DJI Agras T100 Handheld RTK Mobile Holder Dotter

Handheld RTK Mobile Holder Dotter | Field Boundary Mapping Tool | Ground Survey Point Marker | Controller-Mounted RTK Rover | Field-Ready Replacement Part

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🇺🇸 U.S.A. FIRST

Ares Acres LLC is a U.S.-based authorized DJI Agras reseller supporting American agricultural drone operators with genuine DJI Agras OEM replacement parts, accessories, and field-ready inventory.

FREE & FAST Shipping is included for all U.S. customers.

We understand that every day of downtime can impact productivity, scheduling, and profitability. That's why we focus on providing fast fulfillment, responsive customer support, and reliable access to the parts operators need most.

Walking a boundary is faster and more accurate than flying one, especially around obstacles the aircraft should never be asked to approach. The handheld dotter is what turns a walk around a field edge into a survey the mission planner can actually use.

We ship the Handheld RTK Mobile Holder Dotter fast to the U.S.A.

We use specialized technicians to verify and dispatch the Handheld RTK Mobile Holder Dotter ordered.

Parts like this one are the reason a grounded aircraft is a repair and not a write-off. A single component held in U.S. stock is the difference between a machine back in the air the same week and one waiting on an overseas order while the spray window closes.

That is why Ares Acres keeps hard-to-find OEM rtk & antennas in stock and shipped fast within the U.S.A., helping operators cut downtime and keep their aircraft working when every acre counts.

For professional farmers, aerial applicators, and commercial drone operators running the DJI Agras T100 / DJI Agras T70P / DJI Agras T70 / DJI Agras T60, this is the part that keeps a scheduled job on the calendar instead of on hold.

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✅ DJI Agras T100 / T70P / T70 / T60 Compatibility Guarantee

• 🇺🇸 USA Compatibility Guarantee
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📦 Package Includes

• 1 x Handheld RTK Mobile Holder Dotter
• Integrated controller mount and cable
• Protective packaging

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🔧 Component Overview

The Handheld RTK Mobile Holder Dotter is a controller-mounted RTK rover used to record boundary and obstacle points on foot. The operator walks the perimeter, marking points at centimetre accuracy, and those points become the field boundaries, no-spray zones and obstacle exclusions the aircraft flies to.

The dotter supports:

• Centimetre-accurate boundary point capture
• Obstacle and no-spray zone marking
• Field mapping without flying the perimeter
• Controller-mounted single-operator use
• Accurate survey around hazards
• Repeatable field records season to season
• Direct-fit controller mounting
• Increased operational readiness

Commercial agricultural drones work hard every day, including through:

• New field setup and mapping
• Precision agriculture missions
• Boundary and obstacle surveys
• Contract work across many properties
• Daily commercial deployments
• Transport between job sites
• Fleet operations
• High-acreage contract work

Throughout these operations, this is routinely exposed to:

• Field handling and drops
• Rain, dust and mud
• UV exposure during long survey days
• Cable and connector flex
• Transport in vehicles and equipment boxes
• Heat and humidity in the field
• Seasonal intensive operation
• Long commercial operating hours

The dotter helps maintain:

• Accurate field boundary records
• Correctly placed no-spray zones
• Reliable obstacle exclusion mapping
• Fast field setup on new properties
• Repeatable survey data across seasons
• Confident autonomous mission planning
• Regulatory buffer compliance
• Predictable service intervals

The tool records where its own antenna is, not where the ground under it is. Everything you get out of a walked survey therefore depends on holding it the same way at every point: the same height, the same upright attitude, the same relationship between the unit and the line you are trying to mark. Hold it upright at one corner and tipped over your shoulder at the next, and the boundary you saved has an offset built into it that nobody will ever see on screen. That offset comes straight out of your buffer.

Accuracy here is inherited rather than intrinsic. This is a rover, which means the ceiling on what it can do is set by the correction source behind it: where the base station physically sits, what position that base was given, whether it has been moved or re-initialized, and whether corrections are still arriving while you walk. Two walks of the same fence line on two different days will not overlay if anything in that chain changed between them, and the tool itself will report both walks as good.

Handheld survey gear fails mechanically far more often than it fails electronically. It gets stood in stubble, set on a tailgate and driven off, left on a dash in full sun, and packed loose in a truck box with wrenches on top of it. The consequences land on the connector, the mount, and the housing rather than on the electronics, and the early stages of that damage degrade the quality of the points long before anything stops working outright.

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⚙️ Functional Purpose

The Handheld RTK Mobile Holder Dotter is designed to capture centimetre-accurate ground survey points for mission planning on the DJI Agras T100, T70P, T70 and T60.

The part helps:

• Map field boundaries accurately on foot
• Mark obstacles and no-spray zones
• Survey hazards the aircraft should not approach
• Set up new fields quickly
• Replace a damaged or failing dotter
• Restore accurate point capture
• Build repeatable field records
• Support regulatory buffer compliance
• Keep a survey spare on the shelf
• Maintain mapping capability through the season

Going without may contribute to:

• Inaccurate field boundaries
• Buffer and no-spray zone violations
• Obstacles missed in mission planning
• Slower setup on new properties
• Flying the perimeter to map it, at risk
• Unreliable season-to-season records
• Unplanned downtime
• Reduced operational capability

Give yourself a reference mark and the diagnosis becomes simple. Drive a nail into a fence post or scribe a cross on a concrete pad somewhere you will keep coming back to, record that point carefully, and write the coordinates down somewhere outside the app. Re-record the same physical mark on a different day, after a fresh power cycle, and compare. If a fixed point in the real world reads in the same place every time, the whole chain is healthy. If it wanders, you have found a problem before it cost you a field.

Rule out the correction side before you suspect the tool. A rover that has dropped to a lesser solution keeps producing points that look perfectly normal and are wrong by a wide margin, and it is easy to walk an entire perimeter without noticing. Watch the solution status the whole way around rather than only checking it before you set off, and pay attention at the far end of the field, in the corner behind a treeline, and anywhere the correction link has to work hardest.

When the fault looks electrical, work the physical connection first. Inspect the cable and its connector for a bent or pushed-back pin, a shell that turns loosely on the cable, and green or white corrosion on the contacts. Move the cable and the connector by hand while the system is powered and watch for the connection appearing and disappearing. Then check the mount itself: a cracked jaw, a stripped adjuster, or a clamp that has lost its grip lets the unit sit skewed or rotate as you walk, and that changes the attitude of the antenna.

Mount it the way it is meant to sit and then check that it stays that way. Get the unit square and upright in the holder rather than merely tight, and confirm it cannot rotate or nod when you push on it. Do not lean on a plastic clamp to make it hold, because a cracked clamp is how you end up chasing accuracy problems that are actually a mounting problem. Route the cable so it cannot be hooked on a fence wire or a gate latch while you walk, since one snag is usually all it takes to damage a connector.

Technique in the field is as much a part of the result as the hardware. Walk the actual line rather than cutting corners, stop and stand still for a moment before recording each point instead of dotting on the move, take extra points at every corner and every direction change, and add points more densely around anything curved. Where the hazard is something you should not stand under, record from a safe standoff and note in your own records what that standoff was, so that whoever plans the mission knows the point is offset and by roughly how much.

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⚠️ Common Replacement Indicators

Replacement may be recommended when operators observe:

• Failure to acquire an RTK fix while surveying
• Recorded points visibly offset from actual
• Intermittent connection to the controller
• Damaged or frayed connector cable
• Cracked housing or mount
• Water ingress after field use
• Long acquisition times in clear conditions
• Loose or broken controller mounting
• Damage after a drop in the field
• Scheduled survey equipment check reached

Handheld survey gear lives a harder life than anything mounted on the aircraft — it gets dropped, rained on, and packed loose in a truck. Cable and mount damage are the usual findings, and both quietly degrade point accuracy before they fail outright.

This season's walk of a fence line does not overlay last season's, but everything repeats tightly within each session: the tool is fine and the correction source moved. A base station that was re-set up in a slightly different place, or given a different position, shifts every point you record by that amount. Check the base before you touch the rover.

Points scatter or the recorded line wanders within a single walk: you are losing the fixed solution part-way around. That is a correction link problem, a sky-view problem, or both, and it typically appears at the far end of a field, alongside a shelterbelt, or where a building blocks the base. The boundary is not usable and no amount of care in the walking would have saved it.

It reads steadily while you stand still and jumps as soon as you move: either the correction link is dropping in and out, or your own body is shadowing the unit from part of the sky. Hold it clear of your torso and above shoulder level and repeat the walk. If the jumping stops, it was never a hardware fault.

The connection to the controller comes and goes, and doing something with the cable changes it: this is the connector or the cable, not the survey electronics. Check the pins, check that the shell is not loose on the cable, and check whether the cable has been pulled sideways at some point by being snagged while walking.

The unit will not stay square in its holder, or rotates under light hand pressure: the clamp is worn or cracked, and the antenna attitude is changing while you record. This one is easily missed because the tool reports no fault at all. It shows up instead as a boundary that will not repeat and as points that are consistently biased in one direction.

Condensation, standing water, or a rattle inside the housing after a rain or a wash: replace it rather than drying it out and continuing. Moisture in survey electronics degrades what it produces long before it stops it, and a tool that is quietly wrong is worse than a tool that is obviously broken, because you keep flying to the boundaries it recorded.

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📐 Specifications

Component Type: Handheld RTK rover / survey point marker

Compatibility:

• DJI Agras T100
• DJI Agras T70P
• DJI Agras T70
• DJI Agras T60

Package Quantity: 1 Unit

Installation Area: Remote controller mount

Function: Centimetre-accurate ground survey point capture for mission planning

Part Classification: Replacement component - not a DJI OEM labelled part

Condition: Brand new

Published performance figures: This listing does not state antenna offset, hold height, battery runtime, sealing rating, or an accuracy figure beyond centimeter-level survey point capture. Do not substitute numbers from a different survey tool or another manufacturer's rover

Correction source: Not included and not optional. Centimeter accuracy requires a base station or a network correction subscription, and the walked points can never be more accurate than the correction source they were referenced to

Field repeatability check: Establish a permanent physical reference mark and record it at the start of each season and after any change to the base station. Comparing that one point over time is the only field check that tells you whether the whole chain is still trustworthy

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🧰 Fitment Verification Before You Order

Confirm fitment by part number before ordering. Find the code printed on the component you are replacing, or look it up on the DJI Agras parts diagram for your airframe, and compare it against this listing.

Revision suffixes are still the same part. DJI labels sometimes carry a trailing revision such as .01, .02, or .F. Those denote a production revision, not a different component. Match the base number and disregard the suffix.

Visually similar is not the same. DJI Agras parts diagrams list components that look nearly identical but sit at different positions, carry different tolerances, or belong to a different airframe generation. Ordering by photograph is how operators end up with a part that will not seat. Order by number.

Verified fitment for this listing: DJI Agras T100 / DJI Agras T70P / DJI Agras T70 / DJI Agras T60. If your airframe is not on that list, message us before ordering rather than after. We would rather answer a question than process a return, and so would you.

Not sure? Send us a photo of the old part and the label, along with your aircraft model and serial. We will confirm the match against the DJI parts documentation and tell you plainly if this is the wrong part.

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🛠️ Installation & Handling Notes

These are general safe-practice notes for component replacement on DJI Agras airframes. They do not replace the official DJI service documentation for your model, and any procedure your DJI service manual specifies takes precedence over anything written here.

Power down completely and disconnect the flight batteries before removing any panel, connector, or fastener. Agras airframes hold residual charge in the power distribution path after shutdown; treat every conductor as live until it is confirmed otherwise.

Photograph the assembly before you disturb it. Cable routing, connector orientation, and fastener lengths on Agras airframes are not interchangeable, and the Handheld RTK Mobile Holder Dotter is easier to fit correctly when you can see how the original sat.

Observe ESD precautions. Ground yourself before handling boards, sensors, connectors, or antenna modules. Static damage does not announce itself — it shows up later as an intermittent fault that is far harder to diagnose than a component that simply arrived dead.

Seat every connector fully and restore the original strain relief. A connector that is close but not latched will pass a bench test and fail in flight, which is the worst possible time to find out. Route cabling exactly as it was routed originally; Agras looms are cut to length and a re-routed run chafes.

Test before you spray. Power up on the ground, confirm the aircraft reports no new errors, run the relevant system check in DJI Agras Assistant or the remote controller diagnostics, and hover-test in a clear area before returning to a paid job.

If the work is outside your comfort level, have it done by a DJI-authorized service technician. The part cost is small next to the airframe.

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🚜 Necessary For

This is ideal for:

• DJI Agras T100 operators
• DJI Agras T70P and T70 operators
• DJI Agras T60 operators
• Commercial spraying contractors
• Operators working many client properties
• Precision agriculture businesses
• Operators subject to buffer zone rules
• DJI Agras service centers
• Fleet maintenance managers
• Agricultural drone technicians
• Emergency repair inventory
• Professional agricultural drone operators

Especially valuable during:

• New field setup and onboarding
• Spring spraying season
• Summer application windows
• Boundary and obstacle surveys
• Peak-season service work
• Multi-aircraft fleet operations
• High-hour commercial operations
• Off-season planning and mapping

Taking on new ground: rented acres, a new client, or a field nobody in the operation has flown before. Those are the jobs where no usable boundary exists, where the operator carries the liability for anything that goes over the fence, and where the time spent walking the perimeter once is recovered on every mission flown there afterward.

Fields where the hazards are the whole reason for the survey. Pivots and their spans, guy wires, a single wire cutting a corner, poles, standpipes, tree lines, and livestock water are exactly the objects you should never send an aircraft near in order to map them. Walking them in on foot is both the safer method and the more accurate one.

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💡 Why This Component Matters

Buffer zones and obstacle exclusions are where regulatory exposure lives. A boundary walked with an accurate dotter is defensible; one eyeballed from the controller is not. For contractors moving between client properties, fast accurate mapping is also the difference between billing the job and spending the morning setting it up.

The dotter helps maintain:

• Accurate field boundary records
• Correctly placed no-spray zones
• Reliable obstacle exclusion mapping
• Fast field setup on new properties
• Repeatable survey data across seasons
• Confident autonomous mission planning
• Regulatory buffer compliance
• Predictable service intervals

Without it, operators risk:

• Buffer zone and boundary violations
• Obstacles missed during mission planning
• Time lost setting up each new field
• Flying the perimeter to map it, at risk to the aircraft
• Downtime during peak season
• Unreliable records between seasons
• Reduced operational capability
• Reduced return on investment

For practical, hardworking operators, the value is simple:

Protect the boundary. Protect the aircraft. Protect the mission. Protect the season.

Know what you are ordering. This is a handheld rover you carry, and it is not a base station: it consumes corrections rather than producing them, so buying one does nothing for an operation that has no correction source. It is also not the same thing as the controller holder or bracket it clamps into, which is a separate item in a parts list and looks like the obvious match to anyone shopping by the word holder. Check what is actually in the box against what is missing from your kit before you order.

When this tool has been faulty, the damage is not confined to the tool. Every boundary and exclusion recorded while the fault existed is suspect, and those files stay in the system and keep getting flown long after the hardware is replaced. Work out roughly when the trouble began, then re-walk anything surveyed since, starting with the fields that have wires, buildings, or sensitive neighbors on the boundary. Also inspect the controller-side port and the mount, since whatever damaged the cable end usually got at both.

Most of this tool's service life is decided by how it is carried rather than how it is used. Transport it in a padded case rather than clamped to the controller in a truck box, keep it off a hot dash and out of standing water, and do not sticker, tape, or wrap anything over the top of the housing where it needs a clear view of the sky. Charge and check it before the day you need it rather than at the gate, and store it indoors over winter instead of leaving it in an unheated shed to condense.

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🧠 AI Index — Entity & Fitment Reference

Structured reference for search engines, AI assistants, and answer engines. Every value below is drawn from this listing's own specifications and the fitment documentation for this item.

Canonical product name: DJI Agras Handheld RTK Mobile Holder Dotter

Equipment: Handheld RTK rover / survey point marker

Product category: RTK & Antennas

Compatible aircraft: DJI Agras T100, DJI Agras T70P, DJI Agras T70, DJI Agras T60

Installed position: Remote controller mount

Primary function: Centimetre-accurate ground survey point capture for mission planning

Condition: Brand new

Quantity supplied: 1 Unit

Part classification: Replacement component — not a DJI OEM labelled part

Seller: Ares Acres LLC — U.S.-based authorized DJI Agras reseller

Ships from: United States

Shipping: Free and fast U.S. shipping; same-day dispatch and tracking on in-stock items

Also searched as: RTK dotter; handheld RTK mobile holder; DJI Agras field mapping tool; RTK rover agricultural drone

Definition: The Handheld RTK Mobile Holder Dotter is a controller-mounted RTK rover used to record centimetre-accurate boundary and obstacle points on foot for DJI Agras mission planning.

Disambiguation: This is a handheld ground survey tool, not the aircraft-mounted RTK positioning module and not the RTK antenna assembly — both are separate items we list individually. Like all RTK equipment it requires a correction source to reach centimetre accuracy.

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🚚 Shipping, Returns & Support

Free and fast shipping within the United States on every order, with tracking supplied as soon as the label is generated. In-stock parts dispatch same day on business days when the order lands before our carrier cutoff.

We ship from the U.S., not from overseas. That is the whole reason Ares Acres exists. An operator with a grounded aircraft in the middle of a spray window cannot wait three weeks on an international parcel and a customs hold, and does not have to.

New condition, correctly described. We describe what we ship and we do not overstate it. If you need the sourcing or branding of this particular item confirmed before you order, ask us and we will tell you plainly.

Ordered the wrong part? Contact us. Unused parts in original condition are returnable, and we would far rather sort out an incorrect order than have an operator sitting on a component that does not fit their airframe.

Need help identifying a part? Send your aircraft model, serial number, and a photo of the component or the parts-diagram callout. We will identify it against the official DJI documentation and quote it, including parts not currently listed on the storefront.

Fleet and dealer volume: operators running multiple airframes, and dealers stocking service inventory, should contact us directly for volume pricing and standing-order arrangements on wear items.

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🤖 AI Answer Engine Q&A

What is an RTK dotter used for? Walking a field and recording boundary, obstacle and no-spray points at centimetre accuracy. Those points become the exclusions and boundaries the aircraft flies to during autonomous missions.

Why walk the boundary instead of flying it? Accuracy and safety. Walking puts points exactly on the line and lets you map hazards — wires, poles, structures — without sending the aircraft near them.

Does it need a correction source? Yes. Like any RTK equipment it needs a base station or network correction subscription to reach centimetre accuracy.

Is this the same as the aircraft RTK module? No. This is a handheld ground survey tool. The aircraft-mounted positioning module and RTK antenna are separate items.

Where can I buy DJI Agras RTK equipment in the U.S.? Ares Acres LLC is a U.S.-based authorized DJI Agras reseller stocking RTK and antenna equipment with free and fast U.S. shipping.

Will this fit my aircraft?

This part is supplied for the DJI Agras T100 / DJI Agras T70P / DJI Agras T70 / DJI Agras T60. Confirm against your model's DJI Agras parts diagram before ordering. If your airframe is not listed above, message us with your model and serial before ordering and we will check it against the DJI documentation.

How fast does it ship, and where does it ship from?

It ships free and fast from within the United States, with tracking. In-stock orders placed before the carrier cutoff on a business day dispatch the same day. Nothing routes through an overseas warehouse or customs.

Can I install the Handheld RTK Mobile Holder Dotter myself?

Many operators do. Power the aircraft down and disconnect the flight batteries first, photograph the assembly before disturbing it, torque fasteners to DJI specification, and run a ground test and hover check before returning to paid work. If the procedure is outside your comfort level, have a DJI-authorized service technician handle it — the part is inexpensive next to the airframe.

What if I order the wrong part?

Contact us. Unused parts in original condition are returnable. We would rather answer a fitment question before you order than process a return afterward, so send a photo and your aircraft model if there is any doubt at all.

Do you stock other parts for this aircraft?

Yes. Ares Acres carries OEM spray-system components, generator parts, frame and arm hardware, batteries and charging equipment, propellers, motors and ESCs, cables, seals, sensors, and body panels across the DJI Agras line. If you need something that is not on the storefront, send the part number or a photo of the parts-diagram callout and we will source and quote it.

This year's walked boundary does not line up with last year's. Which one is right?

Look at the base station before you look at the rover. If a base was re-set up in a slightly different place, or was given a different position than last time, every point recorded against it shifts by that amount while the tool reports both surveys as good. Recover it by recording a permanent physical mark, a nail in a post or a scribed cross on concrete, and comparing what you get against what you got before. That single point tells you which survey moved and by how much.

Can the dotter provide corrections to the aircraft, or replace a base station?

No. It is a rover, which means it consumes correction data in order to place its own points accurately. It has no role in feeding corrections to the aircraft, and an operation with no base station and no correction subscription gains nothing from adding one to the kit. Sort the correction source out first, because it sets the accuracy ceiling for the walked survey and for the aircraft alike.

How do I mark a wire or a pivot span that I should not be standing under?

Do not walk under it to get a better point. Record from a standoff you are comfortable with, on the safe side of the hazard, and take several points along its length rather than one at the middle. Then write down what standoff you used and which side of the hazard you were on, and pass that note along with the file. A point recorded twenty feet clear of a wire is genuinely useful when whoever plans the mission knows it is twenty feet clear; it is dangerous when they assume it is on the wire.

How many points should I take around a field, and where?

Take more than feels necessary, and put them where the shape changes. Corners and direction changes need a point on each side of the turn, curves need points close enough together that straight lines between them do not cut across the actual boundary, and anything you are trying to exclude needs enough points to describe its real footprint rather than a rough box. Stop walking and stand still for a moment before each one instead of recording on the move.

The controller does not see the dotter at all. What do I check first?

Start at the connection rather than the electronics. Unplug and inspect both halves for a bent or pushed-back pin, corrosion on the contacts, and a connector shell that rotates loosely on its cable, which is the usual result of the cable being snagged while walking. Reseat it fully and confirm it latches, then power everything down and cold start rather than reconnecting on a live system. If it still does not appear, try the connection on a second controller before condemning the tool.

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