in Piscataquis and Penobscot county via the Garland repeater. Are the plow trucks that do the I-95 from Newport up through Bangor and beyond on a different frequency? Also, what frequency can I hear the other plows in the other counties near me? (Somerset, Waldo, Hancock to name a few) Thanks, Richard