DJI Transmission System (Everything You Need to Know) – Droneblog


A vital function behind a DJI drone that is typically neglected is the drone transmission system.

DJI Transmission System (Everything You Need to Know)

I have actually personally flown numerous DJI drones from various generations, and I can state– excellent paradises, what a distinction!

DJI drones typically have the OcuSync transmission system, which is exclusive and distinct to DJI. The transmission module is set up on all DJI drones and can not be updated or altered, however it can be found in various variations. And the flight variety, penetration, controller compatibility, and a couple of more aspects depend on it.

Here, I’ll show you whatever you require to understand about the DJI transmission system, why it matters, the distinction in between them, and how we can determine one.

Behind DJI OcuSync: Factors & & Analysis

A transmission system in a drone is among the most vital parts without which a drone can not fly at all. It just can not make a connection in between a drone remote controller and the drone itself.

In customer DJI drones, we have the OcuSync transmission system, which has 2 functions:

  • It catches live video and sends it back to the pilot. The pilot gets a live feed, which can be seen on the phone screen linked to the remote controller or the DJI RC with a screen included. The OSD is likewise sent by the very same module with all the info you require to see throughout a flight (battery left, signal strength, instructions, and so on)
  • The OcuSync on the drone likewise gets radio input. The pilot info is sent out from the remote controller and gotten by the very same drone module.

In FPV, we have 2 various modules: the video module (VTX) and a different radio RX module that gets input on a various procedure. Not with DJI.

Therefore, without a transmission system, you can not manage the drone or see a live feed.

” MORE: Long Range Drones: Ultimate Guide

What is the distinction in between numerous DJI transmission systems?

As drone innovation progresses at an unbelievable rate, so does the DJI OcuSync.

There are many distinctions in between the various variations, so let me assist you comprehend what can be impacted when you’re about to pick a drone based upon this function.

  • Flight Range: The flight variety is the very first to be impacted. More recent OcuSync variations constantly include a considerable enhancement in flight variety and signal strength in between the drone and the radio. DJI has actually constantly done an outstanding task in producing long-range drones, mostly since of their transmission systems.
  • Flight Penetration: Flight penetration is yet another important element that we’ll typically observe to enhance with more recent OcuSync systems. From flying a drone behind challenges and trees to locations with considerable disturbance, the signal penetration of a drone is straight affected by the OcuSync transmission variation.
  • Live feed resolution and framerate: What we see on our phone or RC screen, the information we observe, include a particular resolution and framerate. That’s yet another element affected by the OcuSync variation. With the more recent variations, the drone can transfer more information in real-time, thus making the most of much better resolution and framerate.
  • Latency: In drone terms, latency is the action time in between the drone remote controller and the drone itself when we connect to radio transmission or in between the drone video system and the image showed associated to the video transmission. Older OcuSync variations and less expensive radios will have slower action times.
  • Compatibility: All these DJI drones with an OcuSync transmission system need to be compatible with a radio that supports the very same procedure. That’s why never ever purchase an RC unless you’re positive it’s suitable with your DJI drone.

” MORE: When Should You Upgrade Your Drone? (Read This First)

OcuSync variations

Let’s not leap ahead and begin with the ancient innovation discovered in the early variation of drones that are not utilized any longer today.

You might not have an interest in that.

What you require to understand is that presently, there are DJI drones in production since today that utilize OcuSync variations 2.0, 3.0, 3+, and the most recent, 4.0. We’ve flown drones with almost all of them and have actually evaluated them completely at Droneblog, so this is the voice of experience.

What’s the distinction in between these variations? How do they deal with all these functions?

I keep in mind when I had my very first Mavic Air, it had a hard time to surpass 500 meters (0.3 miles) in the range before separating the signal severely.

It was certainly that bad. As far as I understand, it utilized some type of dual-band Wi-Fi transmission innovation.

But it was an incredible very first drone. When I remember it, I get goosebumps. Let me show you one image I had the ability to record at an optimum range before I entirely lost connection in line of sight (so I keep in mind)

DJI Mavic Air Max range.jpg

Then, I updated to a Mavic 2– my very first “long-range” drone. What a distinction in between these 2 drones– what a DIFFERENCE!

Imagine this being just a couple of years back. Now, if we consider it, the transmission system in these drones was of the 2nd and very first generation, and as compared to today’s O4, we actually compare futuristic with ancient innovation.

” MORE: Smart Features in Drones (Explained for Beginners)

OcuSync 2.0

DJI Mavic 2

From the very first time it was launched, the DJI OcuSync 2.0 with Mavic 2 in 2018, DJI drones began to be efficient in flying long-range.

Five years later on, the OcuSync 2.0 is still in production with the brand-new DJI Mini 2 SE and Mini 3 and can be discovered on numerous drones, consisting of the DJI Mini 2, Mavic Air 2, Mavic 2 Pro & & Zoom, Phantom 4 Pro V2 and DJI Matrice 300 RTK.

It was the very first considerable enhancement to be able to see, on some drones, a live feed resolution of 1080p, taking pleasure in the skies and observing nature on a big tablet with … once again, goosebumps …

With the OcuSync 2.0, we were likewise able to fly our drones on dual-band 2.4 and 5.8 ghz, and, depending upon the drone, we might fly approximately 3.7 miles in Europe and 6.2 miles in the USA.

The periodic changing in between these 2 bands was a crucial function to observe with OcuSync 2.0 and altered the viewpoint on how a DJI drone flies in various environments.

OcuSync 3.0

DJI Mini 3 Pro Settings to Change (Expert Tips)

As drone innovation has actually progressed, we are now seeing one of the most utilized transmission system in all DJI drones: the DJI O3, or OcuSync 3.0

Surely, you’ve become aware of the DJI Mini 3 Pro or perhaps about theDJI Air 2S Exceptional drones, efficient in flying long-range without problems. Due to the fact that of the better and brand-new OcuSync 3.0 system over the older 2.0,

That’s just.

While the 2.0 variation was really affordable, and we can typically see it in budget plan entry-level drones, with the higher O3 power, there comes a greater cost for these drones.

In regards to efficiency, the OcuSync 3.0 considerably enhanced over the 2.0.DJI Mini 3 Pro and Intelligent Battery Plus Depending on the drone, we can see drones such as DJI Mini 3 Pro efficient in flying approximately 5 miles in Europe or 7.5 miles in the USA (in geo-restricted environments) or see an increase of flight range approximately 15.5 miles or 25km with


What a distinction!

The OcuSync 3.0 likewise showed really efficient in flying further in heavy-interference locations, such as city or downtown WiFi-choked environments.

Moreover, we are now seeing the DJI RC-N1 and DJI RC (with screen), the 2 most utilized DJI controllers ever to boast complete compatibility with all OcuSync 3.0 drones.

But in regards to compatibility, the DJI RC-N1 can likewise deal with a couple of older O2 DJI drones, whereas both RC-N1 and DJI RC work with a couple of OcuSync 3+ drones (from the Mavic 3 series). ” MORE: DJI Mini 3 Pro: One-Year Review (Video)


OcuSync 3+

Moving on, the OcuSync 3+ is a small enhancement of the initial O3 System that is discovered on many DJI drones nowadays.

Currently, we can see the OcuSync 3+ transmission system just on the most sophisticated customer drones launched by DJI, the Mavic 3 series.

And that’s it.

Paying countless dollars for such drones, we needed to see some benefit in regards to variety and penetration, so we took this addition.these Mavic 3 drones Moreover,

work with the professional-level radio controller, the DJI RC Pro, which maximizes this brand-new transmission system.

The very same DJI RC Pro is likewise cross-compatible with the DJI Air 2S, which features the basic O3 variation.

Moreover, the O3+ Mavic 3 drones are well-compatible with DJI RC and RC-N1 controllers that boast the O3 fundamental variation.

See DJI? Cross-compatibility is possible! Why do not we see it more frequently with more recent drones?

Now, moving into the technical information of the DJI O3+, with the Mavic 3 series, we can reasonably see a transmission variety of 5 miles in Europe or 9.3 miles in the USA.

If we’re discussing unlimited environments, the Mavic 3 drones can fly approximately 18.6 miles or 30 kilometers.

What an enhancement!

But the terrific benefit of the O3+ is that being hosted in a professional-level, industrial drone, we required a more robust transmission to permeate disturbance, to be able to take real-estate photos, check a structure, or do some mapping without needing to handle spotty connections.

The O3+ transmission system, the like O3 and O2, runs on dual-band 2.4 and 5.8 GHz however at much higher power.

We can likewise see the live view image on 1080p at 60fps with the more pricey DJI RC Pro. ” MORE: DJI Mavic 3 Pro Review (I have NEVER flown a drone that I enjoyed so much)

DJI Air 3 flying closeup.jpg

OcuSync 4.0

With 2023, we have a brand-new age of high-end drone innovation that exceeds anything ever made, at a portion of the cost.

If you’re almost to enter the drone pastime, I highly suggest, with no doubt, going either with the DJI Air 3 or DJI Mini 4 Pro.

Both these drones include the most recent transmission innovation, the OcuSync 4.0 (and far more).

After a number of years of taking pleasure in drones at the top of the line in regards to transmission power with the OcuSync 3.0, now those drones appear like toys in contrast with O4.

No joke here.

The OcuSync 4.0 is presently the most effective transmission module discovered in generally any customer drone.

We’re still restricted in Europe with a practical variety of 6.2 miles or 10km, however in the United States … well … I’m questioning how, however both the Air 3 and DJI Mini 4 Pro are limited to 12.4 miles or 20km in transmission variety. If we’re following the drone laws,

That is method beyond the visual line of sight.

But in truth, without any limitations, the O4 transmission system can flying a skilled drone for approximately 20 miles or 32 km.

See where we got? How can I compare such drones with the 0.3-mile transmission on my old Mavic Air? It’s excellent that I’ve offered it.

And that’s how drone innovation has actually progressed in the previous couple of years. What should we anticipate in the next 5 or ten years?

On the technical side, the DJI O4 utilizes the very same 2.4 and 5.8 GHz dual-band transmission, has a low latency of approximately 120ms, and this brand-new OcuSync system works ONLY with 2 brand-new remote controllers:

The DJI RC-N2 and DJI RC 2.

We’re delighted to see it in this manner just to acquire the very best transmission system.

Other DJI transmission systems

These previously mentioned transmission systems are the most utilized and discovered in many DJI drones. Hey, they’re not all. We do have 2 more we want to discuss, and they are as follows:

” DJI Transmission” — yet so-called like this, it is a cordless transmission system developed by DJI, and it integrates an uncommon DJI O3 Pro transmission procedure. It’s a standalone module that is utilized in expert movie production on non-drone circumstances or big cine-lifters.DJI Avata DJI Digital FPV System

— We all understand DJI entered into FPV with the DJI FPV and drones. Wait. The DJI Digital FPV System precedes these drones, and it was the initial step towards digital transmission, a brand-new advanced method to see top quality live feed upon your FPV safety glasses, an enormous upgrade from non-DJI analog modules.DJI Avata vs. DJI FPV (Here’s My Choice)


How Long to Charge DJI Mini 3 / Mini 3 Pro Controller (Explained)

Transmission system in DJI Remote Controllers

  • Without going back to the ancient drone innovation (why do I still discuss the word “ancient”?), we have a variety of DJI remote controllers that work just with some drones.DJI Fly App These remote controllers fall under 2 classifications:
  • Without a screen, where you will require a suitable smart phone with the

(or comparable app) to link it in order to see the live view from the drone

With a screen included, where there’s no requirement for a phone to fly the drone. So, let’s see what transmission system these remote controller usage and their present compatibilities.Best Drone Controllers


DJI Smart Controller.jpg

DJI Smart Controller

It’s an early variation of a DJI Remote Controller with a screen and precedes the popular DJI RC.

The DJI Smart Controller deals with the OcuSync 2.0 transmission system and is not likely to be suitable with any brand-new drones.

This controller was (and still is) dealing with dual-band channels 2.4 and 5.8 ghz and can enhance with the O2 a transmission variety of approximately 3.7 miles in Europe or 6.2 miles in the USA. The DJI Smart Controller is not in production any longer.Is the DJI Smart Controller Worth It? (Read This Before Purchasing)




The most basic yet with the greatest compatibility throughout most of DJI drones, we have the DJI RC-N1.

To utilize this remote controller, you will require a suitable smart phone with DJI Fly App or other DJI-compatible apps to manage and see live feeds from the drone.

The DJI RC-N1 is still in production nowadays and works with numerous drones on OcuSync 2.0, 3.0, and 3+ variations. Basically, almost all present DJI drones.DJI RC-N1 Controller – What Drones Are Compatible with It? (Explained)


DJI Mini 3 Pro with DJI RC Explained for Beginners 1.jpg


The DJI RC is among the popular remote controllers with a screen that shares a broad compatibility with DJI drones.

Although not as broad as the N1 variation, the DJI RC works with all drones with the OcuSync 3.0 and 3+, and at the very same time, we have backwards compatibility with the DJI Mini 3, which hosts the OcuSync 2.0 variation.

We would enjoy to see this controller suitable with other O2 systems, such as DJI Mini 2 SE, however this will be not likely.

The benefit of having the DJI RC over the DJI RC-N1 is that you have a premium 5.5-inch screen that operates at complete HD resolution with 60 frames per second.

With this, you will no longer require to link a smart phone and established the controller before flying a drone. You just power on the DJI RC and the drone and fly it quickly.

Mavic 3 Pro with DJI RC Pro.jpg

The DJI RC deals with dual-band 2.4 and 5.8 GHz, and it embraces the OcuSync HD video transmission innovation, which enables broad compatibility with drones hosting various transmission systems.


The DJI RC Pro is the professional-level variation of DJI RC and works, as we pointed out above, with the DJI Mavic 3 line and DJI Air 2S.

It’s an expert controller produced specialists. Some of us at Droneblog have it, and the feedback shared is a considerable upgrade from the DJI RC in regards to efficiency, screen, transmission power and penetration, and even the capability to set up 3rd celebration apps.DJI RC Pro Review (Everything You Need to Know)


How to Connect/Pair DJI Air 3 (All You Need to Know w/ Pictures)

DJI RC-N2 & & DJI RC 2

In 2023, with the launch of OcuSync 4.0, we have 2 brand-new remote controllers: The DJI RC-N2 and DJI RC 2, which are upgrades to the N1 variation and, respectively, the DJI RC.

In regards to style, it looks comparable to its predecessors. In terms of efficiency and transmission power, it’s a significant enhancement. And we required that. But presently, the DJI RC-N2 and DJI RC 2 work ONLY with the DJI Air 3 and DJI Mini 4 Pro. There is no present backwards compatibility with other OcuSync drones.DJI RC 2 Review (Everything You Need to Know)


DJI FPV Remote Controller 2

DJI FPV Remote Controller 2

This remote controller works just with the DJI FPV Digital Transmission system discovered in DJI FPV and DJI Avata drones.received on the goggles The benefit of this remote controller is that it was made to imitate an FPV controller, with the possibility to eliminate the spring stress from the throttle equipment.

This remote controller does not support linking a smart phone like the DJI RC-N1 or N2 for live view images, and the only function it has is to transfer information to the drone and not get any image, which is

. The DJI FPV Remote Controller 2 is NOT suitable with any other DJI drones and most likely never ever will be, as the drone lineup is completely various from basic GPS drones.DJI Avata Controller Options

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