Introduction
DJI has introduced the SDR Transmission system, a new video transmission solution designed to bring advanced software-defined radio (SDR) technology to a broader audience. This Wi-Fi-based wireless video system offers great operating range and low latency, making it suitable for small- and medium-sized film crews.
Key Features
- Complete Receiver/Transmitter System
- SDR Tri-Bandwidth Technology
- DFS, 2.4 & 5.8 GHz with Auto Hopping
- Up to 1080p60 Resolution
- Range of up to 1.9 Miles
- Broadcast & Control Modes
- Ronin Compatible
- HDMI, SDI & USB-C Connections
- High Bit Rate up to 20 Mb/s
- 35ms Low Latency
SDR Technology and Performance
The DJI SDR Transmission system promises stable video transmissions even in complex environments, thanks to its SDR technology. It delivers 1080p/60fps live feeds with bitrates up to 20Mbps and a latency as low as 35 milliseconds. The system can transmit videos up to 3 kilometers (1.8 miles) away, ensuring a robust and reliable connection.
Enhanced Stability and Interference Resistance
Designed for enhanced stability, the SDR Transmission system automatically hops across 2.4 GHz, 5.8 GHz, and DFS frequency bands to find the most optimal channel, offering strong interference resistance and robust penetration capabilities.
Monitoring Methods
The DJI SDR Transmission supports diverse monitoring methods, making it versatile for various filming scenarios:
- Monitor Output: Outputs to monitors via SDI/HDMI.
- Smart Device Connection: Connects directly to smartphones or tablets via Wi-Fi for monitoring.
- USB-C Connection: Connects the receiver to a smartphone or tablet with a USB-C cable.
In broadcast mode, the system can connect to unlimited receivers, providing a high-quality monitoring experience for multiple collaborators.
Operational Modes
SDR Mode
- Control Mode: Suitable when the number of connected receivers does not exceed two, offering stabilizer remote control, seamless auto frequency hopping, and stronger anti-interference capabilities.
- Broadcast Mode: Supports an unlimited number of receivers but compromises transmission range and bitrate, ideal for short-distance connections in scenarios like TVC shootings.
Wi-Fi Mode
- Allows direct connection via Wi-Fi without needing a receiver, suitable for temporary monitoring with up to two terminals connected simultaneously.
Remote Camera Controls
When used with DJI RS Series Stabilizers, the SDR Transmission supports various remote camera control features, including Force Mobile, virtual joystick, and gimbal recentering functions. It can display and adjust camera settings like aperture, shutter, and ISO, and trigger photo-taking and video recording through the app.
Inputs & Outputs
Video Inputs & Outputs
- Transmitter: 1x HDMI, 1x BNC (SDI), 1x USB-C.
- Receiver: 1x HDMI, 1x BNC (SDI), 1x USB-C.
Audio Outputs
- Transmitter/Receiver: 1x 1/8″ / 3.5 mm Output.
Integration with DJI RS Series Stabilizers
The DJI SDR Transmission system can be seamlessly integrated with DJI RS Series Stabilizers (RS 4 Pro, RS 4, and RS 3 Pro). When connected, it supports features such as Force Mobile, virtual joystick, and gimbal recentering. The transmitter can be powered directly by the gimbal, eliminating the need for a separate battery, thanks to the integrated power supply design. However, some functionalities like ActiveTrack and native vertical shooting setup are not available when using the adapter plate.
Size & Portability
Weighing only 145 grams (5.1 ounces) for a single transmitter or receiver, the DJI SDR Transmission system is lightweight and portable, making it easy to carry and store. The foldable antenna design further enhances its portability, allowing it to travel conveniently with a crew on the go.
Price & Availability
The DJI SDR Transmission and its accessories are available for purchase from DJI’s online store, DJI Stores, DJI Authorized Retailers, and other stores starting today, store.dji.com The pricing is as follows:
- DJI SDR Transmission Combo: $549 USD
- DJI SDR Transmission Transmitter: $309 USD
- DJI SDR Transmission Receiver: $309 USD
- DJI SDR Transmission Phone Holder Kit: $49 USD
- DJI SDR Transmission Tablet Holder Kit: $49 USD
- RX to Phone Connection Cable (USB-C to USB-C, 22cm): $10 USD
Conclusion
The DJI SDR Transmission system stands out as a feature-rich and affordable solution for wireless video transmission. With its impressive range, low latency, and diverse monitoring options, it is poised to put significant pressure on other companies offering compressed wireless video systems with shorter operating ranges. This system is an excellent choice for small- to medium-sized film crews, providing reliable and high-quality video monitoring capabilities.
