DJI SDR Transmission Transmitter - High-Speed Wireless Video Transmitter for Drones - Perfect for Aerial Photography & Live Streaming

DJI SDR Transmission Transmitter (TX)

SDR Transmission, Strong and Stable
Built around Software-Defined Radio technology, DJI SDR Transmission utilizes both SDR and Wi-Fi video transmission modes. SDR technology takes video transmission performance to a whole new level, offering enhanced stability, interference resistance, and penetration capabilities. For instances that require temporary monitoring, DJI SDR Transmission also accommodates Wi-Fi transmission to provide teams with increased flexibility.

SDR vs. Wi-Fi Transmission Performance [1]
Transmission Distance: Increased by 650%
Transmission Bitrate: Increased by 67%
Transmission Latency: Improved by 30%

Kilometer-Level Transmission, Robust Penetration 
DJI SDR Transmission can reach up to 3 km/10,000 ft, [1] accommodating wide-area, dynamic filming scenarios. Coupled with superior penetration capabilities, it meets on-site live feed monitoring demands in various complex scenarios.

20Mbps High Bitrate, 1080p FHD Image Quality
DJI SDR Transmission supports 1080p/60fps live feeds, with a high bitrate of up to 20 Mbps, [2] ensuring smooth monitoring and collaboration.

Seamless Auto Frequency Hopping
DJI SDR Transmission supports seamless auto frequency hopping across 2.4 GHz, 5.8 GHz, and DFS frequency bands. In case of interference, it can automatically switch to the optimal channel, effortlessly tackling complex environmental challenges.

Unlimited Number of Receivers
In Broadcast mode, each transmitter can connect to an unlimited number of receivers, providing a high-quality monitoring experience for multiple collaborators and meeting the independent monitoring needs of various professional roles.

35-Millisecond, Low-Latency Transmission
The minimal latency of just 35 ms [3] ensures smooth monitoring and efficient collaboration.

Metadata Transmission for Professional Use Cases
DJI SDR Transmission supports metadata transmission from mainstream cinema cameras like ARRI and RED via SDI. This provides directors, cinematographers, and DIT teams with quick access to detailed shooting information in real time.

Communicate With Voice Call
DJI SDR Transmission enables one-on-one real-time communication [4] between the receiver and transmitter, allowing for seamless conversations between the cinematographer and the director or client at any time.

Compact, Lightweight, Portable
With a lightweight design and foldable antennas for easy storage, a single transmitter or receiver weighs approximately 145 g. [5] This not only ensures portability but also supports various mounting methods, satisfying a wide range of on-scene demands.

Innovative USB-C Port, Diverse Monitoring Methods
DJI SDR Transmission supports multiple monitoring methods and can output three SDR signals and two Wi-Fi signals simultaneously. The receiver can output to monitors via SDI/HDMI. Additionally, the transmitter allows for direct connection to smartphones or tablets over Wi-Fi, offering a cost-effective, dual-channel monitoring experience without the need for a receiver.

On top of this, DJI SDR Transmission also introduces a USB-C output monitoring method that combines stability with convenience. Users can use a USB-C cable to connect the receiver to a smartphone or tablet for smooth and stable monitoring.

Newly Upgraded DJI Ronin App

Camera Index Switching
When DJI SDR Transmission is connected to the DJI Ronin app in Broadcast mode, users can seamlessly switch between camera indexes within the app, meeting the monitoring needs for different camera views.

Local Recording and Playback
The app supports local recording, and recorded content can be reviewed on the playback page.

Multiple Monitoring Options
The app supports mainstream monitoring assistance tools such as LUT, peaking, waveform, and false color, delivering a professional monitoring experience.

• LUT
• Peaking
• Waveform
• False Color

Connectivity and Power Supply

DJI SDR Transmission Transmitter Ports
USB-C Port: USB-C Power and Gimbal Communication Port
USB-C Port: USB-C Firmware Update Port
3.5mm Stereo Jack: Supports one-on-one voice calls. [4]
HDMI Input Port: Supports 1080p/60fps video input.
SDI Input Port: Supports 1080p/60fps video input.

Versatile Power Supply Options Tailored to Your Needs

Gimbal Power
Thanks to the integrated power supply design, when used with DJI RS 4 Pro, DJI RS 4, or DJI RS 3 Pro, [7] the transmitter can be mounted on the gimbal and powered directly by it, eliminating the need for a separate battery.
Alternative Power Supply Options 

NP-F Power Supply
The transmitter and receiver both support industry-standard NP-F batteries, which provide a voltage ranging from 6.8 to 8.4 V.

USB-C Power Supply
DJI SDR Transmission has increased compatibility. It can be powered through a standard PD protocol charger, with a USB-C power input rated at 9 V and 2 A

Features:

• SDR Transmission, Stable & Anti-Interference
• Strong Penetration, Extended Transmission Distance
• High Bitrate, High Image Quality
• Innovative USB-C Monitoring Experience
• Broadcast Mode, Unlimited Number of Receivers
• Ronin Compatibility & Remote Control

FAQ:

General

Does DJI SDR Transmission support channel quality monitoring?    
Yes. The receiver can display signal quality through indicator lights: green for strong signal strength, yellow for medium, and red for poor. In the Ronin app, the camera view can display a signal quality bar graph, with taller bars indicating better signal quality.

What should I pay attention to when using DJI SDR Transmission in high-temperature environments?
Ensure the environment is well-ventilated, avoid blocking any air vents, and avoid exposure to direct sunlight.

Does DJI SDR Transmission support connecting with DJI Focus Pro for use?
No.

Does DJI SDR Transmission support monitoring using a smartphone or tablet?
Yes

1. A smartphone or tablet can connect to the receiver through the corresponding RX to Phone Connection Cable, which transmits the signal via SDR mode for enhanced stability and reliability.
2. A smartphone or tablet can also connect directly to the transmitter via Wi-Fi without the need for an additional receiver. This is suitable for temporary monitoring and small-scale usage scenarios.
   If the transmitter's battery is replaced during a direct Wi-Fi connection, the app must be manually reconnected.
3. For details on smartphones and tablets compatible with the Ronin app, please refer to the Ronin app compatibility list.

Does DJI SDR Transmission support third-party antennas?    
No. Moreover, the antennas on DJI SDR Transmission are non-removable.

Can DJI SDR Transmission be used simultaneously with other wireless devices, such as wireless microphones?    
When the transmitter auto-hops to a 2.4GHz channel or a 2.4GHz channel is selected manually, there may be interference with other wireless devices, including wireless microphones. In this case, manually selecting a non-2.4GHz channel is recommended. When selecting a channel, you can check the center frequency of the channel on the transmitter's main interface to confirm whether it is on the 2.4GHz frequency band.

What are the battery specifications supported by DJI SDR Transmission?    
NP-F series batteries. Please note that due to differences in battery capacity and life span, the actual operating time may vary.

Which Ronin ecosystem products are compatible with DJI SDR Transmission?    
When connected with devices such as RS 4 Pro, RS 4, and RS 3 Pro, DJI SDR Transmission can be powered through the gimbal and enables Force Mobile, virtual joystick, gimbal recentering, and more functions. Please note that when the DJI SDR Transmission Transmitter is connected to a stabilizer, the multi-camera control cable from the stabilizer's combo must be used, and ActiveTrack will not be available. Additionally, when the DJI SDR Transmission Transmitter is connected to a stabilizer via the adapter plate, a native vertical shooting setup is not supported.

What camera functions can DJI SDR Transmission control?    
You can adjust parameters such as aperture, shutter, and ISO through a shutter release cable (subject to the camera system, with adjustment response times ranging from approximately 0.5 to 1 second), as well as trigger recording. Additionally, you can access a camera's Mirror Control mode through an HDMI cable.
* The above features are only supported by some camera models. For details, please refer to the camera compatibility list (hyperlink)."

What is the maximum number of cameras that DJI SDR Transmission can support simultaneously?
Up to three cameras are recommended, but the specific number can be adjusted according to the on-site wireless environment.

What is the purpose of the DFS channels on DJI SDR Transmission, and how do I set them up?
DFS channels are utilized for their reduced interference and more stable signal connection. However, they can only be used after ensuring that there is no radar frequency band occupation in the environment. To use the DFS frequency band, make sure that at least one receiver is connected in Control mode. Then, go to the channel selection list in the transmitter or receiver menu and select one of the DFS channels. When all the receivers are in Broadcast mode, the DFS frequency band cannot be used. The number of DFS channels may vary by country or region. Please refer to the local laws and regulations.

Does DJI SDR Transmission support linking with DJI Transmission for use?
No. Furthermore, if DJI SDR Transmission and DJI Transmission are used at the same site, it is crucial to ensure that their central frequencies do not overlap.

How do I use the Voice Call feature of DJI SDR Transmission?
Select Control mode on the receiver and insert a 3.5mm headset with a microphone into both the transmitter and receiver. The volume for voice calls can be adjusted within the menu. This feature supports only one-on-one communication. Headset compatibility may vary, so some models could experience issues. For details, please refer to the headset compatibility list (hyperlink).

Video Transmission Connection

How many receivers can be connected?    
Under SDR mode, Control mode supports transmission to two devices, while Broadcast mode allows for an unlimited number of receivers.
Under Wi-Fi mode, it supports dual-channel connection, and the devices will temporarily disconnect when switching channels.

What connection methods does DJI SDR Transmission support? What usage scenarios are they suitable for?    

1. Under SDR mode, Control mode allows for stabilizer remote control, seamless auto frequency hopping, and stronger anti-interference capabilities. When the number of connected receivers does not exceed two, it is recommended to use Control mode and turn off Broadcast mode.
2. Under SDR mode, Broadcast mode supports an unlimited number of receivers but compromises transmission range and bitrate when compared with Control Mode. It is suitable for scenarios like TVC shootings, where a short-distance connection to multiple receivers for monitoring is needed.
3. Wi-Fi mode allows for direct connection via Wi-Fi without needing a receiver (after downloading the Ronin app). It is suitable for temporary monitoring with up to two terminals connected simultaneously.

How do I obtain the channel frequency information for DJI SDR Transmission?    
You can download the channel and frequency table from the Downloads page on the official DJI website (hyperlink), or check the current channel frequency information on the transmitter's main interface. This information allows users to assign wireless channels efficiently on site.

How do I set the channel on DJI SDR Transmission?    

1. Swipe up on the transmitter's main interface to select the channel.
2. Swipe up on the receiver's main interface in Control mode to select the channel.
3. Connect the receiver in Control mode to the Ronin app and select the channel within the app.
    * When Broadcast mode is enabled on the transmitter, users cannot set the SDR channel to Auto; some channels may not be usable if Outdoor mode is selected after powering on; and DFS channels cannot be selected if not connected in Control mode.

Transmitter

How can I mute the transmitter's fan during recording?    
Connect the transmitter to the camera with an HDMI cable or a shutter release cable, and set the fan mode to Rec Low in the transmitter's menu. Please note that the feature is only supported by some camera models. For details, please refer to the camera compatibility list (hyperlink). Additionally, if the operating temperature is high, the fan may still increase its speed despite the Rec Low setting, to ensure normal operation of the transmission system.

Can the transmitter's SDI and HDMI ports input simultaneously?    
No, only one input is supported at a time. If both ports are connected to video signals, the first signal connected will take precedence.

Is there a required distance between multiple transmitters or receivers?    
It is recommended that you keep a certain distance between video transmission devices (more than 1 meter between transmitters and more than 0.3 meters between receivers) to avoid potential wireless interference.

Do the SDI and HDMI ports support audio output?    
Yes.

Why does the transmitter still display that there is no signal input even after connecting to an HDMI (or SDI) source?    
You can try the following troubleshooting steps:
 1. Unplug and replug the HDMI (or SDI) cable.
 2. Check that the cable and port are clean and undamaged.
 3. Check that the signal source is outputting at 1080p resolution or lower. If the issue remains unresolved, please contact the DJI technical support team.

In The Box:

DJI SDR Transmission Transmitter (TX)
TX Gimbal Mounting Adapter Plate

Notes:

1. The transmission performance values of SDR and Wi-Fi modes were measured in a controlled test environment. SDR mode's 3 km/10,000 ft transmission distance was measured in Control mode (with Broadcast mode turned off) with FCC compliance in an unobstructed, interference-free environment.
   2. Measured in Control mode, with Broadcast mode turned off.
   3. Measured when shooting 1080p/60fps video with Broadcast mode turned off without considering camera and screen display latency. If camera and screen display latency are included, the data is 80 ms.
   4. This feature is only available when the receiver is connected in Control mode.
   5. Weight of a single transmitter or receiver (including antennas). The actual weight may vary. Please refer to the actual product weight.
   6. Compatible with DJI RS 4 Pro, DJI RS 4, and DJI RS 3 Pro.
   7. Sold separately.

All DJI brand products are non-returnable after any packaging has been opened.

If a DJI product has an initial manufacturer defect, the item may be exchanged within 7 days of original purchase. However, if there is any noticeable damage to the product, we cannot accept the exchange or return. If 7 days has passed since purchase, the defect should be addressed through the manufacturer's warranty: 

We apologize, but there are no exceptions to these conditions for DJI products.