Autosteer & precision ag
Autosteer sold, installed
and actually supported.
FJDynamics and PTx Trimble systems for tractors, sprayers, combines and swathers. We fit it, calibrate it, train you on it, and pick up the phone when you call.
FJDynamics AT2 family
AT2 Lite, AT2, AT2 MAX and AT2 Ultra steering-wheel autosteer that fits almost anything with a steering wheel. Roof receiver, replacement wheel, up to 12-inch display, ISOBUS section control.
FJDynamics AS2 & AH2
CAN-integrated steering through your factory valve, or hydraulic steering with an added valve for machines without one.
PTx Trimble
Displays, receivers and steering for operations already on Trimble, plus support and repair for existing gear.
Landforming & water
FJDynamics AL02 scraper control and DitchAssist for drainage and land levelling.
Rate, section & yield
FJD spray retrofit and liquid controls, CapstanAG, Greentronics RiteHeight boom height, FJDynamics AYM yield monitoring and Libra Cart scales.
RTK & corrections
Base stations, network RTK and correction subscriptions set up so the lines stay where you put them.
Which platform
FJDynamics or PTx Trimble. We sell both.
Honest answer: it depends on what's already in the cab and what the farm wants to do next. Here's how they compare.
| FJDynamics | PTx Trimble | |
|---|---|---|
| Hydraulic steering | AH2 / AH2 MAX hydraulic kit | Autopilot (integrated) |
| Electric steering | AT2 Lite / AT2 / AT2 MAX / AT2 Ultra wheel motor | EZ-Pilot Pro motor drive, EZ-Steer |
| Integrated CAN steering | AS2 / AS2 MAX | Factory-fit Autopilot |
| Free correction | WAAS 15–20 cm, PPP about 10 cm, StarNav | WAAS 15–20 cm |
| Paid satellite correction | — | RangePoint RTX 15 cm, CenterPoint RTX 2.5 cm |
| RTK | 2.5 cm via Ntrip or V1 base station | 2.5 cm via base or VRS |
| Terrain compensation | Integrated IMU + terrain comp | T3 terrain compensation |
| Interface | Simple, app-based Android display | Precision-IQ, deep customization |
| Best fit | Value, mixed older fleets, DIY-friendly installs | Operations already on Trimble, factory-steer-ready machines |
Repairs for every brand
We fix what we sell. And what they sold you.
Displays, receivers, rate controllers and harnesses from any manufacturer go through the ChDp repair centre and come back with a two-year parts-and-labour warranty.
- Most repairs back within about a week; the network aims for 80% inside 10 days
- Common parts stocked for fast turnaround
- Legacy hardware kept alive instead of forced upgrades
- Loaner options in season when available

An install, start to finish
What happens when you buy a system from us.
Fit check
We confirm the machine, steering type, spline or bracket, and what you want it to do.
Install & calibrate
Receiver, motor or valve, display and harness fitted. Calibrated on your field, not in a parking lot.
Training
Lines, boundaries, headland turns and section control walked through in your cab before we leave.
Support
Phone and text support in season, firmware updates, and a dealer network behind us when something's new.
In the cab
Recent installs.





Price a system