How RTK correction works and why repeatable sub-inch accuracy matters for planting, strip-till and controlled traffic. TRULAND runs an RTK network with a published dealer map.
RTK stands for real time kinematic. A base station at a precisely known, fixed location receives the same satellite signals your machine does, calculates the difference between the satellite-derived position and its true position, and broadcasts that difference as a correction. Your receiver applies it in real time. Because RTK works on the carrier phase of the signal rather than just the code, it delivers accuracy in fractions of an inch instead of inches or feet.
A satellite receiver on its own is not precise enough to guide a planter. The signal has traveled a long way through an atmosphere that bends it by a variable amount, and the resulting position drifts. Left uncorrected it is good enough to know which field you are in and not good enough to know which row you are on.
Correction fixes that by comparing. A base station sits at a location that is precisely known and does not move. It receives the same satellite signals your machine does, calculates the difference between where the satellites say it is and where it actually is, and broadcasts that difference as a correction. Your receiver applies the correction and lands on a far more accurate position.
RTK, real time kinematic, is the most accurate form of this in common farm use. It works on the carrier phase of the signal rather than just the code, and it delivers accuracy measured in fractions of an inch rather than inches or feet. The correction is delivered continuously in real time, which is why the machine can act on it while moving.
Accuracy and repeatability are different things and repeatability is what changes how you farm.
Accuracy means the machine knows where it is right now. Repeatability means it will find the exact same line again tomorrow, next month and next April. Lower correction levels drift over time. You can run a straight pass today, come back in three hours, and the line has shifted. Come back next season and it has shifted more. For tillage or spreading, that does not matter. For anything where this year's pass has to relate to last year's pass, it matters completely.
RTK gives you a line you can save and return to. That is what makes fixed traffic patterns, strip-till and precise interrow work possible, and it is why growers running those systems treat RTK as required rather than optional.
In planting, the accuracy shows up as consistent row spacing and clean edges. Passes that are consistently spaced mean every row has the same amount of ground to work with, instead of some rows crowded and others in a wide gap. That evenness is a yield conversation, especially in narrow rows and at higher populations.
It also shows up in overlap. Guidance that drifts gets compensated for by an operator who steers a little wide to be safe, and a little wide on every pass across a whole farm is a lot of double-planted seed and a lot of skipped ground where the compensation went the other way.
Repeatability lets you set up planting passes that relate correctly to what came before, whether that is the previous crop's rows, an established traffic pattern, or a tillage pass made months earlier.
And it makes section control work at its best. Section control shutting off against an accurate boundary with an accurate machine position is where the seed savings on point rows and irregular fields actually come from.
Strip-till is the clearest case for RTK. The whole system depends on placing seed into a strip that was built in a separate pass, often in a different season, with fertility banded in it.
If the planter misses the strip, you get the cost of strip-till and none of the benefit. The seed lands in untilled ground with the wrong temperature and residue conditions, away from the band you paid to place, and the field looks uneven in a way that is obvious from the road by June.
Hitting a strip that was built in the fall from a planter pass in the spring requires accuracy that repeats across months and across machines. That is RTK's job. It is also why growers doing strip-till care about which machines are on the correction and whether the guidance lines are shared correctly, because the fall machine and the spring machine have to agree on the same line.
Controlled traffic means confining wheel traffic to the same lanes every year so the rest of the field never gets driven on. Compaction concentrates in a small permanent share of the field, and the growing area stays uncompacted.
It only works if the lanes are truly the same lanes. Drift of a foot per year defeats it within a couple of seasons, because you end up compacting a wider and wider band instead of a fixed one. RTK is what keeps the lanes fixed.
The payoff is better root development and water infiltration across most of the field, and firmer, more predictable travel lanes for heavy equipment in wet conditions. It takes planning to line up equipment widths and it is not for everyone, but the accuracy requirement is not negotiable.
Anywhere a pass has to relate to another pass. Interrow cultivation and sidedress applications, where being off means cutting or knifing into the crop rather than between it. Tile and drainage work, where elevation and position accuracy determine grade. Land forming and grading. Ditching and waterway shaping. Fertility banding you intend to plant to later. Any operation with narrow rows where a small error is a large percentage of the row spacing.
It also pays on long days and poor visibility. Dust, darkness, fog and fatigue all degrade an operator's ability to hold a line, and consistent guidance keeps quality steady late in the day when it otherwise falls off.
TRULAND operates an RTK network and publishes a dealer map showing it. Before you make a decision on RTK, look at the map against where your ground actually is, and talk to us about your specific fields. Coverage questions are local, and the right answer depends on your farm rather than on a general statement.
If you are considering RTK, the conversation is worth having before you buy a receiver, not after. What you run, where your acres sit, which machines need to share lines and what operations you are trying to support all bear on the recommendation.
Call the Precision Ag Support Center at (260) 296-2391 or contact your nearest TRULAND store.
RTK is one layer. It does not fix a bad boundary, a wrong implement width in the display, guidance lines drawn for a different setup, or a machine profile that does not match the machine. A sub-inch position applied to incorrect setup information gives you a very precise version of the wrong answer.
That is why RTK, boundary mapping and Operations Center work tend to get discussed together. If you are investing in accuracy, it is worth making sure the rest of the setup deserves it.
External sources are provided for reference. For anything specific to your machine or your operation, call the store nearest you.
RTK stands for real time kinematic. A base station at a precisely known, fixed location receives the same satellite signals your machine does, calculates the difference between the satellite-derived position and its true position, and broadcasts that difference as a correction. Your receiver applies it in real time. Because RTK works on the carrier phase of the signal rather than just the code, it delivers accuracy in fractions of an inch instead of inches or feet.
Accuracy is knowing where you are right now. Repeatability is finding the same line again months or seasons later. Lower correction levels drift, so a pass run today may not line up with the same pass run next spring. That is fine for tillage or spreading and unacceptable for strip-till, controlled traffic or interrow work, where this year's pass has to relate to a pass made in a different season, often by a different machine.
Practically speaking, yes. Strip-till depends on placing seed into a strip built in a separate pass, often in the fall, with fertility banded in it. If the planter misses the strip you pay for the system and get none of the benefit, because seed lands in untilled ground away from the band. Hitting a fall-built strip with a spring planter requires accuracy that repeats across months and across two different machines, which is exactly what RTK provides.
Yes, though it works alongside accurate boundaries rather than replacing them. Section control decides when to shut off based on machine position and the field boundary, so a precise position against an accurate boundary is where the seed and chemical savings on point rows and irregular fields come from. RTK also reduces the operator habit of steering a little wide to be safe, which quietly doubles up seed across an entire farm.
TRULAND operates an RTK network and publishes a dealer map showing it. Coverage questions are local, so the useful step is to look at the map against where your ground actually sits and then call us about your specific fields. Do that before buying a receiver rather than after. Reach the Precision Ag Support Center at (260) 296-2391 or contact your nearest TRULAND store.
Not on its own. RTK gives the machine a very accurate position, but the machine still acts on the setup information it has been given. If the field boundary is inaccurate, the implement width in the display is wrong, the guidance lines were drawn for a different configuration, or the machine profile does not match the machine, RTK simply produces a precise version of the wrong result. Boundary mapping and Operations Center setup usually need to be addressed alongside it.
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