How much do domestic GPS systems for parallel driving cost?

Ukrainian GPS guidance systems for parallel driving can be purchased for 12,300–67,000 UAH. Basic models Nav Agro, Smilab, and ASN-Agro cost in the range of 12,300–17,300 UAH and provide accuracy up to 50 cm. If centimetre accuracy is needed, then RTK systems will cost 30,000–67,000 UAH. The price difference is explained by the type of technology and the scope of application.

Why Is There Such a Big Difference in Cost

When you come to choose a GPS system, the first question is, why pay three times more for RTK? The thing is, these are different technologies. Simple antennas receive the standard satellite signal and show your position in the field with an accuracy of plus or minus 20–50 cm. For ploughing or cultivation, this is more than sufficient.

RTK works differently. Besides satellites, it connects to a base station via the internet and receives real-time corrections. This provides 2–5 cm accuracy. It might seem, what's the difference – 50 cm or 5 cm? But try sowing onions in rows spaced 45 cm apart with a standard GPS. Half of the passes will either overlap or there will be gaps. With RTK, every row is perfectly aligned, day after day.

Budget Option – Standard GPS Antennas

The cheapest system on the market is the Nav Agro mini for 12,300 UAH. This is a compact antenna suitable for farms of 100–300 hectares. You mount it on the cab roof, connect it to a tablet via Bluetooth, and you're ready to work. It works with free software like Agrosignal or with proprietary software.

For 14,300 UAH, you can get the Nav Agro B18. The 2,000 UAH difference provides slightly better signal reception and faster position acquisition after startup. In practice, it saves about 5 minutes at the start of a shift.

If the budget allows spending 15,000–17,000 UAH, look at Smilab or ASN-Agro. The Smilab B22 costs 15,300 UAH and performs well in challenging conditions – near windbreaks, in hilly terrain. The AKB11 model for 16,300 UAH has a built-in battery, so you don't need to run wires from the cigarette lighter socket. The top model in the series, the B44 for 17,300 UAH, receives more satellite systems simultaneously – GPS, GLONASS, Galileo, BeiDou.

The ASN-Agro 5203 for 15,900 UAH is the sweet spot. It works reliably, doesn't glitch, and the housing is sturdy. I know farms where such antennas have worked for 4–5 years without a single repair.

When RTK is Needed and How Much It Costs

RTK antennas are a serious investment. If you are involved in vegetable growing, horticulture, or precision farming on large areas, you can't do without it. The SmiLab-RTK-pcb board for 30,000 UAH is an option for those who want to assemble a system themselves or integrate it into existing equipment. You need to be technically savvy and understand electronics.

Ready-to-use RTK antennas Nav-Agro RTK, Nav-Agro RTK-2, and Smilab-RTK are sold for 36,400 UAH. This is an all-in-one kit: antenna, receiver, control unit. Connect it, set up the internet for corrections, and you're off. Within 10–30 seconds of startup, the system enters RTK mode and shows 2 cm accuracy.

These antennas are universal – suitable for both agricultural guidance and geodesy. I know contractors who use one antenna both for field operations and for topographic surveys. The saving is obvious – you don't need to buy a separate, expensive geodetic receiver.

The most expensive system on the market is the Arivon AF100 guidance system for 67,000 UAH. This is premium class with extended functionality, the ability to connect an autopilot, and other features. For an ordinary farmer, it's overkill, but large agro-holdings buy them and don't complain.

To Buy a Tablet Extra or Not

All antennas are sold both separately and as part of a kit with a tablet. Tablets are offered in 7, 8, and 10-inch sizes. The price difference is not large – about 3–5 thousand for the tablet depending on the diagonal.

From experience, I can say – if you have a decent own tablet or smartphone, it's better to try it first. It might be enough. Tablets in the kits are ordinary Chinese ones, nothing special. The only plus is they are already configured and tested with the antenna.

For work in the cab, 8 inches is the optimal size. A 7-inch is too small, a 10-inch is inconvenient in a typical cab. Be sure to buy a shock-absorbing mount, because on our rough roads a regular mount will quickly become loose.

Hidden Costs of RTK

When buying an RTK system, remember the additional costs. You need internet in the field – either a modem with a SIM card or a hotspot from your phone. The system doesn't use much data, but the coverage must be stable.

Second – subscription to RTK correction services. There are free base stations with limited accuracy, and there are paid services with guaranteed 2 cm accuracy. Subscription cost ranges from 3,000 to 10,000 UAH per year depending on the provider and coverage area. Some offer monthly payment, which is convenient for seasonal work.

There is an option to install your own base station on the farm. The equipment costs from 80,000 UAH, but if the areas are large and you have a lot of machinery, it pays for itself in 2–3 years. Plus, you don't depend on third-party services and internet.

How Much GPS Guidance Really Saves

Let's break it down with specific figures. A farm of 500 hectares, 300 hectares under winter wheat. Without GPS, overlap when applying fertiliser is 5–7%, which is normal. With GPS, overlap is reduced to 0.5%. Saving on fertiliser is at least 6.5%. With a treatment cost of 3,000 UAH/ha, that's almost 60,000 UAH per season on fertiliser alone.

Fuel is another area of saving. Unnecessary passes, correcting mistakes, searching for the start of a pass – all this consumes diesel. With GPS, consumption drops by 8–12%. On the same 500 hectares, that's 50–70 thousand hryvnias saved per year.

RTK provides additional bonuses. Precise sowing means uniform germination and easier crop management. Farmers who switched to RTK for sunflower sowing report a yield increase of 3–5 quintals per hectare. On 200 hectares of sown area, that's 600–1,000 quintals of additional yield. At a price of 15,000 UAH/tonne, that's 90,000–150,000 in additional income.

How to Choose a System for Your Needs

Farm up to 200 hectares, standard operations – ploughing, cultivation, sowing cereals. The Nav Agro mini or B18 will be enough for you. For 12–14 thousand, you'll get a working system, and for the first 2–3 years, it will fully meet your needs.

Areas of 200–500 hectares, growing vegetables or industrial crops with narrow row spacing. Look at Smilab B22/AKB11 or ASN-Agro 5203. The range is 15–16 thousand, but the reception quality and stability are higher. Payback in 1–1.5 seasons.

Over 500 hectares, horticulture, viticulture, or you work as a contractor – only RTK. Nav-Agro RTK or Smilab-RTK for 36,400 UAH. Yes, it's expensive, but centimetre accuracy will pay for itself in the first season. Especially if you are doing orchard grafting or vineyard planting – without RTK, you simply can't do quality work there.

Technical Support and Maintenance

A huge advantage of domestic systems is local support. If a problem arises, you call the manufacturer, speak Ukrainian, and get a solution within a couple of hours. Spare parts arrive in 1–3 days, not weeks from abroad.

The antennas are quite reliable and rarely break. The weakest points are cables and connectors. Therefore, during installation, be sure to seal and secure everything. In field conditions, dust and moisture are the main enemies of electronics.

Once a year before the season, check the antenna mounting. Vibration loosens the nuts, the antenna starts to wobble, and accuracy drops. 15 minutes with a spanner will save you nerves and money.

Is It Worth Buying or Not

If you cultivate at least 100 hectares, GPS guidance will pay for itself within a year. This is not a fancy toy, but a working tool. Savings on fertiliser, fuel, seeds, plus reduced operator fatigue deliver a real effect.

Start with a simple system for 12–15 thousand. Work a season, understand if you need RTK. It might turn out that for your work, standard GPS is more than enough. Or maybe the opposite – you'll want maximum accuracy and then consciously go for RTK.

Ukrainian manufacturers have made GPS navigation accessible. For the price of two tonnes of wheat, you can get technology that was only available to millionaires 10 years ago. Use this opportunity.