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● PRECISION NAVIGATION · BDS + RTK AUTO-STEERING FOR TRACTORS

Straight lines, every pass, every hour, every operator.

Most yield loss does not come from bad seed or bad weather. It comes from overlap, skips and crooked passes that nobody can see from the cab. Jitian Intelligent (JTILEP) builds the HD818 guidance kit that puts tractors on a ±2.5 cm line — a Chinese manufacturer of agriculture equipment since 2008, exporting to 30+ countries.

⊂ SUB-TOPIC · Part of Smart Machinery, the execution layer of Smart Agriculture

±2.5cm

RTK GUIDANCE ACCURACY

SATELLITE CONSTELLATIONS

800

NITS SUNLIGHT DISPLAY

2008

MANUFACTURING SINCE

Ask for the HD818 Datasheet → Full HD818 Specifications

Tractor guided by the HD818 auto-steering system working a row-crop field

HD818 · retrofit kit for tractors you already own B2B · OEM / ODM

CHAPTER 01

Why Guidance Pays Back Before Anything Else Does

A guidance kit is the cheapest upgrade on a farm, because it does not ask you to change your crop, your agronomy or your machines. It changes one thing: where the tractor actually is.

①

Overlap Costs Money Silently

Every crooked pass re-covers ground you already paid to treat. On tillage and planting the overlap typically runs 5–15%. Nobody invoices you for it, so nobody notices it.

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②

Skips Cost More

A missed strip in a spray or fertiliser pass is a strip of unprotected crop. It reappears at harvest, as a yield difference you cannot fix after the fact.

→

③

Guidance Removes Both

The HD818 puts the machine on a stored line and keeps it there — ±2.5 cm with RTK. Overlap falls, skips disappear, and the work no longer depends on which operator is in the seat.

±2.5cm

RTK guidance accuracy

HD818 specification

5–15%

Overlap on tillage & planting

Field measurement, row crops

1 season

Typical payback window

Row-crop farms, single tractor

Constellations tracked

BDS + GPS + GLONASS + Galileo

The Jitian Intelligent field team running HD818 tractor guidance and drone operations on the same block of land

Guidance is verified in the field, not just on the datasheetJitian field trial · the same prescription map executed on the ground

CHAPTER 02

What Actually Arrives in the Box

Three hardware groups. The kit is a retrofit — it goes onto the tractor you already run, and it comes off the same way if you change machines.

In-cab terminal

Electric steering

GNSS receiver

The kit is brand-agnostic — it fits the vast majority of tractors, with flange matching confirmed before you order. RTK precision requires either a base station or a CORS account; that is not optional, and we will tell you which one suits your region.

CHAPTER 03

The Five Jobs It Changes Most

Guidance is not a harvesting-season purchase. It is bought for the operations that run all year, where a straight line compounds into input savings.

🌾

Tillage & Land Prep

The highest-overlap job on any farm. Straight, evenly spaced passes cut fuel burn and machine hours, and leave a level seedbed for the next pass.

🌱

Planting & Seeding

Row spacing sets the ceiling for the whole season. A repeatable line means uniform emergence and machinery that can follow the same rows later.

💧

Spraying & Fertilising

Section control on a guided line stops the double-application at headlands and the skips in between — the two places where inputs are quietly wasted.

🚜

Ridging, Bedding & Harvest

Machine-dug beds and rows come out parallel. Harvest equipment can then travel the same wheel tracks, which reduces compaction on the bed itself.

Overseas distributor examining the HD818 auto-steering kit at an agricultural trade fair

Distributor evaluationUnits are demonstrated, not just catalogued

Production and assembly building of the Jitian Intelligent plant in Xuzhou, Jiangsu

Built in-houseSame plant, same supply chain, since 2008

CHAPTER 04

The Precision Stack — and What It Is Not

Guidance sits on top of four technologies. Buyers who ask the right questions here avoid the most common disappointment in this category: expecting one module to do the job of another.

LAYER 01

Satellite positioning

Four constellations tracked together, so a single system outage does not stop the job.

BDS · GPS · GLONASS · Galileo
BeiDou (BDS) first — full constellation advantage in Asia
Reinforced on degraded-signal terrain

LAYER 02

RTK correction

Centimetre accuracy needs a correction source. This is the layer buyers most often under-budget — and the one with the most options.

±2.5 cm pass-to-pass
Six correction sources accepted — radio base, NTRIP, SBAS, B2b-PPP, Galileo HAS, L-Band
Repeatable lines across seasons

LAYER 03

Machine control

The part that turns a coordinate into a steering angle, on your tractor, with your hydraulic setup.

Electric steering motor
Multi-brand adapter kits
Manual take-over at any time

LAYER 04

Field data & ISOBUS

Guidance data and implement control, kept as two separate questions on purpose.

Coverage maps & operation logs
ISOBUS compatible implement control
Prescription map import (ShapeFile / ISOXML)

One scope note, stated plainly: the 360° surround-view function is an independent add-on module on the HD818. It is a separate option, and it is not part of the ISOBUS function set. If you are specifying a tender or comparing quotations, treat it as its own line item — we would rather say this up front than have you discover it after the order.

Guidance is the ground half of the system. The aerial half is the JT-80 spray / spread drone, and both run against the same prescription map.

CHAPTER 05

Getting a Correction Signal — Six Options, One Decision

±2.5 cm is an RTK figure, and RTK needs a correction source. It is the line item buyers most often discover after the order. These are the six the HD818 accepts, and what each one asks of your farm.

Correction source	What it asks of your farm	Where it earns its keep
Local radio base station	One base unit you own, plus a radio link to the tractor	Land you farm year after year — your own base, no subscription, no mobile coverage needed
NTRIP over mobile network	A CORS / NTRIP account and a data SIM in the cab	Fields scattered across a district — nothing to install at the field edge
SBAS	Nothing — the correction is broadcast from satellites	A fallback on days when the RTK link drops, and a low-cost way to start guided work
BeiDou B2b-PPP	Nothing at the field edge — the correction arrives over the BeiDou signal	Regions with no mobile data and no base station — a common situation in our export markets
Galileo HAS	Nothing at the field edge	The same idea, where Galileo is the stronger of the two services in your region
L-Band	A subscription service, plus the L-Band receiver option	Wide-area work where one service has to cover several countries

One number deserves care. ±2.5 cm pass-to-pass is an RTK figure. The satellite-delivered services above (B2b-PPP, Galileo HAS, L-Band) remove the base station and the internet dependency, and their accuracy is set by the service rather than by our hardware — and their coverage footprint is regional, not global. Ask us for the current figure and footprint for your country. Do not compare a satellite-service number against an RTK number; they are not the same measurement.

CHAPTER 06

What ISOBUS Actually Buys You

“ISOBUS compatible” is not one feature. It is a stack of levels, and a quotation that stops at the first one is usually the cheapest line in the document. The HD818 terminal implements two: UT and TC-SC.

Universal Terminal

The terminal becomes the implement’s own screen. A seeder, sprayer or spreader of any brand plugs in and its controls appear on the same display.

Cross-brand plug-and-play
No second monitor in the cab
Guidance and implement on one screen

TC-SC

Section Control

The terminal switches implement sections by position. Overlap stops being something the operator avoids and becomes something the machine refuses to do.

Position-based on / off switching
No respraying already-treated ground
The level that pays for itself on a sprayer

Two scope notes we would rather state up front. First: the 360° surround-view function is an independent add-on module on the HD818 — it is not part of the ISOBUS function set, so budget it as its own line. Second: on a machine that already has factory auto-steer preparation, the HD818 is Steer-Ready — it connects without hydraulic retrofits and without adding a steering motor. A tractor with that preparation and one without it are two different orders; send us your model and we will tell you which one you have.

CHAPTER 07

HD818 at a Glance

The figures buyers ask for first. Anything not listed here is a question for our sales team — we do not publish a number we cannot substantiate.

Item	Specification	Why it matters to you
Guidance accuracy	±2.5 cm with RTK	Pass-to-pass repeatability at seeding and spraying width
Constellations	BDS + GPS + GLONASS + Galileo	Four sources instead of one — fewer interruptions on tree lines and slopes
Display	800 nits, sunlight-readable	Usable in open-cab daylight, not only under shade
Implement control	ISOBUS compatible	Section control and implement data on the same terminal
Steering	Electric steering motor, manual take-over	The operator stays in charge; guidance assists, it does not replace judgement
Differential source	Base station or CORS account Required for RTK — not included as standard	The single decision that determines your real accuracy in the field
360° surround view	Independent add-on module Not part of the ISOBUS function set	Budget it as a separate option, not as an included feature
Ordering	MOQ 1 · pricing by inquiry	Trial one unit, prove it on your own fields, then scale

CHAPTER 08

Manual Pass vs Guided Pass

The same tractor, the same implement, the same field. Only the steering source changes.

What changes	Manual steering	HD818 guided
Line accuracy	Depends on the operator, the light and the hour	±2.5 cm, repeatable
Overlap	5–15% on tillage and planting	Reduced — the machine tracks the stored line
Skips	Occur at headlands, turns and fatigue points	Covered by the same guidance line
Night & low visibility	Slows down or stops	Runs to the same line in dust, fog and dark
Operator fatigue	Steering is continuous manual work	Operator monitors the implement and the field instead
Season-to-season	Lines are re-judged each year	Same lines recalled from stored data
Cost of entry	None	One retrofit kit, MOQ 1

HD818 terminal interface showing vehicle, implement, task and field status

The terminal is the whole operator interfaceVehicle, implement, task, field and material status on one screen

CHAPTER 09

Three Ways to Start

You do not have to guess the right configuration before talking to us. Pick the entry point that matches your situation.

PATH A · SINGLE FARM

Trial Kit on One Tractor

Put the kit on the machine that does your most repetitive work and measure the input difference over one season.

Best for: row-crop farmers
MOQ 1, single-unit trial
Installation guidance included

Pricing by inquiry · MOQ 1

PATH B · MOST PICKED

Fleet Retrofit

Tractors of different ages and brands, one guidance standard. Adapter kits are selected per machine during specification.

Best for: contractors, estates, cooperatives
Multi-brand adapter matching
Uniform lines across the whole fleet
Operator training included

Quoted per fleet configuration

PATH C · CHANNEL

OEM / Distribution

Your brand, your packaging, your market. We build the guidance kit and the export documentation behind it.

Best for: importers & distributors
Logo, colour and configuration changes
Regional territory discussion

Project terms on request

CHAPTER 10

Why Buy Guidance From the Manufacturer

Guidance systems are often resold through several hands before they reach a farm — and the specification gets vaguer at every step. Jitian builds the equipment and ships it directly.

Manufacturing agriculture equipment since 20083,000 m² factory, 5,000 units annual capacity, 48 employees — the production line is in the same place as the sales conversation.
Guidance and aerial application from one plantHD818 auto-steering and the JT-80 spray drone share one supply chain, one contact and one set of export documents.
Specifications we can substantiateWe publish the figures our documents support, and we say on request for the rest. Certification records are listed on the About page — including what we do not yet hold.
Export-ready from day one30+ countries shipped, container loading experience, English documentation as standard, 28,000+ overseas business customers served.
Low MOQ, real customizationColour, logo and configuration changes from a single unit. We do not hide customization behind a container order.

Assembly line for HD818 auto-steering hardware inside the Jitian Intelligent production facility

HD818 assembly · 3,000 m² facility · units are tested before they are crated

Buyers Ask

The questions that come up in almost every guidance enquiry, answered without the sales gloss.

Will the HD818 fit my tractor?

It fits the vast majority of tractors, and the kit is brand-agnostic — the variable is the steering interface, which we ship with multiple adapter kits. Send us your make, model and year and we will confirm flange matching before you order. That check is free and it is the one thing worth doing first.

Do I need a base station, or is RTK included?

You need either a base station or a CORS account. It is not included as standard and it is not optional — without a differential source you do not get ±2.5 cm. CORS is normally the cheaper route where a correction service covers your area; a base station is the answer where it does not.

Is 360° surround view part of the auto-steering system?

No. It is an independent add-on module and it is not part of the ISOBUS function set. We separate them deliberately: if you are comparing quotations or writing a tender specification, list it as its own line.

Can it steer implements, not just the tractor?

The HD818 is ISOBUS compatible, so implement control and section control can run through the same terminal. Which functions are actually available depends on the implement itself — ISOBUS is a protocol, not a promise that every implement supports every function. Tell us your implement and we will confirm what it exposes.

How long before the kit pays for itself?

On a single row-crop tractor, most farms recover the cost within the first season, driven mainly by reduced overlap on tillage and planting. That is an average, not a guarantee — your field geometry, current overlap and fuel price decide it. It is exactly why we recommend the MOQ 1 trial path: prove it on your own land before rolling it out.

● TALK TO US

Specify Your Guidance Kit

Tell us the tractor make and model, the operations you most want to fix, and the region you farm in. We will come back with the right configuration, the adapter matching and the correction-source options.

✉

sandy@jtilep.com

Sales & OEM inquiries · reply within 1 business day

✆

+86 183 6124 9936

Mon–Sat · 9:00–18:00 (GMT+8) · 中文 / English

⌘

FULL HD818 SPECS

jtilep.com · HD818 page

Complete hardware specification and configuration options