16 06 2026
0
Field Navigator: What It Is and Why Every Farmer Needs One
0
Table of contents
- We used to eyeball it - and thought that was fine
- How it works - no fluff
- Which accuracy level for which job
- What actually gets saved and by how much
- When does it pay for itself
- Basic or RTK: which one to get
- Basic agri-navigator - from 12,300 UAH
- RTK system - from 36,400 UAH
- Autopilot
- Does it make sense for a small operation?
A field navigator, or agricultural navigator, is a device that uses GPS to show the tractor operator where they are driving and where they should be driving. The screen displays a course line and how far you've drifted from it. This lets you work a field in straight, even passes with no skips and no overlaps - day or night, even in fog or dust.
We used to eyeball it - and thought that was fine
Anyone who's spent real time in a cab knows: trying to drive straight without a reference point is an illusion. You aim at a tree on the far end of the field, then it disappears behind a rise. You put a guy out there with a flag - he wanders, drifts. Across 100 acres of that kind of driving, you end up with 5 to 15 percent of the field either double-covered or completely missed.
These aren't vague estimates. On 100 hectares with 10% overlap, you've burned fuel, sprayed chemicals and run hours on the engine over 10 extra hectares that didn't need it. At today's diesel and herbicide prices, that's real money gone for nothing.
"After my first season with a navigator, I sat down and figured out what I'd been wasting on extra passes all those years. Felt pretty stupid - should have bought one five years earlier."
How it works - no fluff
You drive your first pass and set the A-B line. Or you drive around the field boundary and the device builds the whole pass grid for your implement width automatically. After that, the screen shows you an arrow or a guidance bar - which way to steer. Drift left and the arrow points right. That's really all there is to it.
The signal comes from satellites: GPS, GLONASS, Galileo or BeiDou. A regular smartphone positions you to within 1-2 metres - useless for field work. A basic agri-navigator with an external antenna gets you to 20-50 centimetres. That's good enough for most jobs. An RTK system with a base station gets down to 2.5 centimetres. That's a completely different conversation.
Which accuracy level for which job
| Navigation type | Accuracy | Best suited for | Approx. cost (UAH) |
|---|---|---|---|
| Smartphone without antenna | 1-2 metres | Not suitable for field work | Free |
| Basic agri-navigator | 20-50 cm | Spraying, fertiliser application, tillage | from 12,300 UAH |
| RTK system | up to 2.5 cm | Planting, row cultivation, autopilot | from 36,400 UAH |
For spraying and spreading fertiliser, basic accuracy is plenty. But if you're planting corn or sunflowers, you need RTK. A 15-20 cm error per pass adds up across twenty runs until your rows are wandering all over the place. Inter-row cultivation becomes a guessing game.
What actually gets saved and by how much
According to FieldBee research, optimising the route along parallel passes reduces diesel consumption by 10-15%. With RTK correction, seed usage drops by up to 4% on fields with irregular shapes, because the system shuts off seeder sections on headlands and anywhere already planted.
Resource savings when switching to agri-navigation
Sources: FieldBee, Kurkul.com, Kyivstar Business
There's another benefit people don't talk about enough: fatigue. Without a navigator on a long run, you're constantly scanning for reference points, craning your neck, second-guessing yourself. With a navigator, you just follow the arrow. Over a full shift, the difference is real.
When does it pay for itself
300-500
hectares is enough to fully recoup a basic navigator's cost
1 season
average payback period for a farm under 500 ha
3,700 ha
average area per operator in Ukraine (AgroHub HR360, 2025)
According to AgroHub HR360 data for 2025, the average tractor operator in Ukraine is responsible for 3,700 hectares. Skilled operators are hard to find and the situation isn't improving. When one person is carrying that kind of workload, every pass has to count - because there's no room to go back and redo it, and no spare person to send out there.
Basic or RTK: which one to get
Basic agri-navigator - from 12,300 UAH
If the operation is under 500 hectares and the main jobs are spraying and fertiliser application, a basic model covers everything you need. It fits on any machine in about an hour, the signal is free, nothing complicated. Pays for itself in one season, no question.
RTK system - from 36,400 UAH
You need this when planting row crops or running an autopilot. Accuracy to 2.5 cm and year-to-year repeatability of coordinates - that's the foundation of variable-rate application and precision farming. The base station sends a correction signal via GPRS in real time, and the tractor holds exactly the same line every single pass. Invaluable when applying fertiliser to prescription maps.
Autopilot
This is where the system actually steers for you and you just monitor. The operator isn't on the wheel, isn't grinding through hours of monotonous straight runs. On large acreages this cuts fatigue significantly and lets you keep your head clear for decisions that actually need thinking.
Does it make sense for a small operation?
Even at 50-100 hectares a navigator earns its keep if you're spraying regularly. Herbicide prices are high, and 10% overlap is real money. Basic models from 12,300 UAH at normal workload come back in one season.
Want to test the water with minimal outlay - there's an option: free Android app plus an external GNSS antenna. You'll get 20-40 cm accuracy, and that's already far better than eyeballing it. A solid way to get comfortable with the technology before committing to more.
Comments
No reviews yet
