After 3 failed attempts with a F2@19 megahertz and F5@12 and 19 megahertz we kept losing signal @31'. Today we used the Mag 8 as we approached the tracks @35' the SCC came on the job and said we couldn’t be on railroad right of way. So switched to drill to mode set up on other side of track and was getting signal 35' deep and 95' feet away. pilot hole complete by noon.