Are you using GPS on a tile plow and occasionally need to work under trees so a laser system would be handy? Do you have the cabling on the plow from your old Spectra analog or digital mast and analog control box? This is a laser receiving package that will run your plow for not a lot of money. It will hook into your existing power and valve cable connectors and run an on-off valve that many commercial tile plows are currently using. Includes laser receiver, bolt-on 36" pipe mast, 40' receiver cable, coil cord, control box, jumper cables to hook to power and the valve cable. Used package. LR30, CB40, mast and cables: $2750
For a proportional valve control call me. Trimble single-slope, long-range laser with handheld, 7-12' tripod, 6' tripod and grade rod: $4785.