This is a stereo feed covering the BNSF Front Range Subdivision operations in Broomfield and Boulder counties, the UP Moffat Tunnel Subdivisiion Operations in Jefferson county and (what I can receive of) the BNSF Brush Subdivision and the UP Greeley Subdivision operations in Adams and Weld counties. The two Uniden BC346XT receiving radios are located in north Broomfield. Metadata showing the frequency being received is available.