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True North Equipment is home to 16 RTK base stations, with coverage in Grand Forks, Walsh, Pembina, Nelson, Steele, and Traill counties.
How does RTK work?
It utilizes a local, ground-based reference station that transmits the high-accuracy +/- 2.5 cm (1 in.) corrections to a machine StarFire receiver via RTK Radios.
Because of the proximity of the base station to the machine, nearly all satellite drift is eliminated, and the position is highly repeatable. In order for the base-station signal to reach the machine, a direct line of sight is required.
What about trees or rolling terrain?
With many RTK solutions, automatic guidance simply stops working if trees or rolling terrain interfere with the line of sight between the base station and the machine. That is not the case when using RTK with John Deere, thanks to RTK Extend capability.
RTK Extend allows AutoTrac to keep functioning for up to 15 minutes with RTK accuracy without line-of-sight to the base station.
When using StarFire 3000 Receivers, the machine receiver automatically goes to the SF2 signal when RTK Extend expires. This allows operators to take advantage +/- 5-cm (2-in.) accuracy along tree lines or hilly terrain. The availability of SF2 provides RTK users with the best available accuracy by lessening the impact of any given field condition.
The machine will transition from RTK to RTK Extend, to SF2, and back to RTK without disengaging AutoTrac.