Your OWN RTK base. Want Independence from paying annual CORS subscriptions; then the easy and practical solution is the NX510 SE + iBase GNSS Kit. Set up the iBase on a tripod, press 1 button to turn on then press 2nd button to link to your tractor – Done! No cables, connectors, external batteries – precision guidance and auto-steer your tractor (2.5cm) over UHF. 12 hrs internal battery and up to 8km range.